Update CLI banner with FastMCP 3.0 notice

[jlowin]

Updating CLI with 3.0 message.

[coderabbitai]

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📥 Commits

Reviewing files that changed from the base of the PR and between 23fce5d and 593d0e7.

📒 Files selected for processing (1)

• src/fastmcp/utilities/cli.py

Walkthrough

The changes simplify server banner logging by removing transport-specific parameters from the log_server_banner function and its call sites. The function signature is modified to accept only the server instance. Banner content generation is redesigned from a dynamic, transport-derived layout to a static configuration. A new v3 notice panel is introduced and rendered alongside the main banner panel. Call sites in run_stdio_async and run_http_async are updated to invoke the simplified function without transport, host, port, or path parameters.

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The pull request description is incomplete and minimal. It only contains 'Updating CLI with 3.0 message.' without addressing the required checklist items or providing substantive details about the changes.	Complete the description by filling out the Contributors Checklist and Review Checklist sections, and provide more detailed information about the changes made and testing performed.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Update CLI banner with FastMCP 3.0 notice' accurately and clearly describes the main change—updating the CLI banner to include a FastMCP 3.0 notice. It is specific, concise, and directly reflects the primary objective of the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

src/fastmcp/utilities/cli.py (1)

216-218: Remove commented-out code.

The commented-out docs row should be removed entirely rather than left as a comment. The docs URL is now displayed separately in the panel content (line 221).

🔎 Proposed fix

     info_table.add_row("🖥", "Server:", Text(server.name, style="dim"))
-    # info_table.add_row("📚", "Docs:", "https://gofastmcp.com")
     info_table.add_row("🚀", "Deploy free:", "https://fastmcp.cloud")

Based on coding guidelines: "Unused code (dead code, commented-out code, debug artifacts)" should be removed.

📜 Review details

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 9732789 and 23fce5d.

📒 Files selected for processing (2)

• src/fastmcp/server/server.py
• src/fastmcp/utilities/cli.py

🧰 Additional context used

📓 Path-based instructions (1)

src/fastmcp/**/*.py

📄 CodeRabbit inference engine (AGENTS.md)

src/fastmcp/**/*.py: Python ≥ 3.10 with full type annotations required
Prioritize readable, understandable code - clarity over cleverness. Avoid obfuscated or confusing patterns even if shorter
Follow existing patterns and maintain consistency in code implementation
Be intentional about re-exports - don't blindly re-export everything to parent namespaces. Core types defining a module's purpose should be exported. Specialized features can live in submodules. Only re-export to fastmcp.* for most fundamental types
Never use bare except - be specific with exception types

Files:

• src/fastmcp/server/server.py
• src/fastmcp/utilities/cli.py

🧠 Learnings (1)

📚 Learning: 2025-12-25T15:53:07.646Z

Learnt from: CR
Repo: jlowin/fastmcp PR: 0
File: AGENTS.md:0-0
Timestamp: 2025-12-25T15:53:07.646Z
Learning: Applies to tests/**/*.py : Pass FastMCP servers directly to clients for testing without network complexity; only use HTTP transport when explicitly testing network features

Applied to files:

• src/fastmcp/server/server.py

🧬 Code graph analysis (1)

src/fastmcp/server/server.py (1)

src/fastmcp/utilities/cli.py (1)

• log_server_banner (200-255)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (4)

• GitHub Check: Run tests: Python 3.10 on windows-latest
• GitHub Check: Run tests: Python 3.13 on ubuntu-latest
• GitHub Check: Run tests: Python 3.10 on ubuntu-latest
• GitHub Check: Run tests with lowest-direct dependencies

🔇 Additional comments (5)

src/fastmcp/server/server.py (2)

2498-2499: LGTM!

The banner call has been correctly simplified to match the new signature in cli.py. The transport information is no longer displayed in the banner, which aligns with the PR objective to show a static v3 notice instead of dynamic transport details.

---

2563-2564: LGTM!

The banner call has been correctly simplified to match the new signature. The transport, host, port, and path details are no longer passed to the banner function, which now displays a static layout with the v3 notice.

src/fastmcp/utilities/cli.py (3)

6-6: LGTM!

The function signature has been correctly simplified to accept only the server parameter, removing transport-specific details. The Literal import is also no longer needed and has been appropriately removed.

Also applies to: 200-201

---

221-243: LGTM!

The addition of the v3 notice panel is well-implemented and provides clear guidance to users about pinning their FastMCP version in production. The docs URL has been elegantly moved to a separate centered text element in the main panel, maintaining good visual hierarchy.

---

254-255: LGTM!

The centered rendering of both panels together will provide a clean, professional appearance in the CLI output. The Group wrapping ensures proper spacing with newlines before and after.