JustHandled Labs
// agent-native

Model Migration Checker

Find the model-version coupling that breaks when you move to a new model: hardcoded names, renamed parameters, token-limit assumptions, response-format and tool-schema coupling, and hardcoded cost constants.

What it flags

How to run

Point it at your repo. Read-only. Match patterns load from an editable rules file you update as new models ship.

Good to know

This is heuristic. It flags coupling to review before and after a swap; the rules table is as current as you keep it.

// choose with context

Is Model Migration Checker the right skill?

Best fit

Finds model-version coupling that breaks when you move to a new model: hardcoded names, renamed parameters, token-limit assumptions, response-format and tool-schema coupling, and hardcoded cost constants. Read-only, with an editable rules file.

It returns

Finds model-version coupling that breaks when you move to a new model: hardcoded names, renamed parameters, token-limit assumptions, response-format and tool-schema coupling, and hardcoded cost constants. Read-only,….

Do not use it as

Do not treat a successful run as proof beyond the supplied files, declared scope, and evidence the skill actually checked.

Compatibility, access, version, and licence

Reads or accesses
Only the files or context you deliberately provide; review the listing before granting additional access.
Compatibility
Agents that read the open SKILL.md format. Verify runtime and service requirements at the purchase or install destination.
Version
Verify the current package version at the linked destination.
Licence
Review the package licence and seller terms at the linked destination.

What happens next

The Agensi listing opens at the current offer. Complete purchase there, inspect SKILL.md and its bundled files, then add the complete folder to your agent.

Questions

Why does this never go out of date?

New models ship constantly, and each swap quietly breaks something. The check is evergreen.

Does it change anything?

No. Read-only. It flags coupling for you to review.

Swap models without the silent breakage.

Current price and purchase option are shown on Agensi. Instant download. Works with any agent that reads SKILL.md.

Get the Model Migration Checker on Agensi