cited-research
Jev-powered research: routed search, cited answer, claims verified against sources. Ask a question, get a 5-8 sentence answer, each claim tagged to a numbered source, built from real page content - no invented facts. A fast paid LLM writes it, under 4.5s guaranteed; on a rare miss, a no-LLM extractive fallback (top sentences from the sources, picked by Jev) takes over instead, marked "synthesis":"extractive". Try GET /research/sample.
Offering
- Provider
- x402.agentindex.world
- Method
- POST
- Offering type
- Api Endpoint
- Transport type
- http
- Category
- Web Search Research
- Delivery
- Not provided
- Pricing model
- Not provided
- x402 version
- 2
Endpoint context
- URL
https://x402.agentindex.world/research- MIME type
- application/json
- First seen
- 2026-10-16T01:50:38.788Z
- Last seen
- Tags
- research report with sources, cited answer, web research
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.015 USDC
Atomic price: 15000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "15000",
"payTo": "0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d"
}
]Observed health
- Status
- Reachable
- Latest latency
- 1251 ms
- Average latency
- 1325 ms
- HTTP status
- 405
- Last checked
- Reachability
- 100% over 11 checks
Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.
Input schema
{
"type": "object",
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"type": "string",
"enum": [
"POST",
"PUT",
"PATCH"
]
},
"bodyType": {
"type": "string",
"enum": [
"json",
"form-data",
"text"
]
},
"body": {
"properties": {
"query": {
"type": "string",
"description": "The research question to answer, up to 500 characters."
},
"max_sources": {
"type": "integer",
"description": "How many web sources to consider, 1-10. Default 5."
}
},
"required": [
"query"
]
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"max_sources": {
"description": "How many web sources to consider, 1-10. Default 5.",
"type": "integer"
},
"query": {
"description": "The research question to answer, up to 500 characters.",
"type": "string"
}
},
"required": [
"query"
]
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"answer": {
"description": "5-8 sentences, each claim cited inline as [n] referring to the sources array (1-indexed).",
"type": "string"
},
"claims_verified": {
"description": "True only if a Jev check confirmed the answer's citations are supported. False if unsupported OR if verification was skipped/timed out - see claims_verified_reason.",
"type": "boolean"
},
"claims_verified_reason": {
"description": "Why claims_verified is false: 'jev_found_unsupported_claim', 'verification_timed_out_or_failed', 'insufficient_time_budget_remaining', or null when verified true.",
"type": [
"string",
"null"
]
},
"query": {
"type": "string"
},
"sources": {
"items": {
"properties": {
"published_at": {
"type": [
"string",
"null"
]
},
"source": {
"type": "string"
},
"title": {
"type": "string"
},
"url": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"synthesis": {
"description": "'llm' when a paid fast model wrote the answer (the common case). 'extractive' when that model missed its own tight time cap and the answer is instead the most relevant sentences already present in the sources, verbatim, picked by Jev - never a second LLM call.",
"enum": [
"llm",
"extractive"
],
"type": "string"
},
"timing_ms": {
"description": "search, synthesis, verify, total, in milliseconds.",
"type": "object"
},
"x402_receipt": {
"description": "Billing and provenance receipt for this call.",
"type": "object"
}
},
"required": [
"query",
"answer",
"synthesis",
"sources",
"claims_verified",
"timing_ms"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
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],
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}
},
"required": [
"input"
],
"type": "object"
}