Nullary is an MCP server providing structured, citable access to negative results in drug discovery. Every record carries full provenance (DOI, PMID, source URL, license). Covers 7 modalities: small molecules (84.5M records), CRISPR (37.6M), clinical trials (104K terminated), peptides, antibodies, PROTACs, and oligonucleotides. Sources include ChEMBL, PubChem BioAssay, DepMap, BioGRID ORCS, GenomeCRISPR, ClinicalTrials.gov, EudraCT, Drugs@FDA, Thera-SAbDab, SAbDab, FLAb, PROTAC-DB, THPdb, AOBase, Retraction Watch, and 10 others. Fully cited.
Listed on
First seen 2 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
1
Directories
Collected by InvokeRank
-
Tools
No tool list captured yet
-
ToolBench grade
Not graded by Arcade
-
GitHub stars
No repository data
Tools
No tool list captured yet.
| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Smithery | Predictive intelligence for drug discovery | - | 2 Oct 2026 |