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Get Started Free →Plan conversion of an existing Custom GPT into a portable Agent Skill. Use when a GPT already has instructions, knowledge files, actions, conversation starters, test prompts, or usage history and the user needs a capability map, semantic-loss analysis, reusable skill boundary, migration plan, or handoff to okhp3-skill-foundry.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-03 | ✗→✓ | ▲ Improved | -4% | 0% |
| case-06 | ✗→✓ | ▲ Improved | -30% | 0% |
| case-09 | ✗→✓ | ▲ Improved | 98% | 0% |
| case-10 | ✗→✓ | ▲ Improved | 80% | 0% |
| case-12 | ✗→✓ | ▲ Improved | 21% | 0% |
OverKill Hill P³ · overkillhill.com · github.com/OKHP3
Convert a configured GPT into a durable, runtime-portable skill plan without pretending that GPT configuration and Agent Skill instructions are equivalent. This skill plans and audits the conversion; okhp3-skill-foundry authors and benchmarks the final SKILL.md.
| In scope | Out of scope | |---|---| | Asset inventory, capability mapping, boundary design, portability analysis, semantic-loss tracking, migration sequencing, and Foundry handoff | Exporting private platform data, bypassing permissions, writing production integrations, or claiming feature parity without verification |
available, partial, missing, or unverified and label its claim class.preserve, rewrite, externalize, replace, verify, or drop. Assign acceptance criteria and dependencies. Never carry secrets or private data into a public skill.ready_for_foundry, needs_source_artifacts, partial_port, not_a_skill, or blocked_by_permissions. Explain what must happen next.Return these sections in order:
asset, status, portable_value, destination, and evidence.references/conversion-dossier-schema.md.Use public-safe or synthetic examples. Treat unknown platform behavior as unverified; do not invent an export format or claim that hidden GPT behavior can be reproduced in a SKILL.md.
okhp3-skill-foundry exactly what to build and measure.Read references/conversion-dossier-schema.md before producing a machine-readable dossier. Use evals/evals.json to calibrate eval design. When the verdict is ready_for_foundry, load okhp3-skill-foundry for architecture, drafting, live evaluation, grading, benchmarking, and fix loops.
Built by Jamie Hill · OverKill Hill P³ Published at github.com/OKHP3 Part of the OKHP3/skillz Agent Skill library. MIT License -- free to use, fork, and adapt. A nod to the source is appreciated.
Other measured skills in the registry, with their headline benchmark lift.