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CONTRIBUTOR TOOL - Track CC changelog, extract new versions since last check, analyze impact on plugin (breaking changes, opportunities, deprecations). Run periodically or before releases. NOT part of the distributed plugin.
Passed 14 of 21 test cases with the skill, and 4 of 21 without it.
and 9 more in the full report
11 fixed4 passed either way8 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
When classifying impact during a Claude Code changelog check, where are the mapping guidelines and rules loaded from?
| Checked | Without skill | With skill |
|---|---|---|
| Loads cross-referencing criteria from analysis-rules.md. | Missed | Passed |
The instructions your model reads when the skill loads.
Tracks Claude Code releases against the plugin. Fetches the CC changelog, extracts entries newer than last check, and analyzes impact on plugin components (agents, skills, hooks, config).
/cc-changelog # Check for new CC versions, analyze impact
/cc-changelog --full # Re-analyze all versions (ignore last check)
/cc-changelog --set=2.1.85 # Reset last checked version (then re-run)
bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh"
If output starts with STATUS: UP_TO_DATE → report "No new CC versions" and stop.
If STATUS: NEW_VERSIONS → continue with the changelog content below the header.
For --full: run bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh" --all
For --set=X: run bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh" --set=X, then re-run without flag.
Read the new changelog entries. For EACH entry, classify into one of:
| Category | Meaning | Action |
|---|---|---|
| BREAKING | May break existing plugin functionality | Immediate fix required |
| OPPORTUNITY | New CC feature the plugin could use | Add to backlog/plan |
| RELEVANT FIX | CC fixed a bug we worked around | Check if workaround can be removed |
| DEPRECATION | CC removing something we use | Plan migration |
| INFO | Good to know, no action needed | Log in memory update |
test cases passed, vs 4 / 21 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.