> ## Documentation Index > Fetch the complete documentation index at: https://docs.pinecone.io/llms.txt > Use this file to discover all available pages before exploring further. # Fork a context (copy manifest into a fresh target) > Copies the source context's manifest and lifecycle metadata onto an **already-created** target context in the same project, so the target's query and curate gates pass. It does not create the target — create it first with `POST /contexts`. The target's index stays empty until curated. The source must have been optimized (`last_optimized_at` set) and must not be optimizing. ## OpenAPI ````yaml https://raw.githubusercontent.com/pinecone-io/pinecone-api/refs/heads/main/2026-07/nexus_2026-07.oas.yaml POST /contexts/{slug}/fork openapi: 3.0.3 info: title: Nexus API contact: name: Pinecone Support url: https://support.pinecone.io email: support@pinecone.io license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0 version: 2026-07 description: > Nexus turns a set of sources into a queryable, self-improving knowledge base. A context is **sources + a manifest**: upload sources, **curate** them into a searchable index (curate is explicit — there is no auto-curate), and then query the context. The manifest (a single validated JSON document) defines how the context indexes, retrieves, and answers. Conventions: * The `{slug}` path parameter accepts the URL-safe context slug **or** its UUID. * Contexts return a `ContextResponse` (derived flags), not the raw persisted model. Tasks return a `TaskResponse`. * Querying is the unified KnowQL Query API: `POST /api/query` runs one turn (`ask` in, answer out); multi-turn conversations are **sessions** (`GET/DELETE /api/sessions`, `GET /api/queries/{id}`). Read the answer from `output[].content[].text`. * Tasks are a top-level, project-owned resource at `/api/tasks` — they are no longer nested under contexts. Active workflow types are `optimize`, `curate`, `search`, `search_cc`, `search_rag`, `explore`, `profile`, `import`, `pack`, `restore`. servers: - url: https://{host}/api description: Your Nexus deployment host variables: host: default: api.example.com security: - bearerAuth: [] - apiKey: [] tags: - name: Auth description: Login and identity. - name: Project description: The active Pinecone project and its disclosure state. - name: Contexts description: A context is sources + a manifest. Curate it explicitly before querying. - name: Manifest description: Manifest templates and the per-context manifest. - name: Source Files description: >- Per-context source imports (upload, connector, public repo) and the source file tree. - name: Knowledge description: Read-only browse of curated knowledge (chunks + artifacts). - name: Curation description: Curate workflow trigger, curation ledger, and version-pin primitives. - name: Connectors description: >- Project-level links to external source providers (Box, ...). Linked via OAuth or an API key, then used to import source documents into a context. - name: Query description: >- The unified KnowQL Query API: run a query turn (`/query`), fetch a turn (`/queries/{id}`), inspect its trace, manage feedback, comparison flags, and multi-turn sessions (`/sessions`). - name: Tasks description: >- Top-level, project-owned task records for every workflow (optimize, curate, search, work, explore, profile, import, pack, restore, groom). - name: Task Files description: Read, list, and delete files from live or archived task containers. paths: /contexts/{slug}/fork: parameters: - $ref: '#/components/parameters/ContextSlug' - $ref: '#/components/parameters/ApiVersionHeader' post: tags: - Contexts summary: Fork a context (copy manifest into a fresh target) description: >- Copies the source context's manifest and lifecycle metadata onto an **already-created** target context in the same project, so the target's query and curate gates pass. It does not create the target — create it first with `POST /contexts`. The target's index stays empty until curated. The source must have been optimized (`last_optimized_at` set) and must not be optimizing. operationId: fork_context requestBody: required: true content: application/json: schema: type: object required: - target_slug properties: target_slug: type: string description: Slug or UUID of an existing context in the same project responses: '200': description: Forked content: application/json: schema: type: object required: - success properties: success: type: boolean '400': description: Source and target are the same context '404': description: Source or target context not found '409': description: Source is optimizing, or has never been optimized components: parameters: ContextSlug: name: slug in: path required: true schema: type: string description: Context slug or UUID. ApiVersionHeader: in: header name: X-Pinecone-Api-Version description: >- Date-based contract version. Omit to resolve to the Nexus default version (`2026-07`, the oldest served version); send `unstable` for the in-development surface. The resolved version is echoed back on the same header. A present-but-unrecognized value is rejected with `400 unsupported_api_version`. required: false style: simple schema: type: string default: 2026-07 x-enum: - 2026-07 - unstable securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: >- Session token from POST /auth/login. Pass as `Authorization: Bearer `. The alternative `X-Pinecone-Api-Key` header is also accepted for direct-key auth (used by the Nexus CLI on first contact). apiKey: type: apiKey in: header name: X-Pinecone-Api-Key description: Pinecone API key, accepted as an alternative to the bearer JWT. ````