> ## Documentation Index > Fetch the complete documentation index at: https://docs.intentleads.si/llms.txt > Use this file to discover all available pages before exploring further. # Get a topic > What one topic covers, the related terms it includes, and its one-day size. **Free.** This doesn't use any contacts from your plan. ## OpenAPI ````yaml /api-reference/openapi.json get /api/v1/topics/{topic} openapi: 3.1.0 info: title: Intent Leads API version: '1.0' description: >- The Intent Leads API finds B2B people actively researching the topics you sell into, and exports them with contact details into your own tools. **Authentication.** Send an API key as a bearer token: `Authorization: Bearer il_live_…`. Keys belong to one organization. Standard keys work with everything except billing, team and key management, which need an admin key. **What costs contacts.** Only `POST /api/v1/exports` with `"dry_run": false` uses contacts from your plan. Quotes, counts, checks, samples and re-downloads are free. **Errors.** Every error is JSON: `{"error": "code", "message": "Plain-English explanation"}`. Codes are stable; messages may change. **Conventions.** JSON by default. Dates are `YYYY-MM-DD` and timestamps ISO 8601, all in UTC. Lane codes (`L1`) are case-insensitive. servers: - url: https://intentleads.si security: - bearerAuth: [] tags: - name: Exports description: Quote (free) and buy new people from your lanes, then download them. - name: Leads description: Pull and re-download the leads you've exported, and list deliveries. - name: Lanes description: >- Create, inspect and tune lanes: keywords plus the companies and roles you want. - name: Topics description: >- Topics we already track: live at once, with history. Use them before adding new keywords. - name: Keywords description: >- Add and remove a lane's keywords: existing topics, or new ones approved as their own topic. - name: Checks description: >- Free lane checks that size every filter step over 14 days, plus quick topic signals. - name: Company list description: >- The target-company list your lanes can narrow to or use instead of industries. - name: Exclusions description: Companies and people left out of every lane, before anything is bought. - name: Suppressions description: People you exported who later asked to be removed. - name: Usage description: Contacts used and left this billing period. - name: Billing description: Plan, invoices and plan changes. Admin keys only. - name: Team description: Members and invite links. Admin keys only. - name: API keys description: Create, rename, rotate and revoke API keys. Admin keys only. - name: Account description: Check which organization a key belongs to, and rename it. - name: Reference description: Valid values for lane filters. - name: Activity description: A feed of changes and events in your organization. paths: /api/v1/topics/{topic}: get: tags: - Topics summary: Get a topic description: >- What one topic covers, the related terms it includes, and its one-day size. **Free.** This doesn't use any contacts from your plan. operationId: getTopic parameters: - name: topic in: path required: true description: Topic id, like `tp503611`. schema: type: string responses: '200': description: The topic. content: application/json: schema: type: object properties: topic: $ref: '#/components/schemas/TopicDetail' required: - topic example: topic: topic: tp503611 name: Outsourced Receptionist type: B2B category: Business & Industrial › Business Services path: - Business & Industrial - Business Services first_tracked: '2026-08-06' signal_latest_day: all: 3558 medium_plus: 308 as_of: '2026-10-14' deliverable: false description: >- Outsourced receptionist services provide businesses with remote call answering, message taking and appointment scheduling. related_terms: - outsourced receptionist - answering service - virtual receptionist - call answering '401': $ref: '#/components/responses/Unauthorized' '404': description: No such topic. content: application/json: schema: $ref: '#/components/schemas/Error' examples: topic_not_found: value: error: topic_not_found message: No such topic in the catalog. '500': $ref: '#/components/responses/InternalError' components: schemas: TopicDetail: allOf: - $ref: '#/components/schemas/Topic' - type: object properties: description: type: - string - 'null' description: What the topic covers and who reads it. related_terms: type: array items: type: string description: Terms the topic also covers. required: - description - related_terms example: topic: tp503611 name: Outsourced Receptionist type: B2B category: Business & Industrial › Business Services path: - Business & Industrial - Business Services first_tracked: '2026-08-06' signal_latest_day: all: 3558 medium_plus: 308 as_of: '2026-10-14' deliverable: false description: >- Outsourced receptionist services provide businesses with remote call answering, message taking and appointment scheduling. related_terms: - outsourced receptionist - answering service - virtual receptionist - call answering Error: type: object properties: error: type: string example: lane_not_found description: Stable machine-readable code, e.g. `lane_not_found`. message: type: string example: No lane L9. description: Plain-English explanation you can show to a person. required: - error - message description: Every error has this shape. Topic: type: object properties: topic: type: string description: >- Topic id, like `tp503611`. Add it to a lane with `POST /api/v1/lanes/{code}/keywords {"topic": ...}`. name: type: string type: type: - string - 'null' description: '`B2B` or `B2C`.' category: type: - string - 'null' path: type: array items: type: string description: Where the topic sits, broadest first. first_tracked: type: - string - 'null' format: date description: When we started tracking it. signal_latest_day: type: object properties: all: type: - integer - 'null' medium_plus: type: - integer - 'null' as_of: type: - string - 'null' format: date deliverable: type: boolean const: false required: - all - medium_plus - as_of - deliverable description: >- One day's research on the topic, worldwide and before any filter. A size guide, not people you could export. required: - topic - name example: topic: tp503611 name: Outsourced Receptionist type: B2B category: Business & Industrial › Business Services path: - Business & Industrial - Business Services first_tracked: '2026-08-06' signal_latest_day: all: 3558 medium_plus: 308 as_of: '2026-10-14' deliverable: false responses: Unauthorized: description: Missing, malformed, unknown or revoked API key. content: application/json: schema: $ref: '#/components/schemas/Error' examples: unauthorized: value: error: unauthorized message: 'Send a valid API key as: Authorization: Bearer il_live_…' InternalError: description: >- Unexpected server error. Safe to retry reads; retry an export only with the same `idempotency_key`. content: application/json: schema: $ref: '#/components/schemas/Error' examples: internal_error: value: error: internal_error message: Something went wrong. Try again. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: il_live_… description: >- An Intent Leads API key, e.g. `il_live_` followed by 32 letters and digits. Create one on the API and CLI page of the dashboard. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.