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 skills add markus-global/markus --skill coding-toolsgit clone --depth 1 https://github.com/markus-global/markusWrote 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/skills/markus-global/markus/coding-tools)<a href="https://agentmods.dev/skills/markus-global/markus/coding-tools"><img src="https://agentmods.dev/badge/skills/markus-global/markus/coding-tools/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.
<a href="https://agentmods.dev/skills/markus-global/markus/coding-tools"><img src="https://agentmods.dev/badge/skills/markus-global/markus/coding-tools.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00034 | $0.03023 |
| Opus 5.5 | $0.00014 | $0.01209 |
| Sonnet 5.5 | $0.00007 | $0.00605 |
| Haiku 4.5 | $0.00003 | $0.00302 |
Grade A, and why
coding-tools 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.
How it starts
The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Coding Tools
Markus can delegate hands-on coding work to external CLI tools. You have two built-in tools for this workflow:
| Tool | Purpose |
|---|---|
invoke_coding_tool |
Run Claude Code, Codex, or Cursor Agent against a repository with a prompt |
coding_tool_apply |
Commit the changes produced by a coding tool session |
Use these when the task requires substantial code changes across multiple files, when you want a specialized coding agent to explore a codebase, or when direct editing would be slower or less reliable than delegating to a dedicated tool.
Available Coding Tools
| Tool name | CLI binary | Best for |
|---|---|---|
claude-code |
claude |
Complex refactors, multi-file changes, deep exploration, architecture-level edits |
codex |
codex |
Quick fixes, targeted patches, scripted automation, fast iteration |
cursor-agent |
cursor |
IDE-heavy work, projects with .cursor/rules, repo-specific conventions |
Check availability with markus doctor before relying on a tool. If a tool is not installed, the handler returns an installHint.
When to Use External Tools vs Write Code Directly
Use external coding tools when:
- The change spans many files or requires broad codebase exploration
- You need an autonomous agent to iterate (edit → test → fix) inside the repo
- The task is well-scoped with clear acceptance criteria but large implementation surface
- You are coordinating work and want a specialist tool to execute while you review results
Write code directly (file_edit, shell_execute) when:
- The change is small — a few lines in one or two files
- You already know exactly what to change and where
- You need fine-grained control over every edit
- The task is configuration, documentation, or non-code work
Rule of thumb: If you would open an IDE and spend 15+ minutes navigating and editing, prefer invoke_coding_tool. If you can describe the exact diff in one paragraph, edit directly.
How to Invoke a Coding Tool
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 1mo ago First seen · 301 lines · 34 tokens per session scan A 7b3e92963b98
coding-tools is a skill published in the GitHub repository markus-global/markus (205 stars, last pushed today), licensed Apache-2.0. It adds 34 tokens to every session and 3,023 once invoked, about $0.0001 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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