402 Index
The paid API directory for AI agents — indexed, verified, and searchable
Ecosystem Overview
135,086
Endpoints Indexed
56,551
Payment-Verified
4,286
Providers Indexed
2,613
Providers Verified
L402 Lightning Network
Verified167 / 1,965 (8%)
Providers23 / 86 (27%)
Healthy167
Decentralized, censorship-resistant, locally verifiable
x402 Base, Solana, etc.
Verified55724 / 131,617 (42%)
Providers2554 / 4147 (62%)
Healthy56629
Centralized facilitator required (4+ available), Base/Solana chains
MPP Stripe / Tempo
Verified660 / 1,504 (44%)
Verified (gateway-backed)102 / 288 (35%)
Providers62 / 107 (58%)
Healthy660
Stripe/Tempo facilitated, session-based settlement
Agent Discovery
Search the directory like an AI agent would through the MCP server
MCP Tool Call
{
"tool": "search_services",
"arguments": {}
}
Start typing or adjust filters to search...
Live Endpoint Health Check
Paste any API URL to run a real-time health check — see the protocol handshake live
Payment Flow
How an agent pays for an API call — step by step
1
Agent Sends Request
Agent discovers endpoint via 402index and sends request
GET https://parsebit-lnd.fly.dev/extract/data
2
Server Returns 402
Server requires payment — returns 402 with payment instructions
WWW-Authenticate: L402 macaroon="AGIAJEem...", invoice="lnbc200n1..."
3
Agent Pays Invoice
Agent pays Lightning invoice automatically via lnget or wallet
Lightning BOLT11 invoice Amount: 200 sats Expiry: 60 seconds
4
Agent Retries with Token
Agent retries request with proof of payment
Authorization: L402 <macaroon>:<preimage>
5
Server Returns 200
Server validates payment and returns the requested data
HTTP/1.1 200 OK
Content-Type: application/json
{ "data": "..." }