Base Mainnet (8453) • Node Online

Sovereign Machine-to-Machine
Compute Layer on Base

Autonomous agent API powered by x402 exact USDC settlement. Zero credit cards. Real-time signed Base DeFi oracles, Merkle inclusion proofs, and cryptographic attestations.

Try Live API Playground Inspect llms.txt OpenAPI 3.1

x402 Conformance Linter on npm

OPEN SOURCE • MIT

Zero-dependency CLI that runs 12 checks (402 challenge, accepts[], EIP-712 domain, forged/expired/underpaid EIP-3009 rejection) against any x402 endpoint. Exit code 0 means conformant, so it drops straight into CI.

npx @celorodrigues/x402-conformance https://your-service.com/v1/paid

View on npm ↗ Use it as an MCP server Run it via the API (free)

Official Smithery.ai MCP Registry

QUALITY SCORE 78/100 • VERIFIED

Production MCP Server indexed on Smithery.ai with 14 active tools. Native integration with Claude Desktop, Cursor, and autonomous agent frameworks over Streamable HTTP (/mcp).

npx -y @smithery/cli install @baiano-marcelo-eduardo/automaton-x402 --client claude

View on Smithery.ai ↗ View Dynamic Pricing Manifest 24/7 Cloud Node Health ↗

Status & Latency

Connecting...

On-Chain Treasury

0.0000 USDC

Settlement PayTo

0x71DEAc0...5EE528 ↗

Cloud Deployment

24/7 VPS Docker

x402 Pricing Model

0.001 - 0.05 USDC

Free Daily Quota

3 Calls / IP

Interactive API Playground

FREE EVALUATION

Execute live cryptographic and DeFi endpoints directly from your browser.

Ready • 0ms

// Select an endpoint and click Send Request...

Proof-of-Existence Ledger

SHA-256 CHAIN

Append-only hash-chained ledger signed by the agent's sovereign key.

Loading blocks from agent node...

All blocks independently verifiable off-chain

Discovery Protocols & Machine Standards

Standardized machine-readable endpoints for AI agents, crawlers, and Web3 aggregators.

llms.txt Directory

Curated documentation index for LLMs and autonomous agents.

GET /llms.txt

ERC-8004 Agent Card

On-chain identity manifest, verified capabilities, and key registration.

GET /.well-known/agent-card.json

x402 Machine Bazaar

Machine-to-machine pricing manifest with exact settlement specs.

GET /.well-known/x402-bazaar.json

OpenAPI 3.1 Spec

Complete interactive REST schema ready for Swagger, Postman, and IDEs.

GET /openapi.json

Honeypot & Token Safety (0.002 USDC)

Bytecode analyzer: selfdestruct, mint traps, tax traps and signed verdict.

GET /v2/security/scan

x402 Conformance Verdict

FREE. Conformance verdict for any x402 service, the same checks as the npm linter.

GET /v1/x402-conformance?url=

x402 Service Directory

FREE. Live directory of x402 / payment services from the public MCP registry.

GET /v1/x402-directory

MCP AI Integration

Plug the x402 linter and this node's tools (token security scan, signed oracle, attestations, Merkle proofs) into any MCP client. No clone, no install: npx runs it on demand.

Claude Desktop

STDIO

Settings → Developer → Edit Config opens claude_desktop_config.json. Add the server, then restart Claude Desktop:

{ "mcpServers": { "automaton-x402": { "command": "npx", "args": ["-y", "@celorodrigues/x402-conformance", "--mcp"] } } }

Cursor

STDIO

Create .cursor/mcp.json in your project (or ~/.cursor/mcp.json for all projects), then enable it under Settings → MCP:

{ "mcpServers": { "automaton-x402": { "command": "npx", "args": ["-y", "@celorodrigues/x402-conformance", "--mcp"] } } }

Tools exposed

x402_conformance_check FREE. Runs the full linter locally against any x402 endpoint.
security_scan Base token honeypot, mint-trap and contract risk analysis (0.001 USDC, 3 free calls/day).
oracle_base, sentiment_analysis, attest, merkle_prove Paid compute with signed results.
verify_attestation, read_ledger, merkle_verify, pricing, health Free.

Optional env: VALUE_API_BASE (defaults to https://api.automaton-sovereign.workers.dev) and VALUE_API_PAYMENT (a payment tx hash attached to paid calls).

Free x402 Conformance Badge

FREE

Live SVG badge for any x402 service, re-checked on every request.

[![x402](https://api.automaton-sovereign.workers.dev/badge.svg?url=https://YOUR-SERVICE)](https://YOUR-SERVICE)

Gas-free USDC Checkout (EIP-3009)

0 ETH NEEDED

Your buyer holds USDC but zero ETH, and can still pay you. The payer signs offline and a facilitator relays the transfer and pays the gas. Proven on Base mainnet with a wallet holding 0 ETH.

GET /v1/gasfree-quote?amount=0.001 The exact payload a buyer signs.
GET /v1/gasfree-verify?tx=0x..&to=0x.. Independent on-chain check.
GET /v1/gasfree-module The client library, one file.

Sovereign Machine-to-MachineCompute Layer on Base

Discovery Protocols & Machine Standards

MCP AI Integration

x402 Fix List

Sovereign Machine-to-Machine
Compute Layer on Base