AIPayGenBot
Saw AIPayGenBot in your logs? Your API, MCP server or site is probably listed in the AIPayGen marketplace, where AI agents look for tools to use. The bot checks that listings still work, so agents aren't sent to dead ones.
What it does
| Request | Why | How often |
|---|---|---|
MCP servers: one tools/list call | Confirms the server answers and has tools | About once a week per listing |
| x402 endpoints: one unpaid request | Reads your 402 price quote so agents see the right price. It never pays and never sends a payment. | About once a week per listing |
| Other APIs: one request to the listed URL | Checks that something answers there | About once a week per listing |
Agent cards (/.well-known/agent-card.json) | Keeps registered agents' listings up to date | About once a day, only for agents that registered |
| A page on your site | Only when an AIPayGen user asks about it (for example the AI crawler check) | Once per request, cached |
It sends no credentials and no personal data, and a timeout of a few seconds keeps each check light. After three failed checks in a row, a listing is hidden from search until it answers again.
Full user agent: AIPayGenBot/2.1 (+https://aipaygen.com/bot). It runs on Cloudflare Workers, so requests come from Cloudflare's shared addresses rather than a fixed IP list.
If you run the API that was checked
Agents found your listing here. You can make more of that:
- Get paid per call. Put your API behind the AIPayGen gateway and agents pay you per request in USDC over x402, straight to your wallet, with no accounts or API keys to hand out. How it works.
- See how agents find you. Search the marketplace for your API's name to see your listing, its health and its price.
- Show it's listed. Every listing page has a badge for your README with live health from these checks, so agents and developers can find you.
- Charge AI crawlers. If AI crawlers read your docs or pages, pay-per-crawl answers them with a price instead of a free page. You can also verify a bot from your logs.
Stop the checks or remove a listing
Open an issue at github.com/Damien829/aipaygen/issues with the URL, and we'll remove the listing and stop checking it. Listings come from public sources (the official MCP Registry and x402 discovery feeds) or from their owners.