toolhive: Instructions file for Claude Code

CLAUDE.md

toolhive CLAUDE.md is an instructions file for Claude Code from stacklok/toolhive. It costs 1,562 tokens per session, scanned A, original, Apache-2.0.

Repository instructions for ToolHive, a Go application that manages MCP servers. MCP is a standard way for AI agents to connect to external tools and data; ToolHive runs those servers in containers and can also manage them through Kubernetes.

In plain words
What is it for?
Use them when building, testing, linting, or extending ToolHive’s command-line tool, Kubernetes operator, proxy runner, or MCP server management.
Why use it?
They explain the system’s components and development commands so an agent can choose the right code and checks when changing the project.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

This is stacklok/toolhive's own configuration. It tells Claude Code how to work on toolhive 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 toolhive configures →

About the project

ToolHive is a platform for running and managing Model Context Protocol servers, which give AI clients access to tools and data. Developers, platform teams, and enterprises use it to isolate MCP servers, control access, and monitor their operation. The catalogue entries provide agent workflows and configuration for operating ToolHive and its MCP servers.

stacklok/toolhive · 2,307 stars · on GitHub · stacklok.com

Reuse

Borrowing it

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

Made for: Claude Code.

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 toolhive CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/stacklok/toolhive/claude-md/github.svg)](https://agentmods.dev/instructions/stacklok/toolhive/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/stacklok/toolhive/claude-md"><img src="https://agentmods.dev/badge/instructions/stacklok/toolhive/claude-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.

agentmods 80×15 button for toolhive CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/stacklok/toolhive/claude-md"><img src="https://agentmods.dev/badge/instructions/stacklok/toolhive/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,562 This file is loaded in full into every session.
When invoked 1,562 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 $0.01562 $0.01562
Opus 5.5 $0.00625 $0.00625
Sonnet 5.5 $0.00312 $0.00312
Haiku 4.5 $0.00156 $0.00156

Measured 9d ago against content hash 057f4ba10040, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

toolhive 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 9d 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 · 109 lines

How it starts

The opening of the file, as written. The whole thing — 109 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 when working with this repository.

Project Overview

ToolHive is a lightweight, secure manager for MCP (Model Context Protocol: https://modelcontextprotocol.io) servers written in Go. It provides a CLI (thv), a Kubernetes operator (thv-operator), and a proxy runner (thv-proxyrunner) for container-based MCP server isolation.

To understand the system, start with the Architecture Documentation. Begin at the Architecture Overview and Core Concepts, then read the component deep-dives relevant to your task — Deployment Modes, Transport Architecture, Kubernetes Operator, Virtual MCP, and more. The architecture index has a full map and by-topic navigation.

Build and Development Commands

task build            # Build the main binary
task install          # Install binary to GOPATH/bin
task lint             # Run linting
task lint-fix         # Fix linting issues (preferred over lint)
task test             # Unit tests (excluding e2e)
task test-e2e         # E2E tests (requires build first)
task test-all         # All tests (unit + e2e)
task test-coverage    # Tests with coverage analysis
task gen              # Generate mocks
task docs             # Generate CLI documentation
task build-image      # Build container image
task build-all-images # Build all container images

IMPORTANT: Always use task commands. Never run go test, go build, or golangci-lint directly -- the Taskfile has correct flags, exclusions, and environment setup that direct commands miss.

Testing: Ginkgo/Gomega for BDD-style tests. Unit tests for pkg/ business logic; E2E tests for CLI commands.

Available Subagents

Agents are in .claude/agents/ and MUST be invoked for tasks matching their expertise:

Read the full file on GitHub · 109 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. 9d ago Changed · +2 lines · +132 tokens per session 057f4ba10040
  2. 1mo ago First seen · 107 lines · 1,430 tokens per session scan A da194a7d4327

Subscribe to this mod's changes

toolhive CLAUDE.md is an instructions file published in the GitHub repository stacklok/toolhive (2,307 stars, last pushed today), licensed Apache-2.0. It adds 1,562 tokens to every session, about $0.0062 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.

Related

Other instructions, from other repositories

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 9,715 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,581 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).

microsoft/vscode · 5,262 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,680 tokens

vscode copilot-instructions.md

Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).

microsoft/vscode · 2,731 tokens

deepseek-harness AGENTS.md

AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.

deepseek-ai/deepseek-harness · 4,261 tokens