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fix: call-actor mcp with invalid tool name #303

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Merged
merged 1 commit into from
Oct 7, 2025
Merged

fix: call-actor mcp with invalid tool name #303

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7 changes: 7 additions & 0 deletions src/tools/actor.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -461,6 +461,13 @@ EXAMPLES:
return buildMCPResponse([`Input is required when step="call". Please provide the input parameter based on the Actor's input schema.`]);
}

// Handle the case where LLM does not respect instructions when calling MCP server Actors
// and does not provide the tool name.
const isMcpToolNameInvalid = mcpToolName === undefined || mcpToolName.trim().length === 0;
if (isActorMcpServer && isMcpToolNameInvalid) {
return buildMCPResponse([`When calling an MCP server Actor, you must specify the tool name in the actor parameter as "{actorName}:{toolName}" in the "actor" input property.`]);
}

// Handle MCP tool calls
if (mcpToolName) {
if (!isActorMcpServer) {
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