Perform AI assistive search within a project version.

12 May 2026
7 Minutes to read
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Perform AI assistive search within a project version.

Updated on 12 May 2026
7 Minutes to read
Contributors

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Post

/v3/projects/{project_id}/project-versions/ai/query

Sends a natural language query to the AI assistive search engine and returns a generated answer based on the project's documentation content. Both ProjectVersionId and Query are required in the request body; a 422 is returned if either is missing or empty. Use POST /v3/projects/{projectId}/project-versions/ai/feedback to submit user feedback on the generated response.

Security

OAuth

All V3 endpoints require a Bearer token. Generate tokens in the Document360 portal under Settings > API Tokens. Tokens are project-scoped, require the customerApi scope, and do not expire by default. Tokens can be revoked at any time from the portal. Include the token in every request: Authorization: Bearer <your-token>. Alternatively, use the Authorize button below to sign in via OAuth2 Authorization Code flow with PKCE.

FlowAuthorization Code

Authorization URLhttps://identity.document360.net/connect/authorize

Token URLhttps://identity.document360.net/connect/token

Scopes:

customerApiDocument360 Customer API

Path parameters

project_id

string (uuid) Required

The unique identifier of the project. Retrieve project IDs from GET /v3/projects.

Example9a3b4c5d-6e7f-8a9b-0c1d-2e3f4a5b6c7d

Body parameters

The AI query request.

object

Request to submit a natural language query to the AI-powered knowledge base search.

query

string Required

The natural language question to ask the AI assistant.

Min length1

ExampleHow do I configure SSO authentication?

project_version_id

string Required

Unique identifier of the project version to search within.

Min length1

Responses

200

AI response retrieved successfully.

Expand All

object

Generic API response wrapper containing typed data.

data

object

Response data payload.

answer

string | null

The AI-generated answer to the user's query, synthesized from knowledge base articles.

source_article_ids

Array of string | null

List of article IDs that were used as sources to generate the answer.

string

success

boolean

Whether the API request was successful.

request_id

string

Unique identifier for request tracing and correlation.

Min length1

errors

Array of object (ApiError) | null

List of errors if the request failed.

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

List of non-fatal warnings from the request.

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

400

The request body is malformed or contains invalid JSON.

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object

RFC 7807 Problem Details response for V3 API errors. Content-Type: application/problem+json

type

string

URI reference identifying the error type (links to documentation).

Min length1

title

string

Short human-readable summary of the error type.

Min length1

status

integer (int32)

HTTP status code.

detail

string | null

Human-readable explanation specific to this occurrence.

instance

string | null

URI of the request that generated the error.

trace_id

string | null

Request trace identifier for correlation.

errors

Array of object (ApiError) | null

Structured list of specific errors (extension field).

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

Non-fatal warnings (extension field).

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

401

Authentication token is missing or invalid.

Headers

WWW-Authenticate

string

Indicates the authentication scheme required. Returns `Bearer` with optional `error` and `error_description` parameters per RFC 6750.

Missing or invalid token

Authentication token is missing or invalid.

{
  "type": "https://developer.document360.com/errors/unauthorized",
  "title": "Unauthorized.",
  "status": 401,
  "detail": "The authentication token is missing or has expired.",
  "instance": null,
  "trace_id": "req_abc123def456",
  "errors": [
    {
      "code": "UNAUTHORIZED",
      "message": "Bearer token is missing or invalid.",
      "field": null,
      "details": null
    }
  ],
  "warnings": null
}

Expand All

object

RFC 7807 Problem Details response for V3 API errors. Content-Type: application/problem+json

type

string

URI reference identifying the error type (links to documentation).

Min length1

title

string

Short human-readable summary of the error type.

Min length1

status

integer (int32)

HTTP status code.

detail

string | null

Human-readable explanation specific to this occurrence.

instance

string | null

URI of the request that generated the error.

trace_id

string | null

Request trace identifier for correlation.

errors

Array of object (ApiError) | null

Structured list of specific errors (extension field).

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

Non-fatal warnings (extension field).

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

422

Validation failed.

Validation failed

The request body contains invalid data.

{
  "type": "https://developer.document360.com/errors/validation-error",
  "title": "Unprocessable Entity.",
  "status": 422,
  "detail": "One or more fields failed validation.",
  "instance": null,
  "trace_id": "req_abc123def456",
  "errors": [
    {
      "code": "VALIDATION_ERROR",
      "message": "This field is required.",
      "field": "title",
      "details": null
    }
  ],
  "warnings": null
}

Expand All

object

RFC 7807 Problem Details response for V3 API errors. Content-Type: application/problem+json

type

string

URI reference identifying the error type (links to documentation).

Min length1

title

string

Short human-readable summary of the error type.

Min length1

status

integer (int32)

HTTP status code.

detail

string | null

Human-readable explanation specific to this occurrence.

instance

string | null

URI of the request that generated the error.

trace_id

string | null

Request trace identifier for correlation.

errors

Array of object (ApiError) | null

Structured list of specific errors (extension field).

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

Non-fatal warnings (extension field).

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

429

Rate limit exceeded. Retry after the duration specified in the Retry-After header.

Headers

Retry-After

integer

Number of seconds to wait before retrying the request. Use exponential backoff with jitter for optimal retry behavior.

X-RateLimit-Limit

integer

The maximum number of requests allowed in the current time window. Limits are applied per API token per project.

X-RateLimit-Remaining

integer

The number of requests remaining in the current time window. When this reaches 0, subsequent requests will receive a 429 response.

X-RateLimit-Reset

integer

The UTC epoch timestamp (in seconds) when the current rate limit window resets.

Rate limit exceeded

Rate limit exceeded.

{
  "type": "https://developer.document360.com/errors/too-many-requests",
  "title": "Too Many Requests.",
  "status": 429,
  "detail": "Rate limit exceeded. Retry after the duration specified in the Retry-After header.",
  "instance": null,
  "trace_id": "req_abc123def456",
  "errors": [
    {
      "code": "TOO_MANY_REQUESTS",
      "message": "Rate limit exceeded. Retry after the duration specified in the Retry-After header.",
      "field": null,
      "details": null
    }
  ],
  "warnings": null
}

Expand All

object

RFC 7807 Problem Details response for V3 API errors. Content-Type: application/problem+json

type

string

URI reference identifying the error type (links to documentation).

Min length1

title

string

Short human-readable summary of the error type.

Min length1

status

integer (int32)

HTTP status code.

detail

string | null

Human-readable explanation specific to this occurrence.

instance

string | null

URI of the request that generated the error.

trace_id

string | null

Request trace identifier for correlation.

errors

Array of object (ApiError) | null

Structured list of specific errors (extension field).

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

Non-fatal warnings (extension field).

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

500

An unexpected server error occurred.

Unexpected server error

Unexpected server error.

{
  "type": "https://developer.document360.com/errors/internal-error",
  "title": "Internal Server Error.",
  "status": 500,
  "detail": "An unexpected error occurred. Please try again or contact support.",
  "instance": null,
  "trace_id": "req_abc123def456",
  "errors": [
    {
      "code": "INTERNAL_SERVER_ERROR",
      "message": "An unexpected error occurred.",
      "field": null,
      "details": null
    }
  ],
  "warnings": null
}

Expand All

object

RFC 7807 Problem Details response for V3 API errors. Content-Type: application/problem+json

type

string

URI reference identifying the error type (links to documentation).

Min length1

title

string

Short human-readable summary of the error type.

Min length1

status

integer (int32)

HTTP status code.

detail

string | null

Human-readable explanation specific to this occurrence.

instance

string | null

URI of the request that generated the error.

trace_id

string | null

Request trace identifier for correlation.

errors

Array of object (ApiError) | null

Structured list of specific errors (extension field).

object

Represents an error returned by the API.

code

string

Machine-readable error code (e.g. VALIDATION_ERROR, RESOURCE_NOT_FOUND).

Min length1

message

string

Human-readable error message.

Min length1

field

string | null

The request field that caused the error, if applicable.

details

string | null

Additional context about the error.

warnings

Array of object (ApiWarning) | null

Non-fatal warnings (extension field).

object

Represents a non-fatal warning from the API.

code

string

Machine-readable warning code.

Min length1

message

string

Human-readable warning message.

Min length1

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