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 its niche at the intersection of MCP servers and Cloudflare Workers. It lists specific concrete actions, provides comprehensive trigger terms in a well-structured 'Use when' clause, and occupies a distinct enough domain to avoid conflicts. The note about biasing towards Cloudflare docs retrieval is a useful behavioral hint.
| 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 intersection of MCP + Cloudflare + OAuth makes it very unlikely to conflict with other skills. Clear domain boundaries are established. | 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 workflow that lacks explicit validation checkpoints between critical steps like deployment and client connection. The retrieval-first approach and reference file organization are notable strengths.
Suggestions
Add explicit validation checkpoints in the workflow, e.g., after deploy verify with `curl https://[worker].workers.dev/mcp` before connecting clients, and after testing locally confirm expected tool output before proceeding.
Remove the 'When to Use' section since it duplicates the skill description/triggers already in frontmatter, and trim the 'Prerequisites' to just the non-obvious items.
| 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 obvious requirements, 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 configuration, Claude Desktop config JSON, and testing commands. All examples are copy-paste ready with realistic patterns. | 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 between steps. After deployment there's no verification step (e.g., confirm the worker is live before connecting clients), and the testing step lacks success/failure criteria. | 2 / 3 |
Progressive Disclosure | Excellent structure with a clear overview and quick start, then progressively deeper content. OAuth details, advanced tool patterns, examples, and troubleshooting are appropriately delegated to one-level-deep reference files with clear signaling and descriptive labels. | 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
5ec03da
- Reviewed
Table of Contents
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