Index Text | Captain Docs

Index plain text content into a collection.

Accepts raw text content in the request body, saves it as a .txt file, and indexes it for semantic search. No file upload or cloud storage needed.

Headers:

Authorization: Bearer {api_key} - Captain API key for authentication
X-Organization-ID: Organization UUID
Idempotency-Key: UUID for request deduplication (optional)

Args: collection_name: Name of the collection (path parameter) body: Text content and optional metadata

Returns: { job_id, status: “pending” }

Index plain text content into a collection. Accepts raw text content in the request body, saves it as a .txt file, and indexes it for semantic search. No file upload or cloud storage needed. Headers: - Authorization: Bearer {api_key} - Captain API key for authentication - X-Organization-ID: Organization UUID - Idempotency-Key: UUID for request deduplication (optional) Args: collection_name: Name of the collection (path parameter) body: Text content and optional metadata Returns: { job_id, status: "pending" }

Path parameters

collection_namestringRequired

Request

This endpoint expects an object.

contentstringRequired

The text content to index.

custom_metadatamap from strings to strings or integers or doubles or booleans or lists of strings or nullOptional

Custom metadata to attach to all indexed chunks. Keys must be strings. Values: str, int, float, bool, or List[str].

filenamestring or nullOptional

Optional filename for the text document. Defaults to ‘snippet-{N}.txt’ where N auto-increments.

mask_piibooleanOptionalDefaults to false

When true, detected PII (emails, phone numbers, SSNs, credit cards, names, and locations) is masked in the parsed content before it is embedded and stored — replaced with entity tags like <PERSON> and <EMAIL_ADDRESS>. For images (including images embedded in PDFs), PII text visible in the image is also pixel-redacted. Opt-in; defaults to false, which leaves content unchanged.

pii_engineenumOptionalDefaults to kev

Masking engine for this job. kev (default): the Kev classifier model on Captain’s infrastructure; supports pii_fields and pii_instructions; no fallback, so a file kev cannot mask fails to index and the rest of the job continues. jev: TypeSafe’s hosted Jev model, slightly more accurate, best-effort availability; supports custom fields and instructions and may list fallbacks in pii_fallback. presidio: the legacy pattern engine, built-in categories only (rejects pii_fields or pii_instructions with 422), never a fallback. Requires mask_pii: true. The earlier names captain-jev and captain-presidio keep working as before; new requests should use kev, jev or presidio.

Allowed values:

pii_fallbackobject or booleanOptional

Ordered fallback engines for jev, as {"engines": [...], "retry_budget_seconds": n}. Omitted or an empty engines list means no fallback. Only valid with pii_engine: "jev"; with kev or presidio a non-empty list answers 422. On the multipart file upload endpoint, send it as a JSON string form field. With the earlier engine name captain-jev it is true (default, fall back to captain-presidio) or false.

pii_fieldslist of objects or nullOptional

Additional PII categories to mask for this job, on top of the built-in set. Requires mask_pii to be true. Up to 20 fields. Each masked value is replaced with the field’s tag in angle brackets and appears in the masking report under the field’s name.

pii_instructionsstring or nullOptional<=1000 characters

Plain-language guidance that steers what counts as personal data for this job, for the built-in categories and any pii_fields. For example: ‘Names of hospital staff may stay; patient names, record numbers and bed assignments must be masked.’ Requires mask_pii to be true. Up to 1,000 characters.

Response

Successful Response

job_idstring

statusstringOptionalDefaults to pending

custom_metadatamap from strings to any or nullOptional

The custom_metadata Captain accepted for this job, echoed back as validated. Null when none was supplied.