Side-by-Side Model Context Protocol Comparison
Crystallography vs Oqmd
In-depth architectural comparison of the Crystallography and Oqmd 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
Crystallography
Databases · Remote HTTP/SSE
Quality: 48/100 (Fair) | Auth: No auth required
Oqmd
Databases · Remote HTTP/SSE
Quality: 48/100 (Fair) | Auth: No auth required
Verdict Summary: Choose Crystallography if you need specialized Databases tools running via a hosted cloud SSE transport. Choose Oqmd if your workspace requires Databases integration with remote web transport. Both servers can be configured concurrently in your client's
mcpServers manifest.Which MCP Server Should You Choose?
C
Choose Crystallography when:
- You need dedicated capabilities in the Databases domain.
- You prefer remote streaming HTTP/SSE transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
- Primary tools included: search_structures, get_structure, get_cif.
O
Choose Oqmd when:
- You need dedicated capabilities in the Databases domain.
- You prefer remote streaming HTTP/SSE transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
- Primary tools included: search_materials, get_material, stable_phases.
Feature & Specification Comparison
Tools & Capabilities Breakdown
Crystallography Tools (3)
search_structures
Search the Crystallography Open Database (COD), an open repository of crystal structures (inorganic, organic, metal-organic, and mineral). Search by compound name (free text), chemical formula, or mineral name; returns matching crystal structures with unit-cell parameters, space group, year, and a…
get_structure
Look up a single crystal structure in the Crystallography Open Database (COD) by its numeric COD ID (e.g. "1009000"). Returns the compound/mineral name, chemical formula, space group, full unit-cell parameters (a, b, c, alpha, beta, gamma, volume), bibliographic details (title, authors, journal, ye…
get_cif
Fetch the full CIF (Crystallographic Information File) for a COD structure by its numeric COD ID — the actual machine-readable structure: symmetry operations and the atom sites (element, fractional x/y/z coordinates, occupancy). Use after search_structures/get_structure when you need the real atomi…
Oqmd Tools (3)
search_materials
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).
Crystallography Configuration
Oqmd Configuration