Fizz Sync
Reconcile an existing Fizz harness with a changed source tree.
Install
npx skills add pashov/skills --skill fizz-sync -g -a claude-code -y- Repository
- pashov/skills1.3k
- Category
- Business
- Updated
- 14d ago
- License
- MIT
- Context cost
- Mediumabout 3,000 tokens
- Runs scripts
- No, instructions only
What it does
Reconcile an existing Fizz harness with a changed source tree. Detects added/removed/changed contract functions, quarantines stale properties, regenerates drifted handler stubs, and refreshes the snapshot. Trigger on "fizz-sync", "resync fuzzing", "sync fuzz harness", "refresh fuzzing properties", "fuzzing drift check".
Fizz Sync Skill, fizz-sync
Reconcile a project previously processed by the Fizz skill with a changed source tree. This is the re-use entry point: after the user modifies Solidity sources, fizz-sync detects drift, quarantines stale properties, regenerates drifted handler stubs, and refreshes the snapshot, WITHOUT re-running the full 11-step pipeline.
When to use
- The source contracts under
src/changed sincefizzlast ran. - A property in
PROPERTIES.mdfails to compile or references a function that no longer exists. - The user added new external functions they want fuzzed.
- The user wants a "is anything stale?" health check before re-running a campaign.
Parameters
SUITE_DIR: Solidity suite directory relative to project root (default:test/fizz). Use the same value that was passed to thefizzskill when the harness was generated.META_DIR: Metadata directory relative to project root (default:fizz_data). Use the same value that was passed to thefizzskill.
Arguments
--init, one-time bootstrap: create{META_DIR}/last-run.jsonfrom the current state. Use this the first time fizz-sync runs on a project (or when adopting fizz-sync on a project that was fuzzed before the snapshot format existed).--only <Contract>, scope the sync to a single contract name.--apply, actually perform the automatic fixes. Without--apply, fizz-sync runs in dry-run mode and only reports drift.--no-property-quarantine, skip the property quarantine phase (useful if the user wants to handle stale properties manually).
The default (no flags) runs a dry-run drift report.
Preconditions
- The project must have been processed by the
fizzskill at least once. Look for:{PROJECT_ROOT}/{META_DIR}/contracts.json{PROJECT_ROOT}/{META_DIR}/entry-point-selection.json{PROJECT_ROOT}/{SUITE_DIR}/(suite directory)
- If any of the above are missing, stop and tell the user to run
fizzfirst.


