POPCORN Witness Verifier for Claude.ai

io.github.violetclaire/popcorn-tain-verifier

MCP server for verifying receipts: POPCORN-WITNESS/2.0 signature, digest, and time. Free, read only.

client:Claude.ai transport:streamable-http tools:1

Install POPCORN Witness Verifier in Claude.ai

Settings → Connectors → Add custom connector

https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

popcorn_verify_v2

POPCORN Witness Verifier in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

POPCORN Witness Verifier MCP server