MoleCare MCP Server

Model Context Protocol (MCP) server that gives Claude and other MCP clients access to:

1. Dermatology knowledge — ABCDE education, SNOMED CT / ICD-10 helpers, risk-factor prompts
2. Optional MoleCare API tools — moles, trends, analysis (your backend + API key)
3. Optional MLOps / ops tools — health checks, MLflow, feature store, infra (mock-first)

Not a medical device. Outputs are educational and operational aids only. Do not use for diagnosis or treatment decisions.

Product site: molecare.co.uk · App: iOS · Android

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Why this exists

MoleCare helps people track moles over time and prepare for clinician visits. This MCP server lets developers and operators:

• Query educational skin-health knowledge from Claude Desktop / Cursor
• Prototype assistant flows against a MoleCare-compatible API
• Explore MLOps tooling with safe mock data when no credentials are set

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Quick start

No credentials, no database, no cloud account. Add this to your MCP client config and restart it:

{
  "mcpServers": {
    "molecare": {
      "command": "npx",
      "args": ["-y", "molecare-mcp"]
    }
  }
}

For Claude Desktop on macOS that file is ~/Library/Application Support/Claude/claude_desktop_config.json.

The dermatology knowledge tools work immediately — they read from a knowledge base bundled in the package. Everything that talks to a backend returns clearly-labelled mock data until you configure it, so you can explore the whole tool surface before deciding whether you want any of it.

To try it without a client at all:

npx -y molecare-mcp

It starts and waits on stdio. No output means it is working.

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Connecting a real backend

Only needed if you are running a MoleCare-compatible API:

{
  "mcpServers": {
    "molecare": {
      "command": "npx",
      "args": ["-y", "molecare-mcp"],
      "env": {
        "MOLECARE_API_URL": "http://localhost:8080/api",
        "MOLECARE_API_KEY": "your-local-api-key"
      }
    }
  }
}

Use localhost (or your own deployment). Do not paste production keys into config files that sync to cloud drives.

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Environment variables

All optional unless you want live backends.

Variable	Purpose	Example
MOLECARE_API_URL	MoleCare HTTP API	http://localhost:8080/api
MOLECARE_API_KEY	API bearer / key	local-dev-key
ONTOLOGY_API_URL	Ontology service	http://localhost:8081
MLFLOW_TRACKING_URI	MLflow	http://localhost:5000
FEAST_REPO_PATH / feature store URL	Feast	—
AWS_REGION	EC2 / CloudWatch clients	us-east-1
GITHUB_TOKEN	CI/CD tools	—
MCP_HEALTH_PORT	Bind an HTTP /health endpoint. Unset by default — stdio clients do not need it	3000
PORT	Same, for container health probes	3000

See .env.example.

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Tools

Dermatology knowledge — no setup required

These are the reason most people install this. They answer from a bundled knowledge base and need no API, no key, and no network.

Tool	Description
search_medical_info	Search the dermatology knowledge base
lookup_medical_concept	Look up a SNOMED CT concept
search_medical_concepts	Search conditions by name or description
map_snomed_to_icd10	Map a SNOMED CT code to ICD-10
classify_lesion_features	ABCDE-style feature descriptors for a lesion
assess_risk_from_factors	Educational risk scoring from stated risk factors
get_condition_risk_factors	Known risk factors for a condition
get_condition_progression	Typical progression stages for a condition
get_malignant_conditions	Malignant skin conditions with codes

Resources: molecare://knowledge/* — ABCDE criteria, Fitzpatrick skin types, prevention, when to see a dermatologist, SNOMED CT and ICD-10 references.

MoleCare product data — needs an API

Returns labelled mock data until MOLECARE_API_URL is set.

Tool	Description
get_user_moles	List moles for a user id
get_mole_analysis	Analysis payload for a mole
get_mole_changes	Change history for a mole
get_user_risk_factors	A user's risk profile
compare_moles	Compare two moles

<details> <summary><b>Operations and MLOps tooling</b> (~35 tools — MoleCare's own infrastructure)</summary>

These exist because MoleCare operates this stack from an assistant. They are of little use outside that context, and all of them return mock data unless the matching backend is configured.

Area	Tools
Health	get_system_health, check_server_health, get_service_health, clear_cache
MLflow	get_mlflow_experiments, get_mlflow_runs, get_registered_models, get_model_version, compare_model_runs, get_training_runs
Feature store	get_feature_views, get_feature_view_details, get_feature_freshness, get_online_features, get_feature_store_stats
CI/CD	get_pipeline_runs, get_pipeline_summary, get_deployments, get_deployment_status, get_releases
AWS	get_ec2_instances, get_ec2_instance, get_ec2_health, get_ec2_metrics
Apps	get_app_status, get_web_app_status, get_mobile_api_status, get_all_apps_status, get_app_metrics, get_app_errors, get_app_versions, get_app_store_status
Database	get_database_status, get_database_metrics, get_slow_queries, get_table_stats, get_backup_history, get_connection_pools
Kubernetes	get_kubernetes_status

The AWS tools need @aws-sdk/client-ec2 and @aws-sdk/client-cloudwatch, which are optional peer dependencies — they are not installed by default, because they add 33 MB that nobody wanting the dermatology tools should have to download. Install them yourself if you want live AWS data:

npm i @aws-sdk/client-ec2 @aws-sdk/client-cloudwatch

</details>

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Architecture

Claude / Cursor / MCP client
        │ stdio (JSON-RPC)
        ▼
  molecare-mcp
   ├─ medical KB (local)
   ├─ MoleCare API client (optional)
   ├─ ontology / MLflow / Feast clients (optional)
   └─ AWS / CI clients (optional, mock if unset)
        │
        └─ optional HTTP GET /health  (Docker / ECS)

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Docker

docker build -t molecare-mcp .
docker run --rm -p 3000:3000 molecare-mcp
curl http://localhost:3000/health

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Security

• Never commit .env files or API keys — see SECURITY.md to report a vulnerability
• Prefer mock mode for demos and screenshots
• Tools that accept userId can return PHI only if you point them at a real backend with real auth — treat that as production
• Rate-limit and auth belong on your API, not only on the MCP process

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Medical disclaimer

MoleCare MCP provides educational information and developer tooling. It does not diagnose melanoma or any disease. Always consult a qualified clinician for medical concerns.

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Development

git clone https://github.com/MoleCare/molecare-mcp.git
cd molecare-mcp
npm install
npm run build
npm run dev      # auto-reload
npm run inspect  # browse tools in MCP Inspector

Contributions are welcome. Read CONTRIBUTING.md first — it covers the mock-first rule, the clinical-safety boundary for anything touching medical content, and how to pick up a good first issue.

Please keep secrets out of examples and prefer localhost defaults.

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Related

Environment variables: .env.example is the authoritative list (all 27 variables read by the source). Regenerate the ground truth with grep -rhoE "process\.env\.[A-Z_0-9]+" src/. ONTOLOGY_API_URL and FEAST_REPO_PATH are not read by any source file.

• Model Context Protocol
• MoleCare
• MoleCare-ML — melanoma classification service and training notebooks

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License

Apache-2.0 © MoleCare LTD