LLM APIs for AI agents, paid per call
Paid APIs for language-model calls: chat, completion, summarising and similar, that an AI agent can call and pay for on the spot with x402, in USDC. We list 422, from 255 sellers. 386 are live and asking for payment correctly, and 148 delivered when we bought from them with real money. The typical price is $0.01 a call (half ask between $0.003 and $0.02).
The APIs
The first 30, in the same order as our search (GET /v1/discover?category=compute.llm, testnets left out): verified first, then probe score, then price.
Nobody can pay for a place here. Each name opens the full record: every check, every purchase, with dates.
| API | price | status | when we bought |
|---|---|---|---|
| RedRobotRouges IA Inferencefree sampleredrobotrouges.ca | $0.001 | verified | bought, delivered 2026-10-05 |
| Deep research report (AgentPay)free sampleagentpay.help | $0.25 | verified | probes pass; not bought yet |
| quartermaster.surewhynot.app/v1/random | $0.001 | verified | bought, delivered 2026-09-08 |
| keyronne.com/api/validate-json | $0.001 | verified | bought, did not deliver |
| machineobserver.com/api/x402/history | $0.001 | verified | bought, delivered 2026-09-08 |
| promptqualityscore.com/api/pqs-grade | $0.001 | verified | probes pass; not bought yet |
| netintel.dev/text/stats | $0.001 | verified | bought, delivered 2026-10-06 |
| Forest Agent Tools: /json/diffhttp--forest-gas-station-mainnet--lcjl27p8lmjs.code.run | $0.001 | verified | probes pass; not bought yet |
| Forest Agent Tools: /json/queryhttp--forest-gas-station-mainnet--lcjl27p8lmjs.code.run | $0.001 | verified | bought, delivered 2026-10-30 |
| freetier-agent-api.pages.dev/api/free-tiers | $0.001 | verified | bought, delivered 2026-11-01 |
| golf-evm-math.x402-evm-math.workers.dev/v1/chat/completions | $0.001 | verified | bought, delivered 2026-11-01 |
| netintel.dev/text/chunk | $0.001 | verified | probes pass; not bought yet |
| Linkrra Synap: LLM chat completions (OpenAI-compatible), pay per callpool.linkrra.com | $0.001 | verified | bought, delivered 2026-11-01 |
| tienda.textokit.store/api/comparar-textos | $0.001 | verified | bought, delivered 2026-11-01 |
| rooms.aurmada.com/x402/v1/read/urls | $0.0015 | verified | bought, delivered 2026-11-01 |
| minifetch.com/api/v1/x402/extract/url-content | $0.002 | verified | bought, delivered 2026-09-09 |
| netintel.dev/sentiment/analyze | $0.002 | verified | probes pass; not bought yet |
| scrapecheck.fly.dev/verify-xml | $0.002 | verified | bought, delivered 2026-10-11 |
| d1zz2d7coymbr5.cloudfront.net/v1/chat/completions | $0.002 | verified | probes pass; not bought yet |
| x402.telnyx.com/v1/chat/completions/_t/gemma-2b | $0.002 | verified | bought, delivered 2026-10-06 |
| api.sitecheck-api.workers.dev/api/read | $0.002 | verified | bought, delivered 2026-10-11 |
| x402-agent-api.onrender.com/api/v1/scrape-markdown | $0.002 | verified | bought, delivered 2026-10-11 |
| gigsai.xyz/v1/chat/completions | $0.002 | verified | bought, delivered 2026-10-11 |
| x402-data-api.sigrunner.workers.dev/ai/ask | $0.002 | verified | bought, delivered 2026-11-01 |
| api.youraitools.co/webread/v1/read | $0.002 | verified | bought, delivered 2026-11-01 |
| api.glianalabs.com/x402/chat/completions | $0.002 | verified | probes pass; not bought yet |
| api.sitecheck-api.workers.dev/api/json/repair | $0.002 | verified | bought, delivered 2026-11-01 |
| api.companyrecords-api.workers.dev/api/gov/fueleconomy-gov | $0.002 | verified | bought, delivered 2026-11-01 |
| twin.unykorn.org/v1/chat/completions | $0.002 | verified | bought, delivered 2026-11-01 |
| agent-data-tools.revmesh2074.workers.dev/extract | $0.002 | verified | bought, delivered 2026-11-01 |
All of them, as data: api.nohumans.directory/v1/discover?category=compute.llm&limit=50. Live figures, as of 2026-11-07 02:39 UTC.
For agents
Search this kind of API from your agent, free, no key. MCP server https://api.nohumans.directory/mcp, tool
find_paid_service with {"category": "compute.llm", "query": "what you need"}, or REST:
GET https://api.nohumans.directory/v1/discover?category=compute.llm&q=<what you need>
Before paying any endpoint, check its record: how, and when not to pay.
Sell one
255 sellers already list LLM APIs here, at a typical $0.01 a call. Agents choose on evidence: a free sample, inputs they can read, and a purchase that delivered. Check yours free and list it · what x402 APIs charge and earn · build one with one prompt.
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Figures count active listings on mainnet, tunnels and testnets excluded; prices are the live payment requests of verified listings on Base. Records are dated evidence about how an endpoint behaved, not a guarantee. How we check.