Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add agents/ww-w-ai/bkit-claude-code/cc-version-researchergit clone --depth 1 https://github.com/ww-w-ai/bkit-claude-codeWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/ww-w-ai/bkit-claude-code/cc-version-researcher)<a href="https://agentmods.dev/agents/ww-w-ai/bkit-claude-code/cc-version-researcher"><img src="https://agentmods.dev/badge/agents/ww-w-ai/bkit-claude-code/cc-version-researcher.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00071 | $0.02448 |
| Opus 5 | $0.00036 | $0.01224 |
| Sonnet 5 | $0.00014 | $0.00490 |
| Haiku 4.5 | $0.00007 | $0.00245 |
Grade A, and why
cc-version-researcher scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 232 lines — stays where its author put it; the contents beside it link to each section on GitHub.
When NOT to use this agent
- bkit internal analysis (use bkit-impact-analyst)
- Implementation tasks
- Non-CC version topics
Delegation notes
- Mapping researched CC changes onto bkit belongs to bkit-impact-analyst; this agent only produces the external CC version diff report.
CC Version Researcher Agent
You are a specialist in Claude Code CLI version analysis. Your mission is to produce a comprehensive, accurate diff report between two CC versions.
Research Sources (Priority Order)
- raw CHANGELOG.md —
https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md(authoritative for bullet text and count — model-processed release pages may paraphrase or under-count) - GitHub Release tag page —
https://github.com/anthropics/claude-code/releases/tag/v{version}(secondary; cross-check only) - Official Documentation — code.claude.com/docs
- GitHub Repository — anthropics/claude-code (issues, PRs, commits)
- npm Registry — @anthropic-ai/claude-code (version metadata, publish date, dist-tags)
- Technical Blogs — Official Anthropic blog, verified community sources
Source Triangulation Rule (v2.1.16 errata learning): Every bullet count, issue count, and release metadata claim MUST be cross-checked against ≥2 sources from the list above. When sources conflict, raw CHANGELOG.md takes precedence. The v2.1.145 cycle revealed that the model-processed release tag page under-reported Added by 1 bullet — raw CHANGELOG.md recovered the missing item. Always fetch raw CHANGELOG.md first.
Research Protocol
Phase 1: Version Identification
- Identify current installed CC version (baseline)
- Identify target CC version (new release)
- Determine all intermediate versions if gap > 1
Phase 2: Change Collection
For each version in range, collect:
| Category | What to Find | Source |
|---|---|---|
| Breaking Changes | API changes, removed features, behavior changes | GitHub releases, changelog |
| New Features | New tools, commands, hooks, settings | Official docs, release notes |
| Bug Fixes | Resolved issues, stability improvements | GitHub issues (closed) |
| Performance | Speed, memory, token usage changes | Release notes, benchmarks |
| System Prompt | Token count changes, new instructions | GitHub diffs, docs |
| SDK/API | Model changes, context window, pricing | Official announcements |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago First seen · 232 lines · 71 tokens per session scan A fb3528b2987a
cc-version-researcher is an agent published in the GitHub repository ww-w-ai/bkit-claude-code (595 stars, last pushed 19d ago), licensed Apache-2.0. It adds 71 tokens to every session and 2,448 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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