Submit AI inference to XFuel, pay per task (USDC via x402 or TFUEL), fetch/verify ZK proofs.
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
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Manual Client & Custom JSON ConfigExpand JSON ▾
Client Config & Setup
Choose your client or environment
Target File:
💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Documentation Overview
Chit402
Chit402 is the book. This agent spent Y on this job. You hold hub, model, and amount.
POST /v1/chat/completions returns a signed receipt: hub, model, amount, verify_url. Cost-plus, quoted, receipted — pay USDC on Base or Solana. GET|POST /v1/agents/:agent_id/book is possession-gated last-N collected spend. Signed receipt is table stakes (HMAC); SP1 settlement proof is on demand. The product is the collected row — sidecar + ingest if you already pay a provider; without a collected USDC payment.ref the receipt is client-attested only. Register is fail-closed: a collected HMAC-valid receipt plus an AAWP official or smart-account agentWallet.
To learn more about the protocol design, read the whitepaper. For live endpoints and what is real vs mock today, see runtime state. Full documentation hub: docs/.
Live app: https://chit402.com
Public API: https://api.chit402.com
Table of Contents
Setup
Prerequisites
Install Node.js 20+ and npm 10+. A Rust toolchain is required if you build CosmWasm, SP1, or zkLLM crates.
Build and test
Clone the repository, install dependencies, compile contracts, and run the test suite:
Agent gateway
The agent-facing API (settlement, payments, proving, receipts) runs from services/gateway:
The gateway listens on http://localhost:3002 by default. Env examples live under services/gateway/. Production layout is documented in runtime state.
Website
Try the paid door
No account. No API key. A wallet that can pay the 402 is enough. Register is only to hold the book after a collected receipt.
Unauthenticated /v1 returns HTTP 402 with payment requirements (USDC on Base or Solana). The receipt prices the next call. Working copy: docs/DESIGN_PARTNER_ONBOARDING.md.
flagship-demo.ts is the paid /task-request path (402 without a payer). Do not start there.
- TypeScript SDK — packages/sdk
- MCP server — packages/mcp
- Agent playbook — packages/agent-skills
Windows note: if you use raw HTTP, call curl.exe — PowerShell’s curl is not real curl.
API reference: M2M API · Chat completions: docs here · Payments: x402 adapter.
Documentation
| Doc | Description |
|---|---|
| WHITEPAPER.md | Protocol design |
| docs/README.md | Documentation hub |
| docs/RUNTIME_STATE.md | As-deployed state |
| docs/POSITIONING.md | Messaging |
| docs/DEPLOYMENT.md | Deployment |
| docs/TESTING.md | Tests |
| AGENTS.md | Agent / LLM index |
| CONTRIBUTING.md | Contributing |
Security
Responsible disclosure (safe harbour; no cash bounty until the first audit): docs/bug-bounty.md.
Reporting policy: SECURITY.md.
Apache-2.0 — see LICENSE.
Related MCP Servers
Adoption & maintenance
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1
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npm downloads
1.8M
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Last commit
2d ago
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Frequently Asked Questions about XFuel
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CategoryFinance & Fintech
6/7 checks healthy over the last 45d
45Quality signal: Fair · 45/100How this signal is calculated ▾
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Scanned 5d ago via OSV.dev · hardhat (npm)
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