# Affinity

**Canonical:** https://apis.io/providers/affinity/  
**Website:** https://www.affinity.co/  
**APIs profiled:** 11

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.

## Kin Score — 50.1 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 50.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 65.9 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 52.6 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 57.9 |
| Access Clarity | 57.9 |

## Agent readiness — 38.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Paid · Self-serve signup — onboarding: self-serve, pricing: paid, trial: no (confidence: high).

## APIs (11)

- **Affinity API V1** — The legacy Affinity V1 API provides comprehensive read and write access to core CRM data including persons, organizations, opportunities, lists, notes, interactions, reminders, ...
- **Affinity auth API** — Operations about auths
- **Affinity companies API** — Operations about companies
- **Affinity companyMerges API** — Operations about company merges
- **Affinity emails API** — Operations about emails
- **Affinity lists API** — Operations about lists
- **Affinity meetings API** — Operations about meetings
- **Affinity notes API** — Operations about notes
- **Affinity opportunities API** — Operations about opportunities
- **Affinity personMerges API** — Operations about person merges
- **Affinity persons API** — Operations about persons

## Agentic access (1)

- **Affinity Agentic Access** — 46 operations · 4 acting

## Security (3)

- **Affinity Authentication** — http · 1 scheme
- **Affinity Domain Security** — TLSv1.3 · HSTS · DMARC
- **Affinity Trust Center** — SOC 2, ISO 27001, ISO 27017, ISO 27018

## Plans (1)

- **Affinity Plans Pricing**

## Tags

CRM, Relationship Intelligence, Private Equity, Venture Capital, Contacts, Organization, Opportunities, Deal Management

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/affinity/). Scores are computed from the provider's own public artifacts under a published rubric.