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.
npx agentmods add instructions/iheanyi/agentctl/claude-mdgit clone --depth 1 https://github.com/iheanyi/agentctlWrote 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.
[](https://agentmods.dev/instructions/iheanyi/agentctl/claude-md)<a href="https://agentmods.dev/instructions/iheanyi/agentctl/claude-md"><img src="https://agentmods.dev/badge/instructions/iheanyi/agentctl/claude-md.svg" alt="Measured on agentmods" height="20"></a>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 | $0.01996 | $0.01996 |
| Opus 5 | $0.00998 | $0.00998 |
| Sonnet 5 | $0.00399 | $0.00399 |
| Haiku 4.5 | $0.00200 | $0.00200 |
Grade B, and why
agentctl CLAUDE.md scanned grade B with 1 finding 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
| Claude Code | `~/.claude/settings.json` | `mcpServers` | How it starts
The opening of the file, as written. The whole thing — 252 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md - agentctl Development Guide
Project Overview
agentctl is a universal agent configuration manager for syncing MCP servers, commands, rules, prompts, and skills across 10 agentic tools: Claude Code, Claude Desktop, Cursor, Codex, OpenCode, Cline, Windsurf, Zed, Continue, and Gemini.
Module: github.com/iheanyi/agentctl
Quick Commands
# Build
go build ./...
# Run all tests
go test ./...
# Run golden tests only
go test ./pkg/sync/... -run Golden -v
# Update golden files
UPDATE_GOLDENS=1 go test ./pkg/sync/... -run Golden
# Interactive golden updates
GOLDEN_INTERACTIVE=1 go test ./pkg/sync/... -run Golden
# Build binary
go build -o agentctl ./cmd/agentctl
# Run CLI
./agentctl --help
./agentctl add filesystem
./agentctl sync --dry-run
./agentctl validate
./agentctl doctor -v
Architecture
Package Structure
cmd/agentctl/ # Entry point
internal/
├── cli/ # Cobra commands (add, sync, validate, doctor, etc.)
├── tui/ # Bubble Tea TUI
pkg/
├── mcp/ # MCP server types (Server, Source, Transport)
├── config/ # Config loading/saving, profiles, project-local
├── sync/ # Tool adapters + golden test infrastructure
│ ├── adapter.go # Adapter interface and registry
│ ├── claude.go # Claude Code adapter
│ ├── cursor.go # Cursor adapter (filters HTTP/SSE)
│ ├── opencode.go # OpenCode adapter (uses state file)
│ ├── state.go # External state file for tracking
│ ├── golden_test.go # Comprehensive golden tests
│ └── testdata/ # Fixtures and golden files
├── aliases/ # Bundled + user aliases
├── builder/ # Git cloning, auto-build detection
├── profile/ # Profile CRUD
├── registry/ # mcp.so API client
├── output/ # Terminal output formatting
├── command/ # Slash command schema
├── rule/ # Rules with YAML frontmatter
├── prompt/ # Prompt templates
├── skill/ # Directory-based skills
├── secrets/ # Keychain integration
├── lockfile/ # Version locking
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.
- 3d ago First seen · 252 lines · 1,996 tokens per session scan B a2fe986280c3
agentctl CLAUDE.md is an instructions file published in the GitHub repository iheanyi/agentctl (20 stars, last pushed 6mo ago), licensed MIT. It adds 1,996 tokens to every session, about $0.0100 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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