XMTP
Open messaging protocol for encrypted chats between wallets, apps and agents, used by Base App, World App and Convos.
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XMTP key facts
| Category | Web3 messaging |
|---|---|
| Platforms | API, SDK |
| Fees | Paid by apps in USDC; estimated $5 per 100,000 messages |
| Open source | Yes, public repositories on GitHub |
What is XMTP?
XMTP is an open messaging protocol for encrypted direct and group chats between wallets, people and AI agents. Apps such as Convos, World App and Base App build on it through SDKs for browser, Node, React Native, iOS and Android. Apps pay network fees in USDC, estimated at $5 per 100,000 messages.
XMTP pros and cons
- Quantum-resistant, end-to-end encrypted messages
- SDKs for browser, Node, React Native, iOS and Android
- Code public on GitHub (108 repositories)
- A protocol, not an app: end users need Convos or another client
- Apps pay network fees in USDC, about $5 per 100,000 messages
- Fee figure is an estimate, not a fixed price
XMTP FAQ
What is XMTP?
XMTP is an open messaging protocol for encrypted direct and group chats between wallets, people and AI agents. Apps such as Convos, World App and Base App build on it through SDKs for browser, Node, React Native, iOS and Android. Apps pay network fees in USDC, estimated at $5 per 100,000 messages.
How much does XMTP cost?
Paid by apps in USDC; estimated $5 per 100,000 messages, according to XMTP’s own page (checked Sep 26, 2026).
Sources
How this page works
Sources: XMTP: official site, XMTP Docs: Calculate fees, XMTP: GitHub organization. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.