Borrowing it
Nothing to install: this file belongs to mastra-ai/mastra. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/mastra-ai/mastra/main/.claude/skills/mastra-smoke-test/SKILL.mdgit clone --depth 1 https://github.com/mastra-ai/mastraWrote 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/mastra-ai/mastra/mastra-smoke-test)<a href="https://agentmods.dev/skills/mastra-ai/mastra/mastra-smoke-test"><img src="https://agentmods.dev/badge/skills/mastra-ai/mastra/mastra-smoke-test/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/mastra-ai/mastra/mastra-smoke-test"><img src="https://agentmods.dev/badge/skills/mastra-ai/mastra/mastra-smoke-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Prompt Injection · line 139 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 141 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 145 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
- medium Prompt Injection · line 147 Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
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 | $0.00044 | $0.03434 |
| Opus 5 | $0.00022 | $0.01717 |
| Sonnet 5 | $0.00009 | $0.00687 |
| Haiku 4.5 | $0.00004 | $0.00343 |
Grade A, and why
mastra-smoke-test scanned grade A with 1 finding 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 13d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
For local release smoke tests, do **both** API/curl checks and a Studio browser pass unless `--skip-browser` is explicitly requested or browser access is genuinely blocked. API checks prove runtime endpoints work; browse The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
What ships with it
30 files 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.
- references/alpha-publish.md 1.5 KB
- references/alpha-versioning-pr.md 1.8 KB
- references/architecture.md 813 B
- references/cloud-advanced.md 2.4 KB
- references/cloud-deploy.md 8.7 KB
- references/common-errors.md 1.7 KB
- references/environment-variables.md 1.3 KB
- references/gcp-debugging.md 716 B
- references/local-setup.md 4.7 KB
- references/release-scope-discovery.md 8.5 KB
- references/release-smoke.md 991 B
- references/stable-partial-publish-recovery.md 1.6 KB
- references/stable-release-smoke.md 2.7 KB
- references/storage-provider-migration-smoke.md 1.6 KB
- references/targeted-feature-smoke.md 4.7 KB
- references/tests/agents.md 3.6 KB
- references/tests/errors.md 6.5 KB
- references/tests/experiments.md 6.5 KB
- references/tests/mcp.md 4.1 KB
- references/tests/memory.md 5.1 KB
- references/tests/scorers.md 3.8 KB
- references/tests/server.md 3.4 KB
- references/tests/setup.md 10 KB
- references/tests/studio.md 3.5 KB
- references/tests/tools.md 3.1 KB
- references/tests/traces.md 9.0 KB
- references/tests/workflows.md 3.1 KB
- scripts/check-versioning-pr.sh 5.6 KB runs code
- scripts/discover-release-scope.sh 5.0 KB runs code
- scripts/test-server.sh 2.6 KB runs code
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.
- 13d ago First seen · 311 lines · 44 tokens per session scan A 757f176b044b
mastra-smoke-test is a skill published in the GitHub repository mastra-ai/mastra (27,953 stars, last pushed today), with no licence file. It adds 44 tokens to every session and 3,434 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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