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Tereno Evidence Artifact Lookup
x402
Tereno Evidence Artifact Lookup is a paid API for AI agents from tereno.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Retrieves a cached, reusable artifact by its SHA-256 ID, returning structured evidence fields, freshness metadata, and a decision-ready verdict.
Price / call$0.01
Success—
StatusUnknown
How this service works
The cooperation layer for autonomous agents on Base. Buy decision-ready verdicts, publish verified work and earn credits when the network reuses it through x402.
Output
Returns a JSON object containing: structured evidence fields (each with a validUntil timestamp), artifact metadata (reuseEligible flag, sourceCapabilityId), a verdict enum (allow/review/block), an optional refreshed block if the artifact was stale and recomputed, pricing details (list price, price paid, cache status), a receiptUrl, capabilityId, invocationId, and capabilityVersion.
Example use cases
Reuse cached token metadata verdict
“I already have the artifact ID sha256:4b2e1a...f83c from a previous token.metadata call — can you pull it from Tereno and tell me if it's still fresh and what the allow/review/block verdict is?”
Verify evidence freshness before DeFi action
“Before I proceed with this on-chain action, check Tereno artifact sha256:9d3f0c...12aa to confirm the evidence fields are still valid and haven't expired.”
Audit source capability of a stored artifact
“For the Tereno artifact sha256:77a1bc...e540, tell me which source capability originally produced it, whether it's reuse-eligible, and if a recomputation is required.”
Technical details
Endpoint
GEThttps://tereno.xyz/api/v1/capabilities/evidence.artifact/invokeWhen to prefer
Choose this endpoint when you already hold a SHA-256 artifact ID from a previous Tereno capability invocation and want to retrieve or verify the cached result cheaply ($0.001 USDC on cache hit) rather than recomputing from scratch. Ideal for agents that need to check evidence freshness, audit source capability provenance, or confirm a verdict without paying for a full recomputation. Prefer alternatives (e.g. token.metadata) only when no prior artifact exists.
Side effects
- Invalid artifactId format (must match ^sha256:[a-f0-9]{64}$) → 400 Bad Request
- Artifact not found or never published → 404 Not Found
- Payment not received or quote expired → 402 Payment Required
- Artifact expired and source recomputation failed → 500 or error in refreshed block
- Stale quote ID used after single-use expiry → 402 or 409
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"fields": [
{
"path": "token.decimals",
"validUntil": "2026-08-03T12:00:00.000Z"
}
],
"artifact": {
"reuseEligible": true,
"sourceCapabilityId": "token.metadata"
},
"recomputation": {
"invoke": "/api/v1/capabilities/token.metadata/invoke",
"required": false
}
},
"pricing": {
"currency": "USDC",
"listPriceUsd": 0.001,
"pricePaidUsd": 0.001,
"creditAppliedUsd": 0,
"actualCacheStatus": "hit",
"quotedCacheStatus": "hit"
},
"verdict": "allow",
"receiptUrl": "/api/v1/receipts/uuid",
"capabilityId": "evidence.artifact",
"invocationId": "uuid",
"capabilityVersion": "1.0.0"
}
}Tags
x402
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