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alterlab-clinicaltrials

alterlab-clinicaltrials is a skill for Claude Code from AlterLab-IEU/AlterLab-Academic-Skills. It costs 76 tokens per session (3,963 once invoked), scanned A, original, MIT.

A programming interface to ClinicalTrials.gov, a public registry of clinical studies conducted around the world. It lets you search study records and retrieve details such as conditions, treatments, locations, status, and eligibility.

In plain words
What is it for?
Use it to find recruiting studies, investigate drugs or conditions, locate trials by place, review eligibility, and analyse or track clinical-trial records.
Why use it?
It removes the need to browse and filter the registry by hand. It makes trial records easier to search, compare, export, and monitor.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the alterlab-databases plugin — 38 skills shipped together

not rated 85repo +3 changed yesterday A scan SkillSpector: pass 76 tokens original MIT

Good fit Use it to find recruiting studies, investigate drugs or conditions, locate trials by place, review eligibility, and analyse or track clinical-trial records.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials
View source ↗ AlterLab-IEU/AlterLab-Academic-Skills alterlab-ieu.github.io
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add AlterLab-IEU/AlterLab-Academic-Skills --skill alterlab-clinicaltrials
Clone the repo
git clone --depth 1 https://github.com/AlterLab-IEU/AlterLab-Academic-Skills

Made for: Claude Code.

Or install alterlab-databases, the plugin that ships this one along with the rest of its 38 skills.

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 alterlab-clinicaltrials

README.md
[![agentmods](https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials/github.svg)](https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials)
Your own site
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials/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 alterlab-clinicaltrials

Your own site · 80×15
<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-academic-skills/alterlab-clinicaltrials.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 76 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,963 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00076 $0.03963
Opus 5.5 $0.00030 $0.01585
Sonnet 5.5 $0.00015 $0.00793
Haiku 4.5 $0.00008 $0.00396

Measured yesterday against content hash 6c755a066f11, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

alterlab-clinicaltrials scanned grade A with 1 finding 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 yesterday.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/query_clinicaltrials.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

allowed-tools: Read WebFetch Bash(curl:*) Bash(python:*) Bash(python3:*)
skills/databases/alterlab-clinicaltrials/SKILL.md · 501 lines

How it starts

The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.

ClinicalTrials.gov Database

Overview

ClinicalTrials.gov is a comprehensive registry of clinical studies conducted worldwide, maintained by the U.S. National Library of Medicine. Access API v2 to search for trials, retrieve detailed study information, filter by various criteria, and export data for analysis. The API is public (no authentication required) with rate limits of ~50 requests per minute, supporting JSON and CSV formats.

When to Use This Skill

This skill should be used when working with clinical trial data in scenarios such as:

  • Patient matching - Finding recruiting trials for specific conditions or patient populations
  • Research analysis - Analyzing clinical trial trends, outcomes, or study designs
  • Drug/intervention research - Identifying trials testing specific drugs or interventions
  • Geographic searches - Locating trials in specific locations or regions
  • Sponsor/organization tracking - Finding trials conducted by specific institutions
  • Data export - Extracting clinical trial data for further analysis or reporting
  • Trial monitoring - Tracking status updates or results for specific trials
  • Eligibility screening - Reviewing inclusion/exclusion criteria for trials

Does NOT Trigger

Scenario Use Instead
Published trial results, RCT papers, or meta-analysis literature alterlab-pubmed
FDA approvals, drug labels, adverse-event (FAERS) or recall data alterlab-fda
Drug mechanism of action, targets, or drug–drug interactions (pharmacology, not trials) alterlab-drugbank
Writing a CSR, SAE narrative, or other trial report document alterlab-clinical-reports
Evidence-graded treatment recommendations / decision algorithms alterlab-clinical-decision

Hand-off rule. When the request matches a row above, open your answer by naming that skill by its exact id (for example alterlab-pubmed) and saying in one line why it fits better, then stop applying this skill's procedure. Name it even when you also need to ask for missing input. If only part of the request is out of scope, name the skill for that part and do only the in-scope part. A brief general pointer is fine; the named skill does the work.

Read the full file on GitHub · 501 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. yesterday Changed · +3 lines 6c755a066f11
  2. 1mo ago Changed f497a28a8a4a
  3. 2mo ago First seen · 498 lines · 76 tokens per session scan A 9f498b48f232

Subscribe to this mod's changes

alterlab-clinicaltrials is a skill published in the GitHub repository AlterLab-IEU/AlterLab-Academic-Skills (85 stars, last pushed yesterday), licensed MIT. It adds 76 tokens to every session and 3,963 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

ResearchScientificacademic-researchanthropicbioinformaticsdata-scienceprompt-engineeringresearch-tools
Related

alterlab-clinicaltrials compared with skills from other repositories

alterlab-clinicaltrials next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
alterlab-clinicaltrialsAlterLab-IEU/AlterLab-Academic-SkillsSkill85yesterdayMITA76Claude Code
r-spss-syntax-architectNero1688/claude-academic-skillsSkill1315d agoMITA535Claude Code, Codex
management-figureNero1688/claude-academic-skillsSkill1315d agoMITA463Claude Code, Codex
ob-hrm-scale-adaptorNero1688/claude-academic-skillsSkill1315d agoMITA318Claude Code, Codex
reproducibility-architectNero1688/claude-academic-skillsSkill1315d agoMITA521Claude Code, Codex
thesis-consistency-auditNero1688/claude-academic-skillsSkill1315d agoMITA500Claude Code, Codex
journal-submission-scoutNero1688/claude-academic-skillsSkill1315d agoMITA479Claude Code, Codex