> ## Documentation Index > Fetch the complete documentation index at: https://docs.canary.effectiveai.app/llms.txt > Use this file to discover all available pages before exploring further. # Read an extracted objection letter > Read filing context and a bounded chunk of existing letter text. Individual issues remain within the letter text; no issue identities are assigned. Uses Unicode character offsets and a content revision, not file/page/version provenance. Missing text returns null with textAvailability=unavailable. Re-extraction may replace the record (404); rediscover using filingId. Changed text on the same record invalidates its cursor. Read-only and safe to retry; no source acquisition or extraction is started. ## OpenAPI ````yaml /openapi.json get /filing-objections/{objectionId} openapi: 3.0.3 info: title: Effective API version: 2.0.0 description: The public Effective REST API. Authenticate using an Effective API key. servers: - url: https://canary.effectiveai.app/api/v2 description: Canary security: - bearerAuth: [] paths: /filing-objections/{objectionId}: get: tags: - Filing objections summary: Read an extracted objection letter description: >- Read filing context and a bounded chunk of existing letter text. Individual issues remain within the letter text; no issue identities are assigned. Uses Unicode character offsets and a content revision, not file/page/version provenance. Missing text returns null with textAvailability=unavailable. Re-extraction may replace the record (404); rediscover using filingId. Changed text on the same record invalidates its cursor. Read-only and safe to retry; no source acquisition or extraction is started. operationId: readFilingObjection parameters: - schema: type: string format: uuid required: true name: objectionId in: path - schema: type: integer minimum: 1 maximum: 20000 default: 4000 description: >- Maximum Unicode code points of letter text per response: 1–20000, default 4000. Repeat unchanged with cursor. Offsets are characters, not UTF-8 bytes or UTF-16 units. required: false description: >- Maximum Unicode code points of letter text per response: 1–20000, default 4000. Repeat unchanged with cursor. Offsets are characters, not UTF-8 bytes or UTF-16 units. name: maxCharacters in: query - schema: type: string minLength: 1 maxLength: 128 required: false name: cursor in: query responses: '200': description: >- Letter context and revision-bound text, or explicitly unavailable text. content: application/json: schema: $ref: '#/components/schemas/V2FilingObjectionRead' '400': description: >- invalid_request or invalid_cursor. Restart without cursor after expiry, a changed query/scope, or changed letter text. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '401': description: Authentication required. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '403': description: SERFF read permission required. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '404': description: >- Letter record missing, inaccessible or replaced by re-extraction. Rediscover with filingId. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '500': description: Unexpected server error. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' '503': description: >- Dependency unavailable. Retry the same request after Retry-After seconds. content: application/json: schema: $ref: '#/components/schemas/V2CodedError' security: - bearerAuth: [] components: schemas: V2FilingObjectionRead: allOf: - $ref: '#/components/schemas/V2FilingObjection' - type: object properties: text: type: string nullable: true maxLength: 40000 description: >- Bounded existing letter text, including its individual issues as written. Null for missing/blank extraction or a known missing-attachment placeholder. textRevision: type: string nullable: true description: >- Opaque text-content revision. Not an original-file version. Changed text invalidates continuation. location: type: object nullable: true properties: startOffsetCharacters: type: integer minimum: 0 endOffsetCharacters: type: integer minimum: 0 totalCharacters: type: integer minimum: 0 required: - startOffsetCharacters - endOffsetCharacters - totalCharacters description: >- Zero-based Unicode code-point offsets, end exclusive. Null when text is unavailable. nextCursor: type: string nullable: true description: >- Continue the same letter with unchanged maxCharacters, or null at exhaustion/unavailability. Fixed 24-hour expiry. required: - text - textRevision - location - nextCursor V2CodedError: allOf: - $ref: '#/components/schemas/V2Error' - type: object properties: code: type: string minLength: 1 description: Stable error code. Clients must tolerate unknown future codes. details: type: array items: type: object properties: location: type: string enum: - path - query - header - body path: type: array items: type: string maxLength: 64 maxItems: 12 code: type: string enum: - required - invalid_type - invalid_value - unknown_field message: type: string minLength: 1 maxLength: 200 required: - location - path - code - message minItems: 1 maxItems: 20 description: Bounded safe validation issues; may omit some invalid fields. requestId: type: string minLength: 1 maxLength: 128 description: >- Existing server correlation for this HTTP attempt, when available. required: - code V2FilingObjection: type: object properties: id: type: string format: uuid description: >- Identity of an extracted letter record, not an individual issue. Re-extraction may replace it; rediscover with filingId after a 404. filing: $ref: '#/components/schemas/V2FilingSummary' objectionDate: type: string nullable: true format: date description: Extracted letter submission date, when known. reviewerName: type: string nullable: true textAvailability: type: string enum: - available - unavailable required: - id - filing - objectionDate - reviewerName - textAvailability V2Error: type: object properties: error: type: string minLength: 1 description: Human-readable explanation of the failure. required: - error V2FilingSummary: type: object properties: id: type: string format: uuid source: type: string sourceReference: type: string state: type: string companyName: type: string nullable: true carrierIds: type: array nullable: true items: type: string groupId: type: string nullable: true productName: type: string nullable: true typeOfInsurance: type: string nullable: true subTypeOfInsurance: type: string nullable: true toiCode: type: string nullable: true subToiCode: type: string nullable: true filingType: type: string nullable: true sourceStatus: type: string nullable: true submissionDate: type: string nullable: true format: date dispositionDate: type: string nullable: true format: date required: - id - source - sourceReference - state - companyName - carrierIds - groupId - productName - typeOfInsurance - subTypeOfInsurance - toiCode - subToiCode - filingType - sourceStatus - submissionDate - dispositionDate securitySchemes: bearerAuth: type: http scheme: bearer description: 'Effective API key. Send Authorization: Bearer sk-eai-...' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.