Design Child Contract
Compare 2-3 materially different child-level contract/interface shapes and write the chosen direction into `CONTRACT_DECISION.md` before planning when local contract shape is ambiguous.
Install
$ agentstack add skill-siarhei-belavus-agent-public-design-child-contract ✓ 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-siarhei-belavus-agent-public-design-child-contract) 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
design-child-contract
Use only when the child owns an ambiguous API/config/storage/hook/module contract.
Read first
../references/task-packet-contract.md../references/final-state-authoring-policy.md- child
INDEX.md,BRIEF.md,PLAN.md,AMENDMENTS.md,ARTIFACT_CANDIDATES.md - relevant parent initiative files referenced by the child brief
../../references/communication-mode.md
Workflow
- Generate 2-3 materially different contract shapes.
- Compare them on simplicity, coupling, flexibility, validation fit, and misuse risk.
- Choose one direction explicitly.
- Write
CONTRACT_DECISION.mdwith the chosen direction, rejected alternatives, and rationale. - Update child
INDEX.mdtoPacket phase: contract_decided.
Writing rule
Write the chosen contract as the current local design decision. Do not preserve competing contract vocabularies inside the canonical child packet after the decision is made.
Do not
- write implementation code
- leave the contract decision implicit in chat only
- create contract churn when the packet already has a clear contract surface
Communication
Honor active caveman mode for user-facing replies per ../../references/communication-mode.md. Keep durable artifacts normal unless the human asks otherwise. Drop caveman for safety/clarity when needed, then resume.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: siarhei-belavus
- Source: siarhei-belavus/agent-public
- 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.