# Apollo.io

**Canonical:** https://apis.io/providers/apollo-enrich/  
**Website:** https://www.apollo.io  
**APIs profiled:** 7

Apollo.io is a sales intelligence and engagement platform built on a B2B database of hundreds of millions of contacts and companies. Its REST API exposes People Enrichment (single and bulk match), People Search, Organization Enrichment and Search, Contacts and Accounts management, and Sequences (emailer campaigns) for outreach - covering contact discovery, data enrichment, prospecting, and sales intelligence use cases. The API is authenticated with an x-api-key header and is gated behind Apollo's paid plans (API access begins on the Professional tier; some endpoints require a master API key).

## Kin Score — 40.7 / 100 (developing)

Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.4 from 41.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 56.3 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 34.2 |
| Developer Ergonomics | 23.8 |
| Commercial Clarity | 50.0 |
| Access Clarity | 50.0 |

## Agent readiness — 22.3 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## APIs (7)

- **Apollo.io Accounts API** — Manage accounts (companies) saved to your Apollo team.
- **Apollo.io Contacts API** — Manage contacts saved in your Apollo account.
- **Apollo.io Organization Enrichment API** — Match and enrich company records, single or in bulk.
- **Apollo.io Organization Search API** — Search Apollo's company database.
- **Apollo.io People Enrichment API** — Match and enrich person records, single or in bulk.
- **Apollo.io People Search API** — Search Apollo's people database for prospects.
- **Apollo.io Sequences API** — Manage sequences (emailer campaigns) and outreach emails.

## Agentic access (1)

- **Apollo Enrich Agentic Access** — 14 operations · 13 acting

## Security (1)

- **Apollo Enrich Authentication** — apiKey · 1 scheme

## Plans (1)

- **Apollo Enrich Plans Pricing**

## Tags

Contact Discovery, Data Enrichment, Sales Intelligence, B2B Data, Prospecting, Web Intelligence, Lead Generation, People Search

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