# Sigil

> Programmatic-advertising supply verification: ads.txt, schain, ATAP receipts, cross_lens_verify.

- **Type:** MCP server
- **Install:** `agentstack add mcp-tunnelmind-sigil-mcp`
- **Verified:** Pending review
- **Seller:** [TunnelMind](https://agentstack.voostack.com/s/tunnelmind)
- **Installs:** 0
- **Latest version:** 0.2.0
- **License:** Apache-2.0
- **Upstream author:** [TunnelMind](https://github.com/TunnelMind)
- **Source:** https://github.com/TunnelMind/sigil-mcp

## Install

```sh
agentstack add mcp-tunnelmind-sigil-mcp
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

Programmatic-advertising supply verification: ads.txt, schain, ATAP receipts, cross_lens_verify.

## Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [TunnelMind](https://github.com/TunnelMind)
- **Source:** [TunnelMind/sigil-mcp](https://github.com/TunnelMind/sigil-mcp)
- **License:** Apache-2.0

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Versions

- **0.2.0** — security scan: pending review — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/mcp-tunnelmind-sigil-mcp
- Seller: https://agentstack.voostack.com/s/tunnelmind
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.