Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/onsager-ai/dev-skillsnpx agentmods add skills/onsager-ai/dev-skills/railwayWrote 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/skills/onsager-ai/dev-skills/railway)<a href="https://agentmods.dev/skills/onsager-ai/dev-skills/railway"><img src="https://agentmods.dev/badge/skills/onsager-ai/dev-skills/railway/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/onsager-ai/dev-skills/railway"><img src="https://agentmods.dev/badge/skills/onsager-ai/dev-skills/railway.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00283 | $0.05689 |
| Opus 5.5 | $0.00113 | $0.02276 |
| Sonnet 5.5 | $0.00057 | $0.01138 |
| Haiku 4.5 | $0.00028 | $0.00569 |
Grade A, and why
railway 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 29d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
allowed-tools: Bash(railway:*), Bash(npm install -g @railway/cli:*), Bash(which railway), Bash(jq:*), Bash(sh *), Bash(bash *), Bash(curl *), Bash(agent-browser:*), Bash(npx agent-browser:*), Bash(just *), Read, Write, E How it starts
The opening of the file, as written. The whole thing — 401 lines — stays where its author put it; the contents beside it link to each section on GitHub.
railway
Use the smallest available Railway operation needed for the task. Read the repository's AGENTS.md and deployment policy before selecting a deployment route. A GitHub-driven pipeline takes precedence over the generic CLI examples below. This skill supplies tool mechanics, not authority to bypass that pipeline.
Deployment route and authorization
- For repository code changes, prepare the branch/PR and use the declared CI/CD trigger. On a GitHub-driven service, observe the matching commit deployment; do not upload a checkout, change source branches/pins or manually apply platform patches merely to trigger redeployment.
- A manual restart, redeploy or source/configuration change needs an operational reason within the user's authorized scope, such as recovery from a diagnosed failed rollout. Record the reason, exact environment/service and expected effect.
- Reuse existing authorization for that action and scope. Request a decision only for unresolved intent, destructive impact or additional scope. Read-only diagnosis, reversible code fixes and PR preparation do not require another confirmation.
- Testing evidence is reported separately from runtime capability and authorization. Do not require a new qualification report or checklist as permission to test.
When this skill triggers
Phrases that should route here:
- Deploy / build
- "deploy this to railway"
- "push to railway", "ship to railway", "railway up"
- "build is failing on railway", "why did my build fail"
- Logs / debugging
- "show me the railway logs", "tail the logs", "railway logs --since 1h"
- "why is my service crashing on railway"
- "show me the 500s on railway", "show http logs", "show slow requests"
- "find the request id abc123 in railway logs"
- Ops
- "redeploy on railway", "restart the api service", "roll back the last deploy"
- "scale my railway service", "remove the latest deployment"
- State / discovery
- "list my railway projects", "what services are in this project", "list deployments"
- "what's the status of my railway project", "is my service healthy"
- Variables
- "set a railway env var FOO=bar", "list railway variables", "delete a railway var"
- Run / connect
- "run this script with railway production env", "open a shell with railway env"
- "ssh into my railway service", "connect to my railway postgres / redis / mongo"
- Metrics
- "what's the cpu/memory on railway", "is my service hitting limits"
- "p95 latency on railway", "request rate on /api"
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 29d ago Changed · +20 lines 16d7512d4e9b
- 1mo ago Changed · +30 lines · -6 tokens per session 7bc634312d9b
- 1mo ago Changed · +4 lines 85e683a9b87b
- 2mo ago First seen · 347 lines · 289 tokens per session scan A 85ffb1592b3f
railway is a skill published in the GitHub repository onsager-ai/dev-skills (7 stars, last pushed yesterday), licensed MIT. It adds 283 tokens to every session and 5,689 once invoked, about $0.0011 per session on Opus 5.5. 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.
railway compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| railwayonsager-ai/dev-skills | Skill | 7 | yesterday | MIT | A | 283 | Claude Code |
| gke-compute-classesgoogle/skills | Skill | 23k | today | Apache-2.0 | A | 83 | Claude Code, Codex |
| gke-reliabilitygoogle/skills | Skill | 23k | today | Apache-2.0 | A | 85 | Claude Code, Codex |
| gke-workload-securitygoogle/skills | Skill | 23k | today | Apache-2.0 | A | 171 | Claude Code, Codex |
| cloud-architectJeffallan/claude-skills | Skill | 12k | 8d ago | MIT | A | 71 | Claude Code |
| nemo-automodel-launcher-configNVIDIA/skills | Skill | 3.9k | yesterday | Apache-2.0 | A | 30 | Claude Code |
| azure-mgmt-botservice-dotnetmicrosoft/skills | Skill | 3.2k | yesterday | MIT | A | 78 | Claude Code |