[agents](https://carteblanche.com/index.md?kind=agent) / [code](https://carteblanche.com/index.md?category=code) # changelog-checker what it does Reads a changelog entry and the change it describes, and lists anything the entry leaves out or gets wrong. tools it asks for Reads files by latentvoyager · version 1 · license MIT Verified · Listed by its author · Before and after: 2 models · 1 try per case · [View source](https://github.com/latentvoyager/cb-test-skill/blob/cacf5ebfab17abd4ba0260264397c17d92947eb8/.claude/agents/changelog-checker.md) · [Install from your agent](https://carteblanche.com/connect.md) · [Download .zip](https://carteblanche.com/skills/changelog-checker/download) ## Compare the answers Answers from Claude Sonnet 5.5 and GPT-6.1 Sol · try 1 of 1 Same request, same model, once with the agent’s instructions as its system prompt and once without. Neither could use a tool. Read both and judge for yourself. [Compare the answers](https://carteblanche.com/skills/changelog-checker/compare) ## The models 2 models Claude Sonnet 5.5 made by Anthropic claude-sonnet-5-5 · revision not reported by the provider 1 try per case · tested 6 Nov 2026 GPT-6.1 Sol made by OpenAI gpt-6.1-sol · revision not reported by the provider 1 try per case · tested 6 Nov 2026 ## The tasks written by Carte Blanche **example-1** “Can you check this changelog entry against the diff summary? Entry: "v2.4.0 - Added a \`--dry-run\` flag to the \`deploy\` command. Fixed a crash when the config file is empty." Diff summary: (1) added \`--dry-run\` to \`deploy\`, which prints planned actions without executing them; (2) \`--dry-run\` also implies \`--verbose\`; (3) empty config file now raises a clear ConfigError instead of crashing with a KeyError; (4) renamed the \`--env\` flag to \`--environment\`, keeping \`--env\` as a deprecated alias; (5) dropped support for Python 3.7.” **example-2** “Please review my changelog line against the code change. Changelog: "Improved performance of \`load\_users()\` by caching results." Here's the change: I added an \`lru\_cache(maxsize=128)\` decorator to \`load\_users(org\_id)\`, and the function now returns a tuple instead of a list so it can be cached safely. I also fixed a bug where users with a null \`email\` field were silently skipped. The cache is never invalidated, so results can be stale until restart. What's missing or inaccurate in my entry?” ## Install Download the .zip and unzip it. Put `changelog-checker.md` here: Claude Code · `~/.claude/agents/` · Every project. For one project only, use .claude/agents/ inside it. It gives the agent the tools it asks for, and no others. Cursor · `~/.cursor/agents/` · Cursor also reads the Claude Code folder above. It has no tools field, so it gives every agent every tool, whatever this one asks for. Codex · Codex’s custom agents are TOML files, not Markdown, so this agent doesn’t install there. Keep its license file beside it, as `changelog-checker.LICENSE`: a name that doesn’t end in .md, since every .md file there is read as an agent. Then start a new session and ask for it by name. Folders checked 6 November 2026. Or [install from your agent](https://carteblanche.com/connect.md): ask it to install `changelog-checker` from Carte Blanche. ## Badge for your README Carte Blanche: Verified Paste this into the agent’s README. It links to this page, and shows how the listing stands whenever it’s loaded. ``` [![Carte Blanche](https://carteblanche.com/badge/changelog-checker.svg)](https://carteblanche.com/skills/changelog-checker) ``` ## About this test - **tested**: 6 Nov 2026 - **version tested**: v1 - **cases**: 2 - **tries per case**: 1 try per case - **run without the agent**: yes - **cases written by**: Carte Blanche - **size**: 355 characters What this shows, and what it doesn’t How 2 models answered these 2 requests, with and without the agent. It says nothing about other models, and it doesn’t limit what your own agent can do. The answers were written without tools: the agent’s instructions were the system prompt, and it read no file and ran nothing. [How we test](https://carteblanche.com/how-it-works.md)