Reconstruct your recent working context from your own chat history, live state, and the shared record (user reports, prior fixes, incidents), then hand back a tight current-state brief. Use for 'recall my work on X', 'catch me up', 'what have I been working on', 'where did I leave off', before starting or resuming work.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Spawn three parallel review subagents over the active transcript, surface learnings, and route each to a concrete edit on an existing skill. Use when the user says reflect.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when designing types, reviewing a function signature, or writing code in any statically-typed language. Make illegal states unrepresentable, brand semantic primitives, parse external data at boundaries, exhaust variants, derive from authoritative schemas.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when concurrent actors might write to the same file, branch, key, or state object. Eliminate the sharing first; serialize structurally only when one shared writer is a real invariant.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Spawn N parallel candidates at the same task, pick a base, graft the strongest parts of the losers into it. Use for /arena, 'arena this', 'throw it in the arena', or when one attempt at a non-trivial artifact would lock in the wrong shape.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Generate a project-local verification skill that drives your app the way a user does — any language, framework, or platform. Use for /create-verification-skill, "make a control skill for this repo", or when a project has no scripted way to prove UI/CLI/service behavior.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply before you trust, report, or act on a number you measured: a speedup, a regression, a throughput, a latency, or an eval result. Find what limits it, and rule out that it measured something other than the work you think.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Fan out N parallel workers, drain them, and return one report. Use for /swarm, 'swarm this', or parallel coverage, races, gauntlets, and exploration.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Periodic pass that keeps a project's verification skill and feature map honest: parallel source readers per feature, one live session driving every feature, at most one PR of proven corrections. Use for /maintain-verification-skill or "audit the verify skill".
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when two or more fixes that share one premise have failed the same gate. Write the premise down and test it directly before you write another fix that assumes it.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply before writing logic: choosing core types and data structures, sequencing scaffold-vs-feature work, asking what concurrent actors share. Get the data structures right so downstream code becomes obvious.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Restate the last message in plain human language, with no jargon.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Use only when the user explicitly asks for TDD, a failing test, or a regression test, OR when the bug has an obvious cheap local test target. Skip when the test path is unclear, expensive, integration-heavy, or not requested.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Find the mistakes agents keep repeating in this repo and make each one impossible. Try architecture first, then types, then a lint whose error names the fix, then a test, and write docs last. Prove each check fails on a real past mistake. Repeat this each time the operator corrects you. Use for /correct.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when debugging. Trace each symptom back to the first place the system went wrong and fix it there. A guard is a fix only when the state it handles is legitimate.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Vet a perf measurement (limiter, tuning, limits, errors, repeatability, relevance, and whether the work happened) before you report or act on it. Use when you run a benchmark or report a speedup or regression you measured.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Catch the user up on what changed in this chat since their last message, in plain words and small visuals. List every item waiting on them with what they need to decide it from the reply alone. Use for /ketchup.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when writing stateful logic, or when code branches a lot or repeats a shape assumption across files.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when designing commands, lifecycle steps, or processing loops that run amid crashes, restarts, and retries. Converge to the same end state regardless of partial prior runs.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Apply when tempted to ask 'should I do X?' on reversible work.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Use for "how does X work", code walkthroughs before changing something, and placement / ownership / layering questions ("where should this live", "which package owns this", "is this the right layer"). Explains subsystem architecture, runtime flow, onboarding mental models. Use why for motivation.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Layered technical-writing standard: Diátaxis structure, Google developer style sentences, STE instruction rules, Global English syntax. Use for /technical-writing or when writing or reviewing docs, RFCs, readmes, PR descriptions, or commit messages.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Use for "automate me", "create/update/refresh my -mode skill", "turn/capture my preferences or working style into a skill", or wanting agents to follow how the user works. Drafts or revises a personal -mode skill via create-skill + unslop, optionally pulling fresh evidence from recent transcripts.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026
Find what a change could break somewhere else before it ships, beyond the diff, and prove the one fact it's safe because of by running real code instead of writing it up. Use for 'blast radius of X', 'what could this break', or reviewing a small diff you don't trust.
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backnotprop/pstack☆ 2.5KUpdated Oct 21, 2026