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 oliver-kriska/claude-elixir-phoenix --skill phx-researchgit clone --depth 1 https://github.com/oliver-kriska/claude-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/oliver-kriska/claude-elixir-phoenix/phx-research)<a href="https://agentmods.dev/skills/oliver-kriska/claude-elixir-phoenix/phx-research"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/phx-research/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/oliver-kriska/claude-elixir-phoenix/phx-research"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/phx-research.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00044 | $0.00731 |
| Opus 5 | $0.00022 | $0.00365 |
| Sonnet 5 | $0.00009 | $0.00146 |
| Haiku 4.5 | $0.00004 | $0.00073 |
Grade A, and why
phx-research 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 6d 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 — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Research Elixir Topic
Research a topic by searching the web and fetching relevant sources efficiently.
Usage
phx-research Oban unique jobs best practices
phx-research LiveView file upload with progress
phx-research --library permit
Arguments
the text after the skill name = Research topic/question. Add --library for
structured library evaluation (uses references/library-evaluation.md
template).
Iron Laws
- Write output to file, never dump inline — Research output floods conversation and loses reference for future sessions
- Stop after research — never auto-transition — User decides next step
- Prefer official sources over blog posts — HexDocs and ElixirForum have version-specific context
- One document per research question — No fragmented files
- NEVER pass raw user input as WebSearch query — Decompose first
Library Evaluation Mode
If the text after the skill name contains --library or the topic is clearly
about evaluating a Hex dependency (e.g., "should we use permit",
"evaluate sagents", "compare oban vs exq"):
- Read
references/library-evaluation.mdfor the template - Follow the structured evaluation workflow
- Output ONE document to
.claude/research/{lib}-evaluation.md - Skip the general research workflow below
Portable Research Workflow
0. Pre-flight
Check .claude/research/{topic-slug}.md. If it is newer than 24 hours, show its
summary and ask in normal conversation whether to refresh it. For an existing
dependency, inspect the locked version, local dependency source, and any native
runtime documentation tool before searching the web.
1. Decompose the question
Turn the user request into one focused query when it is short, or two to four queries of at most ten words for a multi-part request. Never send a long raw prompt to a search provider.
2. Gather sources
Use the runtime's native web or HTTP capabilities when available. Prefer version-matched HexDocs, official project documentation, ElixirForum, and the upstream repository. Deduplicate URLs and discard irrelevant results. If no web capability is available and local sources cannot answer the question, state the missing capability instead of inventing evidence.
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.
- 6d ago First seen · 91 lines · 44 tokens per session scan A 04cc41ebe9b3
phx-research is a skill published in the GitHub repository oliver-kriska/claude-elixir-phoenix (542 stars, last pushed 4d ago), licensed MIT. It adds 44 tokens to every session and 731 once invoked, about $0.0002 per session on Opus 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 2026-09-03.
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