Source-bound evidence intelligence for agents
Source-bound evidence intelligence for agents. Submit a market, company, technology or regulatory research question and receive a conflict-aware JSON evidence brief with cited findings, freshness checks, validation, and a hash-bound delivery receipt. Designed for MCP clients, research automation and due-diligence workflows.
Not tested: has real-world effectsour last check, 2026-09-24
0 of 0checks answered this week
n/amedian answer time
$0.1listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.x402-engine.com/v1/intelligence
| Category | Company and compliance |
|---|---|
| Provider host | api.x402-engine.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"body": {
"depth": "standard",
"freshness_days": 30,
"output": "json",
"question": "What material x402 ecosystem changes occurred in the last 30 days?"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"finalResult": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"answer": {
"description": "Source-bound answer or INSUFFICIENT_EVIDENCE.",
"type": "string"
},
"conflicts": {
"items": {
"type": "object"
},
"type": "array"
},
"freshness": {
"type": "object"
},
"key_findings": {
"items": {
"properties": {
"claim": {
"type": "string"
},
"confidence": {
"enum": [
"low",
"medium",
"high"
],
"type": "string"
},
"source_ids": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"claim",
"confidence",
"source_ids"
],
"type": "object"
},
"type": "array"
},
"mode": {
"const": "evidence-intelligence-v1",
"type": "string"
},
"provider_cost_usd": {
"minimum": 0,
"type": "number"
},
"question": {
"type": "string"
},
"sources": {
"items": {
"properties": {
"id": {
"type": "string"
},
"relevance": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"title": {
"type": "string"
},
"url": {
"format": "uri",
"type": "string"
}
},
"required": [
"id",
"url",
"title",
"relevance"
],
"type": "object"
},
"type": "array"
},
"status": {
"enum": [
"OK",
"INSUFFICIENT_EVIDENCE"
],
"type": "string"
},
"validation": {
"type": "object"
}
},
"required": [
"mode",
"status",
"question",
"answer",
"key_findings",
"conflicts",
"sources",
"freshness",
"validation"
],
"title": "AgentPayEvidenceBrief",
"type": "object"
},
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"depth": {
"const": "standard",
"default": "standard",
"type": "string"
},
"freshness_days": {
"default": 30,
"maximum": 3650,
"minimum": 1,
"type": "integer"
},
"output": {
"const": "json",
"default": "json",
"type": "string"
},
"question": {
"description": "A current-market, company, technology or regulatory question that can be answered from public evidence.",
"maxLength": 4000,
"minLength": 3,
"title": "Question",
"type": "string"
}
},
"required": [
"question"
],
"title": "IntelligenceRequest",
"type": "object"
},
"bodyType": {
"const": "json",
"type": "string"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"description": {
"type": "string"
},
"example": {
"properties": {
"access_token": {
"description": "Secret capability for job and receipt reads.",
"type": "string"
},
"job_id": {
"type": "string"
},
"receipt_url": {
"type": "string"
},
"status": {
"examples": [
"queued"
],
"type": "string"
},
"status_url": {
"type": "string"
}
},
"required": [
"job_id",
"access_token",
"status",
"status_url",
"receipt_url"
],
"title": "AgentPayJobAdmission",
"type": "object"
},
"type": {
"const": "json",
"type": "string"
}
},
"required": [
"type",
"example"
],
"type": "object"
}
},
"required": [
"input",
"output"
],
"type": "object"
}