XMTP

name: XMTP
description: XMTP (Extensible Message Transport Protocol) is a decentralized, open messaging protocol that enables end-to-end
  encrypted communication between Ethereum wallet addresses and other decentralized identifiers. Built on MLS (Messaging Layer
  Security), XMTP provides developer SDKs and a gRPC-based network API for sending encrypted messages in decentralized applications,
  AI agents, and Web3 wallets without relying on centralized servers.
image: https://xmtp.org/img/xmtp-icon.png
tags:
- Web3
- Messaging
- Encryption
- Decentralized
- Ethereum
- MLS
- Wallets
- Agents
url: https://xmtp.org
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
apis:
- name: XMTP Network gRPC API
  description: Core gRPC-based API for the XMTP decentralized messaging network. Provides operations for sending and retrieving
    encrypted group messages, managing MLS key packages, publishing identity updates, and streaming real-time message events.
    All messages are end-to-end encrypted using the MLS protocol standard. Node operators expose this API over TLS-secured
    public DNS endpoints.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://docs.xmtp.org
  baseURL: grpc://grpc.xmtp.network
  tags:
  - gRPC
  - Messaging
  - Encryption
  - MLS
  - Web3
  properties:
  - type: Documentation
    url: https://docs.xmtp.org
  - type: OpenAPI
    url: https://github.com/xmtp/proto
  - type: ProtocolBuffers
    url: https://github.com/xmtp/proto
  - type: GettingStarted
    url: https://docs.xmtp.org/chat-apps/intro/get-started
  - type: LibXMTPDocs
    url: https://xmtp-libxmtp.mintlify.app/api/xmtp-api
  - type: NodeImplementation
    url: https://github.com/xmtp/xmtpd
  - type: NetworkStatus
    url: https://status.xmtp.org
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP JavaScript/TypeScript SDK
  description: Client SDK for browsers and Node.js enabling applications to send and receive end-to-end encrypted messages
    via the XMTP network. Supports wallet-based authentication (EVM-compatible wallets using ECDSA signing), group conversations,
    message streaming, consent management, and rich content types including text, attachments, reactions, and read receipts.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://github.com/xmtp/xmtp-js
  baseURL: https://xmtp.network
  tags:
  - JavaScript
  - TypeScript
  - SDK
  - Browser
  - Node.js
  - Messaging
  properties:
  - type: Documentation
    url: https://docs.xmtp.org/chat-apps/intro/get-started
  - type: GitHubRepository
    url: https://github.com/xmtp/xmtp-js
  - type: GettingStarted
    url: https://docs.xmtp.org/chat-apps/intro/get-started
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP Agent SDK
  description: Node.js SDK tailored for building AI agents and bots on the XMTP network. Enables agents to participate in
    XMTP conversations, respond to messages, and interact with users through encrypted decentralized messaging channels. Designed
    for autonomous agent deployments that need secure, censorship- resistant communication without centralized infrastructure
    dependencies.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://docs.xmtp.org
  baseURL: https://xmtp.network
  tags:
  - Agents
  - AI
  - Node.js
  - SDK
  - Automation
  properties:
  - type: Documentation
    url: https://docs.xmtp.org
  - type: GitHubRepository
    url: https://github.com/xmtp/agent-sdk-starter
  - type: GettingStarted
    url: https://docs.xmtp.org
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP Android SDK
  description: Native Kotlin SDK for integrating XMTP encrypted messaging into Android applications. Supports wallet-based
    identity, group conversations, message streaming, and the full XMTP content type system for rich media and transactional
    messages in mobile apps.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://github.com/xmtp/xmtp-android
  baseURL: https://xmtp.network
  tags:
  - Android
  - Kotlin
  - Mobile
  - SDK
  - Messaging
  properties:
  - type: Documentation
    url: https://docs.xmtp.org
  - type: GitHubRepository
    url: https://github.com/xmtp/xmtp-android
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP iOS SDK
  description: Native Swift SDK for integrating XMTP encrypted messaging into iOS applications. Provides wallet-based authentication,
    group conversations, real-time message streaming, and comprehensive content type support for building secure, decentralized
    messaging features in iOS and macOS apps.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://github.com/xmtp/xmtp-ios
  baseURL: https://xmtp.network
  tags:
  - iOS
  - Swift
  - Mobile
  - SDK
  - Messaging
  properties:
  - type: Documentation
    url: https://docs.xmtp.org
  - type: GitHubRepository
    url: https://github.com/xmtp/xmtp-ios
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP React Native SDK
  description: Cross-platform SDK for building XMTP encrypted messaging into React Native and Expo applications. Bridges the
    libxmtp core library to JavaScript, enabling wallet-based messaging, group chats, streaming, and rich content types in
    cross-platform mobile applications targeting both iOS and Android.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://github.com/xmtp/xmtp-react-native
  baseURL: https://xmtp.network
  tags:
  - React Native
  - Expo
  - Mobile
  - SDK
  - Cross-Platform
  properties:
  - type: Documentation
    url: https://docs.xmtp.org
  - type: GitHubRepository
    url: https://github.com/xmtp/xmtp-react-native
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
- name: XMTP App Chain RPC API
  description: JSON-RPC API for the XMTP Layer-3 appchain built on Arbitrum and settling to Base. Used for smart contract
    interactions including group management, identity updates, node registration, and fee payments in USDC. Compatible with
    standard Ethereum JSON-RPC tooling via providers like Alchemy. Chain ID 2020 with ETH as native currency.
  image: https://xmtp.org/img/xmtp-icon.png
  humanURL: https://www.alchemy.com/docs/reference/xmtp-api-quickstart
  baseURL: https://xmtp-mainnet.g.alchemy.com/v2
  tags:
  - JSON-RPC
  - Blockchain
  - Ethereum
  - Layer-3
  - Smart Contracts
  properties:
  - type: Documentation
    url: https://www.alchemy.com/docs/reference/xmtp-api-quickstart
  - type: GettingStarted
    url: https://www.alchemy.com/docs/reference/xmtp-api-quickstart
  - type: Plans
    url: https://xmtp.org/xmtp/plans.yml
  - type: RateLimits
    url: https://xmtp.org/xmtp/rate-limits.yml
  - type: FinOps
    url: https://xmtp.org/xmtp/finops.yml
  contact:
  - FN: XMTP Support
    email: contact@xmtp.org
    url: https://community.xmtp.org
common:
- type: GitHub
  url: https://github.com/xmtp
- type: Blog
  url: https://blog.xmtp.org
- type: Community
  url: https://community.xmtp.org
- type: Status
  url: https://status.xmtp.org
- type: ImprovementProposals
  url: https://github.com/xmtp/XIPs
- type: DecentralizationRoadmap
  url: https://xmtp.org/decentralization
- type: FeeCalculator
  url: https://docs.xmtp.org/fund-agents-apps/calculate-fees
- type: TermsOfService
  url: https://xmtp.org/terms
- type: PrivacyPolicy
  url: https://xmtp.org/privacy
- type: Contact
  url: https://community.xmtp.org
maintainers:
- FN: XMTP Labs
  email: contact@xmtp.org
  url: https://xmtp.org