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nrhp

nrhp is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from pnnl/nepa-mcp. Its token cost is not measured, scanned A, original, BSD-3-Clause.

An MCP server configuration for NRHP, a tool related to the U.S. National Register of Historic Places. The entry only provides the command and environment setting needed to launch that server.

In plain words
What is it for?
Use it as a configuration entry for connecting an agent to the NRHP server; its concrete data-retrieval jobs are not specified here.
Why use it?
It gives an agent a defined way to start the NRHP service when the required software is installed. The supplied information does not describe the searches or operations the service supports.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it. Also seen: listed in a Claude config.

One of 23 entries in .mcp.json upstream. Installing this one merges just its entry into your config; the other 22 are separate, each on its own page.

not rated 13repo +1 yesterday A scan tokens not measured original BSD-3-Clause

Good fit Use it as a configuration entry for connecting an agent to the NRHP server; its concrete data-retrieval jobs are not specified here.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/pnnl/nepa-mcp/nrhp
View source ↗ pnnl/nepa-mcp pnnl.github.io
Install

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.

Clone the repo
git clone --depth 1 https://github.com/pnnl/nepa-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote 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.

agentmods badge for nrhp

README.md
[![agentmods](https://agentmods.dev/badge/mcp/pnnl/nepa-mcp/nrhp/github.svg)](https://agentmods.dev/mcp/pnnl/nepa-mcp/nrhp)
Your own site
<a href="https://agentmods.dev/mcp/pnnl/nepa-mcp/nrhp"><img src="https://agentmods.dev/badge/mcp/pnnl/nepa-mcp/nrhp/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.

agentmods 80×15 button for nrhp

Your own site · 80×15
<a href="https://agentmods.dev/mcp/pnnl/nepa-mcp/nrhp"><img src="https://agentmods.dev/badge/mcp/pnnl/nepa-mcp/nrhp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

nrhp 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 8d 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.

.mcp.json · 12 lines

What it actually says

{
  "nrhp": {
    "command": "nepa-mcp",
    "args": [
      "server",
      "nrhp"
    ],
    "env": {
      "PYTHONUNBUFFERED": "1"
    }
  }
}
Same file

What else .mcp.json configures

This page is one entry in a file that holds 23. Installing the file brings all of them; each is measured and scanned on its own page.

Changes

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.

  1. 8d ago First seen · 12 lines scan A 1189ffd860e4

Subscribe to this mod's changes

nrhp is an MCP server published in the GitHub repository pnnl/nepa-mcp (13 stars, last pushed yesterday), licensed BSD-3-Clause. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. 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 2026-08-30.

Researchenergy-infrastructureenvironmental-dataenvironmental-reviewfederal-permittinggeospatial-screeningregulatory-research
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