mcp-stack

Fourteen small MCP servers for everyday LLM / RAG / agent work. Each ships independently on npm, listed in the official MCP Registry, and is callable from Claude Desktop, Cursor, Cline, Windsurf, Zed, and any other MCP-compatible client.

RAG / agent helpers

Package	Tools	When to install
@mukundakatta/promptbudget-mcp	truncate_to_token_budget	LLM needs to fit text into a context window mid-task
@mukundakatta/citecite-mcp	inject_citations, parse_citations, strip_citations	Round-trip [1] [2] markers in RAG outputs
@mukundakatta/ragmetric-mcp	recall_at_k, hit_at_k, mrr, ndcg_at_k, evaluate_batch	LLM helps score retrieval quality
@mukundakatta/ragdrift-mcp	interpret_drift_score, recommend_thresholds, explain_drift_dimensions	LLM diagnoses RAG drift alerts

Reliable transforms LLMs reach for tools instead of imagining

Package	Tools	When to install
@mukundakatta/csv-tools-mcp	parse_csv, to_csv, pluck_columns	LLM needs RFC 4180-correct CSV (quoted fields, embedded commas, BOMs)
@mukundakatta/regex-test-mcp	test_regex, find_all, replace	LLM needs exact regex semantics with real match offsets and named groups
@mukundakatta/jmespath-mcp	json_query	LLM needs deep JSON traversal (filters, projections, pipes) without hallucinating
@mukundakatta/diff-mcp	unified_diff, apply_patch, parse_patch	Code-review or code-edit agent needs character-precise patches
@mukundakatta/sqlfmt-mcp	format_sql, list_dialects	Deterministic SQL formatting across 19 dialects
@mukundakatta/shellquote-mcp	quote_bash, quote_bash_argv, quote_cmd, quote_powershell	Safe shell argument escaping; LLMs constantly mishandle quotes/$VAR
@mukundakatta/json5-mcp	parse_json5, to_json5, to_strict_json	LLM emitted JSON-with-comments / trailing-commas; round-trip to strict JSON
@mukundakatta/toml-yaml-json-mcp	parse, format, convert	TOML / YAML / JSON conversion (LLMs especially mishandle TOML)
@mukundakatta/timezone-mcp	convert_tz, now_in, tz_offset	IANA timezone math with real DST rules; LLMs hallucinate offsets
@mukundakatta/html-to-markdown-mcp	html_to_md, extract_text	Web-scraping agents need clean Markdown / text from HTML

Sibling libraries

The first four wrap or re-implement logic from the user's Rust + Python work:

• ragdrift (crates.io) / ragdrift-py (PyPI) — five-dimensional drift detection
• embedrank, promptbudget, stopstream, citecite, ragmetric — pure-Rust crates from the rust-llm-stack workspace

The MCP servers are independent: they implement the logic they need in plain JavaScript so installing them doesn't pull a Rust toolchain.

Install (any of them)

Add to your MCP client config. Example for Claude Desktop:

{
  "mcpServers": {
    "promptbudget": { "command": "npx", "args": ["-y", "@mukundakatta/promptbudget-mcp"] },
    "citecite":     { "command": "npx", "args": ["-y", "@mukundakatta/citecite-mcp"] },
    "ragmetric":    { "command": "npx", "args": ["-y", "@mukundakatta/ragmetric-mcp"] },
    "ragdrift":     { "command": "npx", "args": ["-y", "@mukundakatta/ragdrift-mcp"] },
    "csv-tools":    { "command": "npx", "args": ["-y", "@mukundakatta/csv-tools-mcp"] },
    "regex-test":   { "command": "npx", "args": ["-y", "@mukundakatta/regex-test-mcp"] },
    "jmespath":     { "command": "npx", "args": ["-y", "@mukundakatta/jmespath-mcp"] },
    "diff":           { "command": "npx", "args": ["-y", "@mukundakatta/diff-mcp"] },
    "sqlfmt":         { "command": "npx", "args": ["-y", "@mukundakatta/sqlfmt-mcp"] },
    "shellquote":     { "command": "npx", "args": ["-y", "@mukundakatta/shellquote-mcp"] },
    "json5":          { "command": "npx", "args": ["-y", "@mukundakatta/json5-mcp"] },
    "toml-yaml-json": { "command": "npx", "args": ["-y", "@mukundakatta/toml-yaml-json-mcp"] },
    "timezone":       { "command": "npx", "args": ["-y", "@mukundakatta/timezone-mcp"] },
    "html-to-md":     { "command": "npx", "args": ["-y", "@mukundakatta/html-to-markdown-mcp"] }
  }
}

Develop

git clone https://github.com/MukundaKatta/mcp-stack
cd mcp-stack
npm install
npm test --workspaces

License

MIT OR Apache-2.0.