# negative-results-mcp

> Use this tool when you need to identify and analyze negative results in drug discovery, such as inactive compounds or failed clinical trials, to inform research decisions and avoid repeated failures. It provides a comprehensive database of negative results with full provenance, including source database, DOI/PMID, and license information. This tool is ideal for researchers and scientists looking to optimize their drug discovery pipelines and minimize unnecessary experimentation.

Canonical page: https://skillsregistry.net/skills/nullary-ai-nullary-mcp  
JSON: https://api.skillsregistry.net/v1/skills/nullary-ai-nullary-mcp

## Description

Negative results intelligence for drug discovery: inactive compounds, failed selectivity panels, terminated clinical trials, failed CRISPR screens, antibody developability failures, and more — each result carrying full provenance (source database, DOI/PMID, license)

## Trust

- **Trust score (0–1):** 0.60
- **Verification tier:** scanned
- **Last scanned:** 2026-09-03

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** database
- **Updated:** 2026-09-03

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/rortd7vl93)
- **Repository:** <https://github.com/nullary-ai/nullary-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "nullary-ai-nullary-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/nullary-ai-nullary-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/nullary-ai-nullary-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt