Database facts you can trace and retrieve again.
Retrieves authoritative database records with reproducible queries, reconciled counts, and source provenance.
When to use it
Use when a database-backed fact needs reproducible retrieval from a named source rather than inference from general knowledge.
Give it an entity or identifier to look up; it returns database results with query provenance, count reconciliation, and limitations.
What you provide
An Addgene lookup requires approved API access and a license for each requested scope; an ordinary account is insufficient.
Materials Project access uses a free account to obtain its API key.
This skill
NCBI Gene
Looks up gene identifiers
PubChem
Looks up compound identifiers