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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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13
dist/mcp/tools.js vendored
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@@ -52,6 +52,11 @@ exports.n8nDocumentationToolsFinal = [
description: 'Include top 2 real-world configuration examples from popular templates (default: false)',
default: false,
},
includeOperations: {
type: 'boolean',
default: false,
description: 'Include resource/operation tree per node. Adds ~100-300 tokens per result but saves a get_node round-trip.',
},
source: {
type: 'string',
enum: ['all', 'core', 'community', 'verified'],
@@ -237,14 +242,14 @@ exports.n8nDocumentationToolsFinal = [
},
{
name: 'search_templates',
description: `Search templates with multiple modes. Use searchMode='keyword' for text search, 'by_nodes' to find templates using specific nodes, 'by_task' for curated task-based templates, 'by_metadata' for filtering by complexity/setup time/services.`,
description: `Search templates with multiple modes. Use searchMode='keyword' for text search, 'by_nodes' to find templates using specific nodes, 'by_task' for curated task-based templates, 'by_metadata' for filtering by complexity/setup time/services, 'patterns' for lightweight workflow pattern summaries mined from 2700+ templates.`,
inputSchema: {
type: 'object',
properties: {
searchMode: {
type: 'string',
enum: ['keyword', 'by_nodes', 'by_task', 'by_metadata'],
description: 'Search mode. keyword=text search (default), by_nodes=find by node types, by_task=curated task templates, by_metadata=filter by complexity/services',
enum: ['keyword', 'by_nodes', 'by_task', 'by_metadata', 'patterns'],
description: 'Search mode. keyword=text search (default), by_nodes=find by node types, by_task=curated task templates, by_metadata=filter by complexity/services, patterns=lightweight workflow pattern summaries',
default: 'keyword',
},
query: {
@@ -278,7 +283,7 @@ exports.n8nDocumentationToolsFinal = [
'api_integration',
'database_operations'
],
description: 'For searchMode=by_task: the type of task',
description: 'For searchMode=by_task: the type of task. For searchMode=patterns: optional category filter (omit for overview of all categories).',
},
category: {
type: 'string',