// OS-007 · MODEL CONTEXT PROTOCOL · REF: SYS-MCP26

Ship your MCP server today.

Production Model Context Protocol toolkit for Claude Desktop, Cursor, and autonomous local developer agents. Build, test, and deploy production-grade tool servers in under an afternoon.

$79 // USD FIXED

// ONE-TIME PERPETUAL LICENSE · SPEC 2026.04 READY

BUILD MINE ↗

$ npx mcpkit init

INSTANT DISPATCH ZERO DRM FULL CODE PYTHON & TYPESCRIPT

// TELEMETRY SPEC DEV.MCP.V4 [SECURE_DISPATCH] STDIO::OK

RUNTIME: PYTHON 3.11+ / NODE 20+ (TS)

PROTOCOL: MODEL CONTEXT PROTOCOL (STDIO + SSE)

CLIENTS: CLAUDE DESKTOP, CURSOR, WINDSURF

DISPATCH: INSTANT GUMROAD DIGITAL UNPACK

CHECKSUM: 0x94_MCPKIT_STANDARDS_VERIFIED

// AUTOMATED SUITE VERIFICATION 16/16 PASSED

> test_stdio_jsonrpc_handshake [PASS 1.2ms]

> test_ssrf_domain_filter_boundary [PASS 0.8ms]

> test_sqlite_ast_mutation_block [PASS 2.1ms]

> test_zod_schema_serialization [PASS 0.9ms]

TRANSPORT LATENCY: 1.2ms (ZERO STACK OVERHEAD)

■ ▲

// SYSTEM_DIRECTIVE: AUDIT FILTER [STRICT_PREREQUISITE] — Not for you if you have never written Python or TypeScript. This kit assumes you can run a script, manage virtualenvs or npm workspaces, and read a stack trace. Zero fluff, 100% load-bearing code.

// ARCHITECTURE MATRIX · DUAL IMPLEMENTATIONS

Two complete reference servers. Zero boilerplate.

Production-tested implementations mirroring identical tool protocols across Python and TypeScript. Standardized JSON-RPC protocol compliance out of the box.

// 01 PYTHON RUNTIME · FASTMCP v0.9+

python/server.py

fetch_url() NETWORK

SSRF-guarded HTTP scraper with domain allowlists & MIME-type boundaries preventing extraction of internal network endpoints.

sqlite_query() DATABASE

Read-only AST-validated SQL executor against local developer databases. Blocks mutating statements at the syntax parsing layer.

file_search() FILESYSTEM

High-speed ripgrep-style fuzzy path and semantic file crawler with strictly bounded root directory enforcement.

json_transform() DATA TRANSFORM

Safe jq-compatible schema query and dictionary mutation engine designed for zero memory runaway executions.

datetime_tools() UTILITY

Deterministic ISO-8601 timeline calculation & timezone conversions preventing typical agent temporal hallucination.

text_stats() METRICS

Precise token counter, character entropy distribution, and code block complexity calculation.

// INCLUDES: uv & poetry lockfiles SYS:VALIDATED

// 02 TYPESCRIPT RUNTIME · @MODELCONTEXTPROTOCOL/SDK

typescript/src/index.ts

fetch_url() NETWORK

Zod-validated URL sanitizer with safe fetch protocol abstraction, timeout wrappers, and memory-safe streaming buffers.

sqlite_query() DATABASE

Strict parameterized SQL query handler with read-only transaction locks and SQL parser verification.

file_search() FILESYSTEM

High-throughput async directory walker using native Node fs promises with strict directory traversal prevention.

json_transform() DATA TRANSFORM

Deterministic deep object lens extraction and functional schema shaping with explicit error propagation.

datetime_tools() UTILITY

Zod-coerced date arithmetic and UTC normalizer avoiding timezone offsets when responding to LLM prompts.

text_stats() METRICS

Wasm-assisted sub-millisecond tokenizer and byte-frequency distribution analyzer for raw payload inspection.

// INCLUDES: tsconfig strict · pnpm & npm SYS:VALIDATED

// TEST PROTOCOL

16 Functional Tests

Pytest & Vitest test runner suites covering edge cases, malformed JSON-RPC frames, error payload propagation, and timeout handling.

// DUAL RUNTIME TRANSPORT

Stdio & SSE Transports

Zero-config switching between local desktop subprocess pipes (Stdio) and remote HTTP Server-Sent Events (SSE) for distributed deployments.

// CLOUD SCAFFOLD

Deployment Blueprints

Production Dockerfiles, Cloudflare Workers SSE scaffold, Railway and Fly.io launch manifests for instant cloud dispatch.

// SPECIFICATION MANIFEST · ZERO DECORATIVE CODE

Engineered for load-bearing deployment.

STANDARDS: MCP-2026.04-COMPLIANT

SPEC-01 // FULL SOURCE CODE

100% unlocked Python and TypeScript source. Zero obfuscation, zero compiled blobs, and zero telemetry tracking back to AliceLabs.

STATUS: UNRESTRICTED

SPEC-02 // HARDENED SCHEMA

Every tool parameter enforced via Pydantic v2 and Zod schemas. Impossible for LLM hallucinations or type mismatches to crash your underlying process.

INTEGRITY: 100% TYPED

SPEC-03 // CLIENT CONFIG PRESETS

Drop-in JSON manifests for claude_desktop_config.json, Cursor MCP settings, and Windsurf agent configurations.

FORMAT: JSON-RPC 2.0

SPEC-04 // COMMERCIAL LICENSE

Perpetual commercial rights. Deploy in internal enterprise workflows, client deliverables, or proprietary SaaS architectures without seat fees.

RIGHTS: PERPETUAL

// FIELD MANUAL · FREQUENT INQUIRIES

Blunt Engineering Answers

Concise protocol specifications and operational directives for developers.

[01 // QUERY] Which MCP clients are supported?

Claude Desktop (macOS / Windows), Cursor IDE, Windsurf, LangChain / LlamaIndex MCP client connectors, and any standard JSON-RPC 2.0 stdio consumer. Both Unix socket pipes and Windows named pipes are tested and validated.

[02 // QUERY] Can I add my own custom tools?

Yes. Adding a new tool takes 6 lines of code using the included @mcp.tool() or server.tool() decorators. Docstrings and type hints are automatically extracted into standard Model Context Protocol schemas for Claude.

[03 // QUERY] Are protocol updates included?

Lifetime updates. Whenever Anthropic or the Model Context Protocol Working Group introduces protocol revisions or breaks schema specs, diff patches and tagged updates are dispatched directly to your Gumroad library account.

[04 // QUERY] What if my team needs immediate dispatch?

Instant zip unpack upon checkout. Includes verified README quickstarts, automated test configs, client presets, and bash/powershell run scripts so you can be operational in under five minutes.

// ZERO INDECISION RUNTIME · IMMEDIATE DISPATCH

From zero to shipped in a day.

Stop wrestling with raw JSON-RPC sockets and unmaintained boilerplates. Clone MCPKit, wire your custom logic, and let Claude talk to your local stack today.

GET MCPKIT - $79 ↗

lock 256-BIT ENCRYPTED GUMROAD DISPATCH