Functional programming patterns with immutable data. Use when writing logic or data transformations.
EnglishUse when modifying, removing, or refactoring code that lacks test coverage. Emphasizes the danger of untested changes and the RGR workflow to add characterization tests before modifications.
EnglishTurn 'should never happen' into 'cannot happen' by defining owned inductive invariants and enforcing them at parse/construct/API/DB/lock/txn boundaries with a verification signal. Use when prompts mention invariants, impossible states, validation sprawl, cache/index drift, idempotency/versioning, retries/duplicates/out-of-order events, race/linearization bugs, loop correctness, or hardening another workflow (for example /tw-fix) with invariant checks first.
English
AGENT SKILLS ATLASIncludes Functional, Legacy Code Safety, Tw Invariant Ace, and other workflows.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLISupported by the Atlas install prompt. Skill-specific requirements vary.
Pack stats
What’s included
Functional
Functional programming patterns with immutable data. Use when writing logic or data transformations.
Legacy Code Safety
Use when modifying, removing, or refactoring code that lacks test coverage. Emphasizes the danger of untested changes and the RGR workflow to add characterization tests before modifications.
Split
Split a large branch into N stacked logical branches with hunk-level granularity
Tw Invariant Ace
Turn 'should never happen' into 'cannot happen' by defining owned inductive invariants and enforcing them at parse/construct/API/DB/lock/txn boundaries with a verification signal. Use when prompts mention invariants, impossible states, validation sprawl, cache/index drift, idempotency/versioning, retries/duplicates/out-of-order events, race/linearization bugs, loop correctness, or hardening another workflow (for example /tw-fix) with invariant checks first.
Quick start
- Choose your skills. Select individual skills above, or choose the entire pack.
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Try it with your agent
After installation, start with a request like:
Use the Functional skill to help with my task.
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