> ## Documentation Index > Fetch the complete documentation index at: https://monid.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Semantic search grouped into categories > The shared discover pipeline's match set aggregated into category nodes with per-node match counts — the semantic twin of `GET /public/v1/categories?q=` (same response shape; counts are within the bounded semantic match set). ## OpenAPI ````yaml https://monid.ai/openapi.json post /v1/discover/categories openapi: 3.1.0 info: title: Monid API version: 0.1.0 description: >- Agentic payment platform for data — agents discover and buy data on demand. Authenticated `/v1/*` routes accept a Monid API key or Clerk JWT as a Bearer token. All errors return `{ code, message }`. List endpoints use cursor pagination; consult each operation schema for its last-page cursor encoding. servers: - url: https://api.monid.ai description: Production - url: https://monid.ai description: Public registry alias (public/v1 only) security: [] paths: /v1/discover/categories: post: tags: - Discover summary: Semantic search grouped into categories description: >- The shared discover pipeline's match set aggregated into category nodes with per-node match counts — the semantic twin of `GET /public/v1/categories?q=` (same response shape; counts are within the bounded semantic match set). parameters: - $ref: '#/components/parameters/AgentModelHeader' - $ref: '#/components/parameters/AgentHarnessHeader' - $ref: '#/components/parameters/AgentSessionIdHeader' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/DiscoverCategoriesRequest' responses: '200': description: Category nodes with semantic match counts content: application/json: schema: $ref: '#/components/schemas/PublicCategoriesResponse' '400': description: Bad request — input failed validation content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Unauthorized — missing or invalid credentials content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Forbidden — caller has no workspace or no access content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Rate limited (errorCode `RATE_LIMITED`, message `Rate limited. Retry after Ns.`) — the `Retry-After` header carries whole seconds until the caller may retry; `RateLimit-Limit/-Remaining/-Reset` describe the binding limit as numbers only (also sent on allowed responses that matched a rule; responses that matched no rule, or an `unlimited` exemption, carry none of them). Applies to every authenticated `/v1` route (per API key / user / workspace); POST /v1/run additionally enforces per-provider/endpoint run limits. content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' security: - Bearer: [] components: parameters: AgentModelHeader: name: X-Monid-Agent-Model in: header required: false description: >- Model driving the calling agent. Optional; a value that is empty, longer than 256 characters or not printable ASCII is ignored (never an error). schema: type: string maxLength: 256 example: claude-opus-5-5 AgentHarnessHeader: name: X-Monid-Agent-Harness in: header required: false description: >- Agent harness or client making the call (e.g. a coding agent, an agent framework). Optional; a value that is empty, longer than 256 characters or not printable ASCII is ignored (never an error). schema: type: string maxLength: 256 example: claude-code AgentSessionIdHeader: name: X-Monid-Agent-Session-Id in: header required: false description: >- Caller-side session identifier, so the calls of one agent session (discover → inspect → run → polling) can be correlated. Optional; a value that is empty, longer than 256 characters or not printable ASCII is ignored (never an error). schema: type: string maxLength: 256 example: 01JABCDEF0123456789XYZ schemas: DiscoverCategoriesRequest: type: object properties: q: type: string minLength: 1 maxLength: 1000 description: Natural-language search query. example: twitter posts minScore: type: number minimum: 0 maximum: 2 description: >- Per-call override for the post-rerank score floor — same semantics as the legacy POST /v1/discover body field. example: 0.2 includeUnavailable: type: boolean default: false description: >- Endpoints currently in outage are hidden by default (the page is back-filled from the next ranked candidates). Set true to include them — marked `metrics.status: "outage"` and ranked last. example: false supportsX402: type: boolean description: >- Filter by static eligibility for x402 payment (`POST /x402/v1/run`): `true` keeps only payable endpoints, `false` only non-payable ones. Omit for all endpoints. Network availability and request/payment validation are checked at execution time. x402Network: type: string minLength: 1 maxLength: 100 description: >- Narrow to endpoints payable via x402 on this customer-payment network (CAIP-2 id, e.g. `eip155:8453`). Implies `supportsX402=true`; an unknown/unconfigured id returns an empty page. example: eip155:8453 readonly: type: boolean description: >- Filter by whether running the endpoint can change your workspace resources (phone numbers, files, asset libraries): `true` keeps only endpoints that cannot create, modify or delete them, `false` only endpoints that can. Omit for all endpoints. This describes RESOURCE effects only — a readonly endpoint may still perform real-world actions and is still billed. effects: type: array items: type: string enum: - creates - updates - deletes minItems: 1 description: >- Keep only endpoints whose run can have AT LEAST ONE of the named effects on your workspace resources (phone numbers, files, asset libraries): `creates`, `updates`, `deletes`. Omit for all endpoints. Takes precedence over `readonly` (`readonly=true` is the alias for "no write effects"). Resource effects only — an endpoint with no effect may still perform real-world actions and is still billed. example: - creates - deletes required: - q PublicCategoriesResponse: type: object properties: items: type: array items: $ref: '#/components/schemas/PublicCategoryNode' description: >- Flat node list: tops (priority order) then leaves/providers (alphabetical). Hidden, unlinked, and zero-count nodes omitted. totalEndpointCount: type: integer minimum: 0 description: >- Exact number of catalog-visible endpoints (with `q`: matching the query) — drives the All rail count. required: - items - totalEndpointCount Error: type: object properties: code: type: integer description: HTTP status code, duplicated in the body. example: 400 message: type: string description: Human-readable error description. example: Bad Request hints: type: object additionalProperties: anyOf: - type: string - type: object properties: kind: type: string enum: - command - discover - inspect - run - getRun - stop - releaseResource - topup command: type: string query: type: string provider: type: string endpoint: type: string runId: type: string resourceId: type: string stripe: type: string dashboard: type: string docs: type: string comment: type: string required: - kind description: >- Optional next actions, rendered for the calling client like run-response hints (e.g. the paid TinyFish version on a free-quota 429 — spending permission required). errorCode: type: string enum: - RATE_LIMITED - X402_WORKSPACE_RESOURCES - X402_WORKSPACE_ONLY - X402_ACCRUING_COST - X402_EXCEEDS_SETTLEMENT_WINDOW - X402_VALIDITY_WINDOW_TOO_SHORT - X402_UNBOUNDED_PRICE - X402_PROMOTION - INSUFFICIENT_SCOPE - WALLET_INSUFFICIENT_FUNDS - IDENTITY_PROVIDER_UNKNOWN - IDENTITY_LINK_REQUIRES_SESSION - IDENTITY_LINK_STATE_INVALID - IDENTITY_VERIFICATION_FAILED - IDENTITY_PROVIDER_UNAVAILABLE - IDENTITY_ALREADY_LINKED - IDENTITY_USER_ALREADY_LINKED - IDENTITY_LINK_RATE_LIMITED - IDENTITY_REQUIRED - PROMO_IDENTITY_REDEEMED - PROMO_REDEEM_REQUIRES_SESSION - PROMO_CODE_REDEEMED_BY_WORKSPACE - PROMO_CODE_REDEEMED_BY_USER description: >- OPTIONAL machine-readable discriminant from the documented `ApiErrorCode` registry. Absent on legacy errors; clients MUST treat unknown values as absent. required: - code - message PublicCategoryNode: oneOf: - $ref: '#/components/schemas/TopCategoryNode' - $ref: '#/components/schemas/LeafCategoryNode' - $ref: '#/components/schemas/ProviderCategoryNode' discriminator: propertyName: kind mapping: top: '#/components/schemas/TopCategoryNode' category: '#/components/schemas/LeafCategoryNode' provider: '#/components/schemas/ProviderCategoryNode' TopCategoryNode: type: object properties: id: type: string description: Stable node id (e.g. "social-media", "twitter", "apify"). displayName: type: string description: >- Display label — manifest copy for tops/leaves; resolved provider display name for provider nodes. description: type: string description: Short blurb, when available. endpointCount: type: integer minimum: 0 description: >- Live endpoint count (with `q`: endpoints matching the query). Top counts are DISTINCT-document counts across their members. noMarkup: type: string enum: - all - partial - none description: >- `all`: every endpoint in this node is tagged `no-markup` (provider's standard rate, no platform fee). `partial`: at least half are. `none`: fewer than half. Same scope as `endpointCount`. example: all kind: type: string enum: - top description: System group node. children: type: array items: type: string description: >- Ordered member node ids (linked leaves in display order, then provider nodes). required: - id - displayName - endpointCount - noMarkup - kind - children LeafCategoryNode: type: object properties: id: type: string description: Stable node id (e.g. "social-media", "twitter", "apify"). displayName: type: string description: >- Display label — manifest copy for tops/leaves; resolved provider display name for provider nodes. description: type: string description: Short blurb, when available. endpointCount: type: integer minimum: 0 description: >- Live endpoint count (with `q`: endpoints matching the query). Top counts are DISTINCT-document counts across their members. noMarkup: type: string enum: - all - partial - none description: >- `all`: every endpoint in this node is tagged `no-markup` (provider's standard rate, no platform fee). `partial`: at least half are. `none`: fewer than half. Same scope as `endpointCount`. example: all kind: type: string enum: - category description: Leaf category node. shortDescription: type: string description: >- Short tile copy (at most 88 characters) for the Tools directory tile. Authored separately from `description`, which stays the category/provider page copy. example: Profiles, posts, hashtags and comments from Instagram. parents: type: array items: type: string description: Top ids this leaf is linked under (a leaf may have several parents). required: - id - displayName - endpointCount - noMarkup - kind - shortDescription - parents ProviderCategoryNode: type: object properties: id: type: string description: Stable node id (e.g. "social-media", "twitter", "apify"). displayName: type: string description: >- Display label — manifest copy for tops/leaves; resolved provider display name for provider nodes. description: type: string description: Short blurb, when available. endpointCount: type: integer minimum: 0 description: >- Live endpoint count (with `q`: endpoints matching the query). Top counts are DISTINCT-document counts across their members. noMarkup: type: string enum: - all - partial - none description: >- `all`: every endpoint in this node is tagged `no-markup` (provider's standard rate, no platform fee). `partial`: at least half are. `none`: fewer than half. Same scope as `endpointCount`. example: all kind: type: string enum: - provider description: Derived provider node. shortDescription: type: string description: >- Short tile copy (at most 88 characters) for the Tools directory tile. Authored separately from `description`, which stays the category/provider page copy. example: AI-powered web search with page content, highlights and summaries. provider: type: string description: Provider slug. url: type: string format: uri description: >- The provider's own public website, when it declares one (`ProviderInfo.url`). Absent otherwise — never null, never empty. Provider nodes only: a leaf/top category has no vendor to link to. This is display copy, NOT the endpoint-level documentation URL (`docUrl`). example: https://context.dev docsUrl: type: string format: uri description: >- The provider's own API documentation, when known (`ProviderInfo.docsUrl`). Provider nodes only; absent otherwise. example: https://docs.context.dev parents: type: array items: type: string description: >- Top ids this provider node is linked under (a node may have several parents). promotion: type: object properties: discountPercent: type: integer example: 50 required: - discountPercent description: >- Present ONLY while this provider runs an ACTIVE limited-time promotion (`/promo/...` endpoints) — the tile's "N% OFF" tag. Provider nodes only. required: - id - displayName - endpointCount - noMarkup - kind - shortDescription - provider - parents securitySchemes: Bearer: type: http scheme: bearer description: >- Monid API key (`Authorization: Bearer mk_...`) or Clerk-issued JWT. Each operation lists the ONE scope an API key needs. `{resource}:*` grants every action on that resource; `*` grants everything; Clerk sessions hold `*`. Operations with an empty list need no scope. Scope catalog: `GET /v1/api-keys/scopes`. x-aep-authentication-method: api-key ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.