Best Read-Only MCPs
Read-only MCPs can inspect, query, and fetch — but they never write, post, or trigger side effects. That makes them the safest option for exploratory agent workflows, production databases, and anywhere a misfire would cost money or corrupt state.
read-onlyTop Read-Only MCPs ranked
Popularity-ordered. Click any card for install snippets, fact sheet, and trust signals.
Query and inspect PostgreSQL databases via natural language.
Triage errors, inspect traces, and query events from Sentry.
Geocoding, place search, directions, and travel times from Google Maps.
Inspect Figma designs, components, and variables from an agent.
Up-to-date library docs pulled directly into your AI context.
Search, inspect, and run Hugging Face models and datasets from an agent.
Real-time and forecast weather data via the OpenWeatherMap API.
FAQ: Read-Only
Why use a read-only MCP specifically?
Agents will sometimes call tools you didn't expect. For a production database or a paid API, you want the server itself to refuse mutations — not just your prompt asking it nicely. Read-only is a hard stop, not a soft hint.
Can I make any MCP read-only?
Partially. Many MCPs gate writes behind environment variables or credentials scopes. If the MCP exposes write tools but you hand it read-only credentials, the write calls will fail at the API layer — same outcome in practice.