# enclave402

> Pay-per-call APIs for autonomous agents: live Polymarket signals, IPFS pinning, and EIP-712 attestations. USDC on Base via x402 v2. Failed calls are never charged.

## Machine Discovery & Interfaces
- [MCP server](https://enclave402.com/mcp): streamable-HTTP MCP transport; paid tool calls carry x402 in _meta (@x402/mcp). Manifest at /mcp.json.
- [OpenAPI 3.1](https://enclave402.com/openapi.json): strict JSON Schema 2020-12 with x-bazaar cost blocks and 402 responses.
- [x402 manifest](https://enclave402.com/.well-known/x402): network, asset, payTo, facilitator, attestor, and route price map.
- [Discovery catalog](https://enclave402.com/api/discovery): Bazaar-shaped route catalog (accepts[], schemas).
- [Full documentation](https://enclave402.com/llms-full.txt): protocol flow, error envelopes, security guarantees.
- [Transparency](https://enclave402.com/transparency): settlement policy, data retention, rate limits, attestor address, uptime.
- [security.txt](https://enclave402.com/.well-known/security.txt): vulnerability disclosure contact (RFC 9116).
- [Settlement ledger](https://enclave402.com/api/ledger): settled calls, unique payers (30d), self-dealing share, recent transactions with explorer links.
- [Error catalog](https://enclave402.com/errors): every RFC 9457 problem type with the one corrective action; failed calls are never charged.

## Registry Listings
- [MCP Registry](https://registry.modelcontextprotocol.io/v0/servers?search=com.enclave402/enclave402)
- [Smithery](https://smithery.ai/servers/yourstruly-oliver/enclave402)
- [Glama](https://glama.ai/mcp/connectors/com.enclave402/enclave402)
- [x402scan](https://www.x402scan.com/server/919931b2-72fa-445c-a708-bdbdd203d24e)

## Paid Endpoints
- [GET /api/market/signal](https://enclave402.com/api/market/signal): $0.010 USDC. Polymarket signal with derived edge: 1h/6h probability deltas, realized volatility and whale flow from the trade tape.
- [POST /api/storage/pin](https://enclave402.com/api/storage/pin): $0.008 USDC. Store a JSON document on IPFS via a managed pinning service; returns its CID and a gateway URL.
- [POST /api/agent/attest](https://enclave402.com/api/agent/attest): $0.040 USDC. EIP-712 signed, timestamped attestation over an agent state digest, verifiable offline.
- [GET /api/seller/vet](https://enclave402.com/api/seller/vet): $0.010 USDC. Scored, signed verdict on any x402 seller: challenge shape, Bazaar usage, trust surfaces.
- [GET /api/market/verdict](https://enclave402.com/api/market/verdict): $0.020 USDC. Attested, rule-based verdict on one Polymarket market: lean, confidence, reasons, signed before resolution.

## Settlement Protocol
- Network: eip155:8453 (chainId 8453)
- Asset: USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
- Pay to: 0xbeF3e7CFd486C14dD8c3aA5911134bF361B973C5
- Scheme: exact (EIP-3009 transferWithAuthorization, EIP-712 signed), header Payment-Signature (base64 x402 v2 payload)
- Challenge: HTTP 402 + PAYMENT-REQUIRED header (base64 requirements) + RFC 7807 body with remedy
- Receipt: PAYMENT-RESPONSE header (base64 facilitator settlement: transaction, network, payer)
- Guarantee: settlement runs after the handler and is canceled on any non-2xx, so you never pay for an error
- Protection: (payer, nonce) replay ledger, one in-flight settlement per payer, network mismatch rejection, rate limits
- Free trial: X-Agent-Dry-Run: true returns a schema-shaped sample at no cost; X-Payment-Address: <wallet> grants a small free quota on read routes