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 ccarvalho-eng/codex-elixir-phoenix --skill elixir-phoenix-techdebtgit clone --depth 1 https://github.com/ccarvalho-eng/codex-elixir-phoenixWrote 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/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-techdebt)<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-techdebt"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-techdebt/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/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-techdebt"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-techdebt.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 | $0.00023 | $0.00539 |
| Opus 5.5 | $0.00009 | $0.00216 |
| Sonnet 5.5 | $0.00005 | $0.00108 |
| Haiku 4.5 | $0.00002 | $0.00054 |
Grade A, and why
elixir-phoenix-techdebt 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.
How it starts
The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Technical Debt Detection
Find and eliminate duplicate code patterns, anti-patterns, and refactoring opportunities in Elixir/Phoenix projects.
Iron Laws - Never Violate These
- Search before refactoring - Understand full scope of duplication before extracting
- Three strikes rule - Extract shared code only after 3+ duplications
- Prefer composition - Use behaviours and protocols over inheritance-style abstractions
- Test coverage first - Ensure tests exist before refactoring duplicated code
Analysis Checklist
1. Run Credo for Automated Detection
Run mix credo --strict.
Focus on:
- Design issues (duplication, complexity)
- Consistency issues (naming, patterns)
- Refactoring opportunities
2. Find Duplicate Ecto Query Patterns
Use rg to search for repeated Repo calls (Repo.get!, Repo.get, Repo.one) in lib/**/*.ex.
Use rg to find duplicate query patterns (from.*in.*where) in lib/**/*.ex.
3. Find Duplicate Validation Logic
Use rg with output_mode: "count" to count def changeset occurrences in lib/**/*.ex.
Use rg to find repeated validations (validate_required, validate_format) in lib/**/*.ex.
4. Find Copy-Pasted Controller Actions
Use rg to find similar action patterns (def create, def update, def delete) in lib/*_web/**/*.ex.
Common Duplication Patterns
| Pattern | Symptom | Solution |
|---|---|---|
| Repeated queries | Same Repo.get in multiple contexts |
Create shared query module |
| Duplicate validations | Same validate_* calls |
Extract to shared changeset |
| Similar controllers | Copy-pasted CRUD actions | Use Phoenix generators consistently |
| Repeated transforms | Same Enum.map patterns |
Extract to domain module |
Reporting Format
For each duplication found, report:
- Location: File paths and line numbers
- Pattern: What code is duplicated
- Extraction: Suggested shared function/module
- Effort: Low/Medium/High to fix
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.
- 2mo ago First seen · 66 lines · 23 tokens per session scan A 6840bba82b33
elixir-phoenix-techdebt is a skill published in the GitHub repository ccarvalho-eng/codex-elixir-phoenix (11 stars, last pushed 5mo ago), licensed MIT. It adds 23 tokens to every session and 539 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 2026-08-30.
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