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mcp/harbor
Verified official

POPCORN Witness Verifier MCP

v2.0.1

io.github.violetclaire/popcorn-tain-verifier

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

transport:streamable-http tools:1
View source Website

Target client

run in your project directory 

claude mcp add --transport http popcorn-tain-verifier https://popcorn-tain-verify-mcp-v2.violetherod.workers.dev/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

popcorn_verify_v2

popcorn verify v2

All 1 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.