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| #!/usr/bin/env python | |
| """RAG Q&A with Citations — ask a question, get an answer grounded ONLY in a curated | |
| construction & remodeling knowledge base, with inline [n] citations to the exact sources — | |
| and an honest "I couldn't find that in the knowledge base" when the answer isn't there. | |
| Real RAG: chunk -> embed (fastembed, ONNX/CPU, no torch) -> retrieve (cosine) -> Claude answers | |
| from the retrieved sources only, citing each. No hallucinating past the sources. | |
| pip install flask requests anthropic fastembed numpy | |
| python app.py # http://127.0.0.1:7860 | |
| Project #10 of the "30 Projects in 15 Days" challenge — GritAI. | |
| """ | |
| import os, re, json | |
| import numpy as np | |
| from flask import Flask, request, jsonify, Response | |
| PORT = int(os.environ.get("PORT", "7860")) | |
| ANTHROPIC_KEY = (os.environ.get("ANTHROPIC_API_KEY") or "").strip() or None | |
| ANTHROPIC_MODEL = os.environ.get("ANTHROPIC_MODEL", "claude-haiku-4-5") | |
| TOP_K = 4 | |
| # ============================ Construction & Remodeling KB ============================ | |
| # General, public industry knowledge (no proprietary data). Each entry is a citable source. | |
| KB = [ | |
| {"t": "Do I need a building permit?", | |
| "x": "Most structural, electrical, plumbing, and mechanical work requires a permit from your local " | |
| "building department — including additions, removing or moving walls, new circuits, water-heater " | |
| "replacement, decks over a certain height, and re-roofing in many areas. Cosmetic work (paint, " | |
| "flooring, cabinets, fixtures that reuse existing connections) usually does not. Permits exist to " | |
| "ensure work meets code and passes inspection; unpermitted work can cause problems when you sell. " | |
| "When unsure, call your local building department and ask — it's free."}, | |
| {"t": "How permits and inspections work", | |
| "x": "You (or your licensed contractor) submit plans and pay a fee; the department issues the permit; " | |
| "work is done in phases with inspections at key points — typically a rough-in inspection (framing, " | |
| "electrical, plumbing before walls are closed) and a final inspection when complete. Don't cover " | |
| "walls until the rough-in passes. Keep the permit posted on site. Final sign-off closes the permit."}, | |
| {"t": "Hiring a contractor: licenses and insurance", | |
| "x": "Verify the contractor holds a current state license for the trade and carries liability insurance " | |
| "and workers' compensation. Ask for the license number and confirm it with your state licensing " | |
| "board. Uninsured workers injured on your property can become your liability. For larger jobs, a " | |
| "general contractor coordinates subcontractors and pulls permits."}, | |
| {"t": "Getting and comparing bids", | |
| "x": "Get at least three written bids for the same defined scope so they're comparable. A good bid itemizes " | |
| "labor, materials, permits, timeline, and payment schedule. Be wary of a bid far below the others — it " | |
| "often means missing scope or corners cut. Don't automatically pick the lowest; weigh reputation, " | |
| "references, and clarity."}, | |
| {"t": "Contracts, deposits, and payment schedules", | |
| "x": "Always use a written contract listing scope, materials, price, start/finish dates, and a payment " | |
| "schedule tied to milestones. A common structure is a modest deposit, progress payments as phases " | |
| "complete, and a final payment after the work passes inspection and you're satisfied. Avoid paying " | |
| "large sums up front; never pay in full before work is done."}, | |
| {"t": "Mechanic's liens and lien waivers", | |
| "x": "If a contractor or supplier isn't paid, they can file a mechanic's lien against your property even if " | |
| "you paid your general contractor. Protect yourself by requesting lien waivers from subcontractors and " | |
| "suppliers as they're paid, confirming the money reached them."}, | |
| {"t": "Budgeting and the contingency fund", | |
| "x": "Set aside a contingency of 10–20% of the project budget for surprises — older homes especially hide " | |
| "problems (outdated wiring, water damage, non-code framing) behind the walls. Renovations frequently " | |
| "run over when hidden conditions surface; the contingency keeps a surprise from stalling the job."}, | |
| {"t": "Kitchen remodel: scope, cost drivers, and timeline", | |
| "x": "Kitchens are among the most expensive rooms to remodel because they combine cabinetry, countertops, " | |
| "appliances, plumbing, electrical, and often flooring. Cabinetry and countertops are usually the " | |
| "biggest line items. Moving plumbing or gas lines and relocating walls adds significant cost. A typical " | |
| "mid-range kitchen remodel runs several weeks to a couple of months depending on scope and lead times " | |
| "on custom cabinets."}, | |
| {"t": "Bathroom remodel basics", | |
| "x": "Bathrooms pack plumbing, waterproofing, tile, ventilation, and electrical into a small space, so labor " | |
| "per square foot is high. Proper waterproofing behind tile in showers is critical to prevent hidden " | |
| "rot and mold. A quality exhaust fan vented outside (not into the attic) prevents moisture damage. " | |
| "Moving the toilet, tub, or shower drain locations raises cost because it means opening the floor."}, | |
| {"t": "Flooring options compared", | |
| "x": "Common choices: hardwood (durable, refinishable, higher cost, sensitive to moisture); engineered wood " | |
| "(more moisture-stable, thinner wear layer); luxury vinyl plank/LVP (waterproof, budget-friendly, great " | |
| "for kitchens/baths/basements); tile (very durable and waterproof, harder and colder underfoot); and " | |
| "carpet (soft and cheap, wears faster). Match the material to the room's moisture and traffic."}, | |
| {"t": "Interior painting: prep and product", | |
| "x": "A lasting paint job is 80% prep: clean surfaces, fill and sand holes, caulk gaps, and prime bare or " | |
| "patched areas and stains. Use the right sheen — flat/matte hides wall flaws, eggshell/satin is a good " | |
| "durable middle for most walls, and semi-gloss resists moisture on trim, kitchens, and baths. One " | |
| "gallon covers roughly 350–400 square feet per coat; most jobs need two coats."}, | |
| {"t": "Drywall: hanging, taping, and patching", | |
| "x": "Standard wall drywall is ½ inch; ceilings often use 5/8 inch to resist sagging. Screw to the studs, " | |
| "then tape and apply three coats of joint compound, sanding between coats for a smooth, feathered seam. " | |
| "Small holes are patched with mesh or a patch kit and compound; large holes need a backed drywall " | |
| "patch. Use moisture-resistant board in wet areas."}, | |
| {"t": "Framing and load-bearing walls", | |
| "x": "Walls are framed with studs spaced 16 inches on-center (sometimes 24). A load-bearing wall carries " | |
| "weight from above (roof, upper floors) down to the foundation; removing or altering one requires a " | |
| "properly sized beam and usually an engineer and a permit. Never remove a wall without confirming " | |
| "whether it's load-bearing — getting this wrong is dangerous."}, | |
| {"t": "Roofing: materials and when to replace", | |
| "x": "Asphalt shingles are the most common and last roughly 15–30 years depending on quality; metal roofs " | |
| "last longer at a higher cost. Signs you need a new roof include curling or missing shingles, granules " | |
| "collecting in gutters, daylight or leaks in the attic, and sagging. Re-roofing usually needs a permit " | |
| "and an inspection."}, | |
| {"t": "Insulation and energy efficiency (R-value)", | |
| "x": "Insulation is rated by R-value — higher means more resistance to heat flow. Attics benefit most from " | |
| "added insulation and are usually the cheapest place to improve efficiency. Air-sealing gaps and leaks " | |
| "before insulating matters as much as the insulation itself. Common types include fiberglass batts, " | |
| "blown-in cellulose, and spray foam (higher cost, also air-seals)."}, | |
| {"t": "Electrical basics and when to call a pro", | |
| "x": "Simple like-for-like swaps (a switch or outlet) are often DIY, but new circuits, panel work, and " | |
| "anything you're unsure about should go to a licensed electrician and be permitted. Kitchens, baths, " | |
| "garages, and outdoors require GFCI protection; many circuits now require AFCI breakers. Never work on " | |
| "a live circuit — shut off the breaker and verify it's dead."}, | |
| {"t": "Plumbing basics and rough-in", | |
| "x": "Plumbing is installed in two stages: the rough-in (supply and drain lines inside the walls and floor, " | |
| "inspected before closing up) and the finish (fixtures and trim). Proper drain slope (about ¼ inch per " | |
| "foot) and venting are required for drains to flow and to keep sewer gas out. Relocating fixtures means " | |
| "opening walls or floors, which drives cost."}, | |
| {"t": "Decks: footings, materials, and permits", | |
| "x": "Decks generally need a permit and rest on footings dug below the local frost line so they don't heave. " | |
| "Materials range from pressure-treated lumber (cheapest) to cedar to composite (low-maintenance, higher " | |
| "cost). Proper flashing where the deck ledger meets the house prevents rot and is a common failure " | |
| "point. Railings and stair dimensions are code-regulated for safety."}, | |
| {"t": "Concrete and foundation cracks", | |
| "x": "Thin, hairline cracks in concrete are common from normal curing and shrinkage and are usually cosmetic. " | |
| "Warning signs that need a professional include cracks wider than about ¼ inch, horizontal cracks in " | |
| "foundation walls, cracks that are growing, or doors and windows that suddenly stick — these can signal " | |
| "settlement or structural movement."}, | |
| {"t": "HVAC sizing and maintenance", | |
| "x": "Heating and cooling equipment must be correctly sized for the home — an oversized system short-cycles " | |
| "and controls humidity poorly, while undersized struggles to keep up. Sizing is done with a load " | |
| "calculation (Manual J), not a rule of thumb. Basic maintenance — changing filters regularly and an " | |
| "annual service — extends equipment life and efficiency."}, | |
| {"t": "Older homes: lead paint and asbestos", | |
| "x": "Homes built before 1978 may contain lead-based paint, and homes from roughly the 1980s and earlier may " | |
| "contain asbestos in flooring, popcorn ceilings, insulation, and duct wrap. Disturbing these during a " | |
| "remodel releases hazardous dust. Testing before demolition and using certified abatement pros for " | |
| "removal is the safe, and often legally required, path."}, | |
| {"t": "Project phases and realistic timelines", | |
| "x": "A typical renovation flows through phases: design and permitting, demolition, rough-in (framing, " | |
| "electrical, plumbing, HVAC) with inspections, insulation and drywall, then finishes (paint, flooring, " | |
| "cabinets, trim, fixtures) and a final inspection. Material lead times — especially custom cabinets, " | |
| "windows, and specialty tile — often drive the schedule more than the labor does."}, | |
| {"t": "Return on investment of common projects", | |
| "x": "Not all projects return equal value at resale. Curb-appeal and maintenance items (a new front door, " | |
| "garage door, fresh paint, and minor kitchen and bath updates) tend to recoup a larger share of their " | |
| "cost than high-end additions. Over-improving beyond the neighborhood's price range rarely pays back " | |
| "the full investment."}, | |
| ] | |
| # ============================ embeddings + retrieval ============================ | |
| _EMB = None | |
| _MAT = None # normalized KB embedding matrix | |
| def emb_model(): | |
| global _EMB | |
| if _EMB is None: | |
| from fastembed import TextEmbedding | |
| _EMB = TextEmbedding("BAAI/bge-small-en-v1.5") | |
| return _EMB | |
| def _norm(m): | |
| n = np.linalg.norm(m, axis=-1, keepdims=True) | |
| return m / np.clip(n, 1e-8, None) | |
| def build_index(): | |
| global _MAT | |
| texts = [f"{d['t']}. {d['x']}" for d in KB] | |
| vecs = np.array(list(emb_model().passage_embed(texts)), dtype=np.float32) | |
| _MAT = _norm(vecs) | |
| if os.environ.get("SPACE_ID"): # warm the index at startup on the Space | |
| try: | |
| build_index() | |
| print("[startup] KB index built", flush=True) | |
| except Exception as _e: | |
| print(f"[startup] index build failed (will retry on first ask): {_e}", flush=True) | |
| def retrieve(question, k=TOP_K): | |
| if _MAT is None: | |
| build_index() | |
| q = _norm(np.array(list(emb_model().query_embed([question]))[0], dtype=np.float32).reshape(1, -1))[0] | |
| sims = _MAT @ q | |
| idx = np.argsort(-sims)[:k] | |
| return [(int(i), float(sims[i])) for i in idx] | |
| TOOL = { | |
| "name": "answer", | |
| "description": "Answer the question using ONLY the provided sources.", | |
| "input_schema": {"type": "object", "properties": { | |
| "found": {"type": "boolean", "description": "true only if the sources actually answer the question."}, | |
| "answer": {"type": "string", "description": "The answer, grounded in the sources, with inline citations " | |
| "like [1] or [2] pointing to the source numbers used. If found is false, briefly say the " | |
| "knowledge base doesn't cover it."}, | |
| "used": {"type": "array", "items": {"type": "integer"}, "description": "Source numbers actually cited."}}, | |
| "required": ["found", "answer", "used"]}, | |
| } | |
| def answer_question(question): | |
| hits = retrieve(question) | |
| sources = [{"n": i + 1, "title": KB[idx]["t"], "text": KB[idx]["x"], "score": round(sc, 3)} | |
| for i, (idx, sc) in enumerate(hits)] | |
| if not ANTHROPIC_KEY: | |
| return {"found": False, "answer": "Set ANTHROPIC_API_KEY on the server to generate answers.", | |
| "used": [], "sources": sources} | |
| block = "\n\n".join(f"[{s['n']}] {s['title']}\n{s['text']}" for s in sources) | |
| sysp = ("You answer questions about construction and home remodeling using ONLY the numbered SOURCES " | |
| "provided. Ground every claim in the sources and cite them inline as [n]. If the sources do not " | |
| "actually contain the answer, set found=false and say the knowledge base doesn't cover it — never " | |
| "guess or use outside knowledge. Be concise and practical.") | |
| try: | |
| import requests | |
| resp = requests.post("https://api.anthropic.com/v1/messages", | |
| headers={"x-api-key": ANTHROPIC_KEY, "anthropic-version": "2023-06-01", | |
| "content-type": "application/json"}, | |
| json={"model": ANTHROPIC_MODEL, "max_tokens": 900, "system": sysp, | |
| "tools": [TOOL], "tool_choice": {"type": "tool", "name": "answer"}, | |
| "messages": [{"role": "user", "content": f"SOURCES:\n{block}\n\nQUESTION: {question}"}]}, | |
| timeout=60) | |
| resp.raise_for_status() | |
| content = resp.json().get("content", []) | |
| data = next((b.get("input") for b in content if b.get("type") == "tool_use"), {}) or {} | |
| except Exception as e: | |
| import sys; print("answer error:", type(e).__name__, file=sys.stderr, flush=True) # no repr — never log secrets | |
| return {"found": False, "answer": "Something went wrong — please try again.", "used": [], "sources": sources} | |
| used = set(data.get("used", []) or []) | |
| shown = [s for s in sources if s["n"] in used] or (sources if data.get("found") else []) | |
| return {"found": bool(data.get("found")), "answer": data.get("answer", ""), "used": sorted(used), | |
| "sources": shown} | |
| app = Flask(__name__) | |
| app.config["MAX_CONTENT_LENGTH"] = 256 * 1024 | |
| def home(): | |
| return Response(PAGE, mimetype="text/html") | |
| def api_ask(): | |
| q = (request.get_json(force=True).get("question") or "").strip()[:600] | |
| if not q: | |
| return jsonify(error="Ask a question."), 400 | |
| return jsonify(answer_question(q)) | |
| PAGE = """<!doctype html><html lang="en"><head><meta charset="utf-8"> | |
| <title>GritAI · Cited Answers — Construction & Remodeling</title> | |
| <meta name="viewport" content="width=device-width,initial-scale=1"> | |
| <link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> | |
| <link href="https://fonts.googleapis.com/css2?family=Archivo:wght@700;800;900&family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap" rel="stylesheet"> | |
| <style> | |
| :root{--bg:#0a0b0e;--bg2:#0e1015;--panel:#111318;--ink:#eef0f4;--dim:#9aa1b0;--dim2:#5f6675;--line:#20242e;--line2:#2b303c; | |
| --grit:#ff5a2a;--grit2:#ff7d54;--grit-dim:#c9451f;--ok:#5fd08a; | |
| --disp:'Archivo',system-ui,sans-serif;--body:'IBM Plex Sans',system-ui,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace} | |
| *{box-sizing:border-box}html,body{height:100%} | |
| body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.6;position:relative;overflow-x:hidden} | |
| body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;background:linear-gradient(0deg,transparent 95%,rgba(255,90,42,.04) 100%), | |
| repeating-linear-gradient(90deg,transparent 0 63px,rgba(255,255,255,.018) 63px 64px),repeating-linear-gradient(0deg,transparent 0 63px,rgba(255,255,255,.018) 63px 64px),radial-gradient(120% 80% at 50% -10%,#141821 0%,var(--bg) 55%)} | |
| .wrap{position:relative;z-index:1;max-width:900px;margin:0 auto;padding:0 28px 70px} | |
| header{display:flex;align-items:center;gap:16px;padding:22px 0 18px;border-bottom:1px solid var(--line);animation:fade .6s .02s both} | |
| .mark{width:38px;height:38px;flex:none} | |
| .brand .co{font-family:var(--disp);font-weight:900;font-size:19px;letter-spacing:.5px}.brand .co b{color:var(--grit)} | |
| .brand .sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--dim2);margin-top:5px} | |
| .tags{margin-left:auto;display:flex;gap:8px} | |
| .tag{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--dim);border:1px solid var(--line2);border-radius:2px;padding:5px 9px} | |
| .tag.hot{color:var(--grit);border-color:var(--grit-dim)} | |
| .hero{padding:32px 0 24px;animation:fade .6s .12s both} | |
| .hero h1{font-family:var(--disp);font-weight:800;font-size:clamp(28px,4.8vw,46px);line-height:1.03;letter-spacing:-.02em;margin:0;max-width:18ch} | |
| .hero h1 em{font-style:normal;color:var(--grit)} | |
| .hero p{color:var(--dim);max-width:60ch;margin:14px 0 0} | |
| .sec{display:flex;align-items:center;gap:14px;margin:26px 0 12px} | |
| .sec .num{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--grit)} | |
| .sec .name{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.26em;text-transform:uppercase;color:var(--dim)} | |
| .sec .rule{flex:1;height:1px;background:linear-gradient(90deg,var(--line2),transparent)} | |
| .ask{animation:fade .6s .2s both} | |
| .field{display:flex;align-items:stretch;border:1px solid var(--line2);border-radius:3px;background:var(--panel);overflow:hidden;transition:border-color .18s} | |
| .field:focus-within{border-color:var(--grit-dim)} | |
| .field .car{font-family:var(--mono);color:var(--grit);padding:16px 0 16px 16px;user-select:none} | |
| .field input{flex:1;background:transparent;border:0;outline:none;color:var(--ink);font-family:var(--body);font-size:15.5px;padding:16px 14px} | |
| .field input::placeholder{color:var(--dim2)} | |
| .run{border:0;background:var(--grit);color:#140a06;font-family:var(--mono);font-weight:600;font-size:13px;letter-spacing:.14em;text-transform:uppercase;padding:0 24px;cursor:pointer;transition:.16s} | |
| .run:hover{background:var(--grit2);box-shadow:0 0 26px -4px rgba(255,90,42,.55)}.run:disabled{opacity:.55;cursor:default} | |
| .ex{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px} | |
| .chip{font-family:var(--mono);font-size:12px;color:var(--dim);background:var(--panel);border:1px solid var(--line);border-radius:2px;padding:8px 11px;cursor:pointer;transition:.15s} | |
| .chip:hover{color:var(--grit);border-color:var(--grit-dim)} | |
| .out{display:none}.out.show{display:block} | |
| .ans{border:1px solid var(--line2);border-left:2px solid var(--grit);border-radius:3px;background:var(--panel);padding:20px 22px;font-size:16px;line-height:1.65} | |
| .ans.miss{border-left-color:var(--dim2)} | |
| .ans cite,.ct{color:var(--grit);font-family:var(--mono);font-size:.82em;font-weight:600;font-style:normal;vertical-align:super;cursor:pointer;text-decoration:none} | |
| .src{border:1px solid var(--line);border-radius:3px;background:linear-gradient(180deg,var(--panel),var(--bg2))} | |
| .srow{display:grid;grid-template-columns:30px 1fr;gap:0 12px;padding:13px 18px;border-bottom:1px solid var(--line)} | |
| .srow:last-child{border-bottom:0} | |
| .srow .sn{font-family:var(--mono);color:var(--grit);font-weight:600} | |
| .srow .st{font-family:var(--mono);font-weight:600;color:var(--grit2);font-size:13px;margin-bottom:3px} | |
| .srow .sx{color:var(--dim);font-size:13px;line-height:1.55} | |
| .spin{display:inline-flex;gap:6px;padding:16px 18px}.spin span{width:8px;height:8px;border-radius:50%;background:var(--grit);opacity:.5;animation:bd 1.2s infinite} | |
| .spin span:nth-child(2){animation-delay:.18s}.spin span:nth-child(3){animation-delay:.36s} | |
| footer{margin-top:32px;padding-top:16px;border-top:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--dim2);display:flex;gap:16px;flex-wrap:wrap} | |
| footer .sp{margin-left:auto}footer a{color:var(--dim);text-decoration:none}footer a:hover{color:var(--grit)} | |
| @keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}} | |
| @keyframes bd{0%,60%,100%{transform:translateY(0);opacity:.35}30%{transform:translateY(-6px);opacity:1}} | |
| </style></head> | |
| <body><div class="wrap"> | |
| <header> | |
| <div class="mark"><svg width="38" height="38" viewBox="0 0 38 38" fill="none"><rect x="1" y="1" width="36" height="36" rx="2" stroke="#2b303c"/><path d="M27 12.5A9 9 0 1 0 28 22H19" stroke="#ff5a2a" stroke-width="2.4" stroke-linecap="square"/><rect x="10.5" y="10.5" width="3" height="3" fill="#ff5a2a"/></svg></div> | |
| <div class="brand"><div class="co">GRIT<b>AI</b></div><div class="sub">Cited Answers</div></div> | |
| <div class="tags"><span class="tag hot">▸ Live</span><span class="tag">RAG</span><span class="tag">SDVOSB</span></div> | |
| </header> | |
| <section class="hero"> | |
| <h1>Answers you can <em>trust</em> — every claim cited.</h1> | |
| <p>Ask about construction and home remodeling. The answer is grounded only in a curated knowledge base and cites the exact sources — and it says <b>"I don't know"</b> when the answer isn't there. No made-up facts.</p> | |
| </section> | |
| <div class="sec"><span class="num">01</span><span class="name">Ask</span><span class="rule"></span></div> | |
| <div class="ask"> | |
| <div class="field"><span class="car">>_</span> | |
| <input id="q" placeholder="Do I need a permit to remove a wall?" autofocus> | |
| <button class="run" id="go" onclick="ask()">Ask ▸</button></div> | |
| <div class="ex" id="ex"></div> | |
| </div> | |
| <div class="out" id="out"> | |
| <div class="sec"><span class="num">02</span><span class="name" id="anslabel">Answer</span><span class="rule"></span></div> | |
| <div class="ans" id="answer"></div> | |
| <div class="sec" id="srchead" style="display:none"><span class="num">03</span><span class="name">Sources</span><span class="rule"></span></div> | |
| <div class="src" id="sources"></div> | |
| </div> | |
| <footer><span>RAG · fastembed + Claude · grounded, cited, honest</span> | |
| <span class="sp"><a href="https://gritai.solutions">GRITAI SOLUTIONS</a> · 30-in-15 №10</span></footer> | |
| </div><script> | |
| const EXAMPLES=["Do I need a permit to remove a wall?","How much contingency should I budget for a remodel?", | |
| "What flooring is best for a bathroom?","How do I vet a contractor before hiring?","When should I replace my roof?", | |
| "What's the best paint color for resale?"]; | |
| const $=id=>document.getElementById(id);const q=$('q'),go=$('go'),out=$('out'); | |
| function esc(s){return String(s==null?'':s).replace(/[&<>]/g,c=>({'&':'&','<':'<','>':'>'}[c]));} | |
| $('ex').innerHTML=EXAMPLES.map(e=>'<span class="chip">'+esc(e)+'</span>').join(''); | |
| $('ex').querySelectorAll('.chip').forEach(c=>c.onclick=()=>{q.value=c.textContent;ask();}); | |
| function citelink(s){return esc(s).replace(/\\[(\\d+)\\]/g,'<a class="ct" href="#src$1">[$1]</a>');} | |
| function ask(){if(go.disabled)return;const text=q.value.trim();if(!text){q.focus();return;} | |
| go.disabled=true;go.textContent='…';out.classList.add('show');$('srchead').style.display='none'; | |
| $('answer').innerHTML='<span class="spin"><span></span><span></span><span></span></span>';$('sources').innerHTML=''; | |
| fetch('/api/ask',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify({question:text})}) | |
| .then(r=>r.json()).then(d=>{ | |
| if(d.error){$('answer').textContent=d.error;return;} | |
| const miss=!d.found;$('answer').className='ans'+(miss?' miss':''); | |
| $('anslabel').textContent=miss?'Not in the knowledge base':'Answer'; | |
| $('answer').innerHTML=citelink(d.answer||''); | |
| const src=d.sources||[]; | |
| if(src.length){$('srchead').style.display='flex'; | |
| $('sources').innerHTML=src.map(s=>'<div class="srow" id="src'+s.n+'"><span class="sn">['+s.n+']</span>'+ | |
| '<div><div class="st">'+esc(s.title)+'</div><div class="sx">'+esc(s.text)+'</div></div></div>').join('');} | |
| }).catch(()=>{$('answer').textContent='Something went wrong — please try again.';}) | |
| .finally(()=>{go.disabled=false;go.textContent='Ask \\u25b8';}); | |
| } | |
| q.addEventListener('keydown',e=>{if(e.key==='Enter')ask();}); | |
| </script></body></html>""" | |
| if __name__ == "__main__": | |
| backend = "Claude API" if ANTHROPIC_KEY else "NO KEY (retrieval only)" | |
| print(f"RAG Q&A with Citations on http://127.0.0.1:{PORT} [backend: {backend}]", flush=True) | |
| app.run(host="0.0.0.0", port=PORT, threaded=True) | |