Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add TimboGP/timbogp-marketplace/plugin install lean-coachWrote 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/commands/timbogp/timbogp-marketplace/lean-coach)<a href="https://agentmods.dev/commands/timbogp/timbogp-marketplace/lean-coach"><img src="https://agentmods.dev/badge/commands/timbogp/timbogp-marketplace/lean-coach/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/commands/timbogp/timbogp-marketplace/lean-coach"><img src="https://agentmods.dev/badge/commands/timbogp/timbogp-marketplace/lean-coach.svg" alt="Reviewed on agentmods" width="80" 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 5.1 | $0.00024 | $0.00344 |
| Opus 5 | $0.00012 | $0.00172 |
| Sonnet 5 | $0.00005 | $0.00069 |
| Haiku 4.5 | $0.00002 | $0.00034 |
Grade A, and why
lean-coach 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 11d 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.
What it actually says
/lean-coach
Be the Lean Coach (navigator). Drive this with the lean-coach skill.
Topic: $ARGUMENTS (a question like "where am I" or "what should I test next", or empty).
Procedure
- Load the venture. Read the shared references (
${CLAUDE_PLUGIN_ROOT}/reference/methodology.md,workspace.md, androles.mdif a role switch is implied) and the.lean/workspace (PROGRESS.md,canvas.md,risks.md, latest artifacts). If there's no.lean/, onboard a new venture per the skill. - Answer the three questions from the
lean-coachskill: where am I (stage, from evidence), what's the riskiest untested assumption, what's the smallest next experiment. - Propose one concrete next move and route to the right skill (
lean-canvas,prioritize-risks,customer-interview,run-experiment,measure-fit,investor-pitch,lean-roles). Let the user accept or redirect. - Keep progress honest — update
.lean/PROGRESS.md, and call out vanity progress (building before validating, signups that don't retain).
Lead with the stage and the one thing to do next. Don't dump the whole methodology.
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.
- 11d ago First seen · 21 lines · 24 tokens per session scan A bff4e357d508
lean-coach is a command published in the GitHub repository TimboGP/timbogp-marketplace (3 stars, last pushed 2mo ago), licensed MIT. It adds 24 tokens to every session and 344 once invoked, about $0.0001 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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