> ## Documentation Index > Fetch the complete documentation index at: https://docs.textsetu.com/llms.txt > Use this file to discover all available pages before exploring further. # Start a merge — detect conflicts (write) > Begin merging the branch into main. This recomputes and records conflicts against main's current state and reports how many changes will auto-merge. Resolve any returned conflicts, then call merge/complete — see the [branching guide](/docs/guides/branches). **Constraints:** - When the project requires merge approval, personal tokens need the approve permission and machine (project) tokens are rejected. ## OpenAPI ````yaml /openapi/textsetu.json post /projects/{projectId}/branches/{branchId}/merge/start openapi: 3.1.0 info: title: TextSetu API version: 1.2.0 description: >- Public REST API for TextSetu. Authenticate with a Personal Access Token (tsu_pat_…) or a project token (tsu_proj_…) via the `Authorization: Bearer ` header. **Authorization is permission-based.** Every token carries an explicit allow-list of RBAC permission keys (e.g. `translation_read`), and each endpoint declares the permission it requires (`x-permission`). A token's effective access is its underlying authority ∩ its allow-list — a PAT is further bounded by its owner's role-based permissions, so it can only narrow, never exceed, what the owner already has. A project token is bound to a single project. There are no coarse read/write/manage scopes. **Response envelope.** Every endpoint returns `{ "success": true, "data": … }` on success and `{ "success": false, "error": { "code", "message" } }` on failure. **Rate limit.** 600 requests/minute, keyed by token (or by IP when unauthenticated). Exceeding it returns 429 with the standard error envelope. servers: - url: https://api.textsetu.com/api/v1 description: Production - url: /api/v1 description: This server (self-hosted / same-origin) security: - bearerAuth: [] tags: - name: Projects description: >- Read project metadata — settings, key separator, and the approval/branching flags that shape how the other endpoints behave. - name: Languages description: >- List and manage a project's target languages. Each language is referenced by its BCP-47 code; the source language is flagged separately. - name: Translations description: >- Manage a project's translations: create, read, update, and delete translation keys — the identifiers your app looks up, carrying metadata (description, tags, screenshot) — and set the translated value for a key in a given language. Value writes honor the project's approval workflow — non-approver writes land as `pending_review`. - name: Stats description: >- Per-language completeness and approval progress for a project — the numbers behind the dashboard. - name: Import/Export description: >- Bulk-load source files into a project or export the current translations. Supports the same file formats as the web app. - name: Branches description: >- Work on translations in isolation and merge them back. Branch reads/writes mirror the main endpoints but stage changes as a diff until merge. See the [branching guide](/docs/guides/branches). - name: Glossary description: >- Manage term bases — approved terminology and its translations — and check a string against them. See the [glossary guide](/docs/guides/glossary). - name: Translation Memory description: >- Reusable translation stores. Fuzzy-match and concordance-search prior translations to reuse them. See the [translation memory guide](/docs/guides/translation-memory). - name: AI description: >- Machine-translate a project with the org's configured AI engine (brand voice, glossary/TM grounding, and an optional review pass). Runs asynchronously — start a run and poll the returned `jobId`. - name: Webhooks description: >- Get notified when a project's translations change, instead of polling. Register an HTTPS endpoint, subscribe it to the events you care about, and TextSetu POSTs a signed payload whenever one occurs. Payloads follow the [Standard Webhooks](https://www.standardwebhooks.com) spec — verify the `webhook-signature` header with any compatible library. Delivery is at-least-once and unordered, so treat `webhook-id` as an idempotency key. Failed deliveries are retried five times over roughly seven hours, and every attempt is inspectable and replayable via the delivery log. - name: Meta description: Service-level and cross-cutting endpoints. paths: /projects/{projectId}/branches/{branchId}/merge/start: post: tags: - Branches summary: Start a merge — detect conflicts (write) description: >- Begin merging the branch into main. This recomputes and records conflicts against main's current state and reports how many changes will auto-merge. Resolve any returned conflicts, then call merge/complete — see the [branching guide](/docs/guides/branches). **Constraints:** - When the project requires merge approval, personal tokens need the approve permission and machine (project) tokens are rejected. parameters: - name: projectId in: path required: true schema: type: string description: Project id (UUID) or id-embedded path slug. - name: branchId in: path required: true schema: type: string description: Translation branch id (UUID). responses: '200': description: Detected conflicts plus the auto-mergeable count. content: application/json: schema: type: object required: - success - data properties: success: type: boolean const: true data: type: object properties: conflicts: type: array items: type: object properties: id: type: string description: >- Unique conflict id (UUID) — pass this to the resolve endpoint. examples: - c1a2b3d4-0000-4000-8000-000000000009 branchId: type: string description: Id of the branch this conflict belongs to. examples: - b1a2c3d4-0000-4000-8000-000000000001 conflictType: type: string description: >- Kind of conflict: `value` (both sides changed the same value), `key_deleted_on_main` (branch edits a key deleted on main), or `key_name_collision` (branch adds a key name that now exists on main). examples: - value keySnapshot: type: string description: >- The key name captured at conflict-detection time. examples: - checkout.summary.total languageCode: anyOf: - type: string - type: 'null' description: >- Language of the conflicting value; `null` for key-level conflicts. examples: - fr baseValue: anyOf: - type: string - type: 'null' description: >- The common-ancestor value both sides diverged from, if known. examples: - Total mainValue: anyOf: - type: string - type: 'null' description: The current value on main. examples: - Total amount branchValue: anyOf: - type: string - type: 'null' description: The value proposed by the branch. examples: - Montant total resolution: anyOf: - type: string - type: 'null' description: >- Chosen resolution: `main`, `branch`, or `custom`; `null` until resolved. examples: - null resolvedValue: anyOf: - type: string - type: 'null' description: >- The final value once resolved (the `customValue` when resolution is `custom`). examples: - null required: - id - branchId - conflictType - keySnapshot - languageCode - baseValue - mainValue - branchValue - resolution - resolvedValue additionalProperties: false description: >- Conflicts that must be resolved before the merge can complete (empty if none). autoMergeableCount: type: integer description: >- Number of changes that will merge cleanly without manual resolution. examples: - 17 required: - conflicts - autoMergeableCount additionalProperties: false '400': description: Branch does not belong to this project. '403': description: >- Merge not permitted (missing approval permission or a machine token). '404': description: Project or branch not found. components: securitySchemes: bearerAuth: type: http scheme: bearer description: >- API token: tsu_pat_… (PAT) or tsu_proj_… (project token). The token's granted RBAC permissions determine access; see each operation's `x-permission`. ````