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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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2
dist/services/expression-validator.d.ts vendored
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@@ -12,6 +12,7 @@ interface ExpressionContext {
hasInputData?: boolean;
}
export declare class ExpressionValidator {
private static readonly BARE_EXPRESSION_PATTERNS;
private static readonly EXPRESSION_PATTERN;
private static readonly VARIABLE_PATTERNS;
static validateExpression(expression: string, context: ExpressionContext): ExpressionValidationResult;
@@ -21,6 +22,7 @@ export declare class ExpressionValidator {
private static checkCommonMistakes;
private static checkNodeReferences;
static validateNodeExpressions(parameters: any, context: ExpressionContext): ExpressionValidationResult;
private static checkBareExpression;
private static validateParametersRecursive;
}
export {};