MCP server

POPCORN MCP

io.github.violetclaire/popcorn-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

RFC 3161 + authorization expiry: https://767-2676.com/prove-action-before-authorization-expired

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

7

Token cost

About 2,798 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http popcorn-mcp https://767-2676.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.popcorn-mcp]
url = "https://767-2676.com/mcp"

Gemini CLI

{"mcpServers":{"popcorn-mcp":{"httpUrl":"https://767-2676.com/mcp"}}}

Cursor

{"mcpServers":{"popcorn-mcp":{"url":"https://767-2676.com/mcp"}}}

VS Code

{"servers":{"popcorn-mcp":{"type":"http","url":"https://767-2676.com/mcp"}}}

Antigravity

agy mcp add popcorn-mcp https://767-2676.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"popcorn-mcp","server_url":"https://767-2676.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"popcorn-mcp","server_url":"https://767-2676.com/mcp"}

Tools

• popcorn_catalog ~74 tokens
  Read the live catalog, offer, and published verification keys. Free; no payment.
• popcorn_hash ~122 tokens
  Hash public bytes on this remote server. Submitted text reaches the server: hash private work locally instead. Free; no onward request or payment.
• popcorn_sample ~117 tokens
  Check the public October 14 TAIN 2.0 receipt and a changed-digest control. No inputs, wallet, payment, or outbound request. Historical evidence, not a fresh clock. Bundled sample keys do not independently establish issuer identity.
• popcorn_time ~246 tokens
  Request signed current-time evidence. Defaults to a free unpaid 402 challenge. A fresh receipt costs exactly $0.001 USDC on Base. Payment requires owner approval, approve_payment:true, and a caller-signed payment_signature. No server wallet or private key. No automatic retry. Verify evidence and acc
• popcorn_verify ~225 tokens
  Verify a time or witness receipt using caller-trusted JWKS and expected values. Digest-only for witness payloads. No outbound request or payment. Caller keys do not establish issuer identity; a signature grants no authority.
• popcorn_verify_v2 ~1719 tokens
  Verify TAIN 2.0 evidence against keys fetched from the fixed POPCORN issuer URL. Caller jwks is replaced with published keys, including predecessors. Send a digest, never private work. Free; does not grant authority, establish current time, or verify settlement on chain.
• popcorn_witness ~295 tokens
  Witness a SHA-256 digest and fresh caller nonce at a time. Defaults to a free unpaid 402 challenge. One fresh receipt costs exactly $0.001 USDC on Base; requires owner approval, approve_payment:true, and caller-signed payment_signature. Keep work and wallet keys local. No automatic retry. Evidence d

Browse

• GitHub tools
• Payments
• GitHub and code hosting

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