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 GrishaAngelovGH/gemini-cli-agent-skills --skill project-feature-explainergit clone --depth 1 https://github.com/GrishaAngelovGH/gemini-cli-agent-skillsWrote 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/grishaangelovgh/gemini-cli-agent-skills/project-feature-explainer)<a href="https://agentmods.dev/skills/grishaangelovgh/gemini-cli-agent-skills/project-feature-explainer"><img src="https://agentmods.dev/badge/skills/grishaangelovgh/gemini-cli-agent-skills/project-feature-explainer/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/grishaangelovgh/gemini-cli-agent-skills/project-feature-explainer"><img src="https://agentmods.dev/badge/skills/grishaangelovgh/gemini-cli-agent-skills/project-feature-explainer.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 | $0.00080 | $0.00416 |
| Opus 5.5 | $0.00032 | $0.00166 |
| Sonnet 5.5 | $0.00016 | $0.00083 |
| Haiku 4.5 | $0.00008 | $0.00042 |
Grade A, and why
project-feature-explainer 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.
What it actually says
Project Feature Explainer Skill
This skill provides a systematic approach to analyzing and explaining a specific feature within a codebase.
Workflow
- Identify Entry Points: Locate the main functions, classes, or API endpoints that trigger the feature.
- Trace Dependencies: Identify the internal modules, services, or external APIs the feature relies on.
- Analyze Data Flow: Understand how data enters the feature, how it's transformed, and where it's stored or returned.
- Draft Explanation: Structure the explanation using the mandatory sections below.
- Verify: Cross-reference the draft with the
references/checklist.mdto ensure completeness.
Mandatory Output Structure
1. Feature Summary
A high-level overview (1-2 paragraphs) explaining what the feature does and why it exists.
2. Deep Dive (Technical Details)
A detailed breakdown of the internal implementation.
- Key Components: List the main files/classes/functions involved.
- Logic Flow: Step-by-step description of the execution path.
- State Changes: Describe any side effects (e.g., database updates, cache invalidation).
3. Usage & Examples
Code snippets or CLI commands showing how to use the feature.
- Include common parameters and expected outputs.
- Provide a "Happy Path" example.
Guidelines
- Be Concise: Focus on the "how" and "why" without repeating obvious code logic.
- Reference Code: Use specific file paths and symbol names.
- Contextualize: Explain how this feature fits into the broader system architecture.
What ships with it
3 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.
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 · 38 lines · 80 tokens per session scan A 24916e4a7575
project-feature-explainer is a skill published in the GitHub repository GrishaAngelovGH/gemini-cli-agent-skills (16 stars, last pushed 7mo ago), licensed MIT. It adds 80 tokens to every session and 416 once invoked, about $0.0003 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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