What is rvtdocs-mcp AGENTS.md?

A set of instructions for rvtdocs-mcp, a local server for exploring Revit API documentation. Revit is software used for building design, and an API is the interface programmers use to control or extend it.

Finding Revit API entries, browsing namespaces and class members, comparing two Revit versions, and fetching documentation pages.

It lets an agent search cached Revit documentation, browse API members, compare versions, and fetch detailed pages without repeatedly downloading the full index.

How trgiangv/rvtdocs-mcp configures Codex and OpenCode

Reuse

Borrowing it

Nothing to install: this file belongs to trgiangv/rvtdocs-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/trgiangv/rvtdocs-mcp/main/AGENTS.md

Clone the repo

git clone --depth 1 https://github.com/trgiangv/rvtdocs-mcp

Made for: Codex, 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/trgiangv/rvtdocs-mcp/agents-md/github.svg)](https://agentmods.dev/instructions/trgiangv/rvtdocs-mcp/agents-md)

Your own site

<a href="https://agentmods.dev/instructions/trgiangv/rvtdocs-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/trgiangv/rvtdocs-mcp/agents-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/trgiangv/rvtdocs-mcp/agents-md"><img src="https://agentmods.dev/badge/instructions/trgiangv/rvtdocs-mcp/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 975 This file is loaded in full into every session.

When invoked 975 The same file — it is already loaded in full.

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.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00975	$0.00975
Opus 5.5	$0.00390	$0.00390
Sonnet 5.5	$0.00195	$0.00195
Haiku 4.5	$0.00097	$0.00097

Measured 2mo ago against content hash 13c2ef4e649f, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

rvtdocs-mcp AGENTS.md 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 2mo 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.

AGENTS.md · 96 lines

How it starts

The opening of the file, as written. The whole thing — 96 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS

Overview

rvtdocs-mcp is a local-first MCP server for Revit API documentation exploration. Downloads the full API tree index from rvtdocs.com once per version, caches in AppData, then provides instant keyword search, namespace browsing, version comparison, and page fetching — all offline after initial download.

Architecture

rvtdocs.com/static/json_trees/sidebar_{year}.json (7MB per year)
    ↓ (download once)
%APPDATA%/rvtdocs-mcp/revit_{year}.json (cached permanently)
    ↓ (load ~350ms)
In-memory index (28K entries per year)
    ↓
Tools: search (7ms) | scan (1ms) | diff (1ms) | fetch (network)

Tools (4 total)

Tool	Purpose	Mode	Latency
`rvtdocs_search`	Keyword search across 28K API entries	Local index	~7ms
`rvtdocs_scan`	Browse namespace or class members	Local index	~1ms
`rvtdocs_diff`	Compare API between two Revit versions	Local index	~1ms
`rvtdocs_fetch`	Fetch detailed page content by URL	Network + cache	50-500ms

Project Structure

src/
  server.py           # MCPServer entry point (wiring only)
  config.py           # Constants (BASE_URL, years, limits)
  cache_store.py      # In-memory LRU page cache
  fetcher.py          # HTTP client with cache
  extractor.py        # HTML -> text (trafilatura)
  search/
    __init__.py
    tree_index.py     # Core: download, index, search, scan, scoring
  tools/
    __init__.py       # Tool registration
    search.py         # rvtdocs_search (sync, local)
    scan.py           # rvtdocs_scan (sync, local)
    diff.py           # rvtdocs_diff (sync, local)
    fetch.py          # rvtdocs_fetch (async, network)

Commands

uvx --from . rvtdocs-mcp       # Run server (MCP stdio)
uv run python -c "..."          # Quick test

Data

Source: https://rvtdocs.com/static/json_trees/sidebar_{year}.json
Local cache: %APPDATA%/rvtdocs-mcp/revit_{year}.json (Win) or ~/.cache/rvtdocs-mcp/ (Unix)
Supported years: 2022, 2023, 2024, 2025, 2026, 2027
Entries per year: ~28,000 (namespaces, classes, methods, properties, enums, etc.)
Download: lazy (first query per year triggers download)

Read the full file on GitHub · 96 lines

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.

2mo ago First seen · 96 lines · 975 tokens per session scan A 13c2ef4e649f

Subscribe to this mod's changes

rvtdocs-mcp AGENTS.md is an instructions file published in the GitHub repository trgiangv/rvtdocs-mcp (2 stars, last pushed 3mo ago), licensed MIT. It adds 975 tokens to every session, about $0.0039 per session on Opus 5.5. 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 2026-08-31.

Writing and docs

rvtdocs-mcp AGENTS.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
rvtdocs-mcp AGENTS.mdtrgiangv/rvtdocs-mcp	Instructions file	2	3mo ago	MIT	A	975	Codex, OpenCode
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

rvtdocs-mcp: Instructions file for Codex