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Robotshop Proof of Autonomous Existence Certificate
x402
Robotshop Proof of Autonomous Existence Certificate is a paid API for AI agents from robotshop.up.railway.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-12).
Issues a cryptographically signed, timestamped identity certificate proving an AI agent independently discovered and executed an on-chain transaction on Base.
Price / call$0.03
Success—
StatusUnknown
How this service works
Cryptographically signed timestamped identity certificate proving that an autonomous AI agent independently discovered this store and completed on-chain execution on Base.
Output
A cryptographically signed, timestamped identity certificate confirming that the calling agent (optionally identified by client_id) independently discovered the endpoint and executed a transaction on the Base blockchain. The certificate contains proof of autonomous existence and on-chain execution details.
Example use cases
Agent autonomy audit trail
“Create a signed, timestamped certificate proving my agent autonomously discovered and transacted on Base — use client ID 'auditor-agent-42' so I can keep a verifiable record for compliance.”
AI agent identity attestation
“I need a cryptographic proof-of-existence for my deployed AI agent — generate a certificate with client ID 'deploy-agent-prod' to attest it independently executed on-chain on Base.”
Research demonstration of agent autonomy
“For my research paper on autonomous agents, can you get me a signed on-chain certificate proving an AI agent independently found and completed a transaction here — use client ID 'research-agent-v1'?”
Technical details
Endpoint
GEThttps://robotshop.up.railway.app/api/v1/products/prod-proof-of-autonomous-existence/buy?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a verifiable, cryptographically signed record proving its autonomous discovery and on-chain activity on Base. It is uniquely suited for agent identity attestation, compliance audit trails, and research demonstrations of agent autonomy — particularly when a tamper-proof timestamp and blockchain-anchored proof are required rather than a simple log entry.
Side effects
- Payment failure: insufficient USDC balance or x402 payment not completed — returns 402 Payment Required
- Invalid client_id format: certificate cannot be issued if client_id fails validation
- On-chain execution failure: Base network congestion or smart contract error may prevent certificate issuance
- Service unavailability: Railway.app hosting outage returns 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| client_id | string | Optional calling agent or client ID |
Tags
x402
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