MCPs βΊ Data & APIs βΊ horizon-shield
Third-party auditor for Japanese construction & renovation estimates. Checks a quoted price against curated fair-price data, flags overcharge and sales tactics, and returns a Bitcoin-anchored, independently verifiable signed receipt (PTKA) - proof you can recompute, not just an opinion. Remote MCP, no auth. Works with Claude, ChatGPT, Gemini, Perplexity.
Not monetized yet
Turn horizon-shieldβs tool calls into revenue: one disclosed sponsored slot, 70% revenue share, fail-open by design.
Install horizon-shield
For anyone using horizon-shield β no Lulu account neededclaude mcp add --transport http horizon-shield https://horizon-shield--oga-surf-project.run.tools
9 field-tested tactics as a designed playbook plus skills your coding agent can run. Free.
Get the Kit βFAQ
Run: claude mcp add --transport http horizon-shield https://horizon-shield--oga-surf-project.run.tools
Yes β itβs a remote MCP server, so no local install is needed.
ChatGPT: Settings β Connectors β Advanced β Developer mode β Add connector, then paste https://horizon-shield--oga-surf-project.run.tools.
Claude.ai: Settings β Connectors β Add custom connector, then paste the same URL.
Unrated out of 100, computed from cross-registry traction signals (installs, stars, registry presence) β never influenced by sponsorship.
Similar servers
Works well together
Your server?
This is for the person who owns horizon-shield β adds Lulu Ads to your own code. Not the install steps above, those are for your users.
Copies a ready prompt: your coding agent installs the lulu-ads SDK, wires the slot, and applies the widget design guide.
or set up manually at getlulu.dev/publishers
Get verified so you can edit the page. Your badge is already live below β no claim needed for that.
Managed hosting with monetization built in β waitlist.
[](https://getlulu.dev/mcps/horizon-shield)