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cd8bd0a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 | import { spawn } from "node:child_process";
import { existsSync } from "node:fs";
import { homedir } from "node:os";
import { delimiter, join } from "node:path";
// cursor-agent waits on stdin when given a piped fd, so we always launch it
// with stdin closed ("ignore") so it exits as soon as it prints the model list.
function runCursorAgent(
binary: string,
args: string[],
timeoutMs: number
): Promise<{ stdout: string; stderr: string; code: number | null; signal: NodeJS.Signals | null }> {
return new Promise((resolve, reject) => {
let child;
try {
child = spawn(binary, args, { stdio: ["ignore", "pipe", "pipe"] });
} catch (err) {
reject(err);
return;
}
let stdout = "";
let stderr = "";
child.stdout.setEncoding("utf8");
child.stderr.setEncoding("utf8");
child.stdout.on("data", (chunk) => {
stdout += chunk;
});
child.stderr.on("data", (chunk) => {
stderr += chunk;
});
const killTimer = setTimeout(() => child.kill("SIGTERM"), timeoutMs);
child.on("error", (err) => {
clearTimeout(killTimer);
reject(err);
});
child.on("close", (code, signal) => {
clearTimeout(killTimer);
resolve({ stdout, stderr, code, signal });
});
});
}
// Resolve cursor-agent across common install locations, since the standalone
// Next.js server may run with a PATH that doesn't include the user's local bin.
function resolveCursorAgentBinary(): string | null {
const home = homedir();
const candidates = [
join(home, ".local", "bin", "cursor-agent"),
"/root/.local/bin/cursor-agent",
"/usr/local/bin/cursor-agent",
"/usr/bin/cursor-agent",
];
for (const candidate of candidates) {
if (existsSync(candidate)) return candidate;
}
// Fallback: PATH-based lookup (lets execFile do the resolution).
const pathDirs = (process.env.PATH || "").split(delimiter).filter(Boolean);
for (const dir of pathDirs) {
const candidate = join(dir, "cursor-agent");
if (existsSync(candidate)) return candidate;
}
return null;
}
const SEGMENT_OVERRIDES: Record<string, string> = {
gpt: "GPT",
claude: "Claude",
gemini: "Gemini",
grok: "Grok",
kimi: "Kimi",
composer: "Composer",
opus: "Opus",
sonnet: "Sonnet",
haiku: "Haiku",
codex: "Codex",
mini: "Mini",
nano: "Nano",
max: "Max",
high: "High",
low: "Low",
medium: "Medium",
xhigh: "XHigh",
none: "None",
fast: "Fast",
thinking: "Thinking",
extra: "Extra",
spark: "Spark",
preview: "Preview",
flash: "Flash",
pro: "Pro",
};
export function humanizeCursorModelId(id: string): string {
if (id === "auto") return "Auto (Server Picks)";
// Collapse digit-dash-digit suffixes (e.g. claude-opus-4-7 → claude-opus-4.7)
// so version numbers read naturally.
const collapsed = id.replace(/(\d+)-(\d+)(?=-|$)/g, "$1.$2");
return collapsed
.split("-")
.map((part) => {
if (SEGMENT_OVERRIDES[part]) return SEGMENT_OVERRIDES[part];
if (/^\d/.test(part)) return part;
return part.charAt(0).toUpperCase() + part.slice(1);
})
.join(" ");
}
export function parseCursorAgentModels(text: string): string[] {
const match = text.match(/Available models:\s*([^\n]+)/);
if (!match) return [];
const seen = new Set<string>();
const out: string[] = [];
for (const raw of match[1].split(",")) {
const id = raw.trim();
if (!id || seen.has(id)) continue;
seen.add(id);
out.push(id);
}
return out;
}
export type CursorAgentModelEntry = {
id: string;
name: string;
owned_by: "cursor";
};
export async function fetchCursorAgentModels(
options: { binary?: string; timeoutMs?: number } = {}
): Promise<CursorAgentModelEntry[]> {
const binary = options.binary || resolveCursorAgentBinary();
const timeoutMs = options.timeoutMs ?? 5000;
if (!binary) {
throw new Error(
"cursor-agent binary not found. Install it (curl https://cursor.com/install -fsS | bash) so ~/.local/bin/cursor-agent exists, or pass a binary path explicitly."
);
}
// cursor-agent prints "Available models: ..." to stderr and exits non-zero
// when given an unknown model id, so we intentionally pass `--help` as the
// model value to coerce it into listing.
let result: { stdout: string; stderr: string };
try {
result = await runCursorAgent(binary, ["--model", "--help"], timeoutMs);
} catch (err: unknown) {
const e = err as NodeJS.ErrnoException;
if (e?.code === "ENOENT") {
throw new Error(`cursor-agent binary not executable at ${binary}`);
}
throw err;
}
const combined = `${result.stdout}\n${result.stderr}`;
const ids = parseCursorAgentModels(combined);
if (ids.length === 0) {
throw new Error("cursor-agent did not return an 'Available models:' line");
}
return ids.map((id) => ({
id,
name: humanizeCursorModelId(id),
owned_by: "cursor" as const,
}));
}
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