name: Affinity
description: >-
  Affinity is a relationship intelligence CRM built for private equity, venture
  capital, and investment banking teams. It provides a REST API that enables
  developers to manage contacts, organizations, opportunities, lists, notes, and
  relationship timelines derived from email and calendar activity. The API is
  available in two versions: a legacy V1 with full read/write capabilities for
  persons, companies, opportunities, notes, interactions, reminders, and webhooks,
  and a modern V2 RESTful interface designed for internal apps, automated
  workflows, and third-party integrations. API access is included in the Scale,
  Advanced, and Enterprise subscription tiers, with monthly call limits ranging
  from 100,000 to unlimited depending on the plan.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/affinity.png
url: https://raw.githubusercontent.com/api-evangelist/affinity/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
type: Index
tags:
  - CRM
  - Relationship Intelligence
  - Private Equity
  - Venture Capital
  - Contacts
  - Organizations
  - Opportunities
  - Deal Management
apis:
- name: Affinity API V1
  description: >-
    The legacy Affinity V1 API provides comprehensive read and write access to core CRM data including
    persons, organizations, opportunities, lists, notes, interactions, reminders, and webhooks. It uses
    HTTP Basic Auth or Bearer Auth with an API key obtained from the Affinity Settings dashboard.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - CRM
  - Contacts
  - Organizations
  - Opportunities
  - Notes
  - Webhooks
  properties:
  - type: Documentation
    url: https://api-docs.affinity.co/
- aid: affinity:affinity-auth-api
  name: Affinity auth API
  description: Operations about auths
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/affinity-auth-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-companies-api
  name: Affinity companies API
  description: Operations about companies
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - companies
  properties:
  - type: OpenAPI
    url: openapi/affinity-companies-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-companymerges-api
  name: Affinity companyMerges API
  description: Operations about company merges
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - companyMerges
  properties:
  - type: OpenAPI
    url: openapi/affinity-companymerges-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-emails-api
  name: Affinity emails API
  description: Operations about emails
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - emails
  properties:
  - type: OpenAPI
    url: openapi/affinity-emails-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-lists-api
  name: Affinity lists API
  description: Operations about lists
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - lists
  properties:
  - type: OpenAPI
    url: openapi/affinity-lists-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-meetings-api
  name: Affinity meetings API
  description: Operations about meetings
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - meetings
  properties:
  - type: OpenAPI
    url: openapi/affinity-meetings-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-notes-api
  name: Affinity notes API
  description: Operations about notes
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - notes
  properties:
  - type: OpenAPI
    url: openapi/affinity-notes-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-opportunities-api
  name: Affinity opportunities API
  description: Operations about opportunities
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - opportunities
  properties:
  - type: OpenAPI
    url: openapi/affinity-opportunities-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-personmerges-api
  name: Affinity personMerges API
  description: Operations about person merges
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - personMerges
  properties:
  - type: OpenAPI
    url: openapi/affinity-personmerges-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
- aid: affinity:affinity-persons-api
  name: Affinity persons API
  description: Operations about persons
  humanURL: https://api-docs.affinity.co/
  baseURL: https://api.affinity.co
  tags:
  - persons
  properties:
  - type: OpenAPI
    url: openapi/affinity-persons-api-openapi.yml
  - type: Documentation
    url: https://developer.affinity.co/
common:
  - type: AgenticAccess
    url: agentic-access/affinity-agentic-access.yml
  - type: TrustCenter
    url: security/affinity-trust-center.yml
  - type: DomainSecurity
    url: security/affinity-domain-security.yml
  - type: Authentication
    url: authentication/affinity-authentication.yml
  - type: Website
    url: https://www.affinity.co/
  - type: Documentation
    url: https://developer.affinity.co/
  - type: GitHubOrg
    url: https://github.com/affinity
  - type: LinkedIn
    url: https://www.linkedin.com/company/project-affinity
  - type: Blog
    url: https://www.affinity.co/resources/blog
  - type: Pricing
    url: https://www.affinity.co/product/affinity-pricing
  - type: StatusPage
    url: https://status.affinity.co/
  - type: X
    url: https://x.com/affinity
  - type: Plans
    url: plans/affinity-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/affinity-rate-limits.yml
  - type: FinOps
    url: finops/affinity-finops.yml
  - type: Vocabulary
    url: vocabulary/affinity-vocabulary.yml
  - type: JSONLDContext
    url: json-ld/affinity-context.jsonld
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com
aid: affinity