Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add Pixel-Process-UG/superkit-agents --skill mcp-buildergit clone --depth 1 https://github.com/Pixel-Process-UG/superkit-agentsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/pixel-process-ug/superkit-agents/mcp-builder)<a href="https://agentmods.dev/skills/pixel-process-ug/superkit-agents/mcp-builder"><img src="https://agentmods.dev/badge/skills/pixel-process-ug/superkit-agents/mcp-builder/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/pixel-process-ug/superkit-agents/mcp-builder"><img src="https://agentmods.dev/badge/skills/pixel-process-ug/superkit-agents/mcp-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00064 | $0.02848 |
| Opus 5.5 | $0.00026 | $0.01139 |
| Sonnet 5.5 | $0.00013 | $0.00570 |
| Haiku 4.5 | $0.00006 | $0.00285 |
Grade A, and why
mcp-builder scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 404 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MCP Builder
Overview
Build production-quality MCP (Model Context Protocol) servers that expose tools, resources, and prompts to AI clients. This skill covers the full development lifecycle: tool definition, resource management, prompt templates, transport configuration (stdio, SSE), error handling, security hardening, testing, and client integration.
Phase 1: Design
- Identify capabilities to expose (tools, resources, prompts)
- Define tool schemas with Zod/JSON Schema
- Plan resource URI patterns
- Design error handling strategy
- Choose transport layer (stdio for CLI, SSE for web)
STOP — Present the capability inventory and transport choice to user for approval.
Capability Selection Decision Table
| What You Have | MCP Primitive | Example |
|---|---|---|
| Actions that modify state | Tool | create-issue, send-email, deploy-app |
| Actions that read/query | Tool | search-documents, get-status |
| Data the AI should read | Resource | config://settings, docs://api/endpoints |
| Reusable prompt patterns | Prompt | code-review, summarize-document |
| Real-time data feeds | Resource (subscribable) | metrics://cpu/current |
Transport Selection Decision Table
| Context | Transport | Why |
|---|---|---|
| CLI tool, local client (Claude Desktop) | Stdio | Simple, no network overhead |
| Web application, remote clients | SSE | Network-accessible, real-time |
| Both local and remote | Stdio + SSE | Support both use cases |
| High-throughput, bidirectional | WebSocket (custom) | Lower latency than SSE |
Phase 2: Implementation
- Set up MCP server project structure
- Implement tool handlers with input validation
- Implement resource providers
- Add prompt templates
- Configure transport and authentication
STOP — Run basic smoke tests before moving to hardening.
Project Structure
src/
index.ts # Server entry point
tools/
search.ts # Tool implementations
create.ts
resources/
documents.ts # Resource providers
config.ts
prompts/
review.ts # Prompt templates
lib/
database.ts # Shared utilities
validation.ts
tests/
tools.test.ts
resources.test.ts
package.json
tsconfig.json
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 404 lines · 64 tokens per session scan A b6b24db82c1f
mcp-builder is a skill published in the GitHub repository Pixel-Process-UG/superkit-agents (3 stars, last pushed 7mo ago), licensed MIT. It adds 64 tokens to every session and 2,848 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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