Returns current, sourced and machine-readable evidence supporting or contradicti
Returns current, sourced and machine-readable evidence supporting or contradicting a prediction-market proposition before placing trades. Verifies onchain state, resolution rules, and primary provenance with deterministic receipts.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
243 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://www.tereno.xyz/api/v1/capabilities/prediction.evidence/invoke
| Category | Market data |
|---|---|
| Provider host | www.tereno.xyz |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 243 ms |
Example input (from the provider)
{
"body": {
"market": "polymarket",
"question": "Will Ethereum Pectra upgrade activate on mainnet before Q4 2026?"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"context": {
"description": "Optional contextual metadata from the agent.",
"type": "object"
},
"market": {
"description": "Market platform identifier (e.g. 'polymarket', 'omen', 'kalshi'). Defaults to 'polymarket'.",
"type": "string"
},
"marketUrl": {
"description": "Optional URL to the market page for resolution rules extraction.",
"format": "uri",
"type": "string"
},
"question": {
"description": "Prediction market question or proposition to audit with verifiable evidence.",
"maxLength": 2000,
"minLength": 5,
"type": "string"
}
},
"required": [
"question"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}