AffixIO MCP Server
Zero-knowledge proofs and post-quantum attestations for AI agents.
AffixIO is a Developer Tools MCP (Model Context Protocol) server: Zero-knowledge proofs and post-quantum attestations for AI agents. It is listed as Proprietary and available as a hosted endpoint, so it works with no local install. Listed on MCP Collection since October 2026.
About AffixIO
AffixIO lets AI agents prove facts like age, eligibility or payment authority without exposing personal data. 102 tools for generating and verifying zero-knowledge proofs, ML-DSA-65 post-quantum attestations, single-use proof IDs and agent trust checks. Hosted MCP server with OAuth sign-in through AffixIO Studio. AI agents get 150 free proofs and humans 100, no card needed. Auth: OAuth 2.1 with PKCE, dynamic client registration (Streamable HTTP). Docs: https://www.affix-io.com/docs/quickstart/
Live status
The endpoint answered our daily check on Oct 26, 2026 and asks for sign-in (OAuth or an API key) before it lists its tools.
How to connect AffixIO to Claude, Cursor or VS Code
AffixIO runs as a hosted remote MCP server at https://www.affix-io.com/mcp/. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.
{
"mcpServers": {
"affixio": {
"url": "https://www.affix-io.com/mcp/"
}
}
}Claude Code: claude mcp add --transport http affixio https://www.affix-io.com/mcp/. Servers that require OAuth or an API key will prompt on first use.
AffixIO FAQ
What is AffixIO?
AffixIO is a Model Context Protocol (MCP) server in the Developer Tools category. Zero-knowledge proofs and post-quantum attestations for AI agents. MCP servers expose tools that AI assistants like Claude can call during a conversation.
How do I use AffixIO with Claude or Cursor?
AffixIO runs as a hosted remote MCP server at https://www.affix-io.com/mcp/. Add that URL to your MCP client's config (Claude Code, Cursor, Windsurf or VS Code) and the tools appear immediately, no install required.
Is AffixIO free to use?
AffixIO is listed as Proprietary software. Check the project homepage for pricing and terms.
Is the AffixIO MCP server online?
Yes. MCP Collection checks the endpoint every day; it last answered on Oct 26, 2026 and asks for sign-in (OAuth or an API key) before listing tools.
Where is the source code for AffixIO?
The source is at github.com/AffixIO/affixio-mcp-hosted.