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sophos-central-mcp: Instructions file for Claude Code

CLAUDE.md

sophos-central-mcp CLAUDE.md is an instructions file for Claude Code from Aaronjacobs000/sophos-central-mcp. It costs 1,304 tokens per session, scanned A, original, MIT.

Repository instructions for a Sophos Central MCP server, which lets a coding agent work with Sophos Central through its REST API. They cover the TypeScript architecture, startup process, and build commands.

In plain words
What is it for?
Building, starting, and developing the Sophos Central MCP server, configuring its environment, and fixing TypeScript errors before treating changes as complete.
Why use it?
They give maintainers a defined way to configure credentials, build the server, and understand how authentication and tenant discovery work. They also state that a successful TypeScript build is the main verification step.

Instructions file for Claude Code

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

This is Aaronjacobs000/sophos-central-mcp's own configuration. It tells Claude Code how to work on sophos-central-mcp 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 sophos-central-mcp configures →

not rated 7repo +1 changed 3d ago A scan 1,304 tokens original MIT
View source ↗ Aaronjacobs000/sophos-central-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to Aaronjacobs000/sophos-central-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/Aaronjacobs000/sophos-central-mcp/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/Aaronjacobs000/sophos-central-mcp

Made for: Claude Code.

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Per session 1,304 This file is loaded in full into every session.
When invoked 1,304 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 $0.01304 $0.01304
Opus 5 $0.00652 $0.00652
Sonnet 5 $0.00261 $0.00261
Haiku 4.5 $0.00130 $0.00130

Measured 3d ago against content hash 5b0abc9871f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

sophos-central-mcp 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 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.

CLAUDE.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Commands

npm run build       # Compile TypeScript to dist/
npm start           # Run the compiled server
npm run dev         # Watch mode (tsc --watch)
npm run build:mcpb  # Build the Claude Desktop extension bundle into release/

There are no tests. TypeScript compilation (npm run build) is the main verification step — fix all type errors before considering a change complete.

Run the server locally:

cp .env.example .env   # Then fill in credentials
npm run build && npm start

MCPB packaging

manifest.json at the repo root is the MCP Bundle manifest. scripts/build-mcpb.mjs (run via npm run build:mcpb) rewrites its version from package.json and its tools array from every registerTool call in src/tools/, validates it, stages dist/ plus production dependencies in build/mcpb/, and packs release/sophos-central-mcp-server-<version>.mcpb. Do not hand-edit version or tools in the manifest; edit the other fields (description, user_config, compatibility) directly and re-run the build. New tools must follow the registerTool("name", { title: "...", description: ... ... shape or the build fails on purpose.

Credentials come from user_config (sophos_client_id, sophos_client_secret, both sensitive) mapped to SOPHOS_CLIENT_ID / SOPHOS_CLIENT_SECRET in server.mcp_config.env, with TRANSPORT=stdio fixed.

Architecture

This is a Model Context Protocol (MCP) server that wraps the Sophos Central REST API, built with @modelcontextprotocol/sdk, Express (HTTP transport), and Zod (schema validation). TypeScript ESM ("type": "module", Node16 module resolution) — all imports must use .js extensions.

Startup flow (src/index.ts)

  1. Load config from env vars (src/config/config.ts)
  2. TokenManager fetches an OAuth2 token from https://id.sophos.com/api/v2/oauth2/token
  3. TenantResolver.init() calls /whoami/v1 to discover caller identity type: partner | organization | tenant
  4. For partner/org callers, loadTenants() paginates through all managed tenants and caches tenantId → apiHost
  5. Tools are registered conditionally: sophos_list_tenants only for partner/org; all others always
  6. Transport starts: streamable HTTP on 127.0.0.1:PORT/mcp (stateless, new transport per request) or stdio

Read the full file on GitHub · 90 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. 3d ago Changed · +7 lines · +266 tokens per session 5b0abc9871f7
  2. 10d ago First seen · 83 lines · 1,038 tokens per session scan A 50f001ff2761

Subscribe to this mod's changes

sophos-central-mcp CLAUDE.md is an instructions file published in the GitHub repository Aaronjacobs000/sophos-central-mcp (7 stars, last pushed 4d ago), licensed MIT. It adds 1,304 tokens to every session, about $0.0065 per session on Opus 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.

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