0xCozart

Use when working in the iota-gaskit repo or integrating GasKit in another app, including repo navigation, SDK/gateway/demo/docs changes, local verification, testnet readiness, sponsor-gas safety, or IOTA sponsored transaction flows.

Use when a Codex agent needs to train, audit, and promote or reject repository-specific AGENTS.md instructions with SkillOpt-Codexy. Applies to configuring a project repo for SkillOpt training, creating repeatable run scripts, running Codex-backed optimization, writing run reports, and deciding whether candidate instructions should be promoted.

Use for configurable, high-rigor app execution across repos. Selects the lightest safe workflow mode from an app profile, creates or uses a slice manifest, and routes product, tracker, code-intelligence, UI/UX, and verification gates without hard-coding one app's rules.

Use when working in the vallum repo or integrating Vallum in another app, and when extending the Vallum fork, including repo navigation, SDK/gateway/demo/docs changes, local verification, agent migration docs, wallet safety, testnet readiness, sponsor-gas safety, or IOTA sponsored transaction flows.

Adversarially harden code changes, plans, migrations, designs, and implementations before shipping. Use when the user asks to check mistakes, edge cases, second-order effects, risks, regressions, tests, performance bottlenecks, algorithmic complexity, or production failure modes. Also use for prompts like "harden this", "review before merge", "check the plan", "find what will break", or "improve if needed". Do not use for casual explanations or purely cosmetic rewrites.