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 skills/contentrain/ai/contentrain-diffnpx skills add Contentrain/ai --skill contentrain-diffgit clone --depth 1 https://github.com/Contentrain/aiWhat 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 | $0.00029 | $0.00385 |
| Opus 5 | $0.00015 | $0.00192 |
| Sonnet 5 | $0.00006 | $0.00077 |
| Haiku 4.5 | $0.00003 | $0.00038 |
Grade A, and why
contentrain-diff 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 yesterday.
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.
What it actually says
Skill: Review Pending Branches with contentrain diff
Inspect pending Contentrain branches and decide whether to merge, reject, or defer them.
When to Use
Use this when:
- the project has pending
contentrain/*branches - the user asks to review or merge changes
- branch pressure is growing and cleanup is needed
Steps
1. Check Branch Pressure
Start with contentrain status.
If many contentrain/* branches are active, move into review immediately.
2. Run contentrain diff
Use the CLI to:
- list pending branches
- inspect the diff summary
- review full patch output
3. Evaluate the Change
Check:
- which model/content files changed
- whether the change matches the intended operation
- whether validation/normalize work was completed properly
4. Choose an Outcome
- merge when the diff is correct and complete
- delete when the change is wrong or should be rejected
- defer only when more human input is required
5. Report the Decision
Summarize:
- branch reviewed
- action taken
- base branch affected
- any follow-up branch still pending
Browser Alternative
For visual branch review, use CLI serve:
contentrain serve
Navigate to http://localhost:3333/branches to see all pending branches with diffs, and merge or delete them visually.
Related Skills
- contentrain-serve — Browser-based branch review and merge
- contentrain — Core architecture and MCP tool catalog
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.
- yesterday First seen · 78 lines · 29 tokens per session scan A 2d1ec79f5719
contentrain-diff is a skill published in the GitHub repository Contentrain/ai (4 stars, last pushed 2d ago), licensed MIT. It adds 29 tokens to every session and 385 once invoked, about $0.0001 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 2026-08-31.
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