Public discovery kit for the 400860 x402 API catalog.
400860 exposes quote-first x402 paid API tools for AI-agent payment safety, seller checkout repair, spend control, market intelligence, and paid MCP launch readiness.
- API base: https://api.400860.xyz/
- OpenAPI: https://api.400860.xyz/openapi.json
- x402 manifest: https://api.400860.xyz/.well-known/x402
- llms.txt: https://api.400860.xyz/llms.txt
- llms-full.txt: https://api.400860.xyz/llms-full.txt
- Buyer guide: https://api.400860.xyz/buyer-guide.json
- APIs.json: https://api.400860.xyz/apis.json
- Agent card: https://api.400860.xyz/.well-known/agent-card.json
- AI catalog: https://api.400860.xyz/.well-known/ai-catalog.json
- MCP discovery card: https://api.400860.xyz/.well-known/mcp/server-card.json
- Directory submission pack: https://api.400860.xyz/directory-submission.json
- Promotion channels: https://api.400860.xyz/promotion-channels.json
| Tool | Route | Purpose | Price |
|---|---|---|---|
| Agent Security Policy Pack | /v1/agent/security-policy-pack |
Compile default-deny controls before an AI/MCP agent can call tools, browse, handle secrets, or spend. | $0.01 |
| Agent Spend Firewall Pack | /v1/agent/spend-firewall-pack |
Check whether a funded wallet or agent should approve a paid call. | $0.01 |
| Seller Checkout Repair Pack | /v1/x402/seller/checkout-repair-pack |
Diagnose why x402 visibility, quotes, or probes do not convert into paid settlements. | $0.01 |
| x402 Market Intel | /v1/x402/market/intel |
Find scarce x402 buyer/seller opportunities beyond generic protocol demos. | $0.01 |
| Paid MCP Launch Pack | /v1/mcp/paid-launch-pack |
Package paid MCP services for first purchase, install snippets, and directory readiness. | $0.01 |
curl -i https://api.400860.xyz/v1/agent/security-policy-pack
curl -s https://api.400860.xyz/.well-known/x402 | jq .
curl -s https://api.400860.xyz/openapi.json | jq '.info, (.paths | keys | length)'
curl -s https://api.400860.xyz/llms-full.txt | head -80- Inspect the route and 402 quote.
- Sign locally with your own x402-capable buyer runtime.
- Send the payment header to the paid route.
- Verify the paid response and receipt locally.
Do not upload a private key to 400860. The API is intended for local signing by the buyer.
The files in directory/ contain copy/paste listing material for x402, API, agent, and MCP-adjacent directories. 400860 is REST/x402-first with MCP-lite discovery cards. Do not list it as an official MCP registry package unless a directory accepts discovery-card or REST/x402 services.
- x402scan registered the API origin and discovered 37 resources.
- agent-tools.cloud indexes the x402 service and A2A/agent-card metadata.
- x402-list, CLIRank, PublicAPI, AI Agent Tools, MadeWithStack, AI Agents List, AI Agents Gathering, AI Bazaar, LLMS Indexer, and A2A Registry have received submissions or public API registrations.
- GitHub directory PRs/issues include awesome agentic payments, agent payment protocols, public OpenAPI endpoints, llms.txt indexes, x402/agent-commerce lists, gold-402, and Awesome Agent Economy.
- Attempted channels that were not confirmed are tracked separately when a form returned an internal error, required CAPTCHA/security verification, had no public submission endpoint, or timed out before a stable form loaded.
Accuracy note: A2A Registry can discover the agent card, but the live 400860 surface is still REST/x402-first. Do not describe 400860 as a healthy A2A message runtime or official MCP Registry package until a tested runtime/package wrapper is published.
Directory submissions, crawls, probes, IndexNow pings, self-tests, and Basic Auth dashboard views are not external revenue. 400860 should only claim external revenue when a non-self buyer completes a paid protected-handler event.
This repository does not claim traffic volume, settlement volume, external revenue, votes, stars, reviews, or endorsements.