pr402
x402 facilitator for Solana
In the AI payments ecosystem
pr402 is an early-stage Rust project in the AI payments / x402 ecosystem, focused on agentic-economy, payment, pr402, solana. It currently has 0 GitHub stars and 0 forks, and sits alongside related tools like solana-x402-payment, ag402, Agent402, x402, magpie-x402, AgentFund.
🌉 pr402: x402 Facilitator for Solana
pr402 is the REST-to-Solana gateway for the x402 agentic economy, optimized for serverless environments (Vercel). It translates simple REST API requests from off-chain agents into on-chain instructions for UniversalSettle and SLA-Escrow.
📌 Official Deployments
Integrations must use the origin configured for that environment. Confirm the cluster and capability parameters via GET /api/v1/facilitator/health on your host.
| Environment | Primary Origin (Concise) | Alternate Host (Same Service) | OpenAPI Schema |
|---|---|---|---|
| Production | https://ipay.sh |
https://agent.pay402.me |
/openapi.json |
| Preview | https://preview.ipay.sh |
https://preview.agent.pay402.me |
/openapi.json |
🛠️ API Surface Overview
All endpoints are detailed in the openapi.json schema. The primary endpoints are:
/capabilities(GET): Returns the facilitator's supported rails, networks, default oracles, and fee rates./payment-required/enrich(POST): Enriches a draft payment required body into an institutional-grade, client-ready 402 template./build-exact-payment-tx(POST): Builds an unsignedVersionedTransactionfor theexactrail./build-sla-escrow-payment-tx(POST): Builds an unsignedVersionedTransactionfor thesla-escrowrail./verify(POST): Dry-runs payment signature validation./settle(POST): Validates and broadcasts the transaction on-chain, completing settlement.
🚀 Developer Integration Paths
Detailed guides are served directly by the deployments or can be found in the workspace:
- Sellers (API Gating): Read the Start here · Sellers guide or checkout x402-seller-starter.
- Buyers (Agents): Install the client SDK (
npm i @pr402/clientorcargo install pr402-client) and refer to the Buyer Quickstart. - AI/MCP Integration: Run
npx -y @pr402/mcp-serverto connect tools directly to LLMs or Cursor.
⚙️ Environment Configuration
Deployments require the following environment variables:
| Variable | Description |
|---|---|
SOLANA_RPC_URL |
Solana RPC node provider URL. |
SOLANA_CHAIN_ID |
CAIP-2 chain identifier. |
FEE_PAYER_PRIVATE_KEY |
Base58 private key of the facilitator (pays gas for JIT vaults and sweeps). |
UNIVERSALSETTLE_PROGRAM_ID |
Program ID of the UniversalSettle program. |
ESCROW_PROGRAM_ID |
Program ID of the SLA-Escrow program. |
ORACLE_AUTHORITIES |
Comma-separated list of trusted oracle public keys. |
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