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"""
gene_hub – resolve_gene() tries three sources in order of speed & richness.
1. MyGene.info (v3) – 500 QPS key tier :contentReference[oaicite:3]{index=3}
2. Ensembl REST – key-less, species-agnostic :contentReference[oaicite:4]{index=4}
3. Open Targets GQL – tractability & constraint :contentReference[oaicite:5]{index=5}
"""
from mcp.mygene import fetch_gene_info
from mcp.ensembl import fetch_ensembl
from mcp.opentargets import fetch_ot
async def resolve_gene(symbol: str) -> dict:
"""Return first non-empty gene record; never raises."""
for fn in (fetch_gene_info, fetch_ensembl, fetch_ot):
try:
data = await fn(symbol)
if data:
return data
except Exception: # network hiccup / 429 etc.
pass
return {}
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