📦 Safe Dependency Updater
An agent that reviews Dependabot PRs, tests them, and merges only the safe ones — so you stop drowning in 40 open update PRs.
The problem
Dependabot is great until you have 40 open update PRs nobody reviews. Security patches pile up. Bigger version bumps scare people who don't know if the breaking change matters. The result is a stale dependency tree — exactly what security teams warn against.
The outcome
Every Dependabot PR gets auto-reviewed: runs tests, checks the changelog, assesses risk. Patch updates with green tests and no breaking changes → auto-merge. Minor updates → bot comments 'looks safe, awaiting human sign-off'. Major updates → bot reads the migration guide and flags specific concerns.
Why IronClaw
Any agent that can merge to main needs strict sandboxing and audit logs. IronClaw's allowlisting controls exactly which repos, which branches, and which actions are permitted. The audit log proves what it did and when.
Alternatives worth considering
Setup steps
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Step 1: Define risk tiers
Patch (no breaking changes) / Minor (new features, deprecations) / Major (breaking). Auto-merge rules apply only to patch + all tests green + no security advisories in other direction. Everything else needs a human.
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Step 2: Wire up CI and IronClaw
When Dependabot opens a PR, IronClaw subscribes, waits for CI, reads the changelog diff, and posts an assessment. Never merges until CI is green and the model's risk score is 'low'.
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Step 3: Implement the changelog reader
The model fetches the dependency's changelog between current and target version. Summarizes breaking changes, deprecations, and notable features. This is where you get real value.
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Step 4: Add the weekly staleness report
Every Monday, post 'dependencies > 3 months behind' and 'security advisories unaddressed > 7 days'. Visibility changes behavior.
Example prompt
Review this Dependabot PR. Classify: patch/minor/major. Fetch the dependency's changelog between versions. Summarize breaking changes, deprecations, security-relevant changes. Output a risk score (low/medium/high) and a recommend action (auto-merge / human review / block).Pitfalls to avoid
- Auto-merging major versions. Never, even if tests pass. Major versions can have subtle runtime behavior changes that your test suite doesn't exercise.
- Trusting CI blindly. If test coverage is thin, green CI means little. The bot should not auto-merge if coverage of changed code paths is below your threshold.
- Bypassing security reviews. Packages with recent CVEs need a human look even on patch updates. Make the CVE check a hard stop.
Cost breakdown (monthly)
| Item | Cost |
|---|---|
| IronClaw hosting | $0 |
| Model calls (changelog reading, risk scoring) | $15–50 |
| CI compute (runs on every Dependabot PR) | $0–10 |
Total: $15–60/month. Costs assume typical usage; heavy use can run higher.
Related guides
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