building-mcp-server-on-cloudflare
Builds remote MCP (Model Context Protocol) servers on Cloudflare Workers with tools, OAuth authentication, and production deployment. Generates server code, configures auth providers, and deploys to Workers. Use when: user wants to "build MCP server", "create MCP tools", "remote MCP", "deploy MCP", add "OAuth to MCP", or mentions Model Context Protocol on Cloudflare. Also triggers on "MCP authentication" or "MCP deployment". Biases towards retrieval from Cloudflare docs over pre-trained knowledge.
91
86%
Does it follow best practices?
Impact
100%
1.96xAverage score across 3 eval scenarios
Advisory
Suggest reviewing before use
Quality
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a strong skill description that clearly defines a specific niche (MCP servers on Cloudflare Workers), lists concrete actions (generates code, configures auth, deploys), and provides comprehensive trigger terms in an explicit 'Use when' clause. The description is well-structured, uses third person voice correctly, and includes the helpful note about biasing towards Cloudflare docs. It serves as a near-ideal example of a skill description.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: builds remote MCP servers, generates server code, configures auth providers, deploys to Workers. Also specifies the platform (Cloudflare Workers) and features (tools, OAuth authentication, production deployment). | 3 / 3 |
Completeness | Clearly answers both 'what' (builds remote MCP servers on Cloudflare Workers with tools, OAuth, deployment; generates code, configures auth, deploys) and 'when' (explicit 'Use when' clause with multiple trigger phrases and scenarios). | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural trigger terms users would say: 'build MCP server', 'create MCP tools', 'remote MCP', 'deploy MCP', 'OAuth to MCP', 'Model Context Protocol', 'MCP authentication', 'MCP deployment', and 'Cloudflare'. These are realistic phrases a user would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive niche combining MCP servers specifically on Cloudflare Workers with OAuth authentication. The combination of 'MCP' + 'Cloudflare' + 'OAuth' creates a very clear, narrow domain that is unlikely to conflict with other skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
72%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-structured skill with strong actionability and good progressive disclosure. The main weaknesses are minor verbosity (duplicated trigger conditions, some unnecessary context) and a lack of explicit validation checkpoints in the deployment workflow. The code examples are excellent and production-ready.
Suggestions
Add a validation checkpoint after Step 4 (Deploy), e.g., 'Verify deployment: curl https://[worker-name].workers.dev/mcp and confirm 200 response' before proceeding to connect clients.
Remove the 'When to Use' section since it duplicates the skill's description/trigger conditions and wastes tokens.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | Generally efficient but includes some sections that could be tightened — the 'When to Use' section duplicates the frontmatter description, the 'Prerequisites' section states things Claude can infer, and some tool pattern examples are somewhat redundant. However, most content earns its place. | 2 / 3 |
Actionability | Provides fully executable code examples throughout — bash commands for scaffolding, complete TypeScript tool definitions, wrangler.toml configs, Claude Desktop JSON config, and MCP Inspector testing commands. All examples are copy-paste ready. | 3 / 3 |
Workflow Clarity | The 5-step core workflow is clearly sequenced (Define Tools → Configure Entry Point → Test Locally → Deploy → Connect Clients), but there are no explicit validation checkpoints or feedback loops. After deploying, there's no 'verify deployment works' step, and the testing step lacks expected output or success criteria. | 2 / 3 |
Progressive Disclosure | Excellent structure with a concise overview and quick start, then progressively deeper content. OAuth details, advanced examples, and troubleshooting are properly delegated to one-level-deep reference files (references/oauth-setup.md, references/examples.md, etc.) with clear signaling. | 3 / 3 |
Total | 10 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Repository
- cloudflare/skills
- Commit
22a32f5
- Reviewed
Table of Contents
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