> ## Documentation Index > Fetch the complete documentation index at: https://code.storage/docs/llms.txt > Use this file to discover all available pages before exploring further. # Repo: Update > Change the default branch of the repository identified by the JWT `repo` claim. The gateway reads the current `HEAD` symbolic ref, then repoints it at the requested branch through a transactional compare-and-swap against that value, and finally records the new default branch in the repository row. Branch names are fully qualified for you: `main` is written as the symref target `refs/heads/main`, and a value that already starts with `refs/` is used verbatim. The branch itself is not created by this call. #### JWT claims Required scopes: `repo:write` Requires per repo scope: Yes ## OpenAPI ````yaml openapi.json PATCH /api/repos/{repo_name} openapi: 3.1.0 info: description: >- The Code Storage HTTP API exposes repository management, Git reads, and write workflows over plain HTTPS. ## Authentication Send a signed JWT in the `Authorization: Bearer ` header on every request. - Organisation-scoped endpoints such as `GET /api/repos` require organisation scopes like `org:read` - Repository-scoped endpoints require a JWT whose `repo` claim names the target repository - Write operations require the relevant scope such as `git:write` or `repo:write` ## Pagination List endpoints use cursor-based pagination. - `cursor` is an opaque token returned by the previous response - `limit` defaults to `20` and is capped per endpoint - `has_more` tells you whether another request is available - `next_cursor` becomes the next `cursor` value ## Paths Preferred routes use the shorter `/api/...` form. Legacy `/api/v1/...` aliases remain documented where they are still supported and are marked as deprecated when a preferred route exists. ## Repository names in paths - Names containing `/` (or any other character that is not safe in a URL path segment) **must** be URL encoded so the value occupies a single path segment. For example, `pierre/example` becomes `pierre%2Fexample` and the request URL is `/api/repos/pierre%2Fexample/...`. - Plain names that contain only URL-safe characters can be sent as-is: `/api/repos/dotfiles/...`. - The server URL-decodes the value before resolving the repository, so double-encoding is not required. ## Errors Most endpoints return RFC 9457-compatible problem details under `application/problem+json`, with a legacy `error` field mirrored from `detail`. Each problem body has a stable, snake_case `code`. Branch on `code`, not on `detail`. The Error codes section lists the values. A `429 Too Many Requests` response carries the current IETF `RateLimit` service-limit field and `Retry-After`. `RateLimit` reports immediately available quota (`r`) and its effective window in seconds (`t`); `Retry-After` is the minimum delay and takes precedence. The gateway's capacity is dynamic, so it does not advertise a fixed `RateLimit-Policy` on successful responses. Streaming commit and note workflows may return operation-specific failure bodies so callers can inspect partial results, branch state, or workflow status without parsing generic error strings. ## Error codes Each problem body has a stable `code`. Each status has a generic code. A specific code replaces it when the caller must take a different action. New codes can be added. Treat an unknown code as the generic code for its status. Generic codes: `bad_request` (400), `unauthorized` (401), `forbidden` (403), `not_found` (404), `method_not_allowed` (405), `request_timeout` (408), `conflict` (409), `precondition_failed` (412), `payload_too_large` (413), `unprocessable_entity` (422), `rate_limited` (429), `request_canceled` (499), `internal_error` (500), `not_implemented` (501), `bad_gateway` (502), `service_unavailable` (503), `gateway_timeout` (504). Any other status uses its status text in snake_case. Specific codes: - `authentication_unavailable` (403): the server cannot verify credentials now; retry. - `insufficient_scope` (403): the token does not have a scope that the operation requires. - `repo_claim_missing` (400): the token has no `repo` claim. - `repo_name_mismatch` (400): the request `repo_name` does not match the token `repo` claim. - `route_not_found` (404): no API route matches the path. - `repository_not_found` (404): the repository does not exist or the token cannot access it. - `repository_deleted` (409): the repository is already deleted. - `repository_thawing` (409): the repository is being restored from cold storage; retry after `Retry-After`. - `sync_in_progress` (409): an upstream sync is in progress; retry. - `upstream_already_configured` (409): the repository already has an upstream. - `branch_not_found` (404): the branch does not exist. - `ref_not_found` (404): the ref or revision does not exist. - `merge_conflict` (409): the merge has file conflicts. - `credential_not_found` (404): the Git credential does not exist. - `credential_exists` (409): the repository already has a Git credential. - `github_app_not_configured` (412): the organization does not have exactly one GitHub App. - `github_repository_inaccessible` (412, or the 4xx status from the upstream): GitHub does not give access to the upstream repository. - `hosting_not_enabled` (403): hosting is not enabled for the organization. - `hosting_project_not_found` (404): the repository has no hosting project. - `deployment_not_found` (404): the deployment does not exist. - `deployment_project_name_in_use` (409): another repository uses the hosting project name. - `idempotency_key_reused` (422): the idempotency key belongs to a different request. title: code.storage version: 1.0.0 servers: - description: Code Storage API host for your organization url: https://api.{org}.code.storage variables: org: default: your-org description: >- The subdomain of your API host. It is usually your organization name. The organization settings page in the dashboard shows your exact API host. security: [] tags: - description: >- Create, inspect, update, delete, and synchronise repositories, including upstream pull-sync and generic HTTPS Git credentials for non-GitHub upstreams. name: Repositories - description: Create, delete, list, and compare branches. name: Branches - description: >- Read commit metadata and diffs, or create commits without a local Git client. name: Commits - description: >- Read repository trees, file contents, archives, and server-side search results. name: Files - description: List, create, and delete Git tags. name: Tags - description: Attach and retrieve Git notes for commits or other Git objects. name: Notes - description: >- Read metadata about the Code Storage deployment that serves your organisation, such as its cloud location and inbound IP addresses. name: Organization paths: /api/repos/{repo_name}: patch: tags: - Repositories summary: Update Repository Settings description: >- Change the default branch of the repository identified by the JWT `repo` claim. The gateway reads the current `HEAD` symbolic ref, then repoints it at the requested branch through a transactional compare-and-swap against that value, and finally records the new default branch in the repository row. Branch names are fully qualified for you: `main` is written as the symref target `refs/heads/main`, and a value that already starts with `refs/` is used verbatim. The branch itself is not created by this call. #### JWT claims Required scopes: `repo:write` Requires per repo scope: Yes operationId: repos-update parameters: - description: >- Repository name. Names that contain `/` or any other character that is not safe in a URL path segment must be URL encoded so the value occupies a single path segment. For example `pierre/example` is sent as `pierre%2Fexample`. Plain names such as `example` can be sent as-is. The server URL-decodes the value before resolving the repository. example: my-demo-repository in: path name: repo_name required: true schema: type: string requestBody: content: application/json: example: default_branch: main schema: $ref: '#/components/schemas/ReposUpdateRequest' description: >- Repository settings to change. `default_branch` is the only supported field and must be a non-empty branch name. required: true responses: '200': content: application/json: example: default_branch: main id: repo_7f2b3d9 repo_id: repo_7f2b3d9 repo_name: pierre/sdk-documentation url: pierre/sdk-documentation schema: $ref: '#/components/schemas/ReposUpdateResponse' description: >- Default branch updated. Returns the repository ID, its URL path, and the branch name now recorded as the default. '400': content: application/json: example: code: bad_request detail: default_branch is required error: default_branch is required instance: /api/repos/my-demo-repository status: 400 title: Bad Request type: about:blank schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: example: code: bad_request detail: default_branch is required error: default_branch is required instance: /api/repos/my-demo-repository status: 400 title: Bad Request type: about:blank schema: $ref: '#/components/schemas/ProblemDetails' description: >- The body could not be decoded as JSON, or `default_branch` was missing or empty. '401': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: Unauthorized '403': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: Forbidden '404': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: >- No repository matching the JWT `repo` claim exists for this organisation. '409': content: application/json: example: code: conflict detail: default branch was modified concurrently, please retry error: default branch was modified concurrently, please retry instance: /api/repos/my-demo-repository status: 409 title: Conflict type: about:blank schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: example: code: conflict detail: default branch was modified concurrently, please retry error: default branch was modified concurrently, please retry instance: /api/repos/my-demo-repository status: 409 title: Conflict type: about:blank schema: $ref: '#/components/schemas/ProblemDetails' description: >- `HEAD` moved between the read and the compare-and-swap, so the update was rejected. Retry the request. '429': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: Too Many Requests headers: RateLimit: description: >- Current IETF service-limit field. `r=0` means no request is immediately available; `t` is the effective window in seconds before capacity is expected to return. schema: type: string Retry-After: description: >- Minimum delay before retrying, expressed as seconds or an HTTP date. This value takes precedence over the `RateLimit` effective window. schema: type: string '500': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: Internal Server Error '503': content: application/json: schema: $ref: '#/components/schemas/ProblemDetails' application/problem+json: schema: $ref: '#/components/schemas/ProblemDetails' description: >- The current `HEAD` value could not be read from storage, so no compare-and-swap was attempted and nothing was changed. security: - bearerAuth: - repo:write components: schemas: ReposUpdateRequest: additionalProperties: false description: Repository settings to patch, such as the default branch. properties: default_branch: description: New default branch name for the Code Storage repository. examples: - main type: string type: object ReposUpdateResponse: additionalProperties: false description: Repository state after applying the patch. properties: default_branch: description: Updated default branch name. examples: - main type: string id: deprecated: true description: 'Deprecated: use repo_name. Stable repository identifier.' examples: - repo_7f2b3d9 type: string repo_id: deprecated: true description: 'Deprecated: use repo_name. Stable repository identifier.' examples: - repo_7f2b3d9 type: string repo_name: description: >- Repository name or path. It can contain a slash. It matches the JWT repo claim. examples: - pierre/sdk-documentation type: string url: deprecated: true description: 'Deprecated: use repo_name. Repository name or path, not a full URL.' examples: - pierre/sdk-documentation type: string required: - repo_id - id - repo_name - url - default_branch type: object ProblemDetails: additionalProperties: false description: >- RFC 9457-compatible problem details payload describing the error response. properties: code: description: >- A stable, machine-readable error code in snake_case. Branch on `code`, not on `detail`. The API description lists the codes. type: string detail: description: >- A human-readable explanation specific to this occurrence of the problem. type: string error: description: Legacy compatibility field mirroring `detail` for older clients. type: string instance: description: >- A URI reference that identifies the specific occurrence of the problem. type: string status: description: >- The HTTP status code generated by the origin server for this occurrence of the problem. format: int64 type: integer title: description: A short, human-readable summary of the problem type. type: string type: description: >- A URI reference that identifies the problem type. `about:blank` indicates the generic HTTP status semantics apply. type: string required: - type - title - status - code type: object securitySchemes: bearerAuth: bearerFormat: JWT description: >- JWT bearer token signed with your organization's registered signing key. There is no OAuth authorization server; you mint tokens yourself and the token's `scopes` claim carries the granted permission scopes. Public scopes: `git:read` (read repository contents), `git:write` (write branches, commits, tags, and notes), `repo:write` (create and manage repositories), `org:read` (list an organization's repositories). Each operation's security requirement names the scopes it requires. See https://code.storage/docs/getting-started/authentication for how to mint tokens. scheme: bearer type: http ````