Web data APIs for AI agents, paid per call
Paid APIs for pages, links, metadata and other data read from the web, that an AI agent can call and pay for on the spot with x402, in USDC. We list 854, from 443 sellers. 799 are live and asking for payment correctly, and 356 delivered when we bought from them with real money. The typical price is $0.01 a call (half ask between $0.005 and $0.02).
The APIs
The first 30, in the same order as our search (GET /v1/discover?category=data.web, 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 |
|---|---|---|---|
| AgentDiet — Semantic Web Distiller & Token De-Bloaterfree sampleagentdiet-72343955726.us-central1.run.app | $0.001 | verified | bought, delivered 2026-10-19 |
| DNS lookup (MCP): A/AAAA/MX/TXT/NS/CAA records, SPF and verification hintsfree samplenightshift-x402.nightshift-labs.workers.dev | $0.003 | verified | probes pass; not bought yet |
| Web Agent Toolkitfree sampledawn-cloud-7239.jiahongsun181.workers.dev | $0.005 | verified | probes pass; not bought yet |
| Domain age, RDAP/WHOIS and expiry (MCP): registrar, status, new-domain flagsfree samplenightshift-x402.nightshift-labs.workers.dev | $0.005 | verified | probes pass; not bought yet |
| Web page to clean Markdown (MCP): main content, title, links, metadatafree samplenightshift-x402.nightshift-labs.workers.dev | $0.005 | verified | probes pass; not bought yet |
| KGNINJA summarize-url (KG-NINJA)free sampleapi.kgninja.dev | $0.01 | verified | probes pass; not bought yet |
| Omega store - web page to clean textfree samplestore.promptdemon.app | $0.01 | verified | bought, delivered 2026-10-19 |
| x402 Web Agent - OEmbed Providerfree sampledawn-cloud-7239.jiahongsun181.workers.dev | $0.004 | verified | probes pass; not bought yet |
| Ops Control HQ Technical SEO Auditfree sampletkoqkknsezxavtxfywkm.supabase.co | $0.01 | verified | bought, delivered 2026-10-19 |
| Toolbelt402 – page metadata + SEO auditfree sampletoolbelt402.catalystdesk.workers.dev | $0.002 | verified | bought, delivered 2026-10-11 |
| Toolbelt402 – URL to clean Markdownfree sampletoolbelt402.catalystdesk.workers.dev | $0.003 | verified | bought, delivered 2026-10-15 |
| Bounty Engineer Autonomous Bounty Due Diligencefree samplebounty-engineer-x402-prod.onrender.com | $0.75 | verified | probes pass; not bought yet |
| Brand Extractorfree sampleextract.ilyyya.com | $0.001 | verified | bought, delivered 2026-10-06 |
| StallRow — Page To Markdownfree samplestall-row-production.up.railway.app | $0.01 | verified | bought, delivered 2026-11-02 |
| Bounty Engineer Bounty Intelligencefree samplebounty-engineer-x402-prod.onrender.com | $0.01 | verified | probes pass; not bought yet |
| Geo402 geo web fetch: any page from any countryfree samplegeo402.com | $0.005 | verified | bought, delivered 2026-10-27 |
| AgentDiet (agentdiet.dev) — A2A Context Window Distiller & 85% Token Dietfree sampleagentdiet.dev | $0.001 | verified | bought, delivered 2026-10-19 |
| keyronne.com/api/phone | $0.001 | verified | bought, did not deliver |
| api.reloadpi.com/api/catalog/vouchers/filters | $0.001 | verified | bought, delivered 2026-09-08 |
| mcpfax-utility.bowling-anthony.workers.dev/v1/wikipedia | $0.001 | verified | probes pass; not bought yet |
| shelf.thirdmade.net/probe/page-meta | $0.001 | verified | bought, delivered 2026-09-09 |
| x402-micro-tollgate.onrender.com/v1/fetch-md | $0.001 | verified | bought, delivered 2026-09-22 |
| contextslim.friczero.com/fetch | $0.001 | verified | bought, did not deliver |
| postcode-api-production.up.railway.app/lookup/address | $0.001 | verified | bought, delivered 2026-10-07 |
| x402.orthogonal.com/findymail/api/technologies/search | $0.001 | verified | probes pass; not bought yet |
| fetch.halowerk.com/extract | $0.001 | verified | probes pass; not bought yet |
| offercheck.offercheck.workers.dev/v1/read | $0.001 | verified | bought, delivered 2026-10-11 |
| payload402.edgebytenet.workers.dev/wiki/lookup | $0.001 | verified | bought, delivered 2026-10-11 |
| api.youraitools.co/pkgguard/v1/package | $0.001 | verified | bought, delivered 2026-11-01 |
| freetier-agent-api.pages.dev/api/agent-tools | $0.001 | verified | bought, delivered 2026-11-01 |
All of them, as data: api.nohumans.directory/v1/discover?category=data.web&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": "data.web", "query": "what you need"}, or REST:
GET https://api.nohumans.directory/v1/discover?category=data.web&q=<what you need>
Before paying any endpoint, check its record: how, and when not to pay.
Sell one
443 sellers already list Web data 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.
Other kinds of API
- Crypto data APIs
- LLM APIs
- Geolocation and maps APIs
- Market data APIs
- Image and media generation APIs
- Weather APIs
- Currency exchange rate APIs
- Developer tool APIs
- News APIs
- Stock market data APIs
- Search APIs
- Intelligence and analysis APIs
- DeFi data APIs
- Derivatives and funding rate APIs
- Validation APIs
- Macroeconomic data APIs
- Social media data APIs
- On-chain data APIs
- Verification APIs
- GitHub data APIs
- AI inference APIs
- Web scraping APIs
- Research data APIs
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.