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 mOdrA40/claude-codex-skills-directory --skill tekton-mastery-skillgit clone --depth 1 https://github.com/mOdrA40/claude-codex-skills-directoryWrote 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/modra40/claude-codex-skills-directory/tekton-mastery-skill)<a href="https://agentmods.dev/skills/modra40/claude-codex-skills-directory/tekton-mastery-skill"><img src="https://agentmods.dev/badge/skills/modra40/claude-codex-skills-directory/tekton-mastery-skill/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/modra40/claude-codex-skills-directory/tekton-mastery-skill"><img src="https://agentmods.dev/badge/skills/modra40/claude-codex-skills-directory/tekton-mastery-skill.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 | $0.00066 | $0.00457 |
| Opus 5.5 | $0.00026 | $0.00183 |
| Sonnet 5.5 | $0.00013 | $0.00091 |
| Haiku 4.5 | $0.00007 | $0.00046 |
Grade A, and why
tekton-principal-engineer 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 2mo 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.
The source is not reproduced here
No licence file
A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.
What ships with it
8 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.
- references/incident-runbooks.md 816 B
- references/multi-tenant-governance-and-platform-standards.md 916 B
- references/observability-and-debugging.md 1.0 KB
- references/pipeline-architecture-and-task-boundaries.md 866 B
- references/reliability-and-operations.md 1.0 KB
- references/runner-isolation-build-security-and-secret-handling.md 870 B
- references/supply-chain-integrity-and-provenance.md 914 B
- references/workspaces-params-results-and-contract-design.md 854 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.
- 2mo ago First seen · 35 lines · 66 tokens per session scan A a833c8e07792
tekton-principal-engineer is a skill published in the GitHub repository mOdrA40/claude-codex-skills-directory (5 stars, last pushed 7mo ago), with no licence file. It adds 66 tokens to every session and 457 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 2026-08-31.
tekton-principal-engineer compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| tekton-principal-engineermOdrA40/claude-codex-skills-directory | Skill | 5 | 7mo ago | none | A | 66 | Claude Code, Codex |
| performing-container-security-scanning-with-trivyxalgorix/xalgorix | Skill | 1.3k | 2d ago | Apache-2.0 | A | 48 | Claude Code, Codex |
| devops-deploymentyonatangross/orchestkit | Skill | 299 | yesterday | MIT | A | 34 | Claude Code |
| devops-automatorcuriositech/some_claude_skills | Skill | 263 | yesterday | MIT | A | 87 | Claude Code |
| CI/CD Pipeline AdvancedPramodDutta/qaskills | Skill | 245 | 4d ago | MIT | A | 45 | Claude Code, Codex |
| checkovTerminalSkills/skills | Skill | 192 | yesterday | Apache-2.0 | A | 84 | Claude Code, Codex |
| test-environmentspetrkindlmann/qa-skills | Skill | 250 | 16d ago | MIT | A | 157 | Claude Code, Codex |