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Elicitation
Last update:
May 18, 2026
Enable your MCP client to collect user input based on server-defined schemas.
Elicitation is the inverse of sampling: the server asks the client to collect additional user input according to a schema.
Elicitation Request Format (from server):
{
"message": "Would you like to check alternative flights?",
"requestedSchema": {
"type": "object",
"properties": {
"checkAlternatives": { "type": "string" },
"flexibleDates": { "type": "string" }
}
}
}
- Define your elicitation handler function.ADDITIONAL INFORMATION:
<cfscript>
function myElicitationHandler(request) {
var message = request.message;
var requestedSchema = request.requestedSchema;
return {
action: "accept",
content: {
checkAlternatives: "true",
flexibleDates: "next_day"
}
};
}
</cfscript>
- Configure MCP client with elicitation enabled.ADDITIONAL INFORMATION:
<cfscript>
configData = {
transport: { /* transport config */ },
capabilities: {
elicitation: true
},
elicitationConsumer: myElicitationHandler
};
mcpClient = MCPClient(configData);
</cfscript>
Result
Response Format
| Field | Type | Required | Values | Description |
|---|---|---|---|---|
| action | String | Yes | "accept", "decline", "cancel" | User's response |
| content | Struct | Conditional | Key-value pairs | Required if action is "accept" |
Your MCP client can now receive elicitation requests, collect user input per schema, and return structured responses.
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