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Polymer Labs Proof Generation & Query API
x402
Polymer Labs Proof Generation & Query API is a paid API for AI agents from api.polymer.zone, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Generates and queries cross-chain event proofs using JSON-RPC, enabling verification of on-chain events across blockchain networks
Price / call$0.1
Success—
StatusUnknown
How this service works
Access Polymer Labs proof generation and query service
Output
Returns a JSON-RPC response containing either a job ID for a newly submitted proof generation request (proof_request), or the current status and proof data for an existing job (proof_query), including the cryptographic proof needed to verify a cross-chain event.
Example use cases
Example prompt
“Generate a cross-chain proof for an event on source chain 10 at block 21500000 with global log index 42, then query the job status once it's submitted.”
Technical details
Endpoint
POSThttps://api.polymer.zone/x402/v1When to prefer
Use this endpoint when you need cryptographic proofs of on-chain events across blockchain networks, particularly for cross-chain interoperability via IBC-style proofs. Prefer this over generic blockchain RPC endpoints when you specifically need Polymer Labs' proof generation infrastructure for verifying events from one chain on another.
Side effects
- Invalid or missing srcChainId returns an error indicating unsupported chain
- Block number not yet finalized causes proof generation failure
- Invalid jobId in proof_query returns not-found error
- Malformed JSON-RPC request (missing jsonrpc version or id) returns parse error
- Payment not received (402) blocks request processing
- Log index does not exist at specified block returns empty or error response
Input
{
"id": 1,
"method": "proof_request",
"params": [
{
"srcChainId": 10,
"globalLogIndex": 42,
"srcBlockNumber": 21500000
}
],
"jsonrpc": "2.0"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| idrequired | number | Request identifier |
| methodrequired | string | RPC method to invoke |
| paramsrequired | array | proof_request: [{srcChainId, srcBlockNumber, globalLogIndex}], proof_query: [jobId] |
| jsonrpcrequired | string | JSON-RPC protocol version |
Output
{
"id": 1,
"result": 1564956,
"jsonrpc": "2.0"
}Tags
x402
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