Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/ogasurfproject-jpg/horizon-shieldWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/plugins/ogasurfproject-jpg/horizon-shield/gemini-extension)<a href="https://agentmods.dev/plugins/ogasurfproject-jpg/horizon-shield/gemini-extension"><img src="https://agentmods.dev/badge/plugins/ogasurfproject-jpg/horizon-shield/gemini-extension/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/plugins/ogasurfproject-jpg/horizon-shield/gemini-extension"><img src="https://agentmods.dev/badge/plugins/ogasurfproject-jpg/horizon-shield/gemini-extension.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
horizon-shield scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
{
"name": "horizon-shield",
"version": "1.0.0",
"description": "Audit Japanese construction and renovation estimates against the open JCCDB dataset and return Bitcoin-anchored, independently recomputable fair-price receipts. Remote MCP server, read-only, no API key.",
"mcpServers": {
"horizon-shield": {
"httpUrl": "https://mcp.horizonshield.dev"
}
},
"contextFileName": "GEMINI.md"
}
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 3d ago First seen · 12 lines scan A 721f812958dd
horizon-shield is a plugin published in the GitHub repository ogasurfproject-jpg/horizon-shield (1 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.
Other plugins, from other repositories
alexandria
Query, read, and ingest texts from 152 public digital libraries: academic papers, public domain books, legal records, government archives, security advisories, news, and developer documentation.
pubmed-mcp-server
Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms.
cdc-health-mcp-server
Search and query CDC public health data — mortality, vaccinations, surveillance, behavioral risk (Socrata SODA API) via MCP. STDIO or Streamable HTTP.
openfda-mcp-server
Query FDA data on drugs, food, devices, and recalls via openFDA. STDIO or Streamable HTTP.
arxiv-mcp-server
Search arXiv, fetch paper metadata, and read full-text content via MCP. STDIO or Streamable HTTP.
devcdp
Real Chrome DevTools access for Claude: console, network, DOM, source maps, breakpoints and live variables, plus guidance on when to use each.