> ## 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. # Ask for a search lane's estimate > Counts everyone who matches the search lane now, leaving out anyone you've already bought, your exclusions and removals. It usually takes under an hour: poll `GET` until `status` is `done`. An estimate for the same filters from the last 24 hours is returned instead of a new one (`reused: true`). Change the filters for a fresh count. **Free.** This doesn't spend your balance. ## OpenAPI ````yaml /api-reference/openapi.json post /api/v1/lanes/{code}/estimate 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_…`. Standard keys work with everything except billing, team and key management, which need an admin key. **Organizations and workspaces.** An organization holds the balance, invoices and people; lanes, leads, exports, lists, websites and webhooks live in its workspaces. A workspace key works in its workspace. An organization key manages workspaces, billing and people, and works in any of its workspaces with the header `Intent-Leads-Workspace: `. **What costs money.** Only `POST /api/v1/exports` with `"dry_run": false` spends your [balance](/guides/billing) (and website visitors as they're identified). Quotes, counts, checks, estimates, 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, by API or pushed to your webhook. - name: Webhooks description: >- Endpoints that receive events as they happen (removals, website visitors), signed, each with its own events, tests and delivery log. - name: Websites description: Identify the people who visit your websites. - name: Billing description: >- Your prepaid balance, prices and cost estimates (any key); top-ups and the monthly top-up (admin keys). - name: Team description: Members and invite links. Admin keys only. - name: Workspaces description: >- One workspace per client, all paid from your balance, with an optional monthly budget each; hand one over to the client. - 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/lanes/{code}/estimate: post: tags: - Lanes summary: Ask for a search lane's estimate description: >- Counts everyone who matches the search lane now, leaving out anyone you've already bought, your exclusions and removals. It usually takes under an hour: poll `GET` until `status` is `done`. An estimate for the same filters from the last 24 hours is returned instead of a new one (`reused: true`). Change the filters for a fresh count. **Free.** This doesn't spend your balance. operationId: requestContactEstimate parameters: - $ref: '#/components/parameters/LaneCode' - $ref: '#/components/parameters/Workspace' responses: '200': description: An estimate for the same filters already exists. content: application/json: schema: type: object properties: lane: type: string reused: type: boolean estimate: $ref: '#/components/schemas/ContactEstimate' required: - lane - reused - estimate example: lane: S1 reused: true estimate: status: done people: 41382 requested_at: '2026-10-14T06:12:41.528311+00:00' finished_at: '2026-10-14T06:12:41.528311+00:00' approximate: false sample: - seniority: VP+ department: Executive company: Example Family Medicine industry: Medical Practices employees: 34 city: Tampa state: Florida has_business_email: true has_phone: true has_linkedin: false error: null note: >- People who match the lane's filters now, leaving out anyone you've already bought, your exclusions and removals. Estimates usually take under an hour and are free. '202': description: Counting. content: application/json: schema: type: object properties: lane: type: string reused: type: boolean estimate: $ref: '#/components/schemas/ContactEstimate' required: - lane - reused - estimate example: lane: S1 reused: false estimate: status: queued people: null requested_at: '2026-10-14T06:12:41.528311+00:00' finished_at: null approximate: false sample: [] error: null note: Counting. This usually takes under an hour; it's free. '401': $ref: '#/components/responses/Unauthorized' '404': $ref: '#/components/responses/LaneNotFound' '409': description: An intent lane. content: application/json: schema: $ref: '#/components/schemas/Error' examples: not_a_search_lane: value: error: not_a_search_lane message: >- L1 is an intent lane. Estimates are for search lanes; intent lanes are checked daily. '500': $ref: '#/components/responses/InternalError' components: parameters: LaneCode: name: code in: path required: true description: Lane code, e.g. `L1`. Case-insensitive. schema: type: string example: L1 Workspace: name: Intent-Leads-Workspace in: header required: false description: >- Only with an **organization** key: the workspace to act in (its id; `?workspace=` works too). Lanes, leads, exports, lists, websites and webhooks live in workspaces. Without it, an organization key acts in its only workspace, or gets `400 workspace_required` (with the list of workspaces) when it has several. Workspace keys don't need it. On keys, team and activity it switches from the organization's own to that workspace's. schema: type: string format: uuid example: 0a0e5135-a046-4f8c-8ca9-33de7cf9e54d schemas: ContactEstimate: type: object properties: status: type: string enum: - none - queued - building - done - failed description: '`none`, `queued`, `building`, `done` or `failed`.' people: type: - integer - 'null' description: >- People who match now, leaving out anyone you've already bought, your exclusions and removals. requested_at: type: string format: date-time finished_at: type: - string - 'null' format: date-time approximate: type: boolean description: >- True when your company list is counted in parts: someone tied to two listed companies can count twice. sample: type: array items: type: object properties: seniority: type: - string - 'null' description: A band, e.g. VP+. department: type: - string - 'null' company: type: - string - 'null' industry: type: - string - 'null' employees: type: - integer - 'null' city: type: - string - 'null' state: type: - string - 'null' has_business_email: type: boolean has_phone: type: boolean has_linkedin: type: boolean required: - seniority - department - company - industry - employees - city - state - has_business_email - has_phone - has_linkedin description: >- Up to 10 people who match: seniority band, department, company and location, and which contact details exist. No names, titles or contact details. error: type: - string - 'null' note: type: string required: - status - people - requested_at - finished_at - approximate - sample - error - note 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. 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_…' LaneNotFound: description: No lane with that code. content: application/json: schema: $ref: '#/components/schemas/Error' examples: lane_not_found: value: error: lane_not_found message: No lane L9. 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.