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feat: add n8n_generate_workflow tool for hosted workflow generation

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Add new MCP tool that enables AI-powered workflow generation from natural
language descriptions. Uses handler delegation pattern — hosting environments
inject a GenerateWorkflowHandler via EngineOptions, self-hosted instances
receive a hosted-only informational response.

Handler flows through N8NMCPEngine → SingleSessionHTTPServer →
N8NDocumentationMCPServer with helpers for createWorkflow, validateWorkflow,
autofixWorkflow, and getWorkflow.

Includes full tool documentation, tests, and corrected tools overview count.

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
czlonkowski
2026-03-31 12:32:31 +02:00
parent 3417c6701c
commit 198e773bb3
81 changed files with 784 additions and 177 deletions
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5
dist/services/n8n-validation.d.ts vendored
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@@ -30,10 +30,10 @@ export declare const workflowNodeSchema: z.ZodObject<{
maxTries?: number | undefined;
waitBetweenTries?: number | undefined;
alwaysOutputData?: boolean | undefined;
executeOnce?: boolean | undefined;
disabled?: boolean | undefined;
notes?: string | undefined;
notesInFlow?: boolean | undefined;
executeOnce?: boolean | undefined;
}, {
type: string;
id: string;
@@ -47,10 +47,10 @@ export declare const workflowNodeSchema: z.ZodObject<{
maxTries?: number | undefined;
waitBetweenTries?: number | undefined;
alwaysOutputData?: boolean | undefined;
executeOnce?: boolean | undefined;
disabled?: boolean | undefined;
notes?: string | undefined;
notesInFlow?: boolean | undefined;
executeOnce?: boolean | undefined;
}>;
export declare const workflowConnectionSchema: z.ZodRecord<z.ZodString, z.ZodObject<{
main: z.ZodOptional<z.ZodArray<z.ZodArray<z.ZodObject<{
@@ -413,6 +413,7 @@ export declare function cleanWorkflowForCreate(workflow: Partial<Workflow>): Par
export declare function cleanWorkflowForUpdate(workflow: Workflow): Partial<Workflow>;
export declare function validateWorkflowStructure(workflow: Partial<Workflow>): string[];
export declare function hasWebhookTrigger(workflow: Workflow): boolean;
export declare function validateConditionNodeStructure(node: WorkflowNode): string[];
export declare function validateFilterBasedNodeMetadata(node: WorkflowNode): string[];
export declare function validateOperatorStructure(operator: any, path: string): string[];
export declare function getWebhookUrl(workflow: Workflow): string | null;