Dictionary vs Openaq — MCP Server Comparison | AllMCPs
Side-by-Side Model Context Protocol Comparison
Dictionary vs Openaq
In-depth architectural comparison of the Dictionary and Openaq MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Dictionary
Developer Tools · Remote HTTP/SSE
Quality: 35/100 (Fair) | Auth: No auth required
Openaq
Developer Tools · Remote HTTP/SSE
Quality: 49/100 (Fair) | Auth: No auth required
Verdict Summary: Choose Dictionary if you need specialized Developer Tools tools running via a hosted cloud SSE transport. Choose Openaq if your workspace requires Developer Tools integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Dictionary when:
You need dedicated capabilities in the Developer Tools domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
No explicit tool names declared in metadata yet. Check project README on main listing page.
Openaq Tools (4)
air_quality_near
Get the latest air-quality readings (PM2.5, PM10, O3, NO2, SO2, CO, etc.) at the monitoring station NEAREST to a latitude/longitude. PREFER for "air quality near me", "what is the air quality at <coordinates>", "is the air bad in <place> right now". Returns the nearest station with its most recent…
find_stations
Find OpenAQ air-quality monitoring stations by location: a city or place name, coordinates+radius (nearest first), a country (ISO 3166-1 alpha-2 code), or a bounding box. Returns station id, name, country, coordinates, and the pollutants each measures (with sensor ids), plus resolved_place echoing…
get_latest
Get the latest reading for every pollutant at a specific OpenAQ station (by location id from find_stations). Returns each parameter (PM2.5, O3, NO2, etc.) with its value, units, and measurement time.
get_measurements
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Dictionary is categorized under Developer Tools and uses a remote streaming HTTP/SSE transport. In contrast, Openaq belongs to Developer Tools using remote streaming HTTP/SSE transport. Select Dictionary when you need capabilities focused on developer tools and Openaq when you require tools for developer tools.
Get the most recent time series (hourly or daily aggregates) for a single OpenAQ sensor (sensor id from find_stations), newest first. Use for pollutant trends over time at one station/parameter. Returns the sensor's LAST `limit` readings — note that many OpenAQ sensors are archived and stopped repo…