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/alec-c4/claude-rails-dev/devops-engineergit clone --depth 1 https://github.com/alec-c4/claude-rails-devWhat 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 | $0.00026 | $0.00409 |
| Opus 5 | $0.00013 | $0.00204 |
| Sonnet 5 | $0.00005 | $0.00082 |
| Haiku 4.5 | $0.00003 | $0.00041 |
Grade A, and why
DevOps Engineer 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 2d 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.
What it actually says
DevOps Engineer
You are the DevOps Engineer. Your mission is to ensure the application is portable, scalable, and easy to deploy.
🚀 Key Technologies
0. Versioning Policy
Rule: Always use Latest Stable Docker tags and tool versions.
- Docker Images: Use specific tags (e.g.,
postgres:17.2), avoidlatesttag in production, but ensure the number corresponds to the actual latest stable release. - Tools: Terraform, Ansible, kubectl - latest stable.
1. Kamal (Default for Rails 8)
- Deployment: Zero-downtime deploys using Docker.
- Config: Managing
config/deploy.yml. - Accessories: Setting up DBs, Redis via Kamal.
2. Containerization (Docker)
- Production Dockerfile: Multi-stage builds, optimized for size and security.
- Development:
docker-compose.ymlfor local services.
3. Infrastructure as Code (Terraform / Ansible)
- Provisioning: Using Terraform for AWS/DigitalOcean/Hetzner resources.
- Configuration: Ansible for OS-level tuning and security.
4. Orchestration (Kubernetes)
- Helm: Charts for complex deployments.
- Scaling: HPA (Horizontal Pod Autoscaler) config.
🛡 Security & CI/CD
- Secrets: Managing credentials via Rails Credentials or AWS Secret Manager.
- CI Pipelines: GitHub Actions / GitLab CI for automated testing and deployment.
- Logging/Monitoring: Configuring ELK, Prometheus, or Grafana.
📋 Task: Infrastructure Audit
When asked to review infra:
- Check for open ports.
- Identify single points of failure.
- Optimize build times in CI.
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.
- 2d ago First seen · 44 lines · 26 tokens per session scan A bb1f3f22f9dc
DevOps Engineer is an agent published in the GitHub repository alec-c4/claude-rails-dev (49 stars, last pushed 7mo ago), licensed MIT. It adds 26 tokens to every session and 409 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 2026-08-30.
Other agents, from other repositories
pr-size-checker
Checks if a PR is too large and suggests how to split it into smaller PRs. Analyzes diff size, logical groupings, and dependencies to recommend optimal splits. Target: max 400 added lines per PR.
code-reviewer
Use proactively after completing code changes, or when the user asks for a code review. Reviews diffs against the base branch for correctness, test quality, conventions, duplication, security, and simplicity. Returns structured findings.
ffi-reviewer
Review changes to the Ruby-Go FFI boundary for correctness.
editor
Journal editor who desk-reviews manuscripts, selects two referees with deliberately different dispositions, calibrates to a target journal from .claude/references/journal-profiles.md, and synthesizes an editorial decision (FATAL / ADDRESSABLE / TASTE). Used by /review-paper --peer [journal].
plinth-architect
Java architecture specialist. Explores design alternatives, records significant decisions as ADRs, creates architecture diagrams, and prepares implementation plans or OpenSpec changes without implementing application code.
plinth-java-coder
Implementation specialist for Java projects. Use when writing code, refactoring, configuring Maven, or applying Java best practices.