Twenty
Twenty is an open-source CRM platform built as a modern alternative to Salesforce, designed for teams that need flexibility, data ownership, and a contemporary developer experience. It provides REST and GraphQL APIs covering core CRM operations such as managing companies, people, opportunities, notes, tasks, and fully customizable objects. Developers can extend Twenty with custom objects, server-side logic, UI components, and AI agents as TypeScript packages, all surfaced through the same API surface. The platform is available as a cloud service or as a self-hosted deployment via Docker Compose, giving teams full control over their data residency and infrastructure.
Twenty publishes 9 APIs on the APIs.io network, including companies API, fields API, notes API, and 6 more. Tagged areas include CRM, Open-Source, REST, GraphQL, and Webhook.
The Twenty catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Twenty’s developer surface includes authentication, documentation, engineering blog, pricing, and 14 more developer resources.
Kin Score
APIs 9
Individual APIs this provider publishes, each with its own machine-readable definition.
Twenty companies API
Company CRM records
Twenty fields API
Custom field metadata management
Twenty notes API
Note records associated with CRM objects
Twenty objects API
Custom object metadata management
Twenty openapi API
OpenAPI schema discovery
Twenty opportunities API
Opportunity/deal CRM records
Twenty people API
Person/contact CRM records
Twenty relations API
Custom relation metadata management
Twenty tasks API
Task records associated with CRM objects
Scroll for all 9
Open Collections 10
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONTwenty Core companies API
OPEN COLLECTIONTwenty Core companies fields API
OPEN COLLECTIONTwenty Core companies notes API
OPEN COLLECTIONTwenty Core companies objects API
OPEN COLLECTIONTwenty Core companies openapi API
OPEN COLLECTIONTwenty Core companies opportunities API
OPEN COLLECTIONTwenty Core companies people API
OPEN COLLECTIONTwenty Core companies relations API
OPEN COLLECTIONTwenty Core companies tasks API
OPEN COLLECTIONScroll for all 10
GraphQL 1
GraphQL schemas published by this provider.
Twenty CRM GraphQL API
Twenty exposes two GraphQL endpoints for every workspace: the Core API at `/graphql` and the Metadata API at `/metadata`. The Core API is schema-per-tenant — the types and field...
GRAPHQLPricing Plans 1
Published pricing tiers and plan structures.
Twenty Plans Pricing
PLANSRate Limits 1
Documented rate limits and quota policies.
Twenty Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Twenty Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Twenty Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Twenty API Rules
SPECTRALJSON Schema 3
Standalone JSON Schema definitions for this provider's data models.
Examples 3
Example request and response payloads for these APIs.
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 2
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 3
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
Other 1
Properties that don't map to a standard resource type
Source (apis.yml)
Work with this as data
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MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for providers
9 MCP tools reach this
find_providersBrowse and filter every provider in the catalog.get_provider_artifactsEvery artifact this provider publishes, grouped by type.get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.get_provider_toolsEvery MCP tool they ship, with the operation each wraps.get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.get_provider_ratingPRO — composite, band, trend and facet scores.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.
Call it yourself
curl for this page
curl "https://apis.io/api/v1/providers/twenty"
curl "https://apis.io/api/v1/providers?limit=25"
curl "https://apis.io/api/v1/providers/twenty/operations?limit=25"
curl "https://apis.io/api/v1/providers/twenty/evidence"
Discovery needs no key. Ratings and market analysis are Pro.