ICF Server

A Model Context Protocol (MCP) server that provides access to the WHO International Classification of Functioning, Disability and Health (ICF) via the WHO ICD-API — plus a built-in library of standardized clinical assessment instruments (GAD-7, PHQ-9, RADAI-5, SLEDAI-2K, WHODAS 2.0, and more) mapped to ICF codes for Remote Patient Monitoring (RPM) workflows.

What is ICF?

The ICF is a WHO classification that complements ICD (diagnosis codes) by describing how health conditions affect a person's functioning in daily life. It covers:

• Body Functions (b) - Physiological and psychological functions
• Body Structures (s) - Anatomical parts of the body
• Activities and Participation (d) - Task execution and life involvement
• Environmental Factors (e) - Physical, social, and attitudinal environment

Tools

ICF Classification (12 tools)

Tool	Description
icf_lookup	Look up a specific ICF code (e.g., b280, d450)
icf_search	Search by keyword (e.g., "walking difficulty", "pain")
icf_browse_category	Browse categories and sub-chapters: b, d4, e3, etc.
icf_get_children	Get subcategories of a code
icf_get_parent	Navigate up to a code's parent category
icf_get_siblings	Find related codes at the same level
icf_get_code_chain	Full hierarchy path from root to a code
icf_validate_code	Validate format, qualifiers, and existence
icf_parse_qualified_code	Parse qualified codes: d450.23, s730.312, e120+3
icf_build_profile	Build a functional profile from multiple codes
icf_explain_qualifier	Component-specific qualifier reference (b/s/d/e)
icf_overview	Full ICF classification overview

Clinical Assessment Instruments (5 tools)

Tool	Description
icf_list_instruments	Catalog of assessment instruments, filterable by domain
icf_instrument_details	Full questionnaire: items, options, scoring, ICF mappings
icf_score_instrument	Score responses → severity, interpretation, ICF qualifier
icf_suggest_instruments	Match instruments to a condition, ICF code, or domain
icf_instrument_icf_mapping	How an instrument maps to ICF codes by component

Included Instruments

Instrument	Domain	Items	Use Case
GAD-7	Mental Health	7	Generalized anxiety screening/monitoring
PHQ-9	Mental Health	9	Depression severity
RADAI-5	Rheumatology	5	RA disease activity (patient-reported)
SLEDAI-2K	Rheumatology	24	Lupus disease activity (weighted, 9 organ systems)
HAQ-DI	Rheumatology	20	Functional disability (8 ADL categories)
WHODAS 2.0	General Function	12	WHO disability assessment (ICF-derived)
PROMIS-10	General Health	10	Global physical/mental health
CAT	Respiratory	8	COPD impact
ODI	Pain/MSK	10	Low back pain disability
NRS Pain	Pain	1	Rapid pain intensity
Short FES-I	Geriatrics	7	Fear of falling

Every instrument includes full item text, response scales, validated scoring algorithms (including SLEDAI-2K organ-system weights and HAQ-DI category scoring), score interpretation ranges, ICF qualifier mappings, and recommended RPM reassessment frequency.

Prerequisites

1. WHO ICD-API credentials (free): Register at https://icd.who.int/icdapi
2. Python 3.11+

Installation

# Clone the repository
git clone https://github.com/stayce/icf-mcp-server.git
cd icf-mcp-server

# Create virtual environment
python3 -m venv .venv
source .venv/bin/activate

# Install dependencies
pip install -e .

Configuration

Create a .env file with your WHO API credentials:

cp .env.example .env
# Edit .env with your credentials

Usage with Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "icf": {
      "command": "/path/to/icf-mcp-server/.venv/bin/python",
      "args": ["-m", "icf_mcp"],
      "env": {
        "WHO_ICD_CLIENT_ID": "your_client_id",
        "WHO_ICD_CLIENT_SECRET": "your_client_secret"
      }
    }
  }
}

Restart Claude Desktop to load the server.

Example Queries

Once configured, you can ask Claude:

ICF classification:

• "Look up ICF code b280"
• "Search ICF for walking difficulties"
• "What are the subcategories under d4 (Mobility)?"
• "Parse the qualified code d450.23"
• "Build an ICF profile from b280, d450, and e120"
• "Show the hierarchy chain for b28010"

Clinical assessment:

• "What instruments are available for rheumatoid arthritis?"
• "Show me the GAD-7 questionnaire"
• "Score this PHQ-9: 2,2,1,2,1,1,2,0,0"
• "Score a SLEDAI with arthritis, rash, and fever present"
• "Which ICF codes does WHODAS 2.0 map to?"
• "Suggest an instrument for monitoring pain (b280)"

Remote Patient Monitoring (RPM)

This server is designed to support RPM questionnaire workflows:

1. Design — icf_suggest_instruments picks validated instruments for a condition; icf_instrument_details provides the exact items and response scales for your questionnaire platform
2. Score — icf_score_instrument converts patient responses into severity levels with clinical interpretation
3. Code — Scores map to ICF qualifiers automatically; icf_build_profile documents functional status in standard ICF terms
4. Monitor — Each instrument includes a recommended RPM reassessment frequency

Development

# Install in development mode
pip install -e ".[dev]"

# Run tests
python -m pytest

# Test the client directly
python -c "
import asyncio
from icf_mcp.who_client import WHOICFClient

async def test():
    client = WHOICFClient(client_id='...', client_secret='...')
    results = await client.search('pain')
    print(results)
    await client.close()

asyncio.run(test())
"

Related Projects

• icd-mcp-cloudflare — WHO ICD-10/ICD-11 MCP server (Cloudflare Workers)
• icf-mcp-cloudflare — ICF MCP server for Cloudflare Workers

API Reference

This server uses the WHO ICD-API which provides programmatic access to both ICD-11 and ICF classifications.

• API Documentation: https://icd.who.int/docs/icd-api/APIDoc-Version2/
• ICF Browser: https://icd.who.int/dev11/l-icf/en

Disclaimer

Assessment instruments are provided for informational and workflow-support purposes. Scoring and interpretation ranges follow published literature but do not replace clinical judgment. Instrument copyrights belong to their respective authors; verify licensing requirements for commercial use (e.g., HAQ-DI, CAT).

License

MIT License - see LICENSE

Contributing

Contributions welcome! Please open an issue or submit a pull request.

Acknowledgments

• World Health Organization for the ICD-API and ICF classification
• Anthropic for the Model Context Protocol
• Instrument authors: Spitzer et al. (GAD-7), Kroenke et al. (PHQ-9), Leeb et al. (RADAI-5), Gladman et al. (SLEDAI-2K), Üstün et al. (WHODAS 2.0), Fries et al. (HAQ-DI), Hays et al. (PROMIS), Jones et al. (CAT), Fairbank & Pynsent (ODI), Kempen et al. (Short FES-I)