Retell
Give your Retell conversational AI agents tools, knowledge, and memory via MCP
Retell Integration
Retell handles the voice. Chanl handles the brain — knowledge base, persistent memory, custom tools, and quality scoring. Connect via MCP and your Retell agent gets a full backend without building one.
What Your Retell Agent Gets
Knowledge Base
Search your docs and policies during live calls — grounded answers, no hallucinations
Persistent Memory
Remember customers across conversations — preferences, history, context
Custom Tools
Call your APIs mid-conversation — CRM, orders, tickets, anything
Prerequisites
- A Retell account with at least one agent
- A Chanl workspace — sign up free
- A Chanl API key (Settings → API Keys)
Setup
https://{workspace-slug}.chanl.dev/{toolset-slug}Example: https://acme.chanl.dev/admin-tools
In your Retell agent's settings, add an MCP server connection:
{
"type": "streamablehttp",
"url": "https://acme.chanl.dev/admin-tools",
"headers": {
"X-API-Key": "chanl_key_abc123..."
}
}Retell discovers all available Chanl tools automatically.
Make a test call and ask something that triggers a tool — like "What's your return policy?" If the knowledge base is set up, you'll see kb_search in the call logs.
Production Setup
For production, create a focused toolset instead of using admin-tools:
chanl toolsets create --name "Support" --slug "support"
chanl toolsets add-tool --toolset support --tool lookup_orderPoint Retell to https://acme.chanl.dev/support — your agent gets only the tools it needs.
Monitoring
Every Retell call connected via MCP is automatically:
- Transcribed with speaker turns and timestamps
- Scored against your quality scorecards
- Analyzed for sentiment, resolution, and patterns
View in Observe → Analytics in the Chanl dashboard.