Add project-scoped Railway MCP server config

[BigSimmo]

Summary

• Adds .mcp.json registering the Railway MCP server (npx -y @railway/cli mcp) at project scope, so Claude Code sessions load Railway tooling (deployments, logs, status, variables) automatically.
• The server requires Railway auth at runtime: either railway login on the machine or a RAILWAY_API_TOKEN account token provided as an environment secret. No credentials are included in this change.

Verification

• Verification not run: config-only change (a single new .mcp.json); no source, test, build, or app behavior is touched, so the local verification gates do not apply.
• Manually verified the registered command: railway mcp completes the MCP initialize handshake and, when authenticated, lists account projects.

Risk and rollout

• Risk: Low — additive config file; Claude Code prompts before enabling project-scoped MCP servers, and the server is inert without Railway credentials.
• Rollback: Delete .mcp.json.
• Provider or production effects: None from the file itself. When a session enables it with credentials, the server talks to the Railway API under the account used.

Clinical Governance Preflight

Not applicable — no ingestion, answer generation, search/ranking, source rendering, document access, privacy, production env, or clinical output is touched.

Notes

• The Railway use-railway agent skill was intentionally not vendored into .claude/skills/ in this PR; installing agent-behavior-steering files into the repo is left as an explicit follow-up decision.

🤖 Generated with Claude Code

https://claude.ai/code/session_016UrrzgrBtQRXvshDhvz3Hs

---

Generated by Claude Code

Summary by CodeRabbit

• New Features
  • Added/updated MCP server configuration for Railway CLI integration (using the mcp subcommand via npx).

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 3759c345-c044-49ee-ab33-117a1a9f8fa5

📥 Commits

Reviewing files that changed from the base of the PR and between 26cbdb7 and f214443.

📒 Files selected for processing (1)

• .mcp.json

🚧 Files skipped from review as they are similar to previous changes (1)

• .mcp.json

---

📝 Walkthrough

Walkthrough

Adds .mcp.json with a railway MCP server launched through npx -y @railway/cli@5.27.0 mcp.

Changes

Railway MCP server

Layer / File(s)	Summary
Railway server configuration .mcp.json	Registers the railway MCP server and configures its pinned Railway CLI package and mcp command.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: adding a project-scoped Railway MCP server config.
Description check	✅ Passed	The description follows the template with Summary, Verification, Risk and rollout, Clinical Governance Preflight, and Notes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch claude/install-claude-code-global-9ioe8n

---

_{Comment @coderabbitai help to get the list of available commands.}

[supabase]

This pull request has been ignored for the connected project sjrfecxgysukkwxsowpy because there are no changes detected in supabase directory. You can change this behaviour in Project Integrations Settings ↗︎.

---

Preview Branches by Supabase.
Learn more about Supabase Branching ↗︎.

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.mcp.json:
- Around line 4-5: Update the MCP configuration command to use the bundled
Railway CLI instead of invoking `npx -y `@railway/cli`` at runtime. Preserve the
existing MCP argument while selecting the locally available railway executable,
or pin `@railway/cli` to an approved version if the executable is not guaranteed
to be installed.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 09d9a0fd-42f1-415e-9ee2-bd3b92a48560

📥 Commits

Reviewing files that changed from the base of the PR and between db11387 and 26cbdb7.

📒 Files selected for processing (1)

• .mcp.json

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 26cbdb70cc

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".