mcp-coroot: Instructions file for Claude Code

CLAUDE.md

mcp-coroot CLAUDE.md is an instructions file for Claude Code from jamesbrink/mcp-coroot. It costs 1,901 tokens per session, scanned A, original, MIT.

Instructions for setting up MCP Coroot with Claude Desktop. MCP is a way for an AI assistant to connect to outside tools or services.

In plain words
What is it for?
Use it to configure the Coroot server in Claude Desktop, including setup with the published package, single sign-on or multi-factor login, and local development.
Why use it?
It gathers setup rules, testing conventions, and configuration guidance in one place so the server can be installed and maintained consistently.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is jamesbrink/mcp-coroot's own configuration. It tells Claude Code how to work on mcp-coroot itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-coroot configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jamesbrink/mcp-coroot. 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/jamesbrink/mcp-coroot/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/jamesbrink/mcp-coroot

Made for: Claude Code.

Wrote this? Show the measurements

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README.md
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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.

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<a href="https://agentmods.dev/instructions/jamesbrink/mcp-coroot/claude-md"><img src="https://agentmods.dev/badge/instructions/jamesbrink/mcp-coroot/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,901 This file is loaded in full into every session.
When invoked 1,901 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01901 $0.01901
Opus 5.5 $0.00760 $0.00760
Sonnet 5.5 $0.00380 $0.00380
Haiku 4.5 $0.00190 $0.00190

Measured 1mo ago against content hash 80218b1504ec, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-coroot CLAUDE.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 1mo 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.

CLAUDE.md · 155 lines

How it starts

The opening of the file, as written. The whole thing — 155 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

Internal notes for working on this repository.

Documentation policy

This project keeps exactly two prose documents: README.md (public) and CLAUDE.md (this file). LICENSE and CHANGELOG.md are also allowed. Do not add other markdown files; fold new documentation into one of these.

Testing standards

  • Test files are named test_<module>.py and mirror the module they cover.
  • Never use suffixes like test_final_*.py, test_new_*.py or test_all_remaining_*.py. Consolidate into the existing file instead.
  • Tests run against a scripted fake Coroot (tests/conftest.py), never a live instance and never the network.

Layout

src/mcp_coroot/
  config.py            Settings, read from the environment once at startup
  cli.py               Argument parsing, logging to stderr, transport selection
  client/
    base.py            Pooled httpx2 transport, lazy login, body decoding
    errors.py          Exception types mapped from Coroot's status codes
    ids.py             ApplicationId parsing and path-segment encoding
    timerange.py       Relative, epoch and ISO time parsing
    accounts.py projects.py overview.py applications.py incidents.py
    dashboards.py configuration.py metrics.py
    client.py          CorootClient, composing the above
  server/
    app.py             build_server, lifespan, annotation constants
    state.py           AppState, project resolution, StateHolder
    errors.py          guard decorator turning client errors into ToolError
    compact.py         Chart, flame graph and budget reduction
    instructions.py    The instructions string sent to clients
    resources.py       prompts.py
    tools/             One module per domain, registered by register_all

Architecture decisions

SDK. The official mcp 2.x SDK (mcp.server.mcpserver.MCPServer), not jlowin fastmcp. It ships the same day as the spec revisions it implements, masks unexpected exceptions instead of leaking them to the model, and pre-parses JSON strings for list and object parameters, which removes the string-coercion workarounds 0.1.x carried. Note that mcp.server.fastmcp no longer exists in mcp 2.x, and that fastmcp>=4 depends on mcp>=2 itself.

Read the full file on GitHub · 155 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.

  1. 1mo ago Changed · -95 lines · +132 tokens per session 80218b1504ec
  2. 2mo ago First seen · 250 lines · 1,769 tokens per session scan A 536ffb2c8fc4

Subscribe to this mod's changes

mcp-coroot CLAUDE.md is an instructions file published in the GitHub repository jamesbrink/mcp-coroot (16 stars, last pushed 1mo ago), licensed MIT. It adds 1,901 tokens to every session, about $0.0076 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 2026-08-30.

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