Yieldagentx402

Public client libraries and integrations for YieldAgentX402 — the custody-free, policy-gated, receipt-backed execution layer for AI agents.

Platform · MCP Docs · Try without signup · Get API key

yieldagentx402-sdks MCP server

This repo hosts the open-source distribution packages. The platform itself (gateway, ShadeGuard policy engine, TEE attestation, orchestrator, Filecoin/BTFS anchoring) lives in a separate private repository — we ship the bits agents need to use the platform here.

Packages in this repo

Try without signup

curl -X POST https://api.yieldagentx402.app/mcp \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call",
       "params":{"name":"yax_get_capabilities","arguments":{}}}'

No API key required. Returns all 18 tools, 18 chains, rate limits, fees, supported runtime configs.

Want an instant test key?

curl -X POST https://api.yieldagentx402.app/api/apply \
  -H "Content-Type: application/json" \
  -d '{"agent_name":"my-agent"}'

Returns a yax_test_* key (5 USD cap, 7-day expiry) for safe read-only tools.

What is YieldAgentX402?

A trust layer for agents that move money.

• 18 MCP tools — discovery, secure workflow execution, x402 payment settlement, policy dry-run, approvals, receipt verification, attestation, finance/CRM skill tools
• 18 chains — Base, Ethereum, Bitcoin (native), Starknet, NEAR, Solana, Stacks, BNB, Rootstock, Filecoin EVM + native, Aptos, Sui, TON, Tron, XRPL, Stellar, Algorand
• Custody-free wallet — one NEAR MPC key authority derives EVM + BTC addresses on demand. No private keys held by the gateway or worker. Starknet uses Stark curve preset.
• Intel TDX TEE attestation — mrEnclave verifiable at /api/tee/report
• HMAC-SHA256 receipts — every call returns a signed receipt
• Filecoin + BTFS dual anchoring — permanent tamper-proof proof storage
• x402 protocol settlement — 0.25% protocol fee, machine-verifiable in /.well-known/x402 as extra.protocolFeeBps: 25

Custody-free wallet — one MPC key, three chains

Live manifest: https://shade-agent-worker.cryptoblac.workers.dev/api/wallet

Live infra

Contributing

Issues and PRs on the public SDK packages are welcome here. Platform-level changes (gateway, policy engine, TEE worker) happen in a private repo — open an issue if you have a feature request and we'll triage.

License

MIT — see LICENSE.