Borrowing it
Nothing to install: this file belongs to cyanheads/clinicaltrialsgov-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/cyanheads/clinicaltrialsgov-mcp-server/main/AGENTS.mdgit clone --depth 1 https://github.com/cyanheads/clinicaltrialsgov-mcp-serverWrote 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.
[](https://agentmods.dev/instructions/cyanheads/clinicaltrialsgov-mcp-server/agents-md)<a href="https://agentmods.dev/instructions/cyanheads/clinicaltrialsgov-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/cyanheads/clinicaltrialsgov-mcp-server/agents-md/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.
<a href="https://agentmods.dev/instructions/cyanheads/clinicaltrialsgov-mcp-server/agents-md"><img src="https://agentmods.dev/badge/instructions/cyanheads/clinicaltrialsgov-mcp-server/agents-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.05904 | $0.05904 |
| Opus 5 | $0.02952 | $0.02952 |
| Sonnet 5 | $0.01181 | $0.01181 |
| Haiku 4.5 | $0.00590 | $0.00590 |
Grade A, and why
clinicaltrialsgov-mcp-server AGENTS.md 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 6d 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.
This is a copy
73% identical to obsidian-mcp-server AGENTS.md — 511 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 471 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agent Protocol
Server: clinicaltrialsgov-mcp-server
Version: 2.9.3
Framework: @cyanheads/mcp-ts-core ^0.12.5
Engines: Bun ≥1.3.0, Node ≥24.0.0
Read the framework docs first:
node_modules/@cyanheads/mcp-ts-core/CLAUDE.mdcontains the full API reference — builders, Context, error codes, exports, patterns. This file covers server-specific conventions only.
Overview
MCP server wrapping the ClinicalTrials.gov REST API v2 — the US National Library of Medicine's registry of ~577K clinical trial studies. Public, read-only, no auth required.
Design doc: docs/design.md — full MCP surface design, tool schemas, service plan, implementation checklist.
API reference: docs/api-reference.md — complete ClinicalTrials.gov v2 endpoint reference.
MCP Surface
Tools (7)
| Name | Description |
|---|---|
clinicaltrials_search_studies |
Search studies with queries, filters, pagination, field selection. Primary tool. |
clinicaltrials_get_study_record |
Single study by NCT ID. Tool equivalent of the resource for resource-unaware clients. |
clinicaltrials_get_study_results |
Extract outcomes, adverse events, participant flow, baseline for completed studies. |
clinicaltrials_get_field_values |
Discover valid enum values for API fields with study counts. |
clinicaltrials_get_field_definitions |
Browse the study data model field tree — piece names, types, nesting. |
clinicaltrials_get_study_count |
Lightweight study count for a query (no data fetched). |
clinicaltrials_find_eligible |
Match patient demographics to recruiting trials. |
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.
- 6d ago Changed 7ea25289f857
- 10d ago First seen · 471 lines · 5,904 tokens per session scan A 611da193c7ee
clinicaltrialsgov-mcp-server AGENTS.md is an instructions file published in the GitHub repository cyanheads/clinicaltrialsgov-mcp-server (91 stars, last pushed 7d ago), licensed Apache-2.0. It adds 5,904 tokens to every session, about $0.0295 per session on Opus 5. A static security scan graded it A with 0 findings. It is 73% identical to obsidian-mcp-server AGENTS.md, differing in 511 lines, and is treated as a copy.
Other instructions, from other repositories
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.