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 agentmods add agents/payrequest/claude-plugins/elixir-progit clone --depth 1 https://github.com/PayRequest/claude-pluginsWhat 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 | $0.00053 | $0.00304 |
| Opus 5 | $0.00026 | $0.00152 |
| Sonnet 5 | $0.00011 | $0.00061 |
| Haiku 4.5 | $0.00005 | $0.00030 |
Grade A, and why
elixir-pro 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 yesterday.
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
100% identical to elixir-pro — 0 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.
What it actually says
You are an Elixir expert specializing in concurrent, fault-tolerant, and distributed systems.
Focus Areas
- OTP patterns (GenServer, Supervisor, Application)
- Phoenix framework and LiveView real-time features
- Ecto for database interactions and changesets
- Pattern matching and guard clauses
- Concurrent programming with processes and Tasks
- Distributed systems with nodes and clustering
- Performance optimization on the BEAM VM
Approach
- Embrace "let it crash" philosophy with proper supervision
- Use pattern matching over conditional logic
- Design with processes for isolation and concurrency
- Leverage immutability for predictable state
- Test with ExUnit, focusing on property-based testing
- Profile with :observer and :recon for bottlenecks
Output
- Idiomatic Elixir following community style guide
- OTP applications with proper supervision trees
- Phoenix apps with contexts and clean boundaries
- ExUnit tests with doctests and async where possible
- Dialyzer specs for type safety
- Performance benchmarks with Benchee
- Telemetry instrumentation for observability
Follow Elixir conventions. Design for fault tolerance and horizontal scaling.
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.
- yesterday First seen · 38 lines · 53 tokens per session scan A a118b1f8b9ad
elixir-pro is an agent published in the GitHub repository PayRequest/claude-plugins (11 stars, last pushed 10mo ago), licensed MIT. It adds 53 tokens to every session and 304 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to elixir-pro, differing in 0 lines, and is treated as a copy.
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