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Extend Classify API

The Classify API from Extend — 4 operation(s) for classify.

Extend Classify API is one of 9 APIs that Extend publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Classify. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 5 operations across 4 paths, and defines 11 schemas. It is described by OpenAPI 3.0.1, at version 2026-02-09.

Requests are made against a single base URL, https://api.extend.ai.

5 operations 4 paths 11 schemas 2 GET3 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.1
API Version
2026-02-09
Base URL
https://api.extend.ai
Authentication
HTTP Bearer
Terms of Service
Resource Areas
1

Authentication & Security 1

Extend Classify API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (BearerAuth). By default, every request must be authenticated.

  • BearerAuth — Provide your Extend API token as a Bearer token in the Authorization header.

Paths & Operations 5

Across 4 paths, the API surfaces 5 operations — 2 GET, 3 POST. Each is listed below with its method, path, parameters, and response codes.

Classify 5
POST
/classify
Classify a file (synchronous)
classifyFile 1 param body → 200default
POST
/classify_runs
Create a classify run (asynchronous)
createClassifyRun 1 param body → 200default
GET
/classify_runs/{id}
Get a classify run
getClassifyRun 2 params → 200default
GET
/classifiers
List classifiers
listClassifiers 3 params → 200default
POST
/classifiers
Create a classifier
createClassifier 1 param body → 200default

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. The most detailed are ProcessorRun (11 properties), Processor (8 properties), ClassifyRequest (4 properties), ApiError (4 properties). Each schema is shown below with its type and property counts.

ClassifyRequest
object
4 properties 1 required
Processor
object
8 properties
RunStatus
string
FileInput
FileFromUrl
object
3 properties 1 required
RunMetadata
object
Custom metadata for a run, up to 10KB.
ProcessorRun
object
11 properties
FileFromId
object
1 property 1 required
FileFromText
object
1 property 1 required
ApiError
object
4 properties
ProcessorCreateRequest
object
2 properties 1 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

extend-ai-classify-api-openapi.yml Raw ↑

Other APIs Extend publishes across the network.

Extend Batch API
Extend Evaluations API
Extend Extract API
Extend Files API
Extend Parse API
Extend Split API
Extend Workflow Runs API
Extend Workflows API