New Your team’s decisions, in one playbook every coding agent works from. Never answer your agent twice

clinicaltrials.trials.search

Search 400K+ clinical trials registered on ClinicalTrials.gov by condition, drug/intervention, sponsor, or keyword. Optionally filter by status (RECRUITING, COMPLETED, etc.) and phase (PHASE1–PHASE4). Returns NCT ID, title, status, phases, conditions, sponsor, enrollment, and start/completion dat...

SERVERApibase SOURCEapibase-mcp-client
Low RISK CLASS
Category Read
Parameters 80 required
Recommended Allowedsee the rule below
Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-whiteknightonhorse-apibase/clinicaltrials.trials.search.md

What clinicaltrials.trials.search does on Apibase

AI agents call clinicaltrials.trials.search to retrieve information from Apibase without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

ParameterTypeRequiredDescription
limit integer — Maximum number of results to return (1–50). Default: 10.
phase string — Filter by clinical trial phase. PHASE1=safety, PHASE2=efficacy, PHASE3=confirmatory, PHASE4=post-market, NA=not applicable (e.g. observational studies).
status string — Filter by overall trial status. Most useful values: "RECRUITING" (open enrollment), "COMPLETED" (finished), "ACTIVE_NOT_RECRUITING" (ongoing but closed to new p
keyword string — Free-text keyword search across all text fields of the trial record (e.g. "immunotherapy", "biomarker", "phase 3 randomized").
sponsor string — Sponsor or organization name to search for (e.g. "Pfizer", "NIH", "Mayo Clinic"). Searches the lead sponsor field.
condition string — Disease or condition to search for (e.g. "diabetes", "breast cancer", "COVID-19"). Searches the conditions field of registered trials.
page_token string — Pagination token from a previous search response (next_page_token field). Omit for the first page.
intervention string — Drug or intervention to search for (e.g. "aspirin", "metformin", "CAR T-cell therapy"). Searches the interventions field of registered trials.

Parameters from the server's own tool schema.

Why clinicaltrials.trials.search is rated Low

Read-only search of public clinical trial registry data with no side effects.

From the tool's definition Search 400K+ clinical trials... Returns NCT ID, title, status

Questions about clinicaltrials.trials.search

What does the clinicaltrials.trials.search tool do? +

Search 400K+ clinical trials registered on ClinicalTrials.gov by condition, drug/intervention, sponsor, or keyword. Optionally filter by status (RECRUITING, COMPLETED, etc.) and phase (PHASE1–PHASE4). Returns NCT ID, title, status, phases, conditions, sponsor, enrollment, and start/completion dates. Supports pagination via page_token. Data from NIH US Gov (public domain). It is categorised as a Read tool in the Apibase MCP Server, which means it retrieves data without modifying state.

What parameters does clinicaltrials.trials.search accept? +

clinicaltrials.trials.search accepts 8 parameters: limit, phase, status, keyword, sponsor, condition, page_token, intervention. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on clinicaltrials.trials.search? +

Register the Apibase MCP server in PolicyLayer and add a rule for clinicaltrials.trials.search: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Apibase. Nothing to install.

What risk level is clinicaltrials.trials.search? +

clinicaltrials.trials.search is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit clinicaltrials.trials.search? +

Yes. Add a rate_limit block to the clinicaltrials.trials.search rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block clinicaltrials.trials.search completely? +

Set action: deny in the PolicyLayer policy for clinicaltrials.trials.search. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides clinicaltrials.trials.search? +

clinicaltrials.trials.search is provided by the Apibase MCP server (apibase-mcp-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

More on Apibase, and thousands of servers like it.

Across the catalogue

// THE MCP REGISTRY

PolicyLayer tracks 44,603 MCP servers and 515,000+ tools.

Every server has a live record: who publishes it, whether it answers without auth, its risk grade, every tool classified, the recommended policy. This page is one line of Apibase's. Pull the full record:

Teams ship this data inside their own products. See what a licence covers →

// GET IN TOUCH

Have a question or want to learn more? Send us a message.

Message sent.

We'll get back to you soon.