Zoho CRM Server

A Model Context Protocol (MCP) server that exposes the Zoho CRM v6 REST API as structured tools for LLM agents. Built on FastMCP with async httpx, pydantic v2 configuration, and an OAuth2 refresh-token flow.

Features

• OAuth2 refresh-token exchange with in-memory access-token caching (1 hour TTL)
• Automatic retry once on HTTP 401 after forcing a token refresh
• Typed errors (AuthenticationError, NotFoundError, RateLimitError, APIError)
• Region-aware endpoints: com, eu, in, com.au, jp
• Full CRUD for any CRM module, plus search, COQL, module metadata, user listing, and related-list traversal

Requirements

• Python 3.10+
• mcp>=1.27,<2
• httpx>=0.27.1,<1.0.0
• pydantic>=2.12, pydantic-settings>=2.5.2

Install

python3 -m venv .venv
source .venv/bin/activate
pip install -e ".[dev]"

Configuration

All settings use the ZOHO_ env prefix (or a .env file):

Variable	Default	Description
ZOHO_CLIENT_ID	-	OAuth2 client id
ZOHO_CLIENT_SECRET	-	OAuth2 client secret
ZOHO_REFRESH_TOKEN	-	OAuth2 refresh token
ZOHO_REGION	com	One of com, eu, in, com.au, jp
ZOHO_TIMEOUT	30	HTTP timeout in seconds

Run

zoho-crm-mcp

Or register it in an MCP-capable client with the stdio command above.

Tools

Tool	Zoho CRM endpoint
list_records	GET /crm/v6/{module}
get_record	GET /crm/v6/{module}/{id}
create_record	POST /crm/v6/{module}
update_record	PUT /crm/v6/{module}/{id}
delete_record	DELETE /crm/v6/{module}/{id}
search_records	GET /crm/v6/{module}/search
list_modules	GET /crm/v6/settings/modules
get_module	GET /crm/v6/settings/modules/{module}
list_users	GET /crm/v6/users
coql_query	POST /crm/v6/coql
list_related_records	GET /crm/v6/{module}/{id}/{related_list}

Test

pytest -x --tb=short

License

MIT