PayAPI Market
Server Details
Search settlement-verified x402 APIs. Discovery is free. Agents pay the provider in USDC on Base.
- Status
- Healthy
- Uptime
- 99.6% over 41 days
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-06-18
- URL
TDQS
Scored across 3 tools
Each tool serves a clearly distinct purpose: fetching a single listing, browsing the catalogue by category, and free-text searching. There is no overlap or ambiguity between them.
All three tools follow a consistent verb_noun snake_case pattern: get_api, list_apis, search_apis. The singular/plural distinction aligns with the operation type, making the pattern predictable.
Three tools is well-scoped for a read-only API marketplace catalogue. Each tool covers a distinct access pattern without unnecessary additions or bloat.
For the stated domain of browsing and retrieving live API listings, the set is complete: single fetch, full list with optional category filter, and free-text search. No CRUD operations are expected since this is a read-only market surface.
Available Tools
3 toolsget_apiGet one PayAPI Market listingRead-onlyIdempotentInspect
Fetch a single live listing by its id or slug, including base_url, price range, network and verification state. Also returns a reliability object: score (0 to 100 or null), band (strong, established, thin, caution or unscored) and computed_at. Reliability is a running score from paid verifications, health history and payTo integrity, not a star rating and not a guarantee; unscored means it has not been computed for that listing yet. Method: https://payapi.market/how-an-agent-finds-payapi. Returns the listing whether or not it is verified, and reports payment_verified honestly. Free and read-only; spends nothing.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | Listing uuid or slug, as returned by search_apis or list_apis. |
list_apisList the PayAPI Market catalogueRead-onlyIdempotentInspect
Browse the live catalogue, optionally filtered to one category. Omit category for everything. Returns settlement-verified listings only unless verified_only is false. Free and read-only; spends nothing.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| category | No | Exact category name. Call with no category first to see the valid values. | |
| verified_only | No |
search_apisSearch the PayAPI Market catalogueRead-onlyIdempotentInspect
Free-text search across the live catalogue. Matches listing name, description, category and provider name. Returns settlement-verified listings only unless verified_only is false. Free and read-only; spends nothing.
| Name | Required | Description | Default |
|---|---|---|---|
| limit | No | ||
| query | Yes | What you are looking for, e.g. "uk property" or "sanctions screening". | |
| verified_only | No | Restrict to settlement-verified listings. Default true. |
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
3 tool updates
- First observed
get_api - First observed
list_apis - First observed
search_apis
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