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Predge Polymarket Condition Attestation
x402
Predge Polymarket Condition Attestation is a paid API for AI agents from api.predge.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns a cryptographically signed on-chain attestation of the resolved outcome for a given Polymarket prediction market condition ID
Price / call$0.02
Success—
StatusUnknown
How this service works
Real-time alerts on whale traders on Polymarket. Heuristic Insider Watch, wallet scoring 0–100, Bloomberg-style web terminal. Free plan included.
Output
A JSON object containing the market title, category, resolution (yes/no), resolved_at timestamp, a correct flag indicating whether the queried side matched the outcome, and a full ed25519 cryptographic attestation object including the issuer, algorithm, canonical payload string, hex signature, and public key — suitable for on-chain verification or audit purposes.
Example use cases
Verify prediction market bet outcome
“I bet yes on the Fed rate cut market on Polymarket — can you pull a signed Predge attestation for condition 0x178a746e2b342c25b1d78d0f0d0ea77157c9b6d40b2e97ffbf827cd7f9994c39 and tell me if my yes position was correct?”
Smart contract resolution proof
“I need a cryptographically verifiable proof that Polymarket condition 0xabc123... resolved as yes — fetch me the Predge ed25519-signed attestation so I can submit it on-chain.”
Audit prediction market resolution history
“Can you check Predge for a signed attestation on Polymarket condition 0xdef456... and confirm what the official resolution was and when it was resolved?”
Technical details
Endpoint
GEThttps://api.predge.io/v1/attest/%7BconditionId%7DWhen to prefer
Use this endpoint when you need a tamper-proof, cryptographically verifiable record of a resolved Polymarket prediction market outcome — particularly when on-chain proof, audit trails, or smart contract settlement verification are required. It is the right choice over reading raw chain data when you need a structured, pre-signed attestation with ed25519 signatures you can verify without running your own node. Prefer it when you already have a Polymarket conditionId and need authoritative resolution confirmation with a verifiable chain of custody.
Side effects
- conditionId not found or invalid hex — returns error or empty response
- Market not yet resolved — resolved field will be false and resolution may be null
- Invalid side parameter — must be 'yes' or 'no'
- Payment not provided or insufficient USDC — 402 Payment Required response
- Signature verification failure on client side if canonical field is mishandled
- Rate limiting or API unavailability returning 429 or 5xx errors
Output
Schema · Response
{
"type": "json",
"example": {
"note": "resolved on-chain outcome truth read straight from the settled Polymarket market row, NOT a prediction or model estimate.",
"title": "Will the Fed cut rates in September?",
"correct": true,
"category": "economics",
"resolved": true,
"resolution": "yes",
"attestation": {
"issuer": "predge.io",
"verify": "ed25519: verify `signature` (hex) over the UTF-8 bytes of `canonical` using `public_key` (hex, raw 32-byte ed25519). `canonical` is JSON with keys sorted lexicographically and no whitespace.",
"payload": {
"issuer": "predge.io",
"correct": true,
"version": "predge-attest-v1",
"platform": "polymarket",
"resolved": true,
"issued_at": "2026-07-19T10:00:00.000Z",
"resolution": "yes",
"resolved_at": "2026-07-19T00:00:00.000Z",
"condition_id": "0x178a746e2b342c25b1d78d0f0d0ea77157c9b6d40b2e97ffbf827cd7f9994c39",
"queried_side": "yes"
},
"version": "predge-attest-v1",
"algorithm": "ed25519",
"canonical": "{\"condition_id\":\"0x178a…\",\"correct\":true,\"issued_at\":\"2026-07-19T10:00:00.000Z\",\"issuer\":\"predge.io\",\"platform\":\"polymarket\",\"queried_side\":\"yes\",\"resolved\":true,\"resolved_at\":\"2026-07-19T00:00:00.000Z\",\"resolution\":\"yes\",\"version\":\"predge-attest-v1\"}",
"signature": "3a1f…64-byte-hex…9c",
"public_key": "d75a9807...c7e2a1"
},
"resolved_at": "2026-07-19T00:00:00.000Z",
"condition_id": "0x178a746e2b342c25b1d78d0f0d0ea77157c9b6d40b2e97ffbf827cd7f9994c39",
"queried_side": "yes",
"outcome_verified": {
"resolution": true
}
}
}Tags
x402
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