Borrowing it
Nothing to install: this file belongs to YankielDBC2/codex-skills-library. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/YankielDBC2/codex-skills-library/main/.agents/skills/token-efficient-codex-run/SKILL.mdgit clone --depth 1 https://github.com/YankielDBC2/codex-skills-libraryWrote 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/yankieldbc2/codex-skills-library/token-efficient-codex-run)<a href="https://agentmods.dev/skills/yankieldbc2/codex-skills-library/token-efficient-codex-run"><img src="https://agentmods.dev/badge/skills/yankieldbc2/codex-skills-library/token-efficient-codex-run/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/yankieldbc2/codex-skills-library/token-efficient-codex-run"><img src="https://agentmods.dev/badge/skills/yankieldbc2/codex-skills-library/token-efficient-codex-run.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 | $0.00027 | $0.00290 |
| Opus 5.5 | $0.00011 | $0.00116 |
| Sonnet 5.5 | $0.00005 | $0.00058 |
| Haiku 4.5 | $0.00003 | $0.00029 |
Grade A, and why
token-efficient-codex-run 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.
What it actually says
Token Efficient Codex Run
Goal
Complete tasks in large repositories while reading only the context needed for correctness.
When to use
Use for large repos, vague tasks, unknown codebases, or when the user asks for efficient agent behavior.
When not to use
Do not use when the task explicitly requires a full repository audit.
Inputs
Start from user request, README, AGENTS.md, package manifests, and the smallest likely affected files.
Workflow
- Restate the target outcome internally.
- Search by exact symbols, routes, filenames, or error text.
- Open only the top relevant files.
- Follow imports one hop at a time.
- Prefer existing tests and scripts over broad scanning.
- Stop reading once enough evidence exists to act safely.
- Keep changes localized.
- Expand scope only when evidence requires it.
Quality bar
A good run is efficient, grounded, and does not miss obvious dependencies.
Validation
Run targeted validation first, then broader checks only if the change touches shared infrastructure.
Final response
Report the minimal context used, changed files, validation commands, and any areas intentionally not inspected.
What ships with it
4 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.
- 2mo ago First seen · 49 lines · 27 tokens per session scan A 466ff4a633d1
token-efficient-codex-run is a skill published in the GitHub repository YankielDBC2/codex-skills-library (13 stars, last pushed 3mo ago), licensed MIT. It adds 27 tokens to every session and 290 once invoked, about $0.0001 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.
token-efficient-codex-run compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| token-efficient-codex-runYankielDBC2/codex-skills-library | Skill | 13 | 3mo ago | MIT | A | 27 | Codex |
| html-ppt-hermes-cyber-terminalnexu-io/open-design | Skill | 106k | yesterday | Apache-2.0 | A | 53 | Claude Code, Codex |
| developmentfengshao1227/ccg-workflow | Skill | 6.0k | 4d ago | MIT | A | 41 | Claude Code |
| debugging-executionsn8n-io/n8n | Skill | 210k | yesterday | none | A | 86 | Claude Code, Codex |
| tencent-docsUnicomAI/wanwu | Skill | 2.4k | 14d ago | Apache-2.0 | A | 209 | Claude Code, Codex |
| wechat-searchUnicomAI/wanwu | Skill | 2.4k | 14d ago | Apache-2.0 | A | 30 | Claude Code, Codex |
| flow-next-tracker-syncgmickel/flow-next | Skill | 717 | yesterday | MIT | A | 44 | Claude Code, Codex |