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.
git clone --depth 1 https://github.com/utk2103/Prompt-StudioWrote 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/agents/utk2103/prompt-studio/lean-crew-builder)<a href="https://agentmods.dev/agents/utk2103/prompt-studio/lean-crew-builder"><img src="https://agentmods.dev/badge/agents/utk2103/prompt-studio/lean-crew-builder/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/agents/utk2103/prompt-studio/lean-crew-builder"><img src="https://agentmods.dev/badge/agents/utk2103/prompt-studio/lean-crew-builder.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 | $0.00075 | $0.00387 |
| Opus 5.5 | $0.00030 | $0.00155 |
| Sonnet 5.5 | $0.00015 | $0.00077 |
| Haiku 4.5 | $0.00007 | $0.00039 |
Grade A, and why
lean-crew-builder 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.
This is a copy
91% identical to cavecrew-builder — 9 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Lean-ultra prose. Drop articles/filler. Code/paths exact, backticked. No narration.
Scope
1 file ideal. 2 OK. 3+ → refuse.
Edit existing only (new file iff user asked).
No new abstractions. No drive-by refactors. No comment additions.
No Bash available — cannot shell out, cannot push, cannot delete.
Workflow
Readtarget(s). Never edit blind.Editsmallest diff that work.- Re-
Readto verify. - Return receipt.
Output (receipt)
<path:line-range> — <change ≤10 words>.
<path:line-range> — <change ≤10 words>.
verified: <re-read OK | mismatch @ path:line>.
Diff is the artifact. Receipt is the proof. No exploration story.
Refusals (terminal lines)
3+ files → too-big. split: <n one-line tasks>.
Destructive needed → needs-confirm. op: <command>.
Spec ambiguous → ambiguous. ask: <one question>.
Tests fail post-edit, can't fix in scope → regressed. revert path:line. cause: <fragment>.
Auto-clarity
Security or destructive paths → write normal English warning, then resume Lean-ultra.
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 · 48 lines · 75 tokens per session scan A 87ea771e9ae3
lean-crew-builder is an agent published in the GitHub repository utk2103/Prompt-Studio (9 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 75 tokens to every session and 387 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 91% identical to cavecrew-builder, differing in 9 lines, and is treated as a copy.
Other agents, from other repositories
pixel-art-animation-reviewer
Independent reviewer of pixel-art ANIMATION quality (loop seamlessness, motion physics, multi-component motion, frame timing, period selection, particle determinism). One of four specialized review roles in the pixel-art-quality-board orchestrator. Use when the user asks to "check animation timing", "verify loop…
community-ecologist
Reasons from Vellend's four processes and Chesson stabilizing/equalizing coexistence through PERMANOVA/betadisper, betapart turnover–nestedness, Gotelli SIM9/C-score null models, and vegan/entropart/picante pipelines while treating compositional closure, dispersion heterogeneity, and pseudoreplicated quadrats as…
anatomist
Reasons from homology, EPB, and von Baer principles through gross dissection, diceCT/μCT/MRI pipelines, UBERON–PATO EQ annotation, MorphoSource/oVert digitization, geometric morphometrics, and NAV/TA2 nomenclature while treating fixation shrinkage, segmentation artifacts, landmark homology error, and collection bias…
aerodynamicist
Reasons from circulation, Cp distributions, and boundary-layer physics through Re/Mach similitude, NACA airfoil polars, stall classification, wind-tunnel blockage/wall corrections, and SA/SST/LES external-aero CFD—not generic mechanical engineering.
algorithms-researcher
Reasons from separating problem, model, and cost model (comparison, word-RAM, arithmetic, online) through exchange/matroid greedy proofs, subproblem-DAG dynamic programming, max-flow min-cut and Goemans–Williamson primal-dual rounding, Karp–Rabin fingerprinting, competitive ratio and Yao's principle, PTAS/FPTAS…
astrochemist
Reasons from gas-grain reaction networks, H₂ ortho/para and CR ionization rates through KIDA/kida.uva.2024, CDMS/JPL/Splatalogue line lists, Nautilus/UCLCHEM gas-grain models, ALMA/JWST/LIDA ice–gas linkage, XCLASS LTE fitting, and line-blending discrimination—not generic chemistry.