Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/MichelKerkmeester/skilled-agent-harness_spec-driven-loopsnpx agentmods add skills/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devinWrote 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/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devin)<a href="https://agentmods.dev/skills/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devin"><img src="https://agentmods.dev/badge/skills/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devin/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/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devin"><img src="https://agentmods.dev/badge/skills/michelkerkmeester/skilled-agent-harness_spec-driven-loops/cli-devin.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 | $0.00028 | $0.09614 |
| Opus 5 | $0.00014 | $0.04807 |
| Sonnet 5 | $0.00006 | $0.01923 |
| Haiku 4.5 | $0.00003 | $0.00961 |
Grade C, and why
cli-devin scanned grade C with 3 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 today.
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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
command -v devin || echo "Not installed. Run: devin setup or curl -fsSL https://devin.ai/install | bash" Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
command -v devin || echo "Not installed. Run: devin setup or curl -fsSL https://devin.ai/install | bash" Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
ancestry = subprocess.check_output(['ps', '-o', 'command=', '-p', str(os.getppid())]).decode() How it starts
The opening of the file, as written. The whole thing — 465 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Devin CLI Orchestrator - Cross-AI Task Delegation
CRITICAL — SELF-INVOCATION PROHIBITED
This skill dispatches to the Cognition CLI binary (
devin). If the agent currently reading this skill is itself running inside Devin (detection signals listed in §2), the skill MUST refuse to load and return the documented error message instead of generating anydevininvocation.A running CLI skill never dispatches itself. The cli-X skills are for cross-AI delegation only — never self-invocation.
Orchestrate Cognition's Devin CLI for tasks that benefit from a second AI perspective, multi-model selection (DeepSeek, GLM-5.2, GPT-5.6 Luna Max, Grok (4.5 and 4.6), SWE-1.7), subagent delegation with run_subagent, cloud handoff via /handoff, or parallel code generation.
Core Principle: Use Devin for what it does best. Delegate, validate, integrate. The calling AI stays the conductor.
1. WHEN TO USE
Activation Triggers
- Cross-AI Validation — code review second perspective, security audit alternative analysis, bug detection, independent implementation attempts.
- Cloud Handoff — long-running tasks, complex refactors, CI-like validation, browser-dependent workflows offloaded to a cloud Devin session via
/handoff. - Subagent Delegation — specialized profile matches (
subagent_explore,subagent_general, custom.devin/agents/[name]/AGENT.mdprofiles), parallel task processing through Devin's native subagent system. - Multi-Model Dispatch — tasks that specifically want a model available through Devin's multi-model surface (DeepSeek, GLM-5.2, GPT-5.6 Luna Max, Grok (4.5 and 4.6), SWE-1.7), selected per-dispatch with
--model. - Parallel Code Generation — offloading generation, simultaneous code generations, background docs/test generation through subagents.
- Specialized Generation — explicit Devin requests, test suite generation, code translation, batch documentation, visual input via clipboard paste or
@file mentions.
What ships with it
60 files 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.
- assets/prompt-quality-card.md 2.8 KB
- assets/prompt-templates.md 20 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/failed-runs.md 144 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/findings-and-recommendations.md 192 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/results.csv 367 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/skill-benchmark-report.json 2.0 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/skill-benchmark-report.md 1.6 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills-2/source.md 955 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/failed-runs.md 144 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/findings-and-recommendations.md 192 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/results.csv 347 B
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/skill-benchmark-report.json 1.9 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/skill-benchmark-report.md 1.6 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--commands-and-skills/source.md 955 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/failed-runs.md 130 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/findings-and-recommendations.md 178 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/results.csv 228 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/skill-benchmark-report.json 1.8 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/skill-benchmark-report.md 1.5 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-10/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/failed-runs.md 130 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/findings-and-recommendations.md 178 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/results.csv 230 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/skill-benchmark-report.json 1.8 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/skill-benchmark-report.md 1.5 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-11/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/failed-runs.md 130 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/findings-and-recommendations.md 178 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/results.csv 258 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/skill-benchmark-report.json 1.8 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/skill-benchmark-report.md 1.5 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-12/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/failed-runs.md 412 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/findings-and-recommendations.md 460 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/results.csv 266 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/skill-benchmark-report.json 1.8 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/skill-benchmark-report.md 1.5 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-13/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/failed-runs.md 130 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/findings-and-recommendations.md 178 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/results.csv 221 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/skill-benchmark-report.json 1.8 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/skill-benchmark-report.md 1.5 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-14/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/failed-runs.md 445 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/findings-and-recommendations.md 483 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/README.md 1.3 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/results.csv 297 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/skill-benchmark-report.json 1.9 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/skill-benchmark-report.md 1.6 KB
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-15/source.md 941 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-16/failed-runs.md 410 B
- benchmark/reports/2026-08-08--manual-testing-playbook--devin-16/findings-and-recommendations.md 448 B
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.
- today Changed · -8 lines 5ec9b61c4955
- 2d ago Changed 51de4c27ff90
- 4d ago Changed e652afa9eca9
- 6d ago First seen · 473 lines · 28 tokens per session scan C 2d70dacca2f8
cli-devin is a skill published in the GitHub repository MichelKerkmeester/skilled-agent-harness_spec-driven-loops (35 stars, last pushed yesterday), licensed MIT. It adds 28 tokens to every session and 9,614 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it C with 3 findings (downloads and executes remote code, makes network calls, runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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