Apollo.io

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.

Apollo.io publishes 13 APIs on the APIs.io network, including Enrichment API, Search API, Accounts API, and 10 more. Tagged areas include Sales Intelligence, Prospecting, Engagement, B2B Data, and Enrichment.

The Apollo.io catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Apollo.io’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 34 more developer resources.

🌐 Visit website 📡 Source on GitHub

64.7/100 strong ▬ flat Agent 52/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreemium

14 APIs 1 MCP Servers 12 Features

Sales IntelligenceProspectingEngagementB2B DataEnrichmentCRMSales EngagementConversation IntelligenceMCPSoftware-as-a-Service

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 64.7/100 · strong

Contract Quality 17.5 / 25

Developer Ergonomics 10.5 / 20

Access Clarity 20.0 / 20

Operational Transparency 5.5 / 13

Contract Governance 2.0 / 12

Discoverability 9.3 / 10

Agent readiness — 52/100 · 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 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/apollo-io: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 14

Individual APIs this provider publishes, each with its own machine-readable definition.

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...

Scroll for all 14

Open Collections 13

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

Apollo.io Accounts API

OPEN COLLECTION

Apollo.io Analytics API

OPEN COLLECTION

Apollo.io Calls API

OPEN COLLECTION

Apollo.io Contacts API

OPEN COLLECTION

Apollo.io Conversations API

OPEN COLLECTION

Apollo.io Deals API

OPEN COLLECTION

Apollo.io Emailer Messages API

OPEN COLLECTION

Apollo.io Enrichment API

OPEN COLLECTION

Apollo.io Fields API

OPEN COLLECTION

Apollo.io Miscellaneous API

OPEN COLLECTION

Apollo.io Search API

OPEN COLLECTION

Apollo.io Sequences API

OPEN COLLECTION

Apollo.io Tasks API

OPEN COLLECTION

Scroll for all 13

MCP Servers 1

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

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...

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Apollo Io Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Apollo Io Rate Limits

12 limits

RATE LIMITS

FinOps 1

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

Apollo Io Finops

FINOPS

Features 12

Notable capabilities this provider offers.

REST API at https://api.apollo.io/api/v1 — 80 operations, OpenAPI 3.1.0 published at https://docs.apollo.io/openapi/apollo-rest-api.json

API key authentication via the x-api-key header; keys are scoped to an explicit endpoint list or marked master

OAuth 2.0 authorization-code flow for partners, with 70 named scopes

Hosted remote MCP server at https://mcp.apollo.io/mcp over Streamable HTTP with OAuth 2.0 — no API key, no local install

First-party Apollo CLI (Homebrew tap and signed prebuilt binaries) with OAuth login

Five provider-published agent skills — four in the MCP plug-in, one for the CLI

240M+ contacts and 30M+ companies searchable; enrichment is metered in credits

Rate limits are per team and per endpoint, enforced in per-minute, per-hour and per-day windows, surfaced in x-rate-limit-* response headers

Bulk enrichment endpoints take up to 10 records per call

Asynchronous enrichment callbacks via webhook_url, with a 30-day poll-by-request_id fallback

No sandbox host and no test mode — testing happens against production with a real key

No client SDKs; Apollo documents generating one from the OpenAPI instead

Scroll for all 12

Scopes 1

OAuth scopes governing access to this provider's APIs.

Apollo Io Scopes

91 scopes · authorizationCode

91 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Apollo Io Agentic Access

80 operations · 54 acting · 1 human-in-the-loop

80 operations · 54 acting

AGENTIC

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

AgenticAccess

WellKnown

LLMsTxt

LlmsText

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Lifecycle

Webhooks

Conventions

ErrorCatalog

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

CLI

CLI

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

Compliance

TrustCenter

DomainSecurity

Authentication

Authentication

OAuthScopes

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

RateLimits

RateLimits

Commercial 5

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Source (apis.yml)

aid: apollo-io
url: https://raw.githubusercontent.com/api-evangelist/apollo-io/refs/heads/main/apis.yml
name: Apollo.io
kind: company
description: 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.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/apollo-io.png
tags:
- Sales Intelligence
- Prospecting
- Engagement
- B2B Data
- Enrichment
- CRM
- Sales Engagement
- Conversation Intelligence
- MCP
- Software-as-a-Service
tags_raw:
- Sales Intelligence
- Prospecting
- Engagement
- B2B Data
- Enrichment
- CRM
- Sales Engagement
- Conversation Intelligence
- MCP
- SaaS
created: '2026-05-08'
modified: '2026-08-13'
specificationVersion: '0.23'
apis:
- aid: apollo-io:apollo-io-enrichment-api
  name: Apollo.io Enrichment API
  description: People and company enrichment, single and bulk. 4 operation(s) from the published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/people-enrichment
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Enrichment
  - People
  - Organization
  - Bulk
  tags_raw:
  - Enrichment
  - People
  - Organizations
  - Bulk
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-enrichment-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-enrichment-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/people-enrichment
- aid: apollo-io:apollo-io-search-api
  name: Apollo.io Search API
  description: Database search across Apollo's people, company, job-posting and news data. 6 operation(s) from the published
    Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/people-api-search
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Search
  - Prospecting
  - People
  - Organization
  tags_raw:
  - Search
  - Prospecting
  - People
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-search-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-search-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/people-api-search
- aid: apollo-io:apollo-io-accounts-api
  name: Apollo.io Accounts API
  description: Workspace CRM accounts — create, update, search, stages and ownership. 8 operation(s) from the published Apollo
    OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-for-accounts
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Account
  - CRM
  tags_raw:
  - Accounts
  - CRM
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-accounts-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-accounts-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-for-accounts
- aid: apollo-io:apollo-io-contacts-api
  name: Apollo.io Contacts API
  description: Workspace CRM contacts — create, update, search, stages and ownership. 10 operation(s) from the published Apollo
    OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-for-contacts
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Contacts
  - CRM
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-contacts-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-contacts-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-for-contacts
- aid: apollo-io:apollo-io-deals-api
  name: Apollo.io Deals API
  description: Deals (opportunities), their stages, and the deals attached to a contact. 5 operation(s) from the published
    Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/list-all-deals
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Deals
  - Opportunities
  - Pipeline
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-deals-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-deals-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/list-all-deals
- aid: apollo-io:apollo-io-sequences-api
  name: Apollo.io Sequences API
  description: Outreach sequences — create, update, approve, abort, archive, enrollment and activity. 12 operation(s) from
    the published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-for-sequences
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Sequences
  - Cadences
  - Outreach
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-sequences-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-sequences-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-for-sequences
- aid: apollo-io:apollo-io-emailer-messages-api
  name: Apollo.io Emailer Messages API
  description: One-off email drafting, sending, send status and content retrieval. 4 operation(s) from the published Apollo
    OpenAPI.
  humanURL: https://docs.apollo.io/reference/create-an-email-draft
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Email
  - Outreach
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-emailer-messages-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-emailer-messages-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/create-an-email-draft
- aid: apollo-io:apollo-io-tasks-api
  name: Apollo.io Tasks API
  description: Tasks against contacts, accounts and deals — create, search, update, complete, skip. 7 operation(s) from the
    published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-tasks
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Task
  - Engagement
  tags_raw:
  - Tasks
  - Engagement
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-tasks-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-tasks-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-tasks
- aid: apollo-io:apollo-io-calls-api
  name: Apollo.io Calls API
  description: Phone-call records — log, search and update dialer activity. 3 operation(s) from the published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-for-calls
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Calls
  - Telephony
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-calls-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-calls-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-for-calls
- aid: apollo-io:apollo-io-conversations-api
  name: Apollo.io Conversations API
  description: Conversation intelligence — search recorded calls and meetings, read insights, export. 4 operation(s) from
    the published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/search-conversations
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Conversations
  - Call Recording
  - Artificial Intelligence
  tags_raw:
  - Conversations
  - Call Recording
  - AI
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-conversations-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-conversations-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/search-conversations
- aid: apollo-io:apollo-io-analytics-api
  name: Apollo.io Analytics API
  description: The Query Analytics Report endpoint — metrics, dimensions and filters over engagement data. 1 operation(s)
    from the published Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/sync-report
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Analytics
  - Reporting
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-analytics-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-analytics-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/sync-report
- aid: apollo-io:apollo-io-fields-api
  name: Apollo.io Fields API
  description: Field and custom-field definitions across contacts, accounts and opportunities. 4 operation(s) from the published
    Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/get-a-list-of-fields
  baseURL: https://api.apollo.io/api/v1
  tags:
  - Custom Fields
  - Metadata
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-fields-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-fields-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/get-a-list-of-fields
- aid: apollo-io:apollo-io-miscellaneous-api
  name: Apollo.io Miscellaneous API
  description: Users, email accounts, lists and labels, notes, usage stats and webhook results. 12 operation(s) from the published
    Apollo OpenAPI.
  humanURL: https://docs.apollo.io/reference/get-a-list-of-users
  baseURL: https://api.apollo.io/api/v1
  tags:
  - User
  - List
  - Usage
  - Webhook
  tags_raw:
  - Users
  - Lists
  - Usage
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/apollo-io-miscellaneous-api-openapi.yml
  - type: Overlay
    url: overlays/apollo-io-miscellaneous-overlay.yaml
  - type: Documentation
    url: https://docs.apollo.io/
  - type: APIReference
    url: https://docs.apollo.io/reference/get-a-list-of-users
- aid: apollo-io:apollo-mcp
  name: Apollo MCP Server
  description: 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 actions across search, enrichment, CRM, sequences,
    tasks, conversations and analytics. tools/list is OAuth-gated; the 401 challenge enumerates all 70 scopes.
  humanURL: https://docs.apollo.io/docs/apollo-mcp
  baseURL: https://mcp.apollo.io/mcp
  tags:
  - MCP
  - Agents
  - Artificial Intelligence
  tags_raw:
  - MCP
  - Agents
  - AI
  properties:
  - type: MCPServer
    url: mcp/apollo-io-mcp.yml
  - type: ToolCrosswalk
    url: mcp/apollo-io-tool-crosswalk.yml
  - type: AgentSkill
    url: skills/_index.yml
  - type: Documentation
    url: https://docs.apollo.io/docs/apollo-mcp
  - type: SourceCode
    url: https://github.com/apolloio/apollo-mcp-plugin
common:
- type: Website
  url: https://www.apollo.io/
- type: LinkedIn
  url: https://www.linkedin.com/company/apolloio
- type: DeveloperPortal
  url: https://developer.apollo.io/
- type: Documentation
  url: https://docs.apollo.io/
- type: APIReference
  url: https://docs.apollo.io/reference/apollo-api
- type: GettingStarted
  url: https://docs.apollo.io/docs/build-with-apollo
- type: Support
  url: https://knowledge.apollo.io/
- type: Blog
  url: https://www.apollo.io/blog
- type: GitHubOrganization
  url: https://github.com/apolloio
- type: Integrations
  url: https://www.apollo.io/partners
- type: Pricing
  url: https://www.apollo.io/pricing
- type: SignUp
  url: https://www.apollo.io/lp/sign-up
- type: Login
  url: https://app.apollo.io/
- type: TermsOfService
  url: https://www.apollo.io/terms/api
- type: PrivacyPolicy
  url: https://www.apollo.io/privacy-policy
- type: Compliance
  url: https://trust.apollo.io/
- type: TrustCenter
  url: security/apollo-io-trust-center.yml
- type: DomainSecurity
  url: security/apollo-io-domain-security.yml
- type: StatusPage
  url: https://status.apollo.io/
- type: Lifecycle
  url: lifecycle/apollo-io-lifecycle.yml
- type: Webhooks
  url: asyncapi/apollo-io-webhooks.yml
- type: Authentication
  url: authentication/apollo-io-authentication.yml
- type: Authentication
  url: https://docs.apollo.io/reference/authentication
- type: OAuthScopes
  url: scopes/apollo-io-scopes.yml
- type: Conventions
  url: conventions/apollo-io-conventions.yml
- type: ErrorCatalog
  url: errors/apollo-io-problem-types.yml
- type: DataModel
  url: data-model/apollo-io-data-model.yml
- type: Conformance
  url: conformance/apollo-io-conformance.yml
- type: RateLimits
  url: rate-limits/apollo-io-rate-limits.yml
- type: RateLimits
  url: https://docs.apollo.io/reference/rate-limits
- type: Plans
  url: plans/apollo-io-plans-pricing.yml
- type: FinOps
  url: finops/apollo-io-finops.yml
- type: Sandbox
  url: sandbox/apollo-io-sandbox.yml
- type: CLI
  url: cli/apollo-io-cli.yml
- type: Packages
  url: packages/apollo-io-packages.yml
- type: MCPServer
  url: mcp/apollo-io-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/apollo-io-agentic-access.yml
- type: WellKnown
  url: well-known/apollo-io-well-known.yml
- type: LLMsTxt
  url: llms/apollo-io-llms.txt
- type: LlmsText
  url: https://docs.apollo.io/llms.txt
- type: OpenAPI
  url: https://docs.apollo.io/openapi/apollo-rest-api.json
- type: Features
  data:
  - REST API at https://api.apollo.io/api/v1 — 80 operations, OpenAPI 3.1.0 published at https://docs.apollo.io/openapi/apollo-rest-api.json
  - API key authentication via the x-api-key header; keys are scoped to an explicit endpoint list or marked master
  - OAuth 2.0 authorization-code flow for partners, with 70 named scopes
  - Hosted remote MCP server at https://mcp.apollo.io/mcp over Streamable HTTP with OAuth 2.0 — no API key, no local install
  - First-party Apollo CLI (Homebrew tap and signed prebuilt binaries) with OAuth login
  - Five provider-published agent skills — four in the MCP plug-in, one for the CLI
  - 240M+ contacts and 30M+ companies searchable; enrichment is metered in credits
  - Rate limits are per team and per endpoint, enforced in per-minute, per-hour and per-day windows, surfaced in x-rate-limit-*
    response headers
  - Bulk enrichment endpoints take up to 10 records per call
  - Asynchronous enrichment callbacks via webhook_url, with a 30-day poll-by-request_id fallback
  - No sandbox host and no test mode — testing happens against production with a real key
  - No client SDKs; Apollo documents generating one from the OpenAPI instead
  sources:
  - https://docs.apollo.io/openapi/apollo-rest-api.json
  - https://docs.apollo.io/reference/rate-limits
  - https://docs.apollo.io/docs/apollo-mcp
  - https://www.apollo.io/pricing
  updated: '2026-08-13'
integrations:
- name: Affiliate Partners
  url: https://www.apollo.io/partners
- name: Solutions Partners
  url: https://www.apollo.io/partners
- name: Technology Partners
  url: https://www.apollo.io/partners
- name: Data Reseller Partners
  url: https://www.apollo.io/partners
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 50
  pass: local-v1

Apollo.io

APIs 14

Open Collections 13

MCP Servers 1

Pricing Plans 1

Rate Limits 1

FinOps 1

Features 12

Event Specifications 1

Security Posture 3

Scopes 1

Agentic Access 1

Get Started 5

Documentation 3

Agent Surfaces 6

Design & Contract 6

Build 3

Access & Security 6

Operate 4

Commercial 5

Company 3

Source (apis.yml)