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sigil-mcp

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sigil-mcp

Part of TunnelMind — the intelligence layer agents call before they trust the internet. Three lenses on one signed corpus: Scry (who is attacking?) · Sigil (who can you trust?) · Tracker Data API (who is watching?). This repo serves: Sigil — the MCP-tool surface agents call to verify ad-tech supply paths. See tunnelmind.ai.

MCP server for Sigil — TunnelMind's agentic supply-chain verification layer for programmatic advertising (P35).

Sigil ships as a separate MCP surface (P35 Shape B). One Cloudflare Worker, two hosts:

Host

Serves

mcp.sigil.tunnelmind.ai/mcp

Streamable-HTTP MCP endpoint (JSON-RPC 2.0)

sigil.tunnelmind.ai/.well-known/mcp.json

Discovery card (mcp-server-card/1.0-draft)

The Worker is a thin agent-facing wrapper: every tool proxies the live Sigil API at data.tunnelmind.ai/v1/sigil/* over a Cloudflare service binding. The Authorization header on an MCP request is forwarded — a paid TunnelMind key gets its tier, anonymous callers get the free tier. Discovery is unauthenticated.

Tools

Tool

Purpose

cross_lens_verify

A2 — fused Scry × Sigil verdict on one node key (IP / domain / entity / ASN). The moat: both lenses, one answer.

sigil_verify_supply_path

Composite pre-bid trust verdict + signed token

sigil_verify_ads_txt

ads.txt seller-authorization check

sigil_verify_ip_type

Datacenter / residential / mobile IP classification

sigil_verify_app_bundle

App-store bundle-ID verification

sigil_verify_supply_chain

Full OpenRTB SupplyChain (schain) verification

sigil_score_entity

Pre-computed entity trust score + 14-day trend

sigil_score_batch

Trust scores for up to 200 entities

sigil_atap_register_ait

Register an ATAP AIT for a media-buyer agent

sigil_atap_witness

Witness a bid/budget event into the attestation chain

sigil_generate_receipt

Generate the ATAP compliance Receipt ZIP

Published in the official MCP registry as ai.tunnelmind/sigil.

MCP methods: initialize, tools/list, tools/call, ping.

Related MCP server: attest-mcp-server

Develop

npm install      # wrangler
npm test         # tool-definition checks
npm run dev      # local
npm run deploy   # -> Cloudflare

License

Apache-2.0.

This server cannot be deployed

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Maintenance

ActivityActive
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