Agent skills for ChatGPT

Find evidenced expansion whitespace; do not assert demand.

Kotlin Multiplatform expect/actual patterns for platform-specific APIs.

Audits operating expenses and SaaS subscriptions to identify defensible cost reductions, seat rightsizing, and vendor renegotiations.

Just say what you spent — your AI logs it, categorizes it, and tracks it against your budget.

Project knowledge accumulation system - learn from practice, avoid repeating mistakes

Map the full ecosystem of touchpoints, channels, and relationships across a service.

Toolkit for structuring hypotheses, variants, guardrails, and measurement

The student is unsure whether to use the expert opinion style or the judgment style.

Use when the user asks for a rich explanation of a code change, diff, branch, or PR.

Create a durable, visual teaching artifact — plus an optional check-in (predict-then-reveal for diffs, corrected exercises) that makes it…

Use when explaining code, technical concepts, or implementation decisions.

Explicit Identity Across Boundaries

Build a complete explicit instruction sequence from teacher modelling through guided practice to independent work.

Systematic framework for analyzing product documents (PRDs, feature specs, user stories, roadmaps, one-pagers) to identify gaps, generate…

Performs systematic, hypothesis-driven exploration and debugging across complex codebases using tree-search algorithms and domain adapters.

This skill should be used when the user asks to "do some exploratory testing", "write a test charter", "explore this feature for bugs"…

Find where an AI/LLM application is failing in production and surface the failure patterns, working from real traces.

Investigates distributed application performance using PostHog APM (OpenTelemetry span) data via MCP.

Guides exploration of $autocapture events captured by posthog-js to understand user interactions, find CSS selectors (especially data-attr…

Explore and diagnose a PostHog endpoint's execution logs — error messages, failed runs, cache misses, slow runs, or unexpected row counts…

Explorium API for external data enrichment.