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Search paid x402 APIs and datasets by need. Ranked: verified first, then probe score, then price. Each result carries what you choose on: status, score (0..1), evidence_tier, paid_verified (we bought it with real USDC and it delivered), has_sample (a cheap preview exists), price. Relevance comes from the query text; a specific need in plain words matches best. Zero results means nothing listed matches. Results are dated evidence, not guarantees. Returns a summary per listing; detail='full' returns every field. Free, read-only.
Max results (default 10).
What you need, specifically: data, freshness, format, constraint. Drives relevance.
summary (default) or full: every field per listing.
Optional filter: one of the most-populated categories. Omit if none fits; query text still finds long-tail ones.
Only listings offering this payment protocol. Omit for any.
Max price per call. Omit for no cap.
Min probe score, 0..1 (0.8 = reliably passing).
Only listings offering this MPP method, e.g. stripe, tempo, evm.
Tool list last changed Oct 25, 2026.
Search paid x402 APIs and datasets by need. Ranked: verified first, then probe score, then price. Each result carries what you choose on: status, score (0..1), evidence_tier, paid_verified (we bought it with real USDC and it delivered), has_sample (a cheap preview exists), price. Relevance comes from the query text; a specific need in plain words matches best. Zero results means nothing listed matches. Results are dated evidence, not guarantees. Returns a summary per listing; detail='full' returns every field. Free, read-only.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Max results (default 10). |
| query | string | What you need, specifically: data, freshness, format, constraint. Drives relevance. |
| detail | string | summary (default) or full: every field per listing. |
| category | string | Optional filter: one of the most-populated categories. Omit if none fits; query text still finds long-tail ones. |
| protocol | string | Only listings offering this payment protocol. Omit for any. |
| max_price | number | Max price per call. Omit for no cap. |
| min_score | number | Min probe score, 0..1 (0.8 = reliably passing). |
| mpp_method | string | Only listings offering this MPP method, e.g. stripe, tempo, evm. |
{
"type": "object",
"properties": {
"limit": {
"type": "integer",
"default": 10,
"maximum": 50,
"minimum": 1,
"description": "Max results (default 10)."
},
"query": {
"type": "string",
"description": "What you need, specifically: data, freshness, format, constraint. Drives relevance."
},
"detail": {
"enum": [
"summary",
"full"
],
"type": "string",
"default": "summary",
"description": "summary (default) or full: every field per listing."
},
"category": {
"enum": [
"data.other",
"data.crypto",
"data.web",
"data.misc",
"compute.llm",
"data.markets",
"compute.media",
"data.geo",
"data.weather",
"data.fx",
"compute.tools",
"data.news",
"data.search",
"data.stocks",
"data.contacts",
"data.defi",
"data.intelligence",
"data.derivatives",
"infra.validation",
"infra.utility",
"data.macro",
"data.enrichment",
"infra.trust",
"data.social",
"tools.verification",
"data.onchain",
"infra.discovery",
"data.github",
"data.research",
"developer.x402-audit",
"infra.inference",
"data.x402",
"infra.scraping",
"data.reference",
"data.security",
"compute.nlp",
"commerce.general",
"data.procurement",
"verification",
"data"
],
"type": "string",
"description": "Optional filter: one of the most-populated categories. Omit if none fits; query text still finds long-tail ones."
},
"protocol": {
"enum": [
"x402",
"mpp"
],
"type": "string",
"description": "Only listings offering this payment protocol. Omit for any."
},
"max_price": {
"type": "number",
"description": "Max price per call. Omit for no cap."
},
"min_score": {
"type": "number",
"description": "Min probe score, 0..1 (0.8 = reliably passing)."
},
"mpp_method": {
"type": "string",
"description": "Only listings offering this MPP method, e.g. stripe, tempo, evm."
}
}
}Full record for one listing id: request and response schemas, sample_query, observed 402 terms (network, payTo, scheme, x402 version), reputation detail, and paid_verification (our latest real USDC purchase, with its settlement tx where proven). Useful before paying: it shows the exact request shape and current reliability. Every timestamp has an _iso twin; on-chain counts describe the seller's wallet, usually shared by several listings, not this endpoint. Free, read-only.
| Argument | Type | Description |
|---|---|---|
| id* | string | Listing id: the id field of a search result, e.g. f094faea-d9d. |
{
"type": "object",
"required": [
"id"
],
"properties": {
"id": {
"type": "string",
"description": "Listing id: the id field of a search result, e.g. f094faea-d9d."
}
}
}Check an endpoint URL you already hold before paying it. Returns match 'active' with the listing's full record, 'delisted' (listed here, later removed), or 'unknown' (never checked here; absence is not a verdict either way). The record is dated evidence, not a safety rating. Free, read-only.
| Argument | Type | Description |
|---|---|---|
| url* | string | The endpoint URL as you hold it, including any query string. |
{
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "The endpoint URL as you hold it, including any query string."
}
}
}What agents searched this directory for, for deciding which x402 service to build or list. Terms ranked by how many distinct days they were asked, each with catalogue_top: the listings our own search already returns for it. A term being asked does not mean nothing serves it. The window ends a week behind live while the paid tier is on sale (a day when it is not; delay_hours and window_ends_at in the response say which); test traffic, sellers searching their own listings and identifying terms are excluded; floor: a term appears once at least 1 distinct non-seller client IP asked it. Client counts are IP ceilings, never buyer counts. Paged: limit (default 25), offset, next_offset. Free, read-only.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Terms per page, in rank order. |
| offset | integer | Where to start; each reply gives next_offset. |
{
"type": "object",
"required": [],
"properties": {
"limit": {
"type": "integer",
"default": 25,
"maximum": 1000,
"minimum": 1,
"description": "Terms per page, in rank order."
},
"offset": {
"type": "integer",
"default": 0,
"minimum": 0,
"description": "Where to start; each reply gives next_offset."
}
},
"additionalProperties": false
}