Side-by-Side Model Context Protocol Comparison
Afgong Sqlite MCP Server vs Oqmd
In-depth architectural comparison of the Afgong Sqlite MCP Server 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
Afgong Sqlite MCP Server
Databases · Local stdio
Quality: 32/100 (Emerging) | Auth: No auth required
Oqmd
Databases · Local stdio
Quality: 43/100 (Fair) | Auth: No auth required
Verdict Summary: Choose Afgong Sqlite MCP Server if you need specialized Databases tools running via a local process. Choose Oqmd if your workspace requires Databases integration with local subprocess execution. Both servers can be configured concurrently in your client's
mcpServers manifest.Which MCP Server Should You Choose?
Choose Afgong Sqlite MCP Server when:
- You need dedicated capabilities in the Databases domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
O
Choose Oqmd when:
- You need dedicated capabilities in the Databases domain.
- You prefer local stdio subprocess 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
Afgong Sqlite MCP Server Tools (0)
No explicit tool names declared in metadata yet. Check project README on main listing page.
Oqmd Tools (3)
search_materials
Search the Open Quantum Materials Database for DFT-computed inorganic materials by composition and/or constituent elements, with optional band-gap and thermodynamic-stability filters. Returns formation energy (eV/atom), energy above the convex hull (stability), band gap, space group, and prototype.…
get_material
Fetch a single OQMD material by its entry_id (e.g. 16525 = the Pbcn polymorph of Fe2O3). Returns formation energy (eV/atom), stability above hull, band gap, space group, prototype, cell volume, atom/element counts, ICSD id, and generic composition. Keyless.
stable_phases
List the ground-state (on-hull) phases of a chemical system — the thermodynamically stable compounds in OQMD for a given set of elements. e.g. "Fe-O" returns FeO, Fe2O3, Fe3O4. Restricts to materials made ONLY of the given elements with stability <= ~0 (on the convex hull). Keyless.
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).
Afgong Sqlite MCP Server Configuration
Oqmd Configuration