Nylas

Nylas connects your application to every email inbox and calendar in the world. The Nylas v3 platform provides REST APIs for email, calendar, contacts, scheduling, authentication, and administration with official SDKs for Node.js, Python, Ruby, and Kotlin/Java.

Nylas publishes 10 APIs on the APIs.io network, including Admin API, Auth API, Calendars API, and 7 more. Tagged areas include Calendar, Communication, Contacts, Email, and Messaging.

Nylas’ developer surface includes authentication, documentation, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.4/100 developing ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

11 APIs

CalendarCommunicationContactsEmailMessagingScheduling

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 44.4/100 · developing

Contract Quality 12.4 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 13.7 / 20

Operational Transparency 6.8 / 13

Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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/nylas: 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 11

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

Rate Limits 1

Documented rate limits and quota policies.

Nylas Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 4

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: nylas
name: Nylas
description: Nylas connects your application to every email inbox and calendar in the world. The Nylas v3 platform provides
  REST APIs for email, calendar, contacts, scheduling, authentication, and administration with official SDKs for Node.js,
  Python, Ruby, and Kotlin/Java.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nylas.png
tags:
- Calendar
- Communication
- Contacts
- Email
- Messaging
- Scheduling
created: '2025-02-06'
modified: '2026-04-28'
url: https://raw.githubusercontent.com/api-evangelist/nylas/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: nylas:nylas-api
  name: Nylas API
  description: The Nylas v3 REST API provides programmatic access to email, calendar, contacts, scheduling, authentication,
    and administration features across every major email and calendar provider.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Calendar
  - Communication
  - Contacts
  - Email
  - Messaging
  - Scheduling
  properties:
  - type: Documentation
    url: https://developer.nylas.com/docs/
  - type: APIReference
    url: https://developer.nylas.com/docs/reference/api/
  - type: GettingStarted
    url: https://developer.nylas.com/docs/v3/getting-started/
  - type: Authentication
    url: https://developer.nylas.com/docs/v3/auth/
  - type: RateLimits
    url: https://developer.nylas.com/docs/dev-guide/platform/rate-limits/
  - type: ErrorCodes
    url: https://developer.nylas.com/docs/api/errors/
  - type: Pricing
    url: https://www.nylas.com/pricing/
  - type: Signup
    url: https://dashboard-v3.nylas.com/register
  - type: StatusPage
    url: https://status.nylas.com/
  - type: SDKs
    name: Node.js SDK
    url: https://github.com/nylas/nylas-nodejs
  - type: SDKs
    name: Python SDK
    url: https://github.com/nylas/nylas-python
  - type: SDKs
    name: Ruby SDK
    url: https://github.com/nylas/nylas-ruby
  - type: SDKs
    name: Java/Kotlin SDK
    url: https://github.com/nylas/nylas-java
- aid: nylas:nylas-admin-api
  name: Nylas Admin API
  description: The Admin API from Nylas — 3 operation(s) for admin.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Admin
  properties:
  - type: OpenAPI
    url: openapi/nylas-admin-api-openapi.yml
- aid: nylas:nylas-auth-api
  name: Nylas Auth API
  description: The Auth API from Nylas — 3 operation(s) for auth.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/nylas-auth-api-openapi.yml
- aid: nylas:nylas-calendars-api
  name: Nylas Calendars API
  description: The Calendars API from Nylas — 1 operation(s) for calendars.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Calendars
  properties:
  - type: OpenAPI
    url: openapi/nylas-calendars-api-openapi.yml
- aid: nylas:nylas-contacts-api
  name: Nylas Contacts API
  description: The Contacts API from Nylas — 1 operation(s) for contacts.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/nylas-contacts-api-openapi.yml
- aid: nylas:nylas-drafts-api
  name: Nylas Drafts API
  description: The Drafts API from Nylas — 1 operation(s) for drafts.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Drafts
  properties:
  - type: OpenAPI
    url: openapi/nylas-drafts-api-openapi.yml
- aid: nylas:nylas-events-api
  name: Nylas Events API
  description: The Events API from Nylas — 1 operation(s) for events.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/nylas-events-api-openapi.yml
- aid: nylas:nylas-grants-api
  name: Nylas Grants API
  description: The Grants API from Nylas — 2 operation(s) for grants.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Grants
  properties:
  - type: OpenAPI
    url: openapi/nylas-grants-api-openapi.yml
- aid: nylas:nylas-messages-api
  name: Nylas Messages API
  description: The Messages API from Nylas — 1 operation(s) for messages.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/nylas-messages-api-openapi.yml
- aid: nylas:nylas-scheduling-api
  name: Nylas Scheduling API
  description: The Scheduling API from Nylas — 3 operation(s) for scheduling.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Scheduling
  properties:
  - type: OpenAPI
    url: openapi/nylas-scheduling-api-openapi.yml
- aid: nylas:nylas-threads-api
  name: Nylas Threads API
  description: The Threads API from Nylas — 1 operation(s) for threads.
  humanURL: https://developer.nylas.com/
  baseURL: https://api.us.nylas.com
  tags:
  - Threads
  properties:
  - type: OpenAPI
    url: openapi/nylas-threads-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/nylas-agentic-access.yml
- type: TrustCenter
  url: security/nylas-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/nylas-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/nylas-domain-security.yml
- type: Authentication
  url: authentication/nylas-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/nylas
- type: Website
  url: https://www.nylas.com/
- type: Documentation
  url: https://developer.nylas.com/
- type: Blog
  url: https://www.nylas.com/blog/
- type: GitHubOrg
  url: https://github.com/nylas
- type: TermsOfService
  url: https://www.nylas.com/legal/terms/
- type: PrivacyPolicy
  url: https://www.nylas.com/legal/privacy-policy/
- type: StatusPage
  url: https://status.nylas.com/
- type: LlmsText
  url: https://developer.nylas.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Nylas

Kin Score

APIs 11

Nylas API

Nylas Admin API

Nylas Auth API

Nylas Calendars API

Nylas Contacts API

Nylas Drafts API

Nylas Events API

Nylas Grants API

Nylas Messages API

Nylas Scheduling API

Nylas Threads API

Open Collections 1

Nylas API (v3)

Pricing Plans 1

Nylas Plans Pricing

Rate Limits 1

Nylas Rate Limits

FinOps 1

Nylas Finops

Security Posture 4

Nylas Authentication

Nylas Domain Security

Nylas Vulnerability Disclosure

Nylas Trust Center

Agentic Access 1

Nylas Agentic Access

Resources