> ## 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. # Coverage matrix by jurisdiction and corpusType > Self-describing coverage matrix. Returns a legend of every `corpusType` token (what it contains and whether it is federal or state-scoped) plus, for each jurisdiction, the per-corpusType ingested chunk counts in `corpora`. Use it to learn exactly what is queryable where before calling /statutes/search: read a jurisdiction's `corpora` keys, then pass one as `corpusType` (paired with `state` for state-scoped corpora). **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/statutes/coverage openapi: 3.1.0 info: title: Vaquill Developer API description: >- Public API for legal statutes and legislation. **Authentication**: Pass your API key via the `Authorization: Bearer vq_key_...` header. **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, CFR, nearly all 50 state statutory codes (plus DC and Puerto Rico), state constitutions, and court rules. | `US` | See the full [Coverage page](https://www.vaquill.ai/docs/coverage) for the jurisdiction-by-jurisdiction breakdown, or call `/statutes/states` for live counts. ## Endpoints - **US Statutes**: Search and retrieve USC, CFR, state statutes, constitutions, court rules, executive orders, and regulations with full text - **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 | |---|---|---|---| | API ($199/mo, 1x) | 30 | 500 | 2,000 | | API Business ($1,000/mo, 5x) | 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: [] tags: - name: US Statutes description: >- Search and retrieve US statutes. Covers the United States Code (USC), Code of Federal Regulations (CFR), all 50 state statutes, constitutions, court rules, executive orders, Federal Register agency rules, agency guidance, and state regulations. Scope a search with the `corpusType` filter. - **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 - name: Pricing description: >- Credit pricing and conversion rates. No authentication required. 1 credit = $0.01 USD. externalDocs: description: Full API Reference url: https://www.vaquill.ai/docs/api-reference/ paths: /api/v1/statutes/coverage: get: tags: - US Statutes summary: Coverage matrix by jurisdiction and corpusType description: >- Self-describing coverage matrix. Returns a legend of every `corpusType` token (what it contains and whether it is federal or state-scoped) plus, for each jurisdiction, the per-corpusType ingested chunk counts in `corpora`. Use it to learn exactly what is queryable where before calling /statutes/search: read a jurisdiction's `corpora` keys, then pass one as `corpusType` (paired with `state` for state-scoped corpora). **Free.** Requires an API key and is rate-limited, but costs no credits. operationId: list_statutes_coverage_api_v1_statutes_coverage_get responses: '200': description: Coverage legend plus per-jurisdiction corpusType counts. content: application/json: schema: {} example: data: corpusTypes: - token: USC description: United States Code (federal statutes) scope: federal - token: REGULATION description: State administrative regulations scope: state jurisdictions: - code: federal name: Federal (USC + CFR) kind: federal sectionCount: 812553 hasData: true corpora: CFR: 491612 USC: 212042 FEDERAL_REGISTER: 102861 EXECUTIVE_ACTION: 3599 AGENCY_GUIDANCE: 2510 FEDERAL_RULES: 526 CONSTITUTION: 74 - code: wa name: Washington kind: state sectionCount: 140326 hasData: true corpora: STATE: 89005 REGULATION: 51142 STATE_CONSTITUTION: 179 totalSections: 2937552 stateCountWithData: 49 meta: processingTimeMs: 5401.2 creditsConsumed: 0 '401': description: Invalid or missing API key. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' example: detail: Invalid or missing API key. '403': description: API key lacks `research:read` scope. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' '429': description: Rate limit exceeded. content: application/json: schema: $ref: '#/components/schemas/ApiDetailError' components: schemas: ApiDetailError: properties: detail: type: string title: Detail examples: - Insufficient API credits. type: object required: - detail title: ApiDetailError description: |- Error envelope the API actually returns. All errors (401/402/403/404/422/429/5xx) come back as a single `detail` string (FastAPI default), e.g. `{"detail": "Insufficient API credits."}`. Documenting the real shape so client code can rely on it. securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: vq_key_* description: >- API key issued from the Vaquill developer dashboard. Pass as `Authorization: Bearer vq_key_...` ````