mattergraph-connectors
Connectors to public materials databases for MatterGraph.
Each connector returns normalized Material records from mattergraph-core, so downstream filtering, graph export, and scoring work identically regardless of source.
Sources
| Connector | Status |
|---|---|
Materials Project (mp-api) |
Supported — requires MP_API_KEY |
JARVIS-DFT (jarvis-tools) |
Supported |
| NOMAD | Public metadata reads, no API key needed. Metadata-only in v0.1 — does not fetch archives or derived scalar properties. |
| LeMat-Bulk | Companion adapter (records, parquet, or Hugging Face datasets) |
| Local CSV | Supported |
| OQMD | Stub — preserves the API surface, returns no records |
Heavy source SDKs are imported lazily, so importing the package stays cheap and a missing optional dependency produces a readable install hint rather than an ImportError traceback.
Install
pip install mattergraph-connectors
Example
from mattergraph_connectors import LeMatBulk
dataset = LeMatBulk.example("spc-tialn-24")
candidates = (
dataset
.filter_elements(include=["Ti", "Al", "N"])
.filter_complexity(max_nsites=16, max_nelements=3)
.create_slice("spc_tialn_candidates_v1", target="energy_above_hull")
)
print(dataset.metadata["snapshot_manifest"])
print(candidates.report())
License
Apache-2.0
1 maintainer
Metadata
1 maintainer
Release files for mattergraph-connectors 0.1.1
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