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An MCP server for Text2SQL: transforms natural language into SQL using graph schema understanding.

BigqueryNew

io.github.SnowLeopard-AI/bigquery-mcp

B✓Verified

A SnowLeopardAI-managed MCP server that provides access to Google BigQuery data.

FastMCP server for surgical queries against a vault knowledge graph (NetworkX noNew

io.github.adelaidasofia/graph-query-mcp

A✓Verified

FastMCP server for surgical queries against a vault knowledge graph (NetworkX node-link JSON).…

QueryshieldNew

io.github.bch1212/queryshield

A✓Verified

Secure SQL proxy for AI agents — NL→SQL, AST safety, per-agent RLS, audit log.

Retrieval that doesn't trust its first search: it grades the results, rewrites the query when they're weak, and only answers once the context is good.

A failed data job triggers three probes in parallel, then a fixer and verifier loop on a patch until it passes a dry run — and open a PR.

Runs your health queries on a schedule, compares against normal ranges, and posts to Slack with enough context to know if it actually matters.

Corrective RAG

io.github.langchain-ai/corrective-rag

LangGraph

Grades retrieved documents for relevance and, when they fail the grade, falls back to web search before answering.