Rerank documents against a query over x402
Rerank documents against a query over x402 - the Cohere /rerank wire ({query, documents[], top_n} -> results with relevance_score), served by cohere/rerank-v3.5, $0.002 per call in USDC, no API key, no signup. Up to 50 documents (1,600 chars each, 40k total) and a 500-char query per call. Deterministic, so a byte-identical repeat within 10 minutes is served FREE from cache (X-Cache: hit; opt out with cache:false).
Answeringour last check, 2026-09-24
1 of 1checks answered this week
958 msmedian answer time
$0.002listed price per call
$0.002price 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://agent402.tools/v1/rerank
| Category | Everything else |
|---|---|
| Provider host | agent402.tools |
| Networks | algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=, eip155:10, eip155:1329, eip155:137, eip155:143, eip155:42161, eip155:42220, eip155:43114, eip155:4663, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet |
| Payment schemes | exact, upto |
| Self-reported calls, 30 days | 66 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 | $0.002 | 958 ms |
Example input (from the provider)
{
"body": {
"documents": [
"Paris is the capital of France.",
"Berlin is the capital of Germany.",
"Madrid is in Spain."
],
"query": "What is the capital of France?",
"top_n": 2
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"cache": {
"description": "Optional - false disables the default-on response cache",
"type": "boolean"
},
"documents": {
"description": "Documents to rank (1-50 strings, 1,600 chars each, 40k total)",
"items": {
"type": "string"
},
"type": "array"
},
"query": {
"description": "The search query (max 500 chars)",
"type": "string"
},
"top_n": {
"description": "Optional - return only the top N results",
"type": "integer"
}
},
"required": [
"query",
"documents"
]
},
"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": {
"properties": {
"id": {
"type": "string"
},
"model": {
"type": "string"
},
"results": {
"items": {
"properties": {
"document": {
"properties": {
"text": {
"type": "string"
}
},
"type": "object"
},
"index": {
"type": "integer"
},
"relevance_score": {
"type": "number"
}
},
"type": "object"
},
"type": "array"
},
"usage": {
"properties": {
"search_units": {
"type": "integer"
}
},
"type": "object"
}
},
"required": [
"id",
"model",
"results",
"usage"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}