Apollo · GraphQL Specification

Apollo.io GraphQL API

Apollo.io provides a GraphQL API alongside its REST API, accessible at `https://api.apollo.io/api/v1/`. The GraphQL interface exposes the full breadth of Apollo's B2B sales intelligence platform — contacts, organizations, sequences, tasks, opportunities, accounts, deals, users, teams, email templates, enrichment, and webhooks — in a single queryable schema.

Documentation Endpoint View on GitHub Artificial IntelligenceB2B SalesCRMData EnrichmentLead GenerationSales IntelligenceSales PlatformGraphQL

Overview

Apollo.io GraphQL API is a GraphQL API specification published by Apollo on the APIs.io network.

Apollo.io provides a GraphQL API alongside its REST API, accessible at https://api.apollo.io/api/v1/. The GraphQL interface exposes the full breadth of Apollo’s B2B sales intelligence platform — contacts, organizations, sequences, tasks, opportunities, accounts, deals, users, teams, email templates, enrichment, and webhooks — in a single queryable schema.

Tagged areas include Artificial Intelligence, B2B Sales, CRM, Data Enrichment, and Lead Generation.

Endpoint

Related API Specs

Apollo Accounts API (OpenAPI) Apollo Contacts API (OpenAPI) Apollo Email Accounts API (OpenAPI) Apollo Emailer Campaigns API (OpenAPI) Apollo Mixed Companies API (OpenAPI) Apollo Mixed People API (OpenAPI) Apollo Opportunities API (OpenAPI) Apollo Organizations API (OpenAPI) Apollo People API (OpenAPI) Apollo Phone Calls API (OpenAPI) Apollo Sync Report API (OpenAPI) Apollo Tasks API (OpenAPI) Apollo Usage Stats API (OpenAPI) Apollo Users API (OpenAPI)
Back to Apollo · All GraphQL Specs · GitHub

Work with this as data

Every GraphQL schema here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for graphql

4 MCP tools reach this
  • find_graphqlBrowse and filter every GraphQL schema in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This GraphQL schema 
curl "https://apis.io/api/v1/graphql/apollo-graphql"
All graphql 
curl "https://apis.io/api/v1/graphql?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.