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-freezegit 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-freeze)<a href="https://agentmods.dev/skills/oliver-kriska/claude-elixir-phoenix/phx-freeze"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/phx-freeze/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-freeze"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/phx-freeze.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 | $0.00030 | $0.00476 |
| Opus 5 | $0.00015 | $0.00238 |
| Sonnet 5 | $0.00006 | $0.00095 |
| Haiku 4.5 | $0.00003 | $0.00048 |
Grade A, and why
phx-freeze 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 7d 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 — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Freeze — advisory edit scope
Apply a current-session instruction that limits which files this agent may edit. This generated runtime does not install an enforcement hook, so the scope is advisory rather than a technical lock. Never claim that edits are blocked by the runtime.
Usage
phx-freeze
phx-freeze lib/app_web priv/repo
phx-freeze status
phx-freeze off
Treat the text after the skill invocation as follows:
| Invocation | Current-session behavior |
|---|---|
| No arguments | Do not edit files; investigation and reporting remain read-only. |
| Path prefixes | Edit only files under the listed project-relative prefixes. |
status |
Report the advisory scope currently established in this conversation. |
off |
Clear the advisory scope for subsequent work. |
Do not create .claude/.freeze. That sentinel belongs to the canonical Claude
Code plugin and could affect a later Claude Code session even though this runtime
cannot enforce or clear it reliably.
Iron Laws
- Never describe this scope as enforced — it is a binding instruction for the current agent, not a runtime or security boundary.
- Never create or modify
.claude/.freezein a generated runtime — no matching enforcement component is installed here. - Honor the active scope until the user clears it or the focused task ends — ask before editing outside listed prefixes.
- Keep paths project-relative —
lib/fooincludes that directory and its descendants, not a sibling such aslib/foobar.
Native enforcement option
This skill remains advisory and never creates Claude's .claude/.freeze
sentinel. When the generated Amp plugin is installed, use the phx: edit lock
palette command for a persistent workspace lock enforced at Amp's tool.call
boundary. It blocks Amp-recognized edits outside the selected scope and disables
shell tools while active. Unknown third-party mutating tools remain outside
Amp's file-classification helper, so this is not complete Claude-hook parity.
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.
- 7d ago First seen · 54 lines · 30 tokens per session scan A ffcfbb85e851
phx-freeze is a skill published in the GitHub repository oliver-kriska/claude-elixir-phoenix (542 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 476 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.
Other skills, from other repositories
setup
Use when superb's skills need their dependencies installed or checked — "set up superb", "install the dependencies", "why does pipeline say superpowers is missing", after a fresh plugin install, or on a new machine. Also use when a skill fails complaining that a superpowers sub-skill cannot be found.
bird-bookmark-folders
A skill for organising X, formerly called Twitter, bookmark folders, also known as collections.
handoff
A workflow for creating a concise handoff document for another coding agent, computer, or new session. It can store temporary handoffs or persistent task notes in Obsidian, with large files kept separately in iCloud AgentArtifacts.
disk-space-analyzer
Analyze disk space and find cleanable files. Use when user wants to clean disk, free up space, find large files, analyze disk usage, or asks about what's taking up space. Triggers on requests like "clean my disk", "free up space on C:", "find large files", "what's using my disk space", "disk cleanup".
handoff
Compact the current conversation into a handoff document for another agent to pick up.
zoom-out
Tell the agent to zoom out and give broader context or a higher-level perspective. Use when you're unfamiliar with a section of code or need to understand how it fits into the bigger picture.