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 Sounio-lang/sounio --skill sounio-tests-suitegit clone --depth 1 https://github.com/Sounio-lang/sounioWrote 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/sounio-lang/sounio/sounio-tests-suite)<a href="https://agentmods.dev/skills/sounio-lang/sounio/sounio-tests-suite"><img src="https://agentmods.dev/badge/skills/sounio-lang/sounio/sounio-tests-suite/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/sounio-lang/sounio/sounio-tests-suite"><img src="https://agentmods.dev/badge/skills/sounio-lang/sounio/sounio-tests-suite.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 | $0.00049 | $0.00263 |
| Opus 5 | $0.00024 | $0.00131 |
| Sonnet 5 | $0.00010 | $0.00053 |
| Haiku 4.5 | $0.00005 | $0.00026 |
Grade A, and why
sounio-tests-suite 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 11d 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.
What it actually says
Sounio Tests Suite
Overview
Write minimal, high-signal tests that protect language semantics, diagnostics, and regressions.
Workflow
1) Choose the right test bucket
tests/run-pass/: should compile and runtests/compile-fail/: should fail to compiletests/ui/: diagnostics/error message matching via//@ error-pattern:compiler/tests/: Rust integration tests for compiler subsystems
2) Keep tests small and explicit
- Avoid relying on features listed as missing in
compiler/docs/KNOWN_LIMITATIONS.md. - Prefer one behavior per test file; add
//@ ignoreif it’s documenting an aspirational feature.
3) Run the narrowest validation first
- If you changed Rust compiler code:
cd compiler && cargo test <name> - If you changed language behavior: run the smallest relevant test subset first
References
- Test annotations and patterns:
references/test-annotations.md
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.
- 11d ago First seen · 34 lines · 49 tokens per session scan A 3b801bd59e4f
sounio-tests-suite is a skill published in the GitHub repository Sounio-lang/sounio (6 stars, last pushed today), licensed Apache-2.0. It adds 49 tokens to every session and 263 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 2026-08-31.
Other skills, from other repositories
edge-python
Write, run, test and package Edge Python programs with the edge CLI. Use when editing .py files in an Edge Python project or when the user asks for Edge Python code.
vera-language
Write programs in the Vera programming language. Use when asked to write, edit, debug, or review Vera code (.vera files). Vera is a statically typed, purely functional language with algebraic effects, mandatory contracts, and typed slot references (@T.n) instead of variable names.
cargo-fuzz
Sets up and runs cargo-fuzz, the standard fuzzing tool for Cargo-based Rust projects. Covers cargo fuzz init, the nightly toolchain requirement, fuzztarget! harnesses, Arbitrary-derived structured inputs, sanitizer options, cargo fuzz coverage, and reproducing a crash artifact. Use when fuzzing a Rust crate, writing a…
mutation-test
Run mutation tests with cargo-mutants to verify test quality. Reports caught, missed, and timed-out mutants.
check-impl
Implementation verification - runs format, lint, test, and build checks on the workspace.
rust-development
Idiomatisk Rust-utvikling med cargo, clippy, error handling, async/tokio, unsafe og testing.