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 skills/joelmoss/proscenium/testnpx skills add joelmoss/proscenium --skill testgit clone --depth 1 https://github.com/joelmoss/prosceniumWhat 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 | $0.00026 | $0.00250 |
| Opus 5 | $0.00013 | $0.00125 |
| Sonnet 5 | $0.00005 | $0.00050 |
| Haiku 4.5 | $0.00003 | $0.00025 |
Grade A, and why
test 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 today.
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.
What it actually says
Test Runner
Run tests for Proscenium.
Usage
/test— Run all Ruby and Go tests/test test/builder_test.rb— Run a specific Ruby test file/test test/builder_test.rb -n test_method_name— Run a specific Ruby test method/test test/builder_test.rb:10— Run a specific Ruby test at line number/test ./test -run TestBuild— Run specific Go tests
Steps
- Determine what to run based on arguments:
- No args: Run both Go and Ruby tests
.rbfile or Ruby-style args: Run Ruby tests- Go path/pattern: Run Go tests
- For Ruby tests, compile the Go binary first:
bundle exec rake compile:local - Run the appropriate command:
- Ruby:
bundle exec rails test <args> - Go:
go test <args>
- Ruby:
- Report results
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.
- today First seen · 29 lines · 26 tokens per session scan A a5bb9b1b5bb6
test is a skill published in the GitHub repository joelmoss/proscenium (104 stars, last pushed 6d ago), licensed MIT. It adds 26 tokens to every session and 250 once invoked, about $0.0001 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 2026-09-01.
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