# Where to list an x402 API, MCP server or agent skill

Edition 2026-10-25-2 (generated 2026-10-25). Free index: name, what the place lists, section, our status, last check.
The step-by-step recipes (how to submit, how to verify you are listed) are the paid part, sold over x402: $0.01 per record or $0.99 for the whole edition.

## 1. Checked, free to list, working (50)

We listed our own services here, or submitted and are waiting. Free, and it works.

- [CDP Bazaar (Coinbase) + Agentic.Market](https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources) — x402 APIs; checked 2026-10-23
- [x402scan](https://www.x402scan.com) — x402 APIs; checked 2026-10-23
- [Official MCP Registry](https://registry.modelcontextprotocol.io) — MCP servers; checked 2026-10-23
- [Gold-402 (24klabs.ai)](https://24klabs.ai/directory) — x402 APIs; checked 2026-10-23
- [402radar](https://402radar.io) — x402 APIs; checked 2026-10-25
- [agent-control.net](https://agent-control.net) — Agents; checked 2026-10-23
- [agent402.tools](https://agent402.tools) — x402 APIs; checked 2026-10-23
- [agentfirst.directory](https://agentfirst.directory) — AI tools; checked 2026-10-23
- [agenticskills.io](https://agenticskills.io) — Skills, MCP servers; checked 2026-10-25
- [Agent Nexus](https://agentnexus.app) — APIs, MCP servers, Agents; checked 2026-10-23
- [agentshare.dev](https://agentshare.dev) — MCP servers; checked 2026-10-23
- [agentskills.in](https://agentskills.in) — Skills; checked 2026-10-23
- [agentskillshub.dev](https://agentskillshub.dev) — MCP servers, Skills; checked 2026-10-23
- [AI Agents Listing](https://aiagentslisting.com) — Agents, MCP servers, Skills; checked 2026-10-23
- [AlternativeTo](https://alternativeto.net) — AI tools; checked 2026-10-23
- [apis.io](https://apis.io) — APIs, MCP servers, Skills, Agents; checked 2026-10-25
- [awesomeagentskills.dev](https://awesomeagentskills.dev) — Skills; checked 2026-10-23
- [Best-AI.org](https://best-ai.org) — AI tools; checked 2026-10-23
- [bestmcptools.org](https://bestmcptools.org) — MCP servers; checked 2026-10-25
- [Bro Find AI](https://brofindai.com) — AI tools; checked 2026-10-23
- [Claude Rules](https://clauderules.net) — MCP servers; checked 2026-10-23
- [Circle Agent Marketplace](https://developers.circle.com) — x402 APIs; checked 2026-10-23
- [DevHunt](https://devhunt.org) — AI tools; checked 2026-10-23
- [fiatdock](https://fiatdock.com) — MCP servers; checked 2026-10-23
- [FutureTools](https://www.futuretools.io) — AI tools; checked 2026-10-23
- [Glama](https://glama.ai) — MCP servers; checked 2026-10-23
- [percall AI Product Index](https://index.percall.dev) — AI tools, APIs; checked 2026-10-23
- [Insidr](https://www.insidr.ai/) — AI tools; checked 2026-10-23
- [LaunchingNext](https://www.launchingnext.com) — AI tools; checked 2026-10-23
- [Market402](https://market402.com) — x402 APIs; checked 2026-10-23
- [MCP Marketplace](https://mcp-hub-registry.vercel.app) — MCP servers; checked 2026-10-23
- [mcp.directory](https://mcp.directory) — MCP servers, Skills; checked 2026-10-23
- [mcpcatalog.dev](https://mcpcatalog.dev) — MCP servers; checked 2026-10-25
- [mcpHQ](https://mcphq.org) — MCP servers; checked 2026-10-23
- [mcpmarket.com](https://mcpmarket.com) — MCP servers, Skills; checked 2026-10-25
- [mcpserver.cc](https://mcpserver.cc) — MCP servers; checked 2026-10-23
- [MCP Server Hub](https://mcpserverhub.net) — MCP servers; checked 2026-10-23
- [mcpservers.org](https://mcpservers.org) — MCP servers; checked 2026-10-23
- [mcpserverspot](https://www.mcpserverspot.com) — MCP servers; checked 2026-10-23
- [Not Human Search](https://nothumansearch.ai) — AI tools, APIs, Agents; checked 2026-10-23
- [PayAPI](https://payapi.market) — x402 APIs, APIs; checked 2026-10-23
- [payforapi.com](https://payforapi.com) — x402 APIs, APIs; checked 2026-10-23
- [Muse (Meta)](https://platform.muse.ai/) — MCP servers; checked 2026-10-23
- [Sentinel](https://sentinel.rootstuff.io/agents/directory) — x402 APIs, Agents; checked 2026-10-23
- [Smithery](https://smithery.ai) — MCP servers; checked 2026-10-23
- [the402.dev](https://the402.dev) — x402 APIs; checked 2026-10-25
- [The Rundown SuperTools](https://www.therundown.ai/) — AI tools; checked 2026-10-23
- [ToolSDK MCP Registry](https://toolsdk.ai) — MCP servers; checked 2026-10-23
- [whatagentsbuy](https://whatagentsbuy.com) — x402 APIs; checked 2026-10-23
- [x402-list.com](https://x402-list.com) — x402 APIs; checked 2026-10-23

## 2. Paid listings — not tested by us (8)

These charge for a listing. We did not pay, so we have not tested them.

- [agent-skills.market](https://agent-skills.market) — Skills; checked 2026-10-23
- [eliteai.tools](https://eliteai.tools) — AI tools; checked 2026-10-23
- [Futurepedia](https://www.futurepedia.io) — AI tools; checked 2026-10-23
- [mcp.so](https://mcp.so) — MCP servers; checked 2026-10-23
- [Ontario Protocol](https://ontarioprotocol.com) — x402 APIs; checked 2026-10-23
- [satring.com](https://satring.com) — APIs; checked 2026-10-23
- [There's An AI For That (TAAFT)](https://theresanaiforthat.com) — AI tools; checked 2026-10-23
- [Toolify](https://www.toolify.ai) — AI tools; checked 2026-10-23

## 3. Listed only in exchange for a backlink (2)

Free only if your own site links back to them.

- [AI Agents Directory](https://aiagentsdirectory.com) — Agents; checked 2026-10-23
- [Dang.ai](https://dang.ai) — AI tools; checked 2026-10-23

## 4. Lists you by itself — nothing to submit (15)

They copy from a registry. Get into the registry and you appear here.

- [402index.io](https://402index.io) — x402 APIs; checked 2026-10-23
- [agent-tools.cloud](https://agent-tools.cloud) — x402 APIs, MCP servers, Agents; checked 2026-10-23
- [allmcps.com](https://allmcps.com) — MCP servers; checked 2026-10-23
- [SarnAI](https://board.sarnai.dev) — x402 APIs, MCP servers, Agents; checked 2026-10-23
- [x402 Endpoint](https://endpoint.x402jp.com) — x402 APIs; checked 2026-10-23
- [mcpfinder](https://mcpfinder.dev) — MCP servers; checked 2026-10-23
- [mcpindex.ai](https://mcpindex.ai) — MCP servers; checked 2026-10-23
- [mcprating](https://mcprating.io) — MCP servers; checked 2026-10-23
- [neuronto.com](https://neuronto.com) — MCP servers, x402 APIs, APIs; checked 2026-10-23
- [nohumans.directory](https://nohumans.directory) — x402 APIs; checked 2026-10-23
- [percall.dev x402 index](https://percall.dev) — x402 APIs; checked 2026-10-23
- [protogrid](https://protogrid.dev) — MCP servers; checked 2026-10-23
- [settled.tools](https://settled.tools) — x402 APIs; checked 2026-10-23
- [x402-trust](https://x402-trust.com) — x402 APIs; checked 2026-10-23
- [YourAITools](https://youraitools.co) — AI tools, x402 APIs; checked 2026-10-23

## 5. Broken or not worth the time (18)

Dead, broken, or an intermediary that keeps a cut. Skip them.

- [agensi.io](https://agensi.io) — Skills; checked 2026-10-23
- [FluxA AgentMarket](https://agentmarket.fluxapay.xyz) — x402 APIs, APIs; checked 2026-10-23
- [agentoolrank](https://agentoolrank.com) — AI tools, MCP servers; checked 2026-10-23
- [agentskillhub.dev](https://agentskillhub.dev) — Skills; checked 2026-10-23
- [apibase.pro](https://apibase.pro) — APIs; checked 2026-10-23
- [APIs.guru](https://apis.guru) — APIs; checked 2026-10-23
- [bestofai.io](https://bestofai.io) — AI tools; checked 2026-10-25
- [bountyapi.com](https://bountyapi.com) — APIs; checked 2026-10-23
- [claudemarketplaces.com](https://claudemarketplaces.com) — Skills, MCP servers; checked 2026-10-23
- [entroute](https://entroute.com) — x402 APIs, APIs; checked 2026-10-23
- [every-ai.com](https://every-ai.com) — AI tools; checked 2026-10-23
- [mcpize](https://mcpize.com) — MCP servers; checked 2026-10-23
- [mpp.best](https://mpp.best) — x402 APIs, APIs; checked 2026-10-23
- [MPPScan / mpp.dev](https://mpp.dev) — APIs; checked 2026-10-23
- [SkillsMP](https://skillsmp.com) — Skills; checked 2026-10-23
- [x402bazaar.org](https://x402bazaar.org) — x402 APIs; checked 2026-10-23
- [XRPL AI Hub](https://xrpl-ai.org) — Agents; checked 2026-10-23
- [zero.xyz](https://zero.xyz) — APIs; checked 2026-10-23

## How to buy the recipes

- Per record: POST https://api.aiskills402.com/v1/places/next with a JSON body such as {"n":5} (5 to 50 records, $0.01 each). The first answer is 402 with the exact count and price; sign it with an x402 client (USDC on Base) and repeat the same request. The reply carries next_cursor: send it as "after" for the next records, never the same ones twice.
- The whole edition: GET https://api.aiskills402.com/v1/places/all for $0.99. The reply carries every record and a personal token; GET https://api.aiskills402.com/v1/places/grants/<token> returns the newest edition for 30 days, then the edition you bought, forever (add ?format=md for Markdown).
- Only what changed: send "since" with the edition you already have, and pay only for the records added or changed after it.

Machine-readable: https://api.aiskills402.com/v1/places (JSON).