ddg-skills-starter
Five free guardrail skills for agents that touch money, audits, or outbound
messaging. No server, no payment, no dependencies — each skill is one SKILL.md
the model loads when its trigger matches.
| Skill | Use it when | Kind |
|---|---|---|
ddg-fleet-audit-starter | "Are my agents auditable?" — before buying or building fleet-audit tooling | guardrail |
unknown-is-not-pass | Reviewing any report that claims something is "fine" | guardrail |
agent-price-parity-check | Publishing, changing, or disputing a per-call API price | workflow |
cron-outreach-safety-gate | Before enabling any cron that sends email or posts publicly | guardrail |
facilitator-health-check | Picking an x402 facilitator, or settles start failing | guardrail |
Why these five
Each one is a distilled failure mode from operating a 400+-route paid edge:
- UNKNOWN is not PASS — the expensive audit failure is a missing verdict rendered as a green check. Forces PASS / FAIL / UNKNOWN on every claim.
- Price parity — the docs price, the 402 price, and the cached discovery price drift apart. One 5-minute check for all three.
- Cron outreach gate — wrong sender identity, wrong audience, no rate ceiling, zombie crons. Catches all four before the domain gets burned.
- Facilitator health — supported schemes/networks, envelope contract, rate-limit shape, settle-gas health, indexing behavior. Five probes.
- Fleet audit starter — do your agents produce proof or just logs? Answer that before paying for any audit tooling.
Install
/plugin install ddg-skills-starter@ddg-agent-plugins
Skills land namespaced: /ddg-skills-starter:unknown-is-not-pass, and the model
loads them automatically when a trigger matches.
Layout
ddg-skills-starter/
├── plugin.json
├── .claude-plugin/plugin.json
├── .cursor-plugin/plugin.json
└── skills/
├── ddg-fleet-audit-starter/SKILL.md
├── unknown-is-not-pass/SKILL.md
├── agent-price-parity-check/SKILL.md
├── cron-outreach-safety-gate/SKILL.md
└── facilitator-health-check/SKILL.md
Source
Mirrored from github.com/0xcircuitbreaker/agent-skills so the same five skills install by name in Claude Code, Cursor, Codex, and VS Code. The paid suite (fleet provenance, settlement evidence, credential custody, order recovery) lives there too.