> ## Documentation Index > Fetch the complete documentation index at: https://docs.dify.ai/llms.txt > Use this file to discover all available pages before exploring further. # Delete Source > Requests deletion of a source and returns the deletion job. For what happens to a deleted source's documents, see [Delete Documents and Sources](/en/api-reference/guides/knowledge-base#delete-documents-and-sources). ## OpenAPI ````yaml /en/api-reference/openapi_service.json delete /knowledge-fs/spaces/{knowledge_base_id}/sources/{source_id} openapi: 3.0.1 info: description: >- REST API for Dify applications and knowledge bases. Application endpoints authenticate with an app API key; knowledge endpoints authenticate with a dataset API key. title: Dify Service API version: 1.0.0 servers: - description: >- Base URL of the Dify Service API. For self-hosted deployments, replace it with your own API base URL. url: https://{api_base_url} variables: api_base_url: default: api.dify.ai/v1 description: Host and path of the API base URL, without the `https://` prefix. security: - ApiKeyAuth: [] tags: - description: Operations related to chat messages and interactions. name: Chat Messages - description: File upload and preview operations. name: Files - description: Operations related to end user information. name: End Users - description: User feedback operations. name: Feedback - description: Operations related to managing conversations. name: Conversations - description: Text-to-Speech and Speech-to-Text operations. name: Audio - description: Operations to retrieve application settings and information. name: Applications - description: Operations related to managing annotations for direct replies. name: Annotations - description: Endpoints for resuming paused workflows that require human input. name: Human Input - description: Operations for executing and managing workflows. name: Workflow Runs - description: Operations related to text generation and completion. name: Completion Messages - description: >- Operations for managing knowledge bases, including creation, configuration, and retrieval. name: Knowledge Bases - description: >- Operations for creating, updating, and managing documents within a knowledge base. name: Documents - description: Operations for managing document chunks and child chunks. name: Chunks - description: >- Operations for managing knowledge base metadata fields and document metadata values. name: Metadata - description: Operations for managing knowledge base tags and tag bindings. name: Tags - description: Operations for retrieving available models. name: Models - description: >- Operations for managing and running knowledge pipelines, including datasource plugins and pipeline execution. name: Knowledge Pipeline - description: Ask a knowledge base a question and stream the answer. name: Queries - description: Inspect what a query retrieved and why. name: Query Records - description: Run a research question in the background and collect its results. name: Research Tasks - description: >- Read the documents in a knowledge base, their files, revisions, and chunks; label documents with metadata. name: Documents and Chunks - description: >- Follow, cancel, or retry indexing, and list the knowledge base's background tasks. name: Indexing Tasks - description: >- Follow the deletion of a document file, a batch of files, or a source until it finishes. name: Deletion Jobs - description: >- Manage the sources that feed a knowledge base, their sync schedules, and their connections. name: Sources - description: >- Sync a source now, import website pages or provider items, and follow, cancel, or retry the runs. name: Source Syncs and Imports - description: >- Read and change the knowledge base's models and retrieval settings, and follow the migration a change starts. name: Settings paths: /knowledge-fs/spaces/{knowledge_base_id}/sources/{source_id}: delete: tags: - Sources summary: Delete Source description: >- Requests deletion of a source and returns the deletion job. For what happens to a deleted source's documents, see [Delete Documents and Sources](/en/api-reference/guides/knowledge-base#delete-documents-and-sources). operationId: deleteSource parameters: - description: >- Knowledge base ID: the last segment of the Service API endpoint shown in the knowledge base's **API Access** dialog (`…/knowledge-fs/spaces/`), and the segment after `/datasets/new/` in the address bar. in: path name: knowledge_base_id required: true schema: format: uuid type: string - description: >- Source ID. From [List Sources](/en/api-reference/sources/list-sources). in: path name: source_id required: true schema: format: uuid type: string - description: >- Required identifier for this deletion request. Repeating the same key and request with the same API key returns the original job with `202`. Reusing the key for a different request, or from another API key, answers `409`. Use printable ASCII characters without leading or trailing whitespace. in: header name: Idempotency-Key required: true schema: maxLength: 255 minLength: 8 type: string - description: >- `cascade` also deletes the documents the source produced. `keep` keeps them: they are hidden while the deletion job runs and come back when it completes, with `source_id` set to `null` and no longer refreshed. Before deleting with `keep`, save the IDs of files with this `source_id` from [List Document Files](/en/api-reference/documents-and-chunks/list-document-files): their `source_id` becomes `null` once the deletion completes. in: query name: documents required: false schema: default: cascade enum: - cascade - keep type: string requestBody: content: application/json: examples: delete: summary: Request Example value: expectedRevision: 8 schema: additionalProperties: false properties: expectedRevision: description: >- The source's current `version` from [List Sources](/en/api-reference/sources/list-sources) or [Get Source](/en/api-reference/sources/get-source). A stale value answers `409` and nothing changes. minimum: 1 type: integer required: - expectedRevision type: object description: >- The normalized request must fit within 32,768 UTF-8 bytes. See [Request Size Limits](/en/api-reference/guides/knowledge-base#request-size-limits). required: true responses: '202': content: application/json: examples: accepted: summary: Response Example value: document_title: null job: checkpoint: requested completed_at: null created_at: '2026-09-06T02:00:00Z' error: null id: b2f1d3e4-5c6a-4b7d-8e9f-0a1b2c3d4e5f knowledge_space_id: 0a9d3c2e-5b6f-4e1a-8c7d-2f3e4a5b6c7d mode: keep progress: null retry_at: null run_state: dispatch_pending target_id: 6f1c2b0e-3d0b-4a5e-9f4c-1c0e6a7b8d90 target_type: source updated_at: '2026-09-06T02:00:00Z' status_url: >- https://api.example.com/v1/knowledge-fs/spaces/8d2c6a1e-5b3f-4c7d-9e01-2a3b4c5d6e7f/deletion-jobs/b2f1d3e4-5c6a-4b7d-8e9f-0a1b2c3d4e5f schema: properties: document_title: description: Always `null` for source deletions. nullable: true type: string job: allOf: - $ref: '#/components/schemas/KnowledgeBaseDeletionJob' description: >- The deletion job. `target_type` is `source`, and `mode` echoes `documents`. status_url: description: >- URL of the deletion job in this API: absolute when the deployment sets `SERVICE_API_URL`, otherwise a path that starts with `/v1/`. The same value is sent in the `Location` response header. type: string type: object description: >- Deletion accepted. `job` describes the background deletion. [Get Source](/en/api-reference/sources/get-source) answers `404` from the moment the deletion is accepted. To confirm that it finished, poll [Get Deletion Job](/en/api-reference/deletion-jobs/get-deletion-job) (the `status_url`) until `run_state` is `completed` or `failed`. headers: Location: description: The same URL as `status_url`. schema: type: string '400': content: application/json: examples: knowledge_fs_invalid_request: summary: knowledge_fs_invalid_request value: code: knowledge_fs_invalid_request message: Agent Knowledge Base request is invalid. status: 400 violations: - field: - expectedRevision type: missing knowledge_fs_invalid_request_path: summary: knowledge_fs_invalid_request (path ID) value: code: knowledge_fs_invalid_request message: Agent Knowledge Base request is invalid. status: 400 knowledge_fs_invalid_request_upstream: summary: knowledge_fs_invalid_request (malformed ID) value: code: knowledge_fs_invalid_request failure: category: validation code: KNOWLEDGE_FS_INVALID_REQUEST message: The Agent Knowledge Base request is invalid. retryPolicy: never traceId: 5e2a9c17-3b4d-4f60-8a1b-2c3d4e5f6a7b message: The Agent Knowledge Base request is invalid. status: 400 description: >- - `knowledge_fs_invalid_request`: `Idempotency-Key` is missing, outside 8 to 255 characters, not printable ASCII, or padded with whitespace, `documents` is not `cascade` or `keep`, `expectedRevision` is missing or below 1, or the body or query string carries an unknown key. `violations` names each failing field. - `knowledge_fs_invalid_request`: `source_id` is not a UUID. - `knowledge_fs_invalid_request`: `source_id` is malformed. '401': content: application/json: examples: knowledge_fs_invalid_credential: summary: knowledge_fs_invalid_credential value: code: knowledge_fs_invalid_credential message: Invalid Agent Knowledge Base service credential. status: 401 unauthorized: summary: unauthorized value: code: unauthorized message: Access token is invalid status: 401 description: >- - `unauthorized`: the `Authorization` header is missing, or the key is unknown or not a knowledge base API key. - `knowledge_fs_invalid_credential`: the key is valid, but no knowledge base with this ID exists in the key's workspace, or the key is not tied to a workspace. '403': content: application/json: examples: forbidden: summary: forbidden (rate limit) value: code: forbidden message: >- Sorry, you have reached the knowledge base request rate limit of your subscription. status: 403 knowledge_fs_access_denied: summary: knowledge_fs_access_denied (key scope) value: code: knowledge_fs_access_denied message: Agent Knowledge Base operation is not allowed. status: 403 knowledge_fs_access_denied_upstream: summary: knowledge_fs_access_denied value: code: knowledge_fs_access_denied failure: action: contact_admin category: authorization code: KNOWLEDGE_FS_ACCESS_DENIED message: >- You do not have permission to perform this Agent Knowledge Base operation. retryPolicy: never message: >- You do not have permission to perform this Agent Knowledge Base operation. status: 403 description: >- - `knowledge_fs_access_denied`: the key is scoped to other knowledge bases, **API access** is off for this knowledge base, or the knowledge base is not active. - `knowledge_fs_access_denied`: write permission for this deletion was revoked while the deletion was being admitted. - `forbidden`: on Dify Cloud, the workspace has reached the knowledge base request rate limit of its subscription. Every call counts, reads included. '404': content: application/json: examples: knowledge_fs_resource_not_found: summary: knowledge_fs_resource_not_found value: code: knowledge_fs_resource_not_found failure: category: not_found code: KNOWLEDGE_FS_NOT_FOUND message: >- The requested Agent Knowledge Base resource was not found. retryPolicy: never message: The requested Agent Knowledge Base resource was not found. status: 404 not_found: summary: not_found (feature off) value: code: not_found message: >- The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again. status: 404 description: >- - `knowledge_fs_resource_not_found`: no source with this ID exists in the knowledge base, its `permission_scope` is outside the key's grants, or a deletion of it has already been accepted. - `not_found`: the Agent Knowledge Base feature is turned off on this deployment. '409': content: application/json: examples: durable_deletion_idempotency_conflict: summary: knowledge_fs_conflict (key reused) value: code: knowledge_fs_conflict failure: category: conflict code: DURABLE_DELETION_IDEMPOTENCY_CONFLICT message: >- The Agent Knowledge Base operation conflicts with the current resource state. retryPolicy: never traceId: 5e2a9c17-3b4d-4f60-8a1b-2c3d4e5f6a7b message: >- The Agent Knowledge Base operation conflicts with the current resource state. status: 409 knowledge_fs_conflict: summary: knowledge_fs_conflict value: code: knowledge_fs_conflict failure: action: retry category: conflict code: KNOWLEDGE_FS_CONFLICT message: >- The Agent Knowledge Base operation conflicts with the current resource state. retryPolicy: manual message: >- The Agent Knowledge Base operation conflicts with the current resource state. status: 409 description: >- - `knowledge_fs_conflict`: `expectedRevision` does not match the source's current `version`. - `knowledge_fs_conflict`: a deletion of one of the source's documents is still in progress. - `knowledge_fs_conflict`: `Idempotency-Key` was already used for a different request or from another API key. `failure.code` is `DURABLE_DELETION_IDEMPOTENCY_CONFLICT`, with `retryPolicy` `never`; the other conflicts carry `KNOWLEDGE_FS_CONFLICT`. '413': content: application/json: examples: knowledge_fs_request_too_large: summary: knowledge_fs_request_too_large (request budget) value: code: knowledge_fs_request_too_large message: Agent Knowledge Base request is too large. status: 413 description: >- - `knowledge_fs_request_too_large`: the request, once Dify adds its defaults, exceeds 32,768 UTF-8 bytes. See [Request Size Limits](/en/api-reference/guides/knowledge-base#request-size-limits). '502': content: application/json: examples: knowledge_fs_upstream_unavailable: summary: knowledge_fs_upstream_unavailable value: code: knowledge_fs_upstream_unavailable message: Agent Knowledge Base is unavailable. status: 502 description: >- - `knowledge_fs_upstream_unavailable`: no answer came back in time, or the answer couldn't be read. The deletion may have been accepted. Send the same request again with the same `Idempotency-Key`: if the deletion was accepted, it returns the original job. '503': content: application/json: examples: knowledge_fs_operation_unavailable: summary: knowledge_fs_operation_unavailable value: code: knowledge_fs_operation_unavailable message: Agent Knowledge Base operation is not available. status: 503 knowledge_fs_operation_unavailable_upstream: summary: knowledge_fs_operation_unavailable (temporary) value: code: knowledge_fs_operation_unavailable failure: action: retry category: dependency code: KNOWLEDGE_FS_UNAVAILABLE message: >- A service required by Agent Knowledge Base is temporarily unavailable. retryPolicy: manual traceId: 5e2a9c17-3b4d-4f60-8a1b-2c3d4e5f6a7b message: >- A service required by Agent Knowledge Base is temporarily unavailable. status: 503 description: >- - `knowledge_fs_operation_unavailable`: the Agent Knowledge Base feature is not set up for this workspace, this operation is not available on the deployment, or the key's access to this knowledge base changed while the request was being authorized. - `knowledge_fs_operation_unavailable`: the request can't be served right now. Follow `failure.retryPolicy`. components: schemas: KnowledgeBaseDeletionJob: properties: checkpoint: description: >- How far the deletion has progressed: `requested` (newly accepted), then `quiescing`, `deleting_objects`, `deleting_derived_data`, `deleting_primary_data`, and `completed`. type: string completed_at: description: >- When the job completed, ISO 8601. `null` until then, and on a `failed` job. nullable: true type: string created_at: description: When the job was accepted, ISO 8601. type: string error: description: >- The last error, or `null` when there is none. It is also set while `run_state` is `retry_wait`, so read `run_state`, not `error`, to tell whether the job failed. nullable: true properties: code: description: Code of the last error. type: string message: description: >- Public message for the last error. Internal error details are omitted. type: string retryable: description: >- `true` when `run_state` is `failed`. This API can't retry a failed deletion. type: boolean type: object id: description: Deletion job ID. type: string knowledge_space_id: description: >- Internal ID of the knowledge base. Not the knowledge base ID in the path. type: string mode: description: >- How a source deletion treats the source's documents: `cascade` deletes them, `keep` keeps them. On a document file deletion it says nothing about what the deletion removes. nullable: true type: string progress: description: >- Item counts of a multi-item deletion. Not populated by this API. Always `null`. nullable: true properties: completed_items: description: Items deleted so far. type: integer current_item_kind: description: Kind of the item being deleted. nullable: true type: string total_items: description: Items to delete. nullable: true type: integer type: object retry_at: description: >- When the next automatic retry runs, ISO 8601. `null` when none is scheduled. nullable: true type: string run_state: description: >- Scheduler state: - `dispatch_pending` (newly accepted), `queued`, `running`: in progress. - `retry_wait`: an automatic retry is scheduled at `retry_at`. - `completed`: everything was removed. - `failed`: cleanup stopped, and the target stays hidden. It can't be retried. type: string target_id: description: >- ID of the target: the document file ID for `document`, the source ID for `source`. type: string target_type: description: >- What the job deletes: `document` for a document file, `source` for a source. type: string updated_at: description: When the job last changed, ISO 8601. type: string type: object securitySchemes: ApiKeyAuth: bearerFormat: API_KEY description: >- Every request authenticates with an API key: `Authorization: Bearer {API_KEY}`. App endpoints take an app API key; knowledge endpoints take a knowledge base API key ([Get Started](/en/api-reference/guides/get-started)). Keep keys server-side; never embed them in client code. Requests with a missing or invalid key fail with HTTP `401` (`unauthorized`). scheme: bearer type: http ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.