How AI is applied across API Evangelist and APIs.io. Read my AI disclosure →
API Evangelist API Evangelist
Discovery
Learnings
Guidance
Toolbox
Alignment
API Evangelist LLC

Cognition Labs Attachments API

Upload and download files for Devin to work with.

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

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

This API exposes 2 operations across 2 paths, and defines 1 schema. It is described by OpenAPI 3.2.0, at version 1.0.

Requests are made against 2 base URLs: https://api.devin.ai/v1, https://api.devin.ai/v3.

2 operations 2 paths 1 schemas 1 GET1 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0
Base URL
https://api.devin.ai/v1
Authentication
HTTP Bearer
Contact
Resource Areas
1

Authentication & Security 1

Cognition Labs Attachments API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (bearerAuth). By default, every request must be authenticated.

  • bearerAuth — v1/v2 keys are prefixed apkuser (personal) or apk (service). The current v3 API uses service-user or personal access tokens prefixed cog. Passed as Authorizati…

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 1 GET, 1 POST. Each is listed below with its method, path, parameters, and response codes.

Attachments 2

Upload and download files for Devin to work with.

POST
/attachments
Upload a file for Devin to work with
uploadAttachment body → 200422
GET
/attachments/{attachment_id}
Download an attachment file
downloadAttachment 1 param → 200422

Schemas 1

The contract defines 1 schema that model the data the API accepts and returns. The most detailed is ValidationErrorBody (1 property). Each schema is shown below with its type and property counts.

ValidationErrorBody
object
1 property

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

cognition-labs-attachments-api-openapi.yml Raw ↑

Other APIs Cognition Labs publishes across the network.

Cognition Labs Consumption API
Cognition Labs Enterprise (v3) API
Cognition Labs Knowledge API
Cognition Labs Messages API
Cognition Labs Organizations (v3) API
Cognition Labs Playbooks API
Cognition Labs Secrets API
Cognition Labs Sessions API
Where this information came from

This is an independent, third-party profile of Cognition Labs Attachments API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.