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-examplesgit 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-examples)<a href="https://agentmods.dev/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-examples"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-examples/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-examples"><img src="https://agentmods.dev/badge/skills/ccarvalho-eng/codex-elixir-phoenix/elixir-phoenix-examples.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 | $0.00024 | $0.01062 |
| Opus 5.5 | $0.00010 | $0.00425 |
| Sonnet 5.5 | $0.00005 | $0.00212 |
| Haiku 4.5 | $0.00002 | $0.00106 |
Grade A, and why
elixir-phoenix-examples 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 1mo 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.
This is a copy
88% identical to examples — 31 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Examples & Walkthroughs
Official Phoenix Guides (Reference)
For standard implementation patterns, always check official guides first:
| Topic | Guide |
|---|---|
| Contexts | hexdocs.pm/phoenix/contexts |
| Ecto Basics | hexdocs.pm/phoenix/ecto |
| LiveView | hexdocs.pm/phoenix_live_view |
| Authentication | mix phx.gen.auth |
| Channels | hexdocs.pm/phoenix/channels |
| Testing | hexdocs.pm/phoenixelixir-phoenix-testing |
| Deployment | hexdocs.pm/phoenixelixir-phoenix-deployment |
Plugin-Specific Patterns
Patterns NOT in official guides (unique to this plugin):
Tidewave Integration Workflow
# 1. Check if Tidewave is running
/mcp
# 2. If connected, debug with runtime tools
# Get exact docs for YOUR dependency versions
mcp__tidewave__get_docs "Ecto.Query"
# Execute code in running app
mcp__tidewave__project_eval "MyApp.Accounts.list_users() |> length()"
# Query database directly
mcp__tidewave__execute_sql_query "SELECT count(*) FROM users"
Multi-Agent Review Workflow
# 1. Plan feature with specialist agents
`elixir-phoenix-plan` Add user avatars with S3 upload
# 2. After implementation, review with multiple perspectives
`elixir-phoenix-review` lib/my_app/accounts.ex # Elixir idioms
# Security analyzer runs automatically on auth code
# 3. Before deployment
# Deployment validator checks production readiness
Iron Laws Enforcement
This plugin enforces non-negotiable rules across all agents:
Elixir Idioms:
- NO process without runtime reason
- Messages are copied (keep small)
- Changesets for external data
LiveView:
- NEVER query DB in mount
- ALWAYS use streams for lists
- RE-AUTHORIZE in every handle_event
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.
- 1mo ago First seen · 142 lines · 24 tokens per session scan A 076043c9ce7b
elixir-phoenix-examples is a skill published in the GitHub repository ccarvalho-eng/codex-elixir-phoenix (11 stars, last pushed 5mo ago), licensed MIT. It adds 24 tokens to every session and 1,062 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to examples, differing in 31 lines, and is treated as a copy.
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