Attio website screenshot

Attio

Attio is a modern, flexible, and data-driven customer relationship management (CRM) platform that lets revenue teams build a CRM around their unique data model with customizable objects, attributes, lists, and workflows. Attio syncs contacts and companies from email and calendar, enriches them with data, and powers reporting, sequences, and automations. The Attio REST API exposes full CRUD access to records, lists, objects, attributes, tasks, notes, threads, comments, and webhooks using Bearer token authentication and a public OpenAPI specification.

Attio publishes 16 APIs on the APIs.io network, including Attributes API, Call Recordings API, Comments API, and 13 more. Tagged areas include CRM, Sales, Contacts, Companies, and Pipeline.

Attio’s developer surface includes authentication, documentation, pricing, signup flow, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.3/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
16 APIs
CRMSalesContactsCompaniesPipelineWorkflows

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 40.3/100 · developing
Contract Quality 13.2 / 25
Developer Ergonomics 1.9 / 20
Access Clarity 12.6 / 20
Operational Transparency 4.4 / 13
Contract Governance 0.0 / 12
Discoverability 8.2 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 8 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/attio: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 16

Individual APIs this provider publishes, each with its own machine-readable definition.

Attio Attributes API

The Attributes API from Attio — 2 operation(s) for attributes.

Attio Call Recordings API

The Call Recordings API from Attio — 1 operation(s) for call recordings.

Attio Comments API

The Comments API from Attio — 2 operation(s) for comments.

Attio Entries API

The Entries API from Attio — 1 operation(s) for entries.

Attio Files API

The Files API from Attio — 1 operation(s) for files.

Attio Lists API

The Lists API from Attio — 2 operation(s) for lists.

Attio Meetings API

The Meetings API from Attio — 2 operation(s) for meetings.

Attio Meta API

The Meta API from Attio — 1 operation(s) for meta.

Attio Notes API

The Notes API from Attio — 1 operation(s) for notes.

Attio OAuth API

The OAuth API from Attio — 2 operation(s) for oauth.

Attio Objects API

The Objects API from Attio — 2 operation(s) for objects.

Attio Records API

The Records API from Attio — 3 operation(s) for records.

Attio Tasks API

The Tasks API from Attio — 1 operation(s) for tasks.

Attio Threads API

The Threads API from Attio — 1 operation(s) for threads.

Attio Webhooks API

The Webhooks API from Attio — 2 operation(s) for webhooks.

Attio Workspace Members API

The Workspace Members API from Attio — 2 operation(s) for workspace members.

Scroll for all 16

Open Collections 20

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Attio REST Attributes API

OPEN COLLECTION

Attio REST Attributes Call Recordings API

OPEN COLLECTION

Attio REST API

OPEN COLLECTION

Attio REST Attributes Comments API

OPEN COLLECTION

Attio REST Attributes Entries API

OPEN COLLECTION

Attio REST Attributes Files API

OPEN COLLECTION

Attio REST Attributes List Entries API

OPEN COLLECTION

Attio REST Attributes Lists API

OPEN COLLECTION

Attio REST Attributes Meetings API

OPEN COLLECTION

Attio REST Attributes Meta API

OPEN COLLECTION

Attio REST Attributes Notes API

OPEN COLLECTION

Attio REST Attributes OAuth API

OPEN COLLECTION

Attio REST Attributes Objects API

OPEN COLLECTION

Attio REST Attributes Records API

OPEN COLLECTION

Attio REST Attributes Tasks API

OPEN COLLECTION

Attio REST Attributes Threads API

OPEN COLLECTION

Attio REST Attributes Webhooks API

OPEN COLLECTION

Attio REST Attributes Workspace Members API

OPEN COLLECTION

Attio REST API

OPEN COLLECTION

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Pricing Plans 1

Published pricing tiers and plan structures.

Attio Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Attio Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Attio Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Attio Authentication

http/oauth2 · 2 schemes

SECURITY

Attio Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Attio Scopes

7 scopes · authorizationCode

7 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Attio Agentic Access

45 operations · 23 acting

45 operations · 23 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup
Signup

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Other 1

Properties that don't map to a standard resource type

AgentCard
AgentCard

Source (apis.yml)

apis.yml Raw ↑ 
aid: attio
name: Attio
description: Attio is a modern, flexible, and data-driven customer relationship management (CRM) platform that lets revenue
  teams build a CRM around their unique data model with customizable objects, attributes, lists, and workflows. Attio syncs
  contacts and companies from email and calendar, enriches them with data, and powers reporting, sequences, and automations.
  The Attio REST API exposes full CRUD access to records, lists, objects, attributes, tasks, notes, threads, comments, and
  webhooks using Bearer token authentication and a public OpenAPI specification.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- CRM
- Sales
- Contacts
- Companies
- Pipeline
- Workflows
tags_raw:
- CRM
- Customer Relationship Management
- Sales
- Contacts
- Companies
- Pipeline
- Workflows
url: https://raw.githubusercontent.com/api-evangelist/attio/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-08-08'
specificationVersion: '0.23'
apis:
- aid: attio:attio-attributes-api
  name: Attio Attributes API
  description: The Attributes API from Attio — 2 operation(s) for attributes.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Attributes
  properties:
  - type: OpenAPI
    url: openapi/attio-attributes-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-call-recordings-api
  name: Attio Call Recordings API
  description: The Call Recordings API from Attio — 1 operation(s) for call recordings.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Call Recordings
  properties:
  - type: OpenAPI
    url: openapi/attio-call-recordings-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-comments-api
  name: Attio Comments API
  description: The Comments API from Attio — 2 operation(s) for comments.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Comments
  properties:
  - type: OpenAPI
    url: openapi/attio-comments-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-entries-api
  name: Attio Entries API
  description: The Entries API from Attio — 1 operation(s) for entries.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Entries
  properties:
  - type: OpenAPI
    url: openapi/attio-entries-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-files-api
  name: Attio Files API
  description: The Files API from Attio — 1 operation(s) for files.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - File
  tags_raw:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/attio-files-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-lists-api
  name: Attio Lists API
  description: The Lists API from Attio — 2 operation(s) for lists.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - List
  tags_raw:
  - Lists
  properties:
  - type: OpenAPI
    url: openapi/attio-lists-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-meetings-api
  name: Attio Meetings API
  description: The Meetings API from Attio — 2 operation(s) for meetings.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Meetings
  properties:
  - type: OpenAPI
    url: openapi/attio-meetings-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-meta-api
  name: Attio Meta API
  description: The Meta API from Attio — 1 operation(s) for meta.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Meta
  properties:
  - type: OpenAPI
    url: openapi/attio-meta-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-notes-api
  name: Attio Notes API
  description: The Notes API from Attio — 1 operation(s) for notes.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Notes
  properties:
  - type: OpenAPI
    url: openapi/attio-notes-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-oauth-api
  name: Attio OAuth API
  description: The OAuth API from Attio — 2 operation(s) for oauth.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Authentication
  tags_raw:
  - OAuth
  properties:
  - type: OpenAPI
    url: openapi/attio-oauth-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-objects-api
  name: Attio Objects API
  description: The Objects API from Attio — 2 operation(s) for objects.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Objects
  properties:
  - type: OpenAPI
    url: openapi/attio-objects-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-records-api
  name: Attio Records API
  description: The Records API from Attio — 3 operation(s) for records.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Records
  properties:
  - type: OpenAPI
    url: openapi/attio-records-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-tasks-api
  name: Attio Tasks API
  description: The Tasks API from Attio — 1 operation(s) for tasks.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Task
  tags_raw:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/attio-tasks-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-threads-api
  name: Attio Threads API
  description: The Threads API from Attio — 1 operation(s) for threads.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Threads
  properties:
  - type: OpenAPI
    url: openapi/attio-threads-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-webhooks-api
  name: Attio Webhooks API
  description: The Webhooks API from Attio — 2 operation(s) for webhooks.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/attio-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
- aid: attio:attio-workspace-members-api
  name: Attio Workspace Members API
  description: The Workspace Members API from Attio — 2 operation(s) for workspace members.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - Workspace Members
  properties:
  - type: OpenAPI
    url: openapi/attio-workspace-members-api-openapi.yml
  - type: Documentation
    url: https://docs.attio.com/rest-api
  - type: Developer Platform
    url: https://attio.com/platform/developers
  - type: Authentication
    url: https://docs.attio.com/rest-api/how-to/authentication
common:
- type: AgentCard
  url: a2a/attio-a2a.yml
  name: A2A Agent Card
  description: Agent Card served at /.well-known/agent-card.json (flavored against A2A 1.0.0).
- type: AgenticAccess
  url: agentic-access/attio-agentic-access.yml
- type: DomainSecurity
  url: security/attio-domain-security.yml
- type: Authentication
  url: authentication/attio-authentication.yml
- type: OAuthScopes
  url: scopes/attio-scopes.yml
- type: GitHubOrganization
  url: https://github.com/attio
- type: LinkedIn
  url: https://www.linkedin.com/company/attio
- type: Website
  url: https://attio.com
- type: Documentation
  url: https://docs.attio.com
- type: Pricing
  url: https://attio.com/pricing
- type: Signup
  url: https://app.attio.com/welcome/sign-in
- type: LlmsText
  url: https://docs.attio.com/llms.txt
- type: Plans
  url: plans/attio-plans-pricing.yml
- type: RateLimits
  url: rate-limits/attio-rate-limits.yml
- type: FinOps
  url: finops/attio-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-merged-from:
- attio-com