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 seaworld008/Commonly-used-high-value-skills --skill codebase-onboardinggit clone --depth 1 https://github.com/seaworld008/Commonly-used-high-value-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/seaworld008/commonly-used-high-value-skills/codebase-onboarding)<a href="https://agentmods.dev/skills/seaworld008/commonly-used-high-value-skills/codebase-onboarding"><img src="https://agentmods.dev/badge/skills/seaworld008/commonly-used-high-value-skills/codebase-onboarding/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/seaworld008/commonly-used-high-value-skills/codebase-onboarding"><img src="https://agentmods.dev/badge/skills/seaworld008/commonly-used-high-value-skills/codebase-onboarding.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 6 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 129 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 130 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 313 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 314 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- high Privilege Escalation · line 328 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium Data Exfiltration · line 475 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00027 | $0.03388 |
| Opus 5 | $0.00014 | $0.01694 |
| Sonnet 5 | $0.00005 | $0.00678 |
| Haiku 4.5 | $0.00003 | $0.00339 |
Grade A, and why
codebase-onboarding scanned grade A with 1 finding 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 2d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
curl -X POST \ How it starts
The opening of the file, as written. The whole thing — 485 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Codebase Onboarding
Tier: POWERFUL
Category: Engineering
Domain: Documentation / Developer Experience
Overview
Analyze a codebase and generate comprehensive onboarding documentation tailored to your audience. Produces architecture overviews, key file maps, local setup guides, common task runbooks, debugging guides, and contribution guidelines. Outputs to Markdown, Notion, or Confluence.
Core Capabilities
- Architecture overview — tech stack, system boundaries, data flow diagrams
- Key file map — what's important and why, with annotations
- Local setup guide — step-by-step from clone to running tests
- Common developer tasks — how to add a route, run migrations, create a component
- Debugging guide — common errors, log locations, useful queries
- Contribution guidelines — branch strategy, PR process, code style
- Audience-aware output — junior, senior, or contractor mode
When to Use
- Onboarding a new team member or contractor
- After a major refactor that made existing docs stale
- Before open-sourcing a project
- Creating a team wiki page for a service
- Self-documenting before a long vacation
Codebase Analysis Commands
Read the detailed procedure and examples when working on this part of the task.
Generated Documentation Template
README.md — Full Template
# [Project Name]
> One-sentence description of what this does and who uses it.
[](https://github.com/org/repo/actions/workflows/ci.yml)
[](https://codecov.io/gh/org/repo)
## What is this?
[2-3 sentences: problem it solves, who uses it, current state]
**Live:** https://myapp.com
**Staging:** https://staging.myapp.com
**Docs:** https://docs.myapp.com
---
## Quick Start
### Prerequisites
| Tool | Version | Install |
|------|---------|---------|
| Node.js | 20+ | `nvm install 20` |
| pnpm | 8+ | `npm i -g pnpm` |
| Docker | 24+ | [docker.com](https://docker.com) |
| PostgreSQL | 16+ | via Docker (see below) |
### Setup (5 minutes)
```bash
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.
- 2d ago Changed · -28 lines · -29 tokens per session 9b1a258a7a66
- 10d ago First seen · 513 lines · 56 tokens per session scan A 8af53883413a
codebase-onboarding is a skill published in the GitHub repository seaworld008/Commonly-used-high-value-skills (70 stars, last pushed 2d ago), licensed MIT. It adds 27 tokens to every session and 3,388 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
elasticsearch
Query and analyze logs in Elasticsearch. Use this skill when the user wants to search logs, query log data, count log entries, filter by trace IDs, or analyze application logs stored in Elasticsearch. Common use cases include debugging requests by trace ID, finding error logs, analyzing request patterns, and…
svg-creator
Produce SVGs that are spec-correct (W3C SVG 2), CSS-independent, accessible when meaningful, safe to render in untrusted contexts, optimized in size, and readable enough to edit.
prompt-template-wizard
Rigorously collects and validates all fields needed to produce a complete, unambiguous prompt template for features and bug fixes. The skill asks targeted questions until the template is fully filled, consistent, and ready to paste into a Codex/GPT-5.2 coding session.
read-only-gh-pr-review
Review backend pull requests for correctness, security, performance, maintainability, and test coverage using GitHub CLI plus local repository inspection. Use when asked to review service-layer/API/database changes, audit backend branch diffs, summarize backend risk, or produce actionable must-fix/should-fix feedback.
german-elster-tax-filing
Use this skill to run a complete intake for a german personal income tax return in elster for tax years 2024 onward, estimate the tax result, and map the final values into the correct official forms and fields.
trello
Manage Trello boards, lists, and cards via the Trello REST API.