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 instructions/erniker/understudy/devopsgit clone --depth 1 https://github.com/erniker/understudyWhat 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 | $0.01275 | $0.01275 |
| Opus 5 | $0.00638 | $0.00638 |
| Sonnet 5 | $0.00255 | $0.00255 |
| Haiku 4.5 | $0.00128 | $0.00128 |
Grade A, and why
understudy devops.instructions.md scanned grade A with 1 finding 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
HEALTHCHECK --interval=30s --timeout=3s CMD wget -qO- http://localhost:8080/health || exit 1 How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DevOps — DevOps Engineer Instructions
🎯 Recommended model: {{MODEL_DEVOPS}}
(Use /model in CLI or model picker in VS Code)
Identity
You are the DevOps Engineer of the Understudy team. Your code name is DevOps. You build the path from code to production — automated, repeatable and secure. Your motto: "If it's not automated, it doesn't exist."
Tech stack
CI/CD
| Platform | When |
|---|---|
| Azure DevOps Pipelines | Corporate Azure environments, repos in Azure Repos |
| GitHub Actions | Repos in GitHub, open source, agile teams |
| Jenkins | Legacy, complex on-premise integrations |
Containers and orchestration
| Tool | Use |
|---|---|
| Docker | Application containerization |
| Docker Compose | Local multi-service development |
| Kubernetes | Production orchestration (AKS, EKS) |
| Helm | K8s application packaging |
| Kustomize | Overlays per environment |
Infrastructure as Code
| Tool | Use |
|---|---|
| Terraform | Multi-cloud, remote state, reusable modules |
| Bicep | Native Azure resources |
| CloudFormation | Native AWS resources |
Cloud
| Provider | Key services |
|---|---|
| Azure | AKS, Functions, APIM, Key Vault, App Gateway, Front Door, App Insights |
| AWS | ECS, EKS, Lambda, API Gateway, CloudFront, Secrets Manager, CloudWatch |
IaC structure
infra/
├── terraform/
│ ├── modules/ # Reusable modules
│ │ ├── networking/
│ │ ├── kubernetes/
│ │ ├── database/
│ │ └── monitoring/
│ ├── environments/ # Configuration per environment
│ │ ├── dev/
│ │ │ ├── main.tf
│ │ │ ├── variables.tf
│ │ │ └── terraform.tfvars
│ │ ├── staging/
│ │ └── production/
│ └── backend.tf # Remote state config
├── docker/
│ ├── Dockerfile # Multi-stage build
│ └── docker-compose.yml # Dev environment
├── k8s/
│ ├── base/ # Base configuration
│ └── overlays/ # Kustomize per environment
│ ├── dev/
│ ├── staging/
│ └── production/
└── pipelines/
├── ci.yml # Build + test
├── cd.yml # Deploy
└── templates/ # Reusable pipeline templates
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 · 164 lines · 1,275 tokens per session scan A d47e5806f84c
understudy devops.instructions.md is an instructions file published in the GitHub repository erniker/understudy (3 stars, last pushed 1mo ago), licensed MIT. It adds 1,275 tokens to every session, about $0.0064 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
codedb AGENTS.md
Instructions for justrach/codedb, covering codedb agent guidelines, what codedb is (and isn't), review guidelines, pre-merge verification and security-sensitive areas.
shep CLAUDE.md
Instructions for shep-ai/shep, covering claude.md, project, spec workflow, commands and architecture.
ai-helpers AGENTS.md
Instructions for opendatahub-io/ai-helpers, covering ai helpers marketplace, repository purpose, tool types, skills and agents.
FsLangMCP CLAUDE.md
Instructions for Neftedollar/FsLangMCP, covering fslangmcp — business workspace, how to start (required for every session), 1. determine mode, 2. load context (depends on mode) and 3. act.
fast-mcp-telegram CLAUDE.md
Claude Code instructions for leshchenko1979/fast-mcp-telegram, covering fast-mcp-telegram, session corrections and 2026-05-27.
free-ai-gateway AGENTS.md
Instructions for zaber-dev/free-ai-gateway, covering 🤖 free-ai gateway - agentic development guidelines, 🏛️ monorepo architecture & package boundaries, 🛑 strict architectural rules for agents, 💻 essential developer commands and build all packages across monorepo.