> ## Documentation Index > Fetch the complete documentation index at: https://vaquill.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # List watchable boards > List every board (a tracked corpus source, identified by corpusType + state) available to watch. A board's refresh cadence is fixed by what we already track; watching it does not change how often it refreshes. Narrow with `corpusType` and/or `state` when you already know what you want to watch, rather than paging the whole registry: `?corpusType=state_regulation&state=tx` is one board, and `?state=federal` is every federal one. `corpusType` is matched case-insensitively, and `state=federal` selects the boards that have no state. `total` is the number of boards matching your filters BEFORE paging, and `hasMore` is true when another page exists, matching the paging contract on `/us/statutes/search` and the change feeds. `lastRetrievedAt` says when we last pulled that source from its publisher, and `retrievalStatus` says whether we are still polling it. Read them together with `cadence` before treating silence on a watch as 'nothing changed'. `publishesSourceChangedOn` says whether this board's change events can carry the publisher's own date for a change. It is false on most boards, and there it means the date is never present rather than sometimes missing, so check it before writing code that waits for `sourceChangedOn` to appear. True today on `cfr` only. **Free.** Requires an API key and is rate-limited, but costs no credits. ## OpenAPI ````yaml https://api.vaquill.ai/external/openapi.json get /api/v1/boards openapi: 3.1.0 info: title: Vaquill Developer API description: >- Public API for legal statutes and legislation. **Authentication**: Pass your API key as `Authorization: Bearer vq_key_...` (preferred) or in the `X-API-Key` header. The `api_key` query parameter also works where a header cannot be set, but a URL ends up in logs and browser history. Sending two different keys in one request is rejected with a 401. **Credits**: Each call costs API credits. See `GET /api/v1/api-credits/pricing` for the full pricing matrix. ## Jurisdictions | Jurisdiction | Coverage | `countryCode` | |---|---|---| | **United States** | USC and the Statutes at Large, the CFR and its annual editions, all 52 state and territory statutory codes (50 states plus DC and Puerto Rico), state administrative regulations, court rules, federal and state constitutions, federal agency guidance and adjudications, the Federal Register, the Sentencing Guidelines and US tax treaties. | `US` | See the full [Coverage page](https://www.vaquill.ai/docs/api-guide/coverage) for the jurisdiction-by-jurisdiction breakdown, or call `/us/statutes/coverage` for live counts. Coverage is per (jurisdiction, corpusType) pair, so treat that endpoint as the authoritative list rather than this summary. ## Endpoints - **US Statutes**: Search and retrieve any of the corpora above with full text, resolve a citation to its exact section, browse the statutory hierarchy, read a section as it stood on a past date, and follow its change history, cross-references and defined terms - **Board Watches**: Subscribe to a corpus source and get a webhook or email when it refreshes with real changes (free, API key required) - **Pricing**: Credit costs per endpoint (no auth required) ## Rate limits Limits are enforced per API key and scale with your plan. A `429` response includes a `Retry-After` header. | Plan | Per minute | Per hour | Per day | |---|---|---|---| | Vaquill API Pro | 60 | 1,000 | 2,000 | | Vaquill API Business | 150 | 2,500 | 10,000 | For full documentation, visit the [API Reference](https://www.vaquill.ai/docs/api-reference/). version: 1.0.0 contact: name: Vaquill API Support url: https://www.vaquill.ai email: support@vaquill.ai license: name: Proprietary url: https://www.vaquill.ai/terms termsOfService: https://www.vaquill.ai/terms servers: - url: https://api.vaquill.ai description: Production security: - ApiKeyAuth: [] - ApiKeyHeader: [] - ApiKeyQuery: [] tags: - name: US Statutes description: >- Search and retrieve US primary law. Covers the United States Code and the Statutes at Large, the Code of Federal Regulations and its annual editions, state statutory codes and administrative regulations, federal and state constitutions, court rules, Federal Register rules and Presidential documents, federal and state agency guidance, agency adjudications, state Attorney General opinions, the Sentencing Guidelines and US tax treaties. Scope a search with the `corpusType` filter, and call `/us/statutes/coverage` for the live jurisdiction-by-corpusType list. - **Search**: Search across all USC, CFR, state, and regulatory sections - **Section**: Get metadata, citation, hierarchy, and source links for a specific section - **Body**: Get the full text of a section - **Enactments**: Which state session laws a publisher's own tables list against a section (supported jurisdictions only, never a complete history) - name: US Session Laws description: >- State session laws: the acts of each legislature as they were enacted, chapter by chapter, before they are folded into a code. A session law is what the governor signs. It carries the act's own text, including the language it strikes and inserts, its approval and effective dates, and, where the publisher prints one, the code sections it changes. That makes it the source for "which act changed this section, and when did it take effect". Every act has a permanent `sessionLawId` (for example `SSL_MN_2025R_G_Y2025_C1`, Minnesota Laws 2025, regular session, chapter 1) whether or not we hold its text, and a citation or bill number such as `S.F.No. 1552` is accepted where an id goes. v1 serves STATE acts only. Federal session laws (the Statutes at Large, `SAL_` ids) are served by `/us/statutes/section`, and `/us/statutes/resolve` points a session-law citation here. **Start here**: check `/us/statutes/coverage` (free) for what we hold per state: each jurisdiction's `sessionLaws` block lists its sessions, which are complete or only partly collected, and the `series` and `instrumentTypes` that exist. Then **List** a session or a date range to get ids, **Get** one act for its record, then **Body** for its text. A law missing from a partly collected session is a free 404 (`session_not_fully_collected`), not proof it does not exist. - **List**: everything enacted in a state's session, approved in a window, or taking effect on a date - **Get**: one act by id or by citation; dates (`effectiveDates` is always a list), sources and the code sections it affects - **Body**: the act's text as printed, paged by cursor, with amendatory markup preserved where the publisher printed it - **Batch**: up to 50 ids or citations in one call, the same record as Get, billed per law served, with every miss listed and its reason - **Changes**: a sync feed of the registry over an integer cursor (`sinceId`): what began to be served, was corrected, withdrawn or merged The reverse link, from a code section to the acts a publisher's own tables list against it, is `GET /us/statutes/section/{actId}/enactments`. - name: Board Watches description: >- Law-change alerts. Subscribe to a **board** (a tracked corpus source, identified by `corpusType` plus an optional `state`) and get a webhook or email whenever it refreshes with real changes, naming the exact sections that changed. Fetch old-vs-new text for any amended section via the change diff. Boards refresh on their own existing cadence; watching one does not change how often it refreshes. Every endpoint here is **free**: authenticated by API key and rate-limited, but not credit-metered. See the [Law Change Alerts guide](https://www.vaquill.ai/docs/api-guide/alerts) for the full walkthrough. - name: Pricing description: >- Credit pricing and conversion rates. No authentication required. 1 credit = $0.01 USD. - name: Credits description: >- Your own credit balance: what is spendable right now, where it came from, and what is about to expire. Free and never charged, so it is safe to poll for low-balance alerting or to pre-flight a batch job. externalDocs: description: Full API Reference url: https://www.vaquill.ai/docs/api-reference/ paths: /api/v1/boards: get: tags: - Board Watches summary: List watchable boards description: >- List every board (a tracked corpus source, identified by corpusType + state) available to watch. A board's refresh cadence is fixed by what we already track; watching it does not change how often it refreshes. Narrow with `corpusType` and/or `state` when you already know what you want to watch, rather than paging the whole registry: `?corpusType=state_regulation&state=tx` is one board, and `?state=federal` is every federal one. `corpusType` is matched case-insensitively, and `state=federal` selects the boards that have no state. `total` is the number of boards matching your filters BEFORE paging, and `hasMore` is true when another page exists, matching the paging contract on `/us/statutes/search` and the change feeds. `lastRetrievedAt` says when we last pulled that source from its publisher, and `retrievalStatus` says whether we are still polling it. Read them together with `cadence` before treating silence on a watch as 'nothing changed'. `publishesSourceChangedOn` says whether this board's change events can carry the publisher's own date for a change. It is false on most boards, and there it means the date is never present rather than sometimes missing, so check it before writing code that waits for `sourceChangedOn` to appear. True today on `cfr` only. **Free.** Requires an API key and is rate-limited, but costs no credits. operationId: list_boards_api_v1_boards_get parameters: - name: corpusType in: query required: false schema: anyOf: - type: string - type: 'null' description: >- Only boards for this corpus type, matched case-insensitively so the uppercase spelling used by the statutes endpoints (`CFR`) finds the board (`cfr`). An unknown value is an empty page with `total: 0`, not an error. examples: - state_regulation title: Corpustype description: >- Only boards for this corpus type, matched case-insensitively so the uppercase spelling used by the statutes endpoints (`CFR`) finds the board (`cfr`). An unknown value is an empty page with `total: 0`, not an error. - name: state in: query required: false schema: anyOf: - type: string enum: - federal - al - ak - as - az - ar - ca - co - ct - de - dc - fl - ga - gu - hi - id - il - in - ia - ks - ky - la - me - md - ma - mi - mn - ms - mo - mt - ne - nv - nh - nj - nm - ny - nc - nd - mp - oh - ok - or - pa - pr - ri - sc - sd - tn - tx - ut - vt - vi - va - wa - wv - wi - wy - type: 'null' description: >- Only boards for this jurisdiction. Pass `federal` for the boards that have no state (USC, eCFR, the Federal Register). Omit for no jurisdiction filter -- which is NOT the same as `federal`. examples: - tx title: State description: >- Only boards for this jurisdiction. Pass `federal` for the boards that have no state (USC, eCFR, the Federal Register). Omit for no jurisdiction filter -- which is NOT the same as `federal`. - name: limit in: query required: false schema: type: integer maximum: 500 minimum: 1 description: >- Max boards to return. The default covers the whole registry today; check `total` rather than assuming it always will. default: 500 title: Limit description: >- Max boards to return. The default covers the whole registry today; check `total` rather than assuming it always will. - name: offset in: query required: false schema: type: integer minimum: 0 description: Number of boards to skip, for paging. default: 0 title: Offset description: Number of boards to skip, for paging. responses: '200': description: The list of watchable boards. content: application/json: schema: {} example: data: boards: - corpusType: state state: wa label: Washington statutes cadence: weekly lastRetrievedAt: '2026-08-16T19:35:23.038075+00:00' retrievalStatus: current publishesSourceChangedOn: false changeSignal: continuous - corpusType: federal_register label: Federal Register cadence: daily lastRetrievedAt: '2026-08-17T06:10:09.637043+00:00' retrievalStatus: current publishesSourceChangedOn: false changeSignal: continuous total: 216 hasMore: false meta: processingTimeMs: 12.4 creditsConsumed: 0 '401': description: Invalid or missing API key. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' '403': description: API key lacks `research:read` scope. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '429': description: Rate limit exceeded. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' components: schemas: ApiDetailError: properties: detail: type: string title: Detail description: >- Human-readable reason, safe to surface to an end user. Branch on the HTTP status rather than on this string: the wording is not part of the contract and may be reworded, but 401 (bad key), 402 (out of credits), 403 (missing scope), 404 (no such resource) and 429 (rate limited) are stable. examples: - Insufficient API credits. errors: anyOf: - items: $ref: '#/components/schemas/ApiFieldError' type: array - type: 'null' title: Errors description: 'Present on 422 only: every field that failed validation.' type: object required: - detail title: ApiDetailError description: >- Error envelope the API actually returns. Every error (400/401/402/403/404/405/422/429/5xx) carries a `detail` string, e.g. `{"detail": "Insufficient API credits."}`, on every mount of the API. A 422 adds `errors`, one entry per rejected field. Some 404s add endpoint-specific diagnosis beside `detail` (the statutes section routes add `actId`, `reason` and `didYouMean`); treat unknown keys as optional. HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ApiFieldError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Loc description: >- Where the bad value is: `body`, `query` or `path`, then the parameter name exactly as you send it (camelCase), then list indexes. A bare `["body"]` means the body as a whole was not a JSON object. examples: - - body - corpusType msg: type: string title: Msg description: What is wrong with the value, in plain English. examples: - Input should be 'USC', 'CFR' or 'STATE' type: type: string title: Type description: >- Machine-readable error kind, e.g. `missing`, `literal_error`, `json_invalid`. examples: - literal_error type: object required: - loc - msg - type title: ApiFieldError description: One rejected field in a 422 response. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: vq_key_* description: >- API key issued from the developer dashboard. Pass as `Authorization: Bearer vq_key_...` (preferred). ApiKeyHeader: type: apiKey in: header name: X-API-Key description: >- The same API key as a bare header value: `X-API-Key: vq_key_...`. Equivalent to the Bearer form. ApiKeyQuery: type: apiKey in: query name: api_key description: >- The same API key as a query parameter: `?api_key=vq_key_...`. Use only where you cannot set a header. A URL can end up in proxy and server logs, browser history and shared links, so prefer either header form, and rotate a key that has leaked. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.