agents / index.html
Lilambd's picture
Agent landing page with finished answers
9b20aa7 verified
Raw History Blame Contribute Delete
43.8 kB
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Lilambd Data for Agents</title>
<meta name="description" content="Sourced world-data JSON APIs for AI agents. One MCP endpoint, free tool list and samples, pay per call with x402 in USDC on Base. No account, no API key.">
<meta name="color-scheme" content="light dark">
<link rel="canonical" href="https://api.lilambd.com/">
<link rel="alternate" type="text/plain" title="llms.txt" href="https://api.lilambd.com/llms.txt">
<link rel="alternate" type="application/json" title="OpenAPI" href="https://api.lilambd.com/openapi.json">
<meta property="og:type" content="website">
<meta property="og:site_name" content="Lilambd">
<meta property="og:title" content="Lilambd Data for Agents">
<meta property="og:description" content="23 sourced world-data APIs for AI agents over MCP. Free tool list and samples; pay per call with x402 (USDC on Base). Every answer carries its source and licence.">
<meta property="og:url" content="https://api.lilambd.com/">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="Lilambd Data for Agents">
<meta name="twitter:description" content="Sourced world-data APIs for AI agents over MCP, paid per call with x402.">
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "Organization",
"@id": "https://api.lilambd.com/#org",
"name": "Lilambd",
"alternateName": "Lilambd Crossing",
"url": "https://api.lilambd.com",
"email": "hello@lilambd.com",
"sameAs": [
"https://huggingface.co/Lilambd",
"https://www.kaggle.com/lilambd",
"https://lilambdcrossing.itch.io"
]
},
{
"@type": "WebAPI",
"@id": "https://api.lilambd.com/#api",
"name": "Lilambd Data for Agents",
"description": "Sourced world-data JSON APIs for AI agents, paid per call with x402 (USDC on Base). No signup. MCP server at https://api.lilambd.com/mcp.",
"provider": {
"@id": "https://api.lilambd.com/#org"
},
"url": "https://api.lilambd.com",
"documentation": "https://api.lilambd.com/openapi.json",
"termsOfService": "https://api.lilambd.com/meta",
"potentialAction": {
"@type": "ConsumeAction",
"target": "https://api.lilambd.com/mcp"
},
"offers": {
"@type": "AggregateOffer",
"priceCurrency": "USD",
"lowPrice": "0.005",
"highPrice": "0.5",
"description": "Per call, paid in USDC on Base via x402. sample=1 previews are free."
}
},
{
"@type": "DataCatalog",
"@id": "https://api.lilambd.com/#catalog",
"name": "Lilambd Data for Agents catalog",
"publisher": {
"@id": "https://api.lilambd.com/#org"
},
"dataset": [
{
"@type": "Dataset",
"name": "AI Agent Economy Census",
"identifier": "agents",
"description": "What AI agents can buy, and at what price, measured every day: about 92,700 x402 paid endpoints with prices, MCP servers, and price checks against the market.",
"url": "https://api.lilambd.com/agents",
"license": "Facts measured by Lilambd; listing texts belong to their publishers",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/agents"
}
},
{
"@type": "Dataset",
"name": "Airports of the World",
"identifier": "airports",
"description": "Airport lookup for travel apps, flight tools, logistics and games: 86,329 airports, airfields, heliports and seaplane bases with IATA/ICAO codes, coordinates and nearby search.",
"url": "https://api.lilambd.com/airports",
"license": "Public domain",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/airports"
}
},
{
"@type": "Dataset",
"name": "Color Names: 30,000+ Named Colors",
"identifier": "colors",
"description": "Give every color a human name: 30,242 named colors with hex and RGB, nearest name for any hex, search and random palettes.",
"url": "https://api.lilambd.com/colors",
"license": "MIT",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/colors"
}
},
{
"@type": "Dataset",
"name": "Armed Conflict Events by Country and Region",
"identifier": "conflict",
"description": "Clean yearly conflict numbers 1989-2025 for every country and first-level region: events, best-estimate deaths and civilian deaths.",
"url": "https://api.lilambd.com/conflict",
"license": "CC BY 4.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/conflict"
}
},
{
"@type": "Dataset",
"name": "Stock Exchanges and Trading Venues (MIC)",
"identifier": "exchanges",
"description": "Look up any of 2,883 exchanges and trading venues by ISO 10383 Market Identifier Code.",
"url": "https://api.lilambd.com/exchanges",
"license": "ISO 10383 public list",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/exchanges"
}
},
{
"@type": "Dataset",
"name": "Exposure brief: one finished security answer per company domain or tech stack",
"identifier": "exposure",
"description": "One call returns a finished security answer about a company domain or a tech stack: breach history and every actively exploited CVE in its vendors and products.",
"url": "https://api.lilambd.com/exposure",
"license": "per source; attribution in every response",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/exposure"
}
},
{
"@type": "Dataset",
"name": "Japan Municipality Statistics",
"identifier": "japan",
"description": "Official statistics for all 1,741 cities, towns and villages in Japan in one JSON API: 120+ indicators from population to land prices and flood risk.",
"url": "https://api.lilambd.com/japan",
"license": "CC BY 4.0 compatible (Government of Japan Standard Terms of Use 2.0)",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/japan"
}
},
{
"@type": "Dataset",
"name": "Kinds: linked ledgers of kinds of things (instruments, woods, alloys, elements)",
"identifier": "kinds",
"description": "Kinds of things in one shared shape, linked to what they are made from: 2,392 musical instruments, 504 woods, 285 alloys and 174 elements.",
"url": "https://api.lilambd.com/kinds",
"license": "CC0-1.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/kinds"
}
},
{
"@type": "Dataset",
"name": "Koyomi: Calendars, Holidays and Helplines for AI Answers",
"identifier": "koyomi",
"description": "Data that grounds what people ask AI about fortune, love and daily life: computed calendars for any date and place, world public holidays and verified listening helplines.",
"url": "https://api.lilambd.com/koyomi",
"license": "Computed values CC0; holidays CC BY-SA 3.0 (date-holidays); helplines facts with source_url",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/koyomi"
}
},
{
"@type": "Dataset",
"name": "World Languages (Glottolog)",
"identifier": "languages",
"description": "8,120 world languages with Glottocode and ISO 639-3, family, countries where spoken and endangerment status.",
"url": "https://api.lilambd.com/languages",
"license": "CC BY 4.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/languages"
}
},
{
"@type": "Dataset",
"name": "Open Source Licenses (SPDX)",
"identifier": "licenses",
"description": "All 740 SPDX licences with official id, OSI-approved and FSF-libre flags, deprecated flag and reference links.",
"url": "https://api.lilambd.com/licenses",
"license": "CC0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/licenses"
}
},
{
"@type": "Dataset",
"name": "Local Markets: markets away from big cities",
"identifier": "local-markets",
"description": "Every recorded market place tagged by how far it sits from cities, so you can ask for village and remote markets that big catalogues bury.",
"url": "https://api.lilambd.com/local-markets",
"license": "CDLA-Permissive-2.0 (places); locality values CC0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/local-markets"
}
},
{
"@type": "Dataset",
"name": "World Markets: Farmers, Flea, Night and Fish Markets",
"identifier": "markets",
"description": "Find real-world markets anywhere: 137,975 farmers', flea, night and fish markets, bazaars and fairs in 207 countries.",
"url": "https://api.lilambd.com/markets",
"license": "CDLA-Permissive-2.0 / Apache-2.0; Natural Earth public domain",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/markets"
}
},
{
"@type": "Dataset",
"name": "World Organizations: Research Bodies Societies Funders and Publishers",
"identifier": "orgs",
"description": "195,967 organisations that are not just companies or governments (research institutions, funders, publishers) plus 606,825 US nonprofits.",
"url": "https://api.lilambd.com/orgs",
"license": "CC0 (OpenAlex); US government work (IRS)",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/orgs"
}
},
{
"@type": "Dataset",
"name": "Pet entry: can my dog or cat cross this border in time?",
"identifier": "pet-entry",
"description": "Official rules for taking a dog, cat or ferret into another country, with the shortest number of days from scratch to legal entry, each row cited to the government page.",
"url": "https://api.lilambd.com/pet-entry",
"license": "Facts from public government pages; Lilambd shaping CC BY 4.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/pet-entry"
}
},
{
"@type": "Dataset",
"name": "Online Platforms Directory",
"identifier": "platforms",
"description": "5,001 of the world's online platforms (app stores, social, streaming, retail, payments, delivery and more) with country, website and parent company.",
"url": "https://api.lilambd.com/platforms",
"license": "CC0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/platforms"
}
},
{
"@type": "Dataset",
"name": "Power Plants of the World",
"identifier": "power",
"description": "34,936 power plants in 167 countries (5.7 TW in total) with capacity, fuel, coordinates, owner and commissioning year.",
"url": "https://api.lilambd.com/power",
"license": "CC BY 4.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/power"
}
},
{
"@type": "Dataset",
"name": "States and Provinces of the World + Land Stats",
"identifier": "regions",
"description": "Every first-level region on Earth (4,596 states, provinces and prefectures) with ISO 3166-2 code, local names and satellite land statistics.",
"url": "https://api.lilambd.com/regions",
"license": "Public domain (boundaries); CC BY 4.0 (indicators)",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/regions"
}
},
{
"@type": "Dataset",
"name": "What Is Rising in the World Today",
"identifier": "rising",
"description": "A daily answer, not raw data: what jumped since the previous measured day across npm, GitHub, Hugging Face and world events.",
"url": "https://api.lilambd.com/rising",
"license": "Derived counts; cite GDELT Project; npm/HF/GitHub public metadata",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/rising"
}
},
{
"@type": "Dataset",
"name": "World Science Output by Country and Field",
"identifier": "science",
"description": "The shape of world research in one API, counted from all 464,765,485 OpenAlex works: rankings, per-million gaps, open-access share and fastest-rising subfields.",
"url": "https://api.lilambd.com/science",
"license": "CC0 (OpenAlex)",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/science"
}
},
{
"@type": "Dataset",
"name": "Security ledgers: exploited CVEs (CISA KEV + EPSS + NVD), breach disclosures, change feed",
"identifier": "security",
"description": "Fresh, sourced security facts in one joined shape: every actively exploited CVE (CISA KEV) with EPSS score and NVD details, plus organisation-level breach records.",
"url": "https://api.lilambd.com/security",
"license": "Per source; attribution in every response",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/security"
}
},
{
"@type": "Dataset",
"name": "Travel meds: can I bring this medicine into this country?",
"identifier": "travel-meds",
"description": "Official rules for carrying personal medicines across borders: days of supply allowed, which classes need a permit, how to apply and what is banned, each with its government source.",
"url": "https://api.lilambd.com/travel-meds",
"license": "Facts from public government pages; Lilambd shaping CC BY 4.0",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/travel-meds"
}
},
{
"@type": "Dataset",
"name": "Unit Converter and Physical Constants",
"identifier": "units",
"description": "Correct unit maths for apps, games and AI agents: convert between 2,932 units, look up 355 CODATA constants and 3,352 isotopes.",
"url": "https://api.lilambd.com/units",
"license": "CC BY 4.0 (QUDT); US government work (NIST)",
"creator": {
"@id": "https://api.lilambd.com/#org"
},
"isAccessibleForFree": false,
"distribution": {
"@type": "DataDownload",
"encodingFormat": "application/json",
"contentUrl": "https://api.lilambd.com/units"
}
}
]
}
]
}
</script>
<style>
:root{--bg:#fbfaf7;--fg:#1d1f23;--mut:#5d6470;--line:#e2dfd8;--card:#ffffff;--acc:#1f5fbf;--codebg:#f2f0ea;--ok:#2d7a46}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#14161a;--fg:#e7e7e4;--mut:#9aa1ac;--line:#2c3038;--card:#1b1e23;--acc:#7fb0ff;--codebg:#1f232a;--ok:#73c48e}}
:root[data-theme="dark"]{--bg:#14161a;--fg:#e7e7e4;--mut:#9aa1ac;--line:#2c3038;--card:#1b1e23;--acc:#7fb0ff;--codebg:#1f232a;--ok:#73c48e}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--acc)}
.wrap{max-width:1040px;margin:0 auto;padding:0 16px}
header{padding:48px 0 24px;border-bottom:1px solid var(--line)}
h1{font-size:clamp(28px,5vw,40px);line-height:1.15;margin:0 0 12px}
h2{font-size:22px;margin:40px 0 12px}
h3{font-size:17px;margin:20px 0 8px}
.lead{font-size:18px;color:var(--mut);max-width:720px;margin:0}
.mut{color:var(--mut);font-size:14px}
.endpoint{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:20px 0 0}
.endpoint code{font-size:15px;padding:8px 12px;background:var(--codebg);border:1px solid var(--line);border-radius:6px;word-break:break-all}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
p code,li code,td code{background:var(--codebg);padding:1px 5px;border-radius:4px;font-size:.9em}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px}
.card h3{margin:0 0 6px}
.card p{margin:0;color:var(--mut);font-size:15px}
.code{border:1px solid var(--line);border-radius:8px;overflow:hidden;margin:12px 0;background:var(--codebg)}
.bar{display:flex;justify-content:space-between;align-items:center;padding:6px 12px;border-bottom:1px solid var(--line);font-size:13px;color:var(--mut)}
.bar button{font:inherit;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:5px;padding:2px 10px;cursor:pointer}
pre{margin:0;padding:12px;overflow-x:auto;font-size:13.5px;line-height:1.5}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:8px;background:var(--card)}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-size:13px;color:var(--mut);font-weight:600;white-space:nowrap}
tr:last-child td{border-bottom:0}
td .d{color:var(--mut);font-size:13.5px;margin-top:2px}
td.p{white-space:nowrap;font-variant-numeric:tabular-nums}
td.l{font-size:13px;color:var(--mut);min-width:140px}
.free{font-size:12px;color:var(--ok);white-space:normal;max-width:180px}
ul.cols{columns:2 260px;padding-left:18px}
ul.cols li{break-inside:avoid;margin-bottom:4px}
footer{margin:48px 0 0;padding:24px 0 40px;border-top:1px solid var(--line);color:var(--mut);font-size:14px}
@media (max-width:640px){
table,thead,tbody,tr,td{display:block} thead{display:none}
tr{border-bottom:1px solid var(--line);padding:8px 0} td{border:0;padding:2px 12px}
td.p::before{content:"Price per call: ";color:var(--mut)}
td.l::before{content:"Licence: "}
}
</style>
</head>
<body>
<header>
<div class="wrap">
<p class="mut">Lilambd Crossing</p>
<h1>Lilambd Data for Agents</h1>
<p class="lead">Measured, sourced world data for AI agents: 23 JSON APIs behind one MCP endpoint. Every response carries its source, licence and data date. No account, no API key: list the tools and preview rows for free, then pay per call with x402 in USDC on Base.</p>
<div class="endpoint"><code>https://api.lilambd.com/mcp</code><span class="mut">MCP, streamable HTTP</span></div>
</div>
</header>
<main class="wrap">
<h2 id="what">What it is</h2>
<div class="grid">
<div class="card"><h3>Sourced</h3><p>Every response has a <code>meta</code> block: <code>data_as_of</code>, sources, licence, refresh and known limits.</p></div>
<div class="card"><h3>Joinable</h3><p>Shared keys across APIs: <code>country_iso2</code>, <code>admin1_iso</code> (ISO 3166-2), <code>lat</code>, <code>lon</code>.</p></div>
<div class="card"><h3>Free to inspect</h3><p><code>tools/list</code> and the <code>list_apis</code> tool are free. <code>sample=true</code> (MCP) or <code>sample=1</code> (HTTP) returns up to 3 rows at no cost.</p></div>
<div class="card"><h3>Pay per call</h3><p>x402 v2, USDC on Base (eip155:8453), from $0.005 per call. Only 200 responses are charged; errors are free.</p></div>
</div>
<h2 id="connect">Connect an agent</h2>
<p>The MCP server speaks JSON-RPC 2.0 over POST (methods <code>initialize</code>, <code>ping</code>, <code>tools/list</code>, <code>tools/call</code>). It exposes <code>list_apis</code> plus one tool per API, named by the ids in the table below. Tool arguments: <code>route</code> (for example <code>"/search"</code>), <code>params</code> (object of query strings) and <code>sample</code> (<code>true</code> for the free preview). For paid calls over MCP, put the x402 v2 payload in <code>_meta["x402/payment"]</code>.</p>
<h3>Claude Desktop</h3>
<p class="mut">Either add <code>https://api.lilambd.com/mcp</code> as a custom connector in Settings, or bridge it in <code>claude_desktop_config.json</code>:</p>
<div class="code"><div class="bar"><span>claude_desktop_config.json</span><button type="button" data-copy="c-desktop">Copy</button></div><pre id="c-desktop"><code>{
&quot;mcpServers&quot;: {
&quot;lilambd&quot;: {
&quot;command&quot;: &quot;npx&quot;,
&quot;args&quot;: [&quot;-y&quot;, &quot;mcp-remote&quot;, &quot;https://api.lilambd.com/mcp&quot;]
}
}
}</code></pre></div>
<h3>Cursor</h3>
<p class="mut"><code>~/.cursor/mcp.json</code> (global) or <code>.cursor/mcp.json</code> (project):</p>
<div class="code"><div class="bar"><span>.cursor/mcp.json</span><button type="button" data-copy="c-cursor">Copy</button></div><pre id="c-cursor"><code>{
&quot;mcpServers&quot;: {
&quot;lilambd&quot;: {
&quot;url&quot;: &quot;https://api.lilambd.com/mcp&quot;
}
}
}</code></pre></div>
<h3>Any MCP client or plain curl</h3>
<div class="code"><div class="bar"><span>shell</span><button type="button" data-copy="c-generic">Copy</button></div><pre id="c-generic"><code># Streamable HTTP, JSON-RPC 2.0 over POST
curl -s https://api.lilambd.com/mcp \
-H &#x27;Content-Type: application/json&#x27; \
-H &#x27;Accept: application/json, text/event-stream&#x27; \
-d &#x27;{&quot;jsonrpc&quot;:&quot;2.0&quot;,&quot;id&quot;:1,&quot;method&quot;:&quot;tools/list&quot;}&#x27;
# Free 3-row preview through MCP
curl -s https://api.lilambd.com/mcp \
-H &#x27;Content-Type: application/json&#x27; \
-H &#x27;Accept: application/json, text/event-stream&#x27; \
-d &#x27;{&quot;jsonrpc&quot;:&quot;2.0&quot;,&quot;id&quot;:2,&quot;method&quot;:&quot;tools/call&quot;,&quot;params&quot;:{
&quot;name&quot;:&quot;airports&quot;,
&quot;arguments&quot;:{&quot;route&quot;:&quot;/nearby&quot;,&quot;params&quot;:{&quot;lat&quot;:&quot;35.68&quot;,&quot;lon&quot;:&quot;139.76&quot;},&quot;sample&quot;:true}}}&#x27;
</code></pre></div>
<h3>Without MCP</h3>
<div class="code"><div class="bar"><span>shell</span><button type="button" data-copy="c-http">Copy</button></div><pre id="c-http"><code># Plain HTTP: free preview
curl -s &#x27;https://api.lilambd.com/units/convert?value=100&amp;from=degF&amp;to=degC&amp;sample=1&#x27;
# Paid call: first response is HTTP 402 with a PAYMENT-REQUIRED header
# (x402 v2, scheme exact, network eip155:8453, USDC). Sign it, then retry
# with a PAYMENT-SIGNATURE header. Any x402 client does this for you.
curl -si &#x27;https://api.lilambd.com/units/convert?value=100&amp;from=degF&amp;to=degC&#x27;
</code></pre></div>
<p class="mut">Clients without an x402 wallet can still use <code>tools/list</code>, <code>list_apis</code>, samples and the always-free routes. Paid calls need an x402-capable client.</p>
<h2 id="discovery">Discovery files</h2>
<ul>
<li><a href="https://api.lilambd.com/llms.txt">llms.txt</a>: short index for language models (<a href="https://api.lilambd.com/llms-full.txt">llms-full.txt</a> has every route, parameter, price, licence and source)</li>
<li><a href="https://api.lilambd.com/openapi.json">openapi.json</a>: OpenAPI 3.1, every route with parameters and <code>x-payment-info</code></li>
<li><a href="https://api.lilambd.com/.well-known/x402">/.well-known/x402</a>: x402 v2 payment requirements per resource</li>
<li><a href="https://api.lilambd.com/meta">/meta</a>: sources, licence, data date and refresh for every API</li>
<li>MCP Registry name: <code>io.github.Veniwol-Li-Lambd/lilambd-data</code></li>
</ul>
<h2 id="answers">Finished answers</h2>
<p class="mut">One call returns a finished, sourced answer instead of raw rows. USDC on Base via x402. Add <code>?sample=1</code> for a free preview.</p>
<div class="tbl"><table>
<thead><tr><th>Path</th><th>Answer</th><th>Price</th><th>Try</th></tr></thead>
<tbody>
<tr><td><code>country-economy</code></td><td><strong>Country economy brief</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/country-economy">api</a> · <a href="https://api.lilambd.com/country-economy?sample=1">sample</a></td></tr>
<tr><td><code>firm-brief</code></td><td><strong>Company brief</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/firm-brief">api</a> · <a href="https://api.lilambd.com/firm-brief?sample=1">sample</a></td></tr>
<tr><td><code>place-brief</code></td><td><strong>Place brief</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/place-brief">api</a> · <a href="https://api.lilambd.com/place-brief?sample=1">sample</a></td></tr>
<tr><td><code>rules-ahead</code></td><td><strong>Rules ahead: upcoming regulation</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/rules-ahead">api</a> · <a href="https://api.lilambd.com/rules-ahead?sample=1">sample</a></td></tr>
<tr><td><code>x402-pricing</code></td><td><strong>x402 price benchmark</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/x402-pricing">api</a> · <a href="https://api.lilambd.com/x402-pricing?sample=1">sample</a></td></tr>
<tr><td><code>world-power</code></td><td><strong>World power grid answer</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/world-power">api</a> · <a href="https://api.lilambd.com/world-power?sample=1">sample</a></td></tr>
<tr><td><code>disaster-exposure</code></td><td><strong>Disaster exposure</strong></td><td class="p">$0.50</td><td><a href="https://api.lilambd.com/disaster-exposure">api</a> · <a href="https://api.lilambd.com/disaster-exposure?sample=1">sample</a></td></tr>
<tr><td><code>next-languages</code></td><td><strong>Next languages to localise</strong></td><td class="p">$0.05</td><td><a href="https://api.lilambd.com/next-languages">api</a> · <a href="https://api.lilambd.com/next-languages?sample=1">sample</a></td></tr>
<tr><td><code>world-education</code></td><td><strong>World education answer</strong></td><td class="p">$0.05</td><td><a href="https://api.lilambd.com/world-education">api</a> · <a href="https://api.lilambd.com/world-education?sample=1">sample</a></td></tr>
<tr><td><code>world-dishes</code></td><td><strong>World dishes</strong></td><td class="p">$0.02</td><td><a href="https://api.lilambd.com/world-dishes">api</a> · <a href="https://api.lilambd.com/world-dishes?sample=1">sample</a></td></tr>
</tbody></table></div>
<h2 id="apis">APIs</h2>
<p class="mut">Prices are USDC per call on Base. "sample" opens a free 3-row preview over plain HTTP.</p>
<div class="tbl"><table>
<thead><tr><th>MCP tool</th><th>API</th><th>Price</th><th>Licence</th><th>Try</th></tr></thead>
<tbody>
<tr><td><code>agents</code></td><td><strong>AI Agent Economy Census</strong><div class="d">What AI agents can buy, and at what price, measured every day: about 92,700 x402 paid endpoints with prices, MCP servers, and price checks against the market.</div></td><td class="p">$0.005</td><td class="l">Facts measured by Lilambd; listing texts belong to their publishers</td><td><a href="https://api.lilambd.com/agents/summary?sample=1">sample</a></td></tr>
<tr><td><code>airports</code></td><td><strong>Airports of the World</strong><div class="d">Airport lookup for travel apps, flight tools, logistics and games: 86,329 airports, airfields, heliports and seaplane bases with IATA/ICAO codes, coordinates and nearby search.</div></td><td class="p">$0.005</td><td class="l">Public domain</td><td><a href="https://api.lilambd.com/airports/nearby?lat=35.68&amp;lon=139.76&amp;sample=1">sample</a></td></tr>
<tr><td><code>colors</code></td><td><strong>Color Names: 30,000+ Named Colors</strong><div class="d">Give every color a human name: 30,242 named colors with hex and RGB, nearest name for any hex, search and random palettes.</div></td><td class="p">$0.005</td><td class="l">MIT</td><td><a href="https://api.lilambd.com/colors/nearest?hex=ff8800&amp;sample=1">sample</a></td></tr>
<tr><td><code>conflict</code></td><td><strong>Armed Conflict Events by Country and Region</strong><div class="d">Clean yearly conflict numbers 1989-2025 for every country and first-level region: events, best-estimate deaths and civilian deaths.</div></td><td class="p">$0.005</td><td class="l">CC BY 4.0</td><td><a href="https://api.lilambd.com/conflict/regions?sample=1">sample</a></td></tr>
<tr><td><code>exchanges</code></td><td><strong>Stock Exchanges and Trading Venues (MIC)</strong><div class="d">Look up any of 2,883 exchanges and trading venues by ISO 10383 Market Identifier Code.</div></td><td class="p">$0.005</td><td class="l">ISO 10383 public list</td><td><a href="https://api.lilambd.com/exchanges/search?sample=1">sample</a></td></tr>
<tr><td><code>exposure</code></td><td><strong>Exposure brief: one finished security answer per company domain or tech stack</strong><div class="d">One call returns a finished security answer about a company domain or a tech stack: breach history and every actively exploited CVE in its vendors and products.</div></td><td class="p">$0.5</td><td class="l">per source; attribution in every response</td><td><a href="https://api.lilambd.com/exposure/brief?domain=fortinet.com&amp;sample=1">sample</a></td></tr>
<tr><td><code>japan</code></td><td><strong>Japan Municipality Statistics</strong><div class="d">Official statistics for all 1,741 cities, towns and villages in Japan in one JSON API: 120+ indicators from population to land prices and flood risk.</div></td><td class="p">$0.005</td><td class="l">CC BY 4.0 compatible (Government of Japan Standard Terms of Use 2.0)</td><td><a href="https://api.lilambd.com/japan/municipalities?sample=1">sample</a></td></tr>
<tr><td><code>kinds</code></td><td><strong>Kinds: linked ledgers of kinds of things (instruments, woods, alloys, elements)</strong><div class="d">Kinds of things in one shared shape, linked to what they are made from: 2,392 musical instruments, 504 woods, 285 alloys and 174 elements.</div></td><td class="p">$0.05</td><td class="l">CC0-1.0</td><td><a href="https://api.lilambd.com/kinds/chain?id=Q6607&amp;sample=1">sample</a></td></tr>
<tr><td><code>koyomi</code></td><td><strong>Koyomi: Calendars, Holidays and Helplines for AI Answers</strong><div class="d">Data that grounds what people ask AI about fortune, love and daily life: computed calendars for any date and place, world public holidays and verified listening helplines.</div></td><td class="p">$0.05<div class="free">Free: /koyomi/helplines, /koyomi/topics, /koyomi/rules</div></td><td class="l">Computed values CC0; holidays CC BY-SA 3.0 (date-holidays); helplines facts with source_url</td><td><a href="https://api.lilambd.com/koyomi/day?sample=1">sample</a></td></tr>
<tr><td><code>languages</code></td><td><strong>World Languages (Glottolog)</strong><div class="d">8,120 world languages with Glottocode and ISO 639-3, family, countries where spoken and endangerment status.</div></td><td class="p">$0.005</td><td class="l">CC BY 4.0</td><td><a href="https://api.lilambd.com/languages/search?sample=1">sample</a></td></tr>
<tr><td><code>licenses</code></td><td><strong>Open Source Licenses (SPDX)</strong><div class="d">All 740 SPDX licences with official id, OSI-approved and FSF-libre flags, deprecated flag and reference links.</div></td><td class="p">$0.005</td><td class="l">CC0</td><td><a href="https://api.lilambd.com/licenses/search?sample=1">sample</a></td></tr>
<tr><td><code>local-markets</code></td><td><strong>Local Markets: markets away from big cities</strong><div class="d">Every recorded market place tagged by how far it sits from cities, so you can ask for village and remote markets that big catalogues bury.</div></td><td class="p">$0.05</td><td class="l">CDLA-Permissive-2.0 (places); locality values CC0</td><td><a href="https://api.lilambd.com/local-markets/near?lat=-1.29&amp;lon=36.82&amp;sample=1">sample</a></td></tr>
<tr><td><code>markets</code></td><td><strong>World Markets: Farmers, Flea, Night and Fish Markets</strong><div class="d">Find real-world markets anywhere: 137,975 farmers&#x27;, flea, night and fish markets, bazaars and fairs in 207 countries.</div></td><td class="p">$0.005</td><td class="l">CDLA-Permissive-2.0 / Apache-2.0; Natural Earth public domain</td><td><a href="https://api.lilambd.com/markets/nearby?lat=35.68&amp;lon=139.76&amp;sample=1">sample</a></td></tr>
<tr><td><code>orgs</code></td><td><strong>World Organizations: Research Bodies Societies Funders and Publishers</strong><div class="d">195,967 organisations that are not just companies or governments (research institutions, funders, publishers) plus 606,825 US nonprofits.</div></td><td class="p">$0.005</td><td class="l">CC0 (OpenAlex); US government work (IRS)</td><td><a href="https://api.lilambd.com/orgs/search?sample=1">sample</a></td></tr>
<tr><td><code>pet-entry</code></td><td><strong>Pet entry: can my dog or cat cross this border in time?</strong><div class="d">Official rules for taking a dog, cat or ferret into another country, with the shortest number of days from scratch to legal entry, each row cited to the government page.</div></td><td class="p">$0.5<div class="free">Free: /pet-entry/countries</div></td><td class="l">Facts from public government pages; Lilambd shaping CC BY 4.0</td><td><a href="https://api.lilambd.com/pet-entry/answer?to=JP&amp;sample=1">sample</a></td></tr>
<tr><td><code>platforms</code></td><td><strong>Online Platforms Directory</strong><div class="d">5,001 of the world&#x27;s online platforms (app stores, social, streaming, retail, payments, delivery and more) with country, website and parent company.</div></td><td class="p">$0.005</td><td class="l">CC0</td><td><a href="https://api.lilambd.com/platforms/search?sample=1">sample</a></td></tr>
<tr><td><code>power</code></td><td><strong>Power Plants of the World</strong><div class="d">34,936 power plants in 167 countries (5.7 TW in total) with capacity, fuel, coordinates, owner and commissioning year.</div></td><td class="p">$0.005</td><td class="l">CC BY 4.0</td><td><a href="https://api.lilambd.com/power/nearby?lat=35.68&amp;lon=139.76&amp;sample=1">sample</a></td></tr>
<tr><td><code>regions</code></td><td><strong>States and Provinces of the World + Land Stats</strong><div class="d">Every first-level region on Earth (4,596 states, provinces and prefectures) with ISO 3166-2 code, local names and satellite land statistics.</div></td><td class="p">$0.005</td><td class="l">Public domain (boundaries); CC BY 4.0 (indicators)</td><td><a href="https://api.lilambd.com/regions/search?sample=1">sample</a></td></tr>
<tr><td><code>rising</code></td><td><strong>What Is Rising in the World Today</strong><div class="d">A daily answer, not raw data: what jumped since the previous measured day across npm, GitHub, Hugging Face and world events.</div></td><td class="p">$0.05<div class="free">Free: /rising/days</div></td><td class="l">Derived counts; cite GDELT Project; npm/HF/GitHub public metadata</td><td><a href="https://api.lilambd.com/rising/days?sample=1">sample</a></td></tr>
<tr><td><code>science</code></td><td><strong>World Science Output by Country and Field</strong><div class="d">The shape of world research in one API, counted from all 464,765,485 OpenAlex works: rankings, per-million gaps, open-access share and fastest-rising subfields.</div></td><td class="p">$0.005</td><td class="l">CC0 (OpenAlex)</td><td><a href="https://api.lilambd.com/science/rank?sample=1">sample</a></td></tr>
<tr><td><code>security</code></td><td><strong>Security ledgers: exploited CVEs (CISA KEV + EPSS + NVD), breach disclosures, change feed</strong><div class="d">Fresh, sourced security facts in one joined shape: every actively exploited CVE (CISA KEV) with EPSS score and NVD details, plus organisation-level breach records.</div></td><td class="p">$0.01<div class="free">Free: /security/stats, /security/gaps</div></td><td class="l">Per source; attribution in every response</td><td><a href="https://api.lilambd.com/security/hot?sample=1">sample</a></td></tr>
<tr><td><code>travel-meds</code></td><td><strong>Travel meds: can I bring this medicine into this country?</strong><div class="d">Official rules for carrying personal medicines across borders: days of supply allowed, which classes need a permit, how to apply and what is banned, each with its government source.</div></td><td class="p">$0.5<div class="free">Free: /travel-meds/countries</div></td><td class="l">Facts from public government pages; Lilambd shaping CC BY 4.0</td><td><a href="https://api.lilambd.com/travel-meds/answer?country=JP&amp;sample=1">sample</a></td></tr>
<tr><td><code>units</code></td><td><strong>Unit Converter and Physical Constants</strong><div class="d">Correct unit maths for apps, games and AI agents: convert between 2,932 units, look up 355 CODATA constants and 3,352 isotopes.</div></td><td class="p">$0.005</td><td class="l">CC BY 4.0 (QUDT); US government work (NIST)</td><td><a href="https://api.lilambd.com/units/convert?value=100&amp;from=degF&amp;to=degC&amp;sample=1">sample</a></td></tr>
</tbody></table></div>
<p class="mut">If a person may be in crisis, call <code>/koyomi/helplines</code> (free) first. Travel-meds, pet-entry and exposure answers are facts with cited sources, not medical, veterinary, legal or security advice. No personal records are served.</p>
<h2 id="datasets">Free datasets</h2>
<p>Bulk files for training, analysis and offline use on <a href="https://huggingface.co/Lilambd">Hugging Face</a> and <a href="https://www.kaggle.com/lilambd">Kaggle</a>:</p>
<ul class="cols">
<li><a href="https://huggingface.co/datasets/Lilambd/world-signals">World Signals (daily)</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-seeds">World Seeds</a> <span class="mut">CC BY-SA 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/japan-dpc-hospitals">Japan DPC Hospitals</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/japan-prefecture-facts">Japan by Prefecture</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-markets">World Markets</a> <span class="mut">CDLA-Permissive 2.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-marketplaces">World Marketplaces</a> <span class="mut">CDLA-Permissive 2.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-earth">World Earth Surface Ledger</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-ground">World Ground Ledger</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-hazard">World Hazard Ledger</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-prices">World Prices Long Record</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-biodiversity-cells">World Biodiversity Cells</a> <span class="mut">CC BY-NC 4.0 (non-commercial)</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-science">World Science (papers by field x country x year)</a> <span class="mut">CC0 1.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/machine-economy-daily">Machine Economy Daily Census</a> <span class="mut">CC BY 4.0</span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/security-daily">security-daily</a> <span class="mut"></span></li>
<li><a href="https://huggingface.co/datasets/Lilambd/world-pulse-daily">world-pulse-daily</a> <span class="mut"></span></li>
</ul>
<p>Game and sound assets built from the same sources are on <a href="https://lilambdcrossing.itch.io">itch.io</a>.</p>
</main>
<footer>
<div class="wrap">
<p>Lilambd (brand Lilambd Crossing) &middot; <a href="mailto:hello@lilambd.com">hello@lilambd.com</a></p>
<p><a href="https://huggingface.co/Lilambd">Hugging Face</a> &middot; <a href="https://www.kaggle.com/lilambd">Kaggle</a> &middot; <a href="https://lilambdcrossing.itch.io">itch.io</a> &middot; <a href="https://api.lilambd.com/openapi.json">OpenAPI</a> &middot; <a href="https://api.lilambd.com/llms.txt">llms.txt</a></p>
</div>
</footer>
<script>
document.addEventListener("click",function(ev){var b=ev.target.closest("button[data-copy]");if(!b)return;var t=document.getElementById(b.getAttribute("data-copy")).innerText;
function done(){b.textContent="Copied";setTimeout(function(){b.textContent="Copy"},1500)}
if(navigator.clipboard&&navigator.clipboard.writeText){navigator.clipboard.writeText(t).then(done,function(){})}});
</script>
</body>
</html>