Writing Agent Skills With Tdd
Use when creating or changing an agent skill whose behavior, routing, discipline, or technique must improve over a measurable baseline rather than merely sound persuasive.
Install
$ agentstack add skill-casioreview20-glitch-forge-os-writing-agent-skills-with-tdd ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-casioreview20-glitch-forge-os-writing-agent-skills-with-tdd) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Writing Agent Skills with TDD
Core principle
Write pressure or application scenarios before the skill. Rerun, close new loopholes, and preserve the evidence matrix. The runtime owns deterministic scope, coverage, policy, and evidence checks; the agent owns only the judgment that cannot be reduced safely to code.
Do not activate when
- project-specific instructions that are not reusable
- a mechanical rule better enforced entirely in code
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: casioreview20-glitch
- Source: casioreview20-glitch/forge-os
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.