About nullary
Negative results intelligence for drug discovery — query measured failures via MCP.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://mcp.nullary.ai/mcpclaude mcp add --transport http ai-nullary-nullary https://mcp.nullary.ai/mcp{"mcpServers":{"ai-nullary-nullary":{"type":"http","url":"https://mcp.nullary.ai/mcp"}}}Open in Cursor{"servers":{"ai-nullary-nullary":{"type":"http","url":"https://mcp.nullary.ai/mcp"}}}Open in VS Code{"mcpServers":{"ai-nullary-nullary":{"type":"http","url":"https://mcp.nullary.ai/mcp"}}}{"mcpServers":{"ai-nullary-nullary":{"serverUrl":"https://mcp.nullary.ai/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
35| Parameter | Type | Required | Description |
|---|---|---|---|
| tier | enum | No | Confidence tier. 'curated' (default) returns the credible layer; 'all' also includes high-volume screening-grade rows (PubChem HTS inactives, CRISPR non-essential tails).curated | all |
| limit | integer | No | Maximum number of findings to return (1–100, default 25). |
| offset | integer | No | Number of findings to skip before this page, for pagination (default 0). |
| target | string | No | UniProt accession or gene symbol |
| outcome | string | No | outcome filter (inactive, failed_safety, terminated, …) |
| compound | string | No | compound name, ChEMBL ID, or InChIKey |
Details
The maintainer has not added details yet. Check the README in the repository.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.