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aact

aact is an MCP server for Claude Code from navisbio/AACT_clinicaltrials_MCP. Its token cost is not measured, scanned A, original, MIT.

A database connection for AACT, a public database built from ClinicalTrials.gov clinical-trial records. It provides tools for discovering tables and columns, checking the connection, and querying trial data with SQL.

In plain words
What is it for?
Use it to inspect the database schema, find relevant fields and allowed values, search trials, and fetch paginated rows using the shared trial identifier.
Why use it?
It gives an agent a structured way to find and filter clinical-trial records instead of relying on manual searches or unstructured web pages.

MCP server for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: listed in a Claude config.

Runs only inside a plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else, and the catalogue could not identify which plugin ships it.

not rated 19repo 6mo ago A scan tokens not measured original MIT

Good fit Use it to inspect the database schema, find relevant fields and allowed values, search trials, and fetch paginated rows using the shared trial identifier.

Compare 6 mcp servers from other repositories ↓
View source ↗ navisbio/AACT_clinicaltrials_MCP
Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for aact

README.md
[![agentmods](https://agentmods.dev/badge/mcp/navisbio/aact_clinicaltrials_mcp/aact/github.svg)](https://agentmods.dev/mcp/navisbio/aact_clinicaltrials_mcp/aact)
Your own site
<a href="https://agentmods.dev/mcp/navisbio/aact_clinicaltrials_mcp/aact"><img src="https://agentmods.dev/badge/mcp/navisbio/aact_clinicaltrials_mcp/aact/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for aact

Your own site · 80×15
<a href="https://agentmods.dev/mcp/navisbio/aact_clinicaltrials_mcp/aact"><img src="https://agentmods.dev/badge/mcp/navisbio/aact_clinicaltrials_mcp/aact.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

aact scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 16 lines

What it actually says

{
  "aact": {
    "command": "uv",
    "args": [
      "run",
      "--directory",
      "${CLAUDE_PLUGIN_ROOT}",
      "mcp-server-aact"
    ],
    "env": {
      "DB_USER": "${DB_USER}",
      "DB_PASSWORD": "${DB_PASSWORD}"
    },
    "instructions": "Use this server for any clinical trial or ClinicalTrials.gov question. Tools: database_info (connection check), list_tables (discover tables), describe_table (column details), get_column_values (enum values for filters), search_columns (find columns by keyword), read_query (run SQL), fetch_rows (paginate results). All tables join on nct_id."
  }
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 16 lines scan A f5487eefc483

Subscribe to this mod's changes

aact is an MCP server published in the GitHub repository navisbio/AACT_clinicaltrials_MCP (19 stars, last pushed 6mo ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

DatabasesScientific
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