Research Brief with Citations
Web research in one call: ask a question and get a short cited answer, summarize a topic or get a Wikipedia summary. Returns a 1-3 sentence answer, key points tied to source ids, and the sources used (typically 1-5: title, URL, publisher, date, supporting quote), confidence and a free permalink. Sources: Wikipedia first, plus web pages, Stack Overflow, GitHub, papers, docs. Example: "What is the Model Context Protocol?". 0.01 USDC/call; failed calls are free.
Offering
- Provider
- x402-seller-pmlm.onrender.com
- Method
- GET
- 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-seller-pmlm.onrender.com/report- MIME type
- application/json
- First seen
- 2026-10-16T01:50:06.715Z
- Last seen
- Tags
- research brief, web research, summarize a topic, wikipedia summary, answer a question with sources
Payment pricing
x402 payment terms are the authoritative price for calling this endpoint.
- Payment option 1
- 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact - Payment option 2
- 0.01 USDC
Atomic price: 10000 · Network: eip155:137 · Asset: USDC · Scheme: exact - Payment option 3
- 0.01 USDC
Atomic price: 10000 · Network: eip155:42161 · Asset: USDC · Scheme: exact - Payment option 4
- 0.01 USDC
Atomic price: 10000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact - Payment option 5
- 0.01 USDC
Atomic price: 10000 · Network: eip155:43114 · Asset: USDC · Scheme: exact - Payment option 6
- 10000 atomic units
Atomic price: 10000 · Network: eip155:1329 · Asset: 0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392 · Scheme: exact
Raw x402 terms
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"amount": "10000",
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]Observed health
- Status
- Healthy
- Latest latency
- 143 ms
- Average latency
- 428 ms
- HTTP status
- 402
- Last checked
- Reachability
- 100% over 8 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": [
"GET"
]
},
"queryParams": {
"type": "object",
"properties": {
"q": {
"type": "string",
"minLength": 2,
"maxLength": 300,
"description": "Question or topic in plain words, e.g. 'What is the Model Context Protocol?', 'How does a heat pump work?', 'history of the transistor'"
},
"depth": {
"type": "string",
"enum": [
"quick",
"standard"
],
"description": "quick = encyclopedia + instant answer only (faster); standard (default) adds official docs, Stack Overflow, GitHub, articles linked from Hacker News, and scholarly papers"
},
"lang": {
"type": "string",
"pattern": "^[a-z]{2,3}$",
"description": "Wikipedia language code, default en"
}
},
"required": [
"q"
]
}
},
"required": [
"type",
"method"
],
"additionalProperties": false
}Output schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"depth": {
"description": "quick = encyclopedia + instant answer only (faster); standard (default) adds official docs, Stack Overflow, GitHub, articles linked from Hacker News, and scholarly papers",
"enum": [
"quick",
"standard"
],
"type": "string"
},
"lang": {
"description": "Wikipedia language code, default en",
"pattern": "^[a-z]{2,3}$",
"type": "string"
},
"q": {
"description": "Question or topic in plain words, e.g. 'What is the Model Context Protocol?', 'How does a heat pump work?', 'history of the transistor'",
"maxLength": 300,
"minLength": 2,
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"answer": {
"description": "1-3 sentence direct answer (plain text; ids in answer_citations)",
"type": "string"
},
"answer_citations": {
"description": "source ids supporting the answer",
"items": {
"type": "integer"
},
"type": "array"
},
"bullets": {
"description": "Key points, each with [n] citations",
"items": {
"type": "string"
},
"type": "array"
},
"cached": {
"type": "boolean"
},
"checked_at": {
"description": "ISO time the sources were checked",
"type": "string"
},
"confidence": {
"description": "high = 3+ cited sources from 2+ providers or 2+ primary/authoritative publishers",
"enum": [
"high",
"medium",
"low"
],
"type": "string"
},
"confidenceBasis": {
"type": "string"
},
"confidence_why": {
"description": "One line: why this confidence level",
"type": "string"
},
"depth": {
"type": "string"
},
"generatedAt": {
"type": "string"
},
"key_points": {
"description": "Key points, each tied to the source ids that support it",
"items": {
"properties": {
"citations": {
"items": {
"type": "integer"
},
"type": "array"
},
"text": {
"type": "string"
}
},
"required": [
"text",
"citations"
],
"type": "object"
},
"type": "array"
},
"lang": {
"type": "string"
},
"latencyMs": {
"type": "integer"
},
"method": {
"description": "extractive, extractive (Wikipedia lead + ranked sentences), or llm-synthesis:<model>",
"type": "string"
},
"next": {
"description": "Suggested follow-up calls",
"items": {
"properties": {
"call": {
"type": "string"
},
"endpoint": {
"type": "string"
},
"why": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"permalink": {
"description": "Free shareable page for this answer (/a/<id>; add ?format=json). Kept in memory, may reset on redeploy",
"type": "string"
},
"providers": {
"items": {
"type": "string"
},
"type": "array"
},
"query": {
"type": "string"
},
"sourceCount": {
"type": "integer"
},
"sources": {
"items": {
"properties": {
"id": {
"type": "integer"
},
"provider": {
"type": "string"
},
"published": {
"description": "YYYY-MM-DD when known",
"type": [
"string",
"null"
]
},
"publishedAt": {
"type": [
"string",
"null"
]
},
"publisher": {
"type": "string"
},
"quote": {
"description": "Sentence from this source that supports the cited claim",
"type": "string"
},
"snippet": {
"type": "string"
},
"title": {
"type": "string"
},
"type": {
"enum": [
"encyclopedia",
"instant_answer",
"discussion",
"paper",
"web_page"
],
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"id",
"title",
"url"
],
"type": "object"
},
"type": "array"
},
"summary": {
"description": "Same answer with inline [n] citations",
"type": "string"
},
"topic": {
"description": "Topic extracted from q (request words like 'summarize' removed)",
"type": "string"
},
"wikipedia": {
"description": "Wikipedia summary card for the topic, when one matches",
"properties": {
"description": {
"type": [
"string",
"null"
]
},
"extract": {
"type": "string"
},
"lastEdited": {
"type": [
"string",
"null"
]
},
"thumbnail": {
"type": [
"string",
"null"
]
},
"title": {
"type": "string"
},
"url": {
"type": "string"
},
"wikidataId": {
"type": [
"string",
"null"
]
}
},
"type": [
"object",
"null"
]
}
},
"required": [
"answer",
"key_points",
"sources",
"confidence",
"checked_at",
"query"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}