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 17 API contracts indexed on the APIs.io network, including Attributes API, Call Recordings API, Comments API, and 14 more. Tagged areas include CRM, Sales, Contacts, Companies, and Pipelines.

The Attio catalog on APIs.io includes 1 Spectral governance ruleset.

Attio’s developer surface includes engineering blog, authentication, documentation, pricing, signup flow, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.9/100 emerging ▬ flat Agent 45/100 agent ready Front door AI 4/6 moderate Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers

CRM Sales Contacts Companies Pipelines Workflows A2A

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Customer Relationship Management

BC-420

Records

POST /v2/objects/{object_id}/records PUT /v2/objects/{object_id}/records POST /v2/objects/{object_id}/records/search

Developer Platform & API Ecosystem Management

BC-4270

Webhooks

POST /v2/webhooks DELETE /v2/webhooks/{webhook_id}

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 21.9/100 · emerging

Contract Quality 0.2 / 19

Developer Ergonomics 1.8 / 15

Access Clarity 4.7 / 15

Operational Transparency 1.0 / 10

Contract Governance 1.2 / 9

Discoverability 5.6 / 8

Regulatory Posture 3.2 / 15

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 5 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
Agent Skills +5 pts — skills artifact present, graded by who authored it

4 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 1.0 — up to +24.8 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points
Access Clarity scores 31.6 — up to +13.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/attio/apis.yml: open an issue on github.com/api-evangelist/attio to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Zoom App Marketplace and Partner Ecosystem (builders and partners on Zoom)	builds-on	36.4	-	1
Raycast Store Extensions (first-party publishers + community-wrapped products)	builds-on	36.4	-	1

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 6

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Agent2Agent

measured — observed by APIs.io (flavored)

Model Context Protocol (MCP)

measured — observed by APIs.io (verified)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

Dynamic Client Registration

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 17

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 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.

Attio List Entries API

Entries within a list, referencing a parent record.

Attio O Auth API

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

Scroll for all 17

Open Collections 19

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

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

Scroll for all 19

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Attio MCP Server

Remote MCP server at mcp.attio.com over HTTP.

MCP SERVER

Attio API pricing

Not yet checked against Attio's own pricing page. Compiled by API Evangelist on 2026-07-02 from attio.com/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free free	Free
Plus paid	$29 per per Seat / month
Pro paid	$69 per per Seat / month
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Read Requests: 100 requests
Write Requests: 25 requests
Webhook Delivery: 25 requests

Compiled by API Evangelist, not yet checked against Attio's documentation. Rate-limit details →

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

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Attio

SLA

FinOps 1

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

Attio Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Attio API Rules

50 rules · 48 errors 1 warnings 1 info

SPECTRAL

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

52 operations · 27 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 3

The organization behind the API

Blog

Blog

LinkedIn

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

AgentCard

AgentCard

Source (apis.yml)

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
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-09-19
x-docs-hosting: vercel
tags:
- CRM
- Sales
- Contacts
- Companies
- Pipelines
- Workflows
- A2A
tags_raw:
- CRM
- Customer Relationship Management
- Sales
- Contacts
- Companies
- Pipeline
- Workflows
- A2A
url: https://raw.githubusercontent.com/api-evangelist/attio/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-10-06'
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-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
- aid: attio:attio-list-entries-api
  name: Attio List Entries API
  description: Entries within a list, referencing a parent record.
  humanURL: https://docs.attio.com/rest-api
  baseURL: https://api.attio.com
  tags:
  - List Entries
  properties:
  - type: OpenAPI
    url: openapi/attio-list-entries-api-openapi.yml
- aid: attio:attio-oauth-api
  name: Attio O Auth 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:
  - OAuth
  - Authentication
  tags_raw:
  - OAuth
  - Authentication
  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
common:
- url: https://attio.com/blog
  type: Blog
- type: CapabilityMap
  url: capabilities/attio-capability-edges.yml
  name: Attio Business Capability Map
- 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
x-a2a:
  verified: true
  probed: '2026-09-26'
  url: https://attio.com/.well-known/agent-card.json
  grade: flavored
  protocol_version: '1.0'
  control: 404

Attio API — frequently asked questions

Does Attio have an API?

Yes. APIs.io lists 17 APIs from Attio, including Attio Attributes API, Attio Call Recordings API and Attio Comments API, and 14 more.

Is there an OpenAPI specification for the Attio API?

Yes. APIs.io indexes 17 OpenAPI specifications for Attio, each linked for download from this page.

How do I authenticate with the Attio API?

Attio documents its authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Attio Authentication.

How much does the Attio API cost?

APIs.io lists 4 pricing plans for Attio, with each plan's price, limits and inclusions under Pricing on this page.

Does Attio have an MCP server?

Yes. APIs.io lists 1 MCP server for Attio: Remote MCP server at mcp.attio.com over HTTP.

Is the Attio API ready for AI agents?

Attio has a Kin Score of 21.9 out of 100 (emerging) and an Agent Readiness score of 45.3 (agent-ready), scored by API Evangelist on 2026-11-06.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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curl "https://apis.io/api/v1/providers/attio"

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Every operation they expose

curl "https://apis.io/api/v1/providers/attio/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/attio/evidence"

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