Every server below was scanned with the same deterministic engine that powers the MCP Trust Checker CLI and free API. The A–F Trust Score answers one question — how safe is this server for you to adopt: it starts from the threat score of its published code, then adjusts down for the capability blast radius, how strongly the publisher is verified, and how much of the package the scan could actually see. No pay-to-list, no self-reported ratings, and every point is itemised with its evidence.
Open Topo Data — global elevation lookups (multiple DEM datasets)
OpenTopography global DEM rasters + point queries (free key)
OQMD (Open Quantum Materials Database) MCP.
Visual interface for AI agents beyond text-only chat
Papers With Code MCP — browse ML research papers and their code repositories
Paraguay DNCP MCP — Paraguay government procurement / public contracts (keyless).
Secure password generator MCP.
Payflow MCP server
MCP server for converting PDFs to Markdown via PDFtoMarkdown.ai
API Ninjas MCP — wraps the multi-endpoint API Ninjas data API (api-ninjas.com)
CDC MCP — wraps CDC open data via Socrata API (data.cdc.gov)
EIA MCP — US Energy Information Administration API v2
Exa MCP — neural/semantic web search + content retrieval (exa.ai)
HTS MCP — US import tariff rates via the USITC Harmonized Tariff Schedule.
SGD (Saccharomyces Genome Database) MCP.
URL parsing & building MCP.
MCP server and CLI that generates functional Page Object Models from live Playwright accessibility snapshots
Poetry MCP — PoetryDB API (free, no auth)
Polygon.io stock/options/crypto: tickers, aggregates, news, splits, dividends.
MCP server for Postlark — AI-native blog publishing via Claude Code
MCP server per interrogare modelli semantici Power BI via service principal (OAuth client credentials)
Model Context Protocol (MCP) server for PrMaat — expose your agent passport, rooms, audit proofs, Verifiable Execution Receipts (v0.2), and Governance Trust ledger (v0.3.1) as tools in Claude Desktop, Claude Code, Cursor, or any MCP client. 9 tools. Legac
PyPIStats.org — PyPI download statistics
Quotable MCP — wraps Quotable API (free, no auth)