# Apollo.io

**Canonical:** https://apis.io/providers/apollo-io/  
**Website:** https://www.apollo.io/  
**APIs profiled:** 14

Apollo.io is a sales intelligence and go-to-market platform combining a database of 240M+ contacts and 30M+ companies with enrichment, sequencing, dialing and conversation intelligence. Its REST API publishes 80 operations at https://api.apollo.io/api/v1 across people and company search, single and bulk enrichment, CRM accounts, contacts and deals, outreach sequences, one-off emails, tasks, calls, conversations, custom fields, lists, analytics and usage stats — described by a first-party OpenAPI 3.1.0 document. Apollo also ships a hosted MCP server, a first-party CLI, and provider-published agent skills for both.

## Kin Score — 64.7 / 100 (strong)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 64.7).

| Facet | Score |
|---|---|
| Discoverability | 92.6 |
| Contract Quality | 69.9 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 42.1 |
| Developer Ergonomics | 52.4 |
| Commercial Clarity | 100.0 |
| Access Clarity | 100.0 |

## Agent readiness — 52.0 (agent-ready)

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

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (14)

- **Apollo.io Enrichment API** — People and company enrichment, single and bulk. 4 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Search API** — Database search across Apollo's people, company, job-posting and news data. 6 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Accounts API** — Workspace CRM accounts — create, update, search, stages and ownership. 8 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Contacts API** — Workspace CRM contacts — create, update, search, stages and ownership. 10 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Deals API** — Deals (opportunities), their stages, and the deals attached to a contact. 5 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Sequences API** — Outreach sequences — create, update, approve, abort, archive, enrollment and activity. 12 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Emailer Messages API** — One-off email drafting, sending, send status and content retrieval. 4 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Tasks API** — Tasks against contacts, accounts and deals — create, search, update, complete, skip. 7 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Calls API** — Phone-call records — log, search and update dialer activity. 3 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Conversations API** — Conversation intelligence — search recorded calls and meetings, read insights, export. 4 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Analytics API** — The Query Analytics Report endpoint — metrics, dimensions and filters over engagement data. 1 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Fields API** — Field and custom-field definitions across contacts, accounts and opportunities. 4 operation(s) from the published Apollo OpenAPI.
- **Apollo.io Miscellaneous API** — Users, email accounts, lists and labels, notes, usage stats and webhook results. 12 operation(s) from the published Apollo OpenAPI.
- **Apollo MCP Server** — Apollo's hosted Model Context Protocol server. A remote Streamable-HTTP endpoint at https://mcp.apollo.io/mcp, authenticated with OAuth 2.0 and no API key, exposing 51 published...

## MCP servers (1)

- **Apollo.io MCP Server** — Prospect, enrich leads, and manage outreach sequences with Apollo.io. Connects Apollo's contact database, real-time enrichment engine, and sales engagement surface to an MCP cli...

## Agentic access (1)

- **Apollo Io Agentic Access** — 80 operations · 54 acting · 1 human-in-the-loop

## Security (3)

- **Apollo Io Authentication** — apiKey/http · 2 schemes
- **Apollo Io Domain Security** — TLSv1.3 · HSTS · DMARC
- **Apollo Io Trust Center** — SOC 2, ISO 27001, GDPR

## Plans (1)

- **Apollo Io Plans Pricing**

## Tags

Sales Intelligence, Prospecting, Engagement, B2B Data, Enrichment, CRM, Sales Engagement, Conversation Intelligence, MCP, Software-as-a-Service

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