Mcp Server Design
Design FastMCP 3 tools, providers, transforms, authorization, background work, output contracts, and human approval boundaries for a production server.
Install
$ agentstack add skill-batteryshark-skill-tap-mcp-server-design ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-batteryshark-skill-tap-mcp-server-design) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Design a FastMCP Server
- Inventory users, component count, data sources, trust boundaries, latency, long-running work, and irreversible or external effects.
- Run
bin/mcp-server-design PATHto inventory existing FastMCP concerns and read [references/architecture-decisions.md](references/architecture-decisions.md). - Keep domain logic library-first. Use providers to source components, transforms to shape the exposed catalog, and middleware for request execution concerns.
- Prefer ordinary directly exposed tools for a small catalog. Use Tool Search for on-demand discovery, and experimental Code Mode only when server-side Python composition justifies its sandbox and extra dependency.
- Make output match consumers: typed structured data for programmatic composition, concise content for model reading, and Apps when an interactive UI materially helps. Do not impose a universal text-only rule.
- Put authorization and visibility on components, authenticate HTTP deployments, keep secrets server-side, and require preview/approval for irreversible, financial, external-communication, permission, or sensitive-data actions.
- Use task support for genuinely long-running work and explicit timeouts for bounded calls. Keep interactive OAuth and unreliable network work out of startup.
- Verify schemas, catalog exposure, permissions, output shape, task behavior, and side-effect gates.
Use [agents/architecture-reviewer.md](agents/architecture-reviewer.md) for a threat- and token-budget-aware review.
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: batteryshark
- Source: batteryshark/skill-tap
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.