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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "clinicaltrialsgov-mcp-server": {
      "type": "http",
      "url": "https://clinicaltrials.caseyjhand.com/mcp"
    }
  }
}

claude mcp add --transport http clinicaltrialsgov-mcp-server https://clinicaltrials.caseyjhand.com/mcp

[mcp_servers.clinicaltrialsgov-mcp-server]
url = "https://clinicaltrials.caseyjhand.com/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "clinicaltrialsgov-mcp-server": {
      "type": "remote",
      "url": "https://clinicaltrials.caseyjhand.com/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "clinicaltrialsgov-mcp-server": {
      "type": "http",
      "url": "https://clinicaltrials.caseyjhand.com/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=clinicaltrialsgov-mcp-server&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY2xpbmljYWx0cmlhbHMuY2FzZXlqaGFuZC5jb20vbWNwIn0%3D"
}

{
  "servers": {
    "clinicaltrialsgov-mcp-server": {
      "type": "http",
      "url": "https://clinicaltrials.caseyjhand.com/mcp"
    }
  }
}

{
  "mcpServers": {
    "clinicaltrialsgov-mcp-server": {
      "httpUrl": "https://clinicaltrials.caseyjhand.com/mcp"
    }
  }
}

extensions:
  "clinicaltrialsgov-mcp-server":
    enabled: true
    name: "clinicaltrialsgov-mcp-server"
    type: streamable_http
    uri: "https://clinicaltrials.caseyjhand.com/mcp"
    timeout: 300

Quality 86 / 100good

protocol88 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
warn
protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene79 · weight 30

pass
tools.descriptionsevery tool has a description
warn
tools.description_length1 tools have descriptions over 1,024 characters, which crowds the context
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations7 of 7 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: clinicaltrials_get_study_record (destructiveHint); clinicaltrials_get_study_count (destructiveHint); clinicaltrials_get_field_values (destructiveHint); …
pass
tools.token_costabout 7,967 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes5 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know [email protected], [email protected]

7 tools, about 7,967 tokens to load them all · tool set dfb1ac2d7324 · tools last changed 2026-10-14 · checked 2026-10-19 13:05 UTC

Tool changes

2026-10-14clinicaltrials_find_eligiblechangeddescription, output schema
before
Match patient demographics and conditions to eligible recruiting clinical trials. Provide age, sex, conditions, and location to find studies with matching eligibility criteria, contact information, and recruiting locations. Results are re-ranked so studies whose own condition matches a requested condition surface above tangential matches from ClinicalTrials.gov's fuzzy condition search. Each candidate returns only the sites matching the requested location (capped by locationLimit), not the study's full registered site list — a large trial can register hundreds of sites worldwide. When none of a candidate's matched sites is recruiting, one recruiting site is added so an enrollable site is never hidden behind a closer closed one: the one nearest the matched sites by their published coordinates, in the requested country whenever a site there recruits, carrying distanceMi, or the first in match order when coordinates are missing. Fetch a study's complete record with clinicaltrials_get_study_record.
after · 83% of words in common
Find candidate clinical trials for a patient profile. Provide age, sex, conditions, and location to get studies with their demographic limits, contact information, and recruiting locations. Candidates are matched on age, sex, location, recruitment status, and ClinicalTrials.gov's fuzzy condition search only — inclusion/exclusion criteria are not checked, and a candidate can exclude the requested condition, so review each one's criteria with clinicaltrials_get_study_record before treating it as a match. Results are re-ranked so studies whose own condition matches a requested condition surface above tangential matches from ClinicalTrials.gov's fuzzy condition search. Each candidate returns only the sites matching the requested location (capped by locationLimit), not the study's full registered site list — a large trial can register hundreds of sites worldwide. When none of a candidate's matched sites is recruiting, one recruiting site is added so an enrollable site is never hidden behind a closer closed one: the one nearest the matched sites by their published coordinates, in the requested country whenever a site there recruits, carrying distanceMi, or the first in match order when coordinates are missing. Fetch a study's complete record with clinicaltrials_get_study_record.
2026-10-14clinicaltrials_get_study_resultschangeddescription, input schema, output schema
before
Fetch clinical trial results data from ClinicalTrials.gov for completed studies — outcome measures with statistics, adverse events, participant flow, baseline characteristics, and results metadata (limitations & caveats, certain-agreement disclosure restrictions, results point of contact). Only available for studies where hasResults is true. Use clinicaltrials_search_studies first to find studies with results. A results-rich record can exceed 500KB per study in full mode — bound it with summary=true, narrower sections, or the outcomeLimit / adverseEventLimit caps. A bounded list is resumable: outcomeOffset / seriousEventOffset / otherEventOffset start the next window, and each study's filtersApplied reports what was trimmed and the next offset for every list left short. A previous (alias) NCT ID resolves to its canonical study, named in canonicalNctId.
after · 96% of words in common
Fetch clinical trial results data from ClinicalTrials.gov for completed studies — outcome measures with statistics, adverse events, participant flow, baseline characteristics, and results metadata (limitations & caveats, certain-agreement disclosure restrictions, results point of contact). Only available for studies where hasResults is true. Use clinicaltrials_search_studies first to find studies with results. A results-rich record can exceed 500KB per study in full mode — bound it with summary=true, narrower sections, or the outcomeLimit / adverseEventLimit caps; outcomeLimit / outcomeOffset also page summarized outcomes. A bounded list is resumable: outcomeOffset / seriousEventOffset / otherEventOffset start the next window, and each study's filtersApplied reports what was trimmed and the next offset for every list left short. A previous (alias) NCT ID resolves to its canonical study, named in canonicalNctId.
2026-10-14clinicaltrials_get_field_valueschangedinput schema
2026-10-14clinicaltrials_get_study_countchangedinput schema, output schema
2026-10-14clinicaltrials_search_studieschangedinput schema, output schema

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 94 / 100

provenance80

liveness100

freshness100

hygiene100

+repository +namespace-matches-repo +reachable +uptime-100% +updated-5d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

[email protected] npmthis version is not known to the dependency resolver

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://clinicaltrials.caseyjhand.com/mcp` streamable-http	none	yes	100%	166 ms	2026-07-28	2026-10-19

package	registry	version	runtime	secrets
`clinicaltrialsgov-mcp-server`	npm	2.10.0	npx
`clinicaltrialsgov-mcp-server`	npm	2.10.0	npx

Tools (7)

`clinicaltrials_find_eligible`read-only	Find candidate clinical trials for a patient profile. Provide age, sex, conditions, and location to get studies with their demographic limits, contact information, and recruiting locations. Candidates are matched on age, sex, location, recruitment status, and ClinicalTrials.gov's fuzzy condition search only — inclusion/exclusion criteria are not checked, and a candidate can exclude the requested condition, so review each one's criteria with clinicaltrials_get_study_record before treating it as a match. Results are re-ranked so studies whose own condition matches a requested condition surface above tangential matches from ClinicalTrials.gov's fuzzy condition search. Each candidate returns only the sites matching the requested location (capped by locationLimit), not the study's full registered site list — a large trial can register hundreds of sites worldwide. When none of a candidate's matched sites is recruiting, one recruiting site is added so an enrollable site is never hidden behind a closer closed one: the one nearest the matched sites by their published coordinates, in the requested country whenever a site there recruits, carrying distanceMi, or the first in match order when coordinates are missing. Fetch a study's complete record with clinicaltrials_get_study_record.
`clinicaltrials_get_field_definitions`read-only	Resolve valid field names from the ClinicalTrials.gov data model — the canonical PascalCase identifiers (OverallStatus, EnrollmentCount, LeadSponsorName) accepted by the `fields`, `advancedFilter`, and `sort` parameters of other tools, and as input to clinicaltrials_get_field_values. Select a mode: `"search"` — keyword search returning ranked matches (pass `query`, e.g. "enrollment", "sponsor", "adverse events"); `"drill"` — drill into a specific section by dot-notation path (pass `path`, e.g. "protocolSection.designModule"); `"overview"` — top-level summary of all sections (no additional args).
`clinicaltrials_get_field_values`read-only	Discover valid values for ClinicalTrials.gov fields with study counts per value. Use to explore available filter options before building a search — e.g., valid OverallStatus, Phase, InterventionType, StudyType, or LeadSponsorClass values.
`clinicaltrials_get_study_count`read-only	Get total clinical trial study count from ClinicalTrials.gov matching a query, without fetching study data. Fast and lightweight. Use for quick statistics or to build breakdowns by calling multiple times with different filters (e.g., count by phase, count by status, count recruiting vs completed for a condition).
`clinicaltrials_get_study_record`read-only	Fetch a single clinical trial study by NCT ID from ClinicalTrials.gov. Returns the full study record including protocol details, eligibility criteria, outcomes, arms, interventions, contacts, and locations. Optional locationLimit / outcomeLimit / referenceLimit / nearLocation parameters trim locations, outcomes, and references — original totals are preserved in `filtersApplied` only when a cap actually trims the set.
`clinicaltrials_get_study_results`read-only	Fetch clinical trial results data from ClinicalTrials.gov for completed studies — outcome measures with statistics, adverse events, participant flow, baseline characteristics, and results metadata (limitations & caveats, certain-agreement disclosure restrictions, results point of contact). Only available for studies where hasResults is true. Use clinicaltrials_search_studies first to find studies with results. A results-rich record can exceed 500KB per study in full mode — bound it with summary=true, narrower sections, or the outcomeLimit / adverseEventLimit caps; outcomeLimit / outcomeOffset also page summarized outcomes. A bounded list is resumable: outcomeOffset / seriousEventOffset / otherEventOffset start the next window, and each study's filtersApplied reports what was trimmed and the next offset for every list left short. A previous (alias) NCT ID resolves to its canonical study, named in canonicalNctId.
`clinicaltrials_search_studies`read-only	Search for clinical trial studies from ClinicalTrials.gov. Supports full-text and field-specific queries, status/phase/geographic filters, pagination, sorting, and field selection. Returns a compact per-study index by default; pass the fields parameter to get specific leaves at full fidelity — full study records are ~70KB each.

Schemas: list_tools.

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Official server.json

{
  "name": "io.github.cyanheads/clinicaltrialsgov-mcp-server",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://clinicaltrials.caseyjhand.com/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "2.10.0",
  "packages": [
    {
      "version": "2.10.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "clinicaltrialsgov-mcp-server",
      "runtimeHint": "npx",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "CT_API_BASE_URL",
          "format": "string",
          "default": "https://clinicaltrials.gov/api/v2",
          "description": "ClinicalTrials.gov API base URL."
        },
        {
          "name": "CT_REQUEST_TIMEOUT_MS",
          "format": "string",
          "default": "30000",
          "description": "Per-request timeout in milliseconds."
        },
        {
          "name": "CT_MAX_PAGE_SIZE",
          "format": "string",
          "default": "200",
          "description": "Maximum page size cap."
        },
        {
          "name": "MCP_LOG_LEVEL",
          "format": "string",
          "default": "info",
          "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')."
        }
      ]
    },
    {
      "version": "2.10.0",
      "transport": {
        "url": "http://localhost:3010/mcp",
        "type": "streamable-http"
      },
      "identifier": "clinicaltrialsgov-mcp-server",
      "runtimeHint": "npx",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "MCP_TRANSPORT_TYPE",
          "value": "http",
          "format": "string",
          "description": "Selects the HTTP transport."
        },
        {
          "name": "CT_API_BASE_URL",
          "format": "string",
          "default": "https://clinicaltrials.gov/api/v2",
          "description": "ClinicalTrials.gov API base URL."
        },
        {
          "name": "CT_REQUEST_TIMEOUT_MS",
          "format": "string",
          "default": "30000",
          "description": "Per-request timeout in milliseconds."
        },
        {
          "name": "CT_MAX_PAGE_SIZE",
          "format": "string",
          "default": "200",
          "description": "Maximum page size cap."
        },
        {
          "name": "MCP_HTTP_HOST",
          "format": "string",
          "default": "127.0.0.1",
          "description": "The hostname for the HTTP server."
        },
        {
          "name": "MCP_HTTP_PORT",
          "format": "string",
          "default": "3010",
          "description": "The port to run the HTTP server on."
        },
        {
          "name": "MCP_HTTP_ENDPOINT_PATH",
          "format": "string",
          "default": "/mcp",
          "description": "The endpoint path for the MCP server."
        },
        {
          "name": "MCP_AUTH_MODE",
          "format": "string",
          "default": "none",
          "description": "Authentication mode to use: 'none', 'jwt', or 'oauth'."
        },
        {
          "name": "MCP_LOG_LEVEL",
          "format": "string",
          "default": "info",
          "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn')."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/cyanheads/clinicaltrialsgov-mcp-server",
    "source": "github"
  },
  "description": "Search ClinicalTrials.gov: find studies, retrieve results, match patients to candidate trials."
}