> ## Documentation Index > Fetch the complete documentation index at: https://docs.runaether.dev/llms.txt > Use this file to discover all available pages before exploring further. # Get a pull request's changed files with unified-diff patches > Fetched live from GitHub at request time; nothing is persisted. patch is absent when GitHub provides none (binary or oversized files). truncated is true when the listing hit GitHub's 3000-file cap. expected_head is optional and pins the answer to one commit: GitHub computes this listing against the pull request's head at request time, so the head the mirror holds is compared after the walk and a head that has moved is a 409 rather than the file list of a different commit. Pass it when the patches will be paired with file content read at that same commit; omit it to read whatever the head is now. Requires membership in the owning organization of a task linked to this pull request — the task that published it or a task that reviewed it — and current GitHub access to the repository. 404 covers an unknown pull request, one linked to no organization the caller belongs to, and one whose GitHub access the caller has lost; the three are deliberately indistinguishable. ## OpenAPI ````yaml api-reference/openapi.account.json GET /pull-requests/{pullRequestID}/github/pr/diff openapi: 3.1.0 info: title: Aether Account & Integrations API version: 0.1.0 description: >- Account, billing, and integration-management endpoints used by the Aether web app and CLI. Root-mounted; NOT part of the versioned /v1 contract. servers: - url: https://api.runaether.dev security: - bearerAuth: [] paths: /pull-requests/{pullRequestID}/github/pr/diff: get: tags: - pull-requests summary: Get a pull request's changed files with unified-diff patches description: >- Fetched live from GitHub at request time; nothing is persisted. patch is absent when GitHub provides none (binary or oversized files). truncated is true when the listing hit GitHub's 3000-file cap. expected_head is optional and pins the answer to one commit: GitHub computes this listing against the pull request's head at request time, so the head the mirror holds is compared after the walk and a head that has moved is a 409 rather than the file list of a different commit. Pass it when the patches will be paired with file content read at that same commit; omit it to read whatever the head is now. Requires membership in the owning organization of a task linked to this pull request — the task that published it or a task that reviewed it — and current GitHub access to the repository. 404 covers an unknown pull request, one linked to no organization the caller belongs to, and one whose GitHub access the caller has lost; the three are deliberately indistinguishable. operationId: getPullRequestGithubPRDiff parameters: - in: path name: pullRequestID required: true schema: format: uuid type: string - explode: false in: query name: expected_head schema: pattern: ^[0-9a-f]{40}$ type: string responses: '200': content: application/json: schema: additionalProperties: false properties: files: items: $ref: '#/components/schemas/PRReviewDiffFile' type: array total_files: format: int64 minimum: 0 type: integer truncated: type: boolean required: - files - total_files - truncated type: object description: OK '401': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Unauthorized '403': content: application/json: schema: anyOf: - $ref: '#/components/schemas/ErrorResponse' - $ref: '#/components/schemas/OrgAuthorizationErrorResponse' description: Forbidden '404': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Not Found '409': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Conflict '422': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Unprocessable Entity '500': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Internal Server Error '502': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Bad Gateway '503': content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' description: Service Unavailable components: schemas: PRReviewDiffFile: additionalProperties: false properties: additions: format: int64 minimum: 0 type: integer category: $ref: '#/components/schemas/PRReviewFileCategory' deletions: format: int64 minimum: 0 type: integer patch: type: string path: type: string previous_path: type: string status: $ref: '#/components/schemas/PRReviewDiffFileStatus' required: - path - status - category - additions - deletions type: object ErrorResponse: additionalProperties: false properties: code: type: string error: minLength: 1 type: string errors: items: $ref: '#/components/schemas/ErrorDetail' type: array required: - error type: object OrgAuthorizationErrorResponse: additionalProperties: false properties: code: enum: - org_membership_required - org_role_insufficient - org_suspended - account_deleting type: string error: minLength: 1 type: string required: - error - code type: object PRReviewFileCategory: enum: - implementation - tests - documentation - generated type: string PRReviewDiffFileStatus: enum: - added - removed - modified - renamed - copied - changed - unchanged type: string ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object securitySchemes: bearerAuth: bearerFormat: JWT scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.