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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/mcp/tool-docs/discovery/search-nodes.d.ts.map vendored
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@@ -1 +1 @@
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16
dist/mcp/tool-docs/discovery/search-nodes.js vendored
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@@ -6,7 +6,7 @@ exports.searchNodesDoc = {
category: 'discovery',
essentials: {
description: 'Text search across node names and descriptions. Returns most relevant nodes first, with frequently-used nodes (HTTP Request, Webhook, Set, Code, Slack) prioritized in results. Searches all 800+ nodes including 300+ verified community nodes.',
keyParameters: ['query', 'mode', 'limit', 'source', 'includeExamples'],
keyParameters: ['query', 'mode', 'limit', 'source', 'includeExamples', 'includeOperations'],
example: 'search_nodes({query: "webhook"})',
performance: '<20ms even for complex queries',
tips: [
@@ -15,7 +15,8 @@ exports.searchNodesDoc = {
'FUZZY mode: Handles typos and spelling errors',
'Use quotes for exact phrases: "google sheets"',
'Use source="community" to search only community nodes',
'Use source="verified" for verified community nodes only'
'Use source="verified" for verified community nodes only',
'Use includeOperations=true to get resource/operation trees without a separate get_node call'
]
},
full: {
@@ -25,20 +26,17 @@ exports.searchNodesDoc = {
limit: { type: 'number', description: 'Maximum results to return. Default: 20, Max: 100', required: false },
mode: { type: 'string', description: 'Search mode: "OR" (any word matches, default), "AND" (all words required), "FUZZY" (typo-tolerant)', required: false },
source: { type: 'string', description: 'Filter by node source: "all" (default, everything), "core" (n8n base nodes only), "community" (community nodes only), "verified" (verified community nodes only)', required: false },
includeExamples: { type: 'boolean', description: 'Include top 2 real-world configuration examples from popular templates for each node. Default: false. Adds ~200-400 tokens per node.', required: false }
includeExamples: { type: 'boolean', description: 'Include top 2 real-world configuration examples from popular templates for each node. Default: false. Adds ~200-400 tokens per node.', required: false },
includeOperations: { type: 'boolean', description: 'Include resource/operation tree per node. Default: false. Adds ~100-300 tokens per result but saves a get_node round-trip. Only returned for nodes with resource/operation patterns — trigger nodes and freeform nodes (Code, HTTP Request) omit this field.', required: false }
},
returns: 'Array of node objects sorted by relevance score. Each object contains: nodeType, displayName, description, category, relevance score. For community nodes, also includes: isCommunity (boolean), isVerified (boolean), authorName (string), npmDownloads (number). Common nodes appear first when relevance is similar.',
examples: [
'search_nodes({query: "webhook"}) - Returns Webhook node as top result',
'search_nodes({query: "database"}) - Returns MySQL, Postgres, MongoDB, Redis, etc.',
'search_nodes({query: "google sheets", mode: "AND"}) - Requires both words',
'search_nodes({query: "slak", mode: "FUZZY"}) - Finds Slack despite typo',
'search_nodes({query: "http api"}) - Finds HTTP Request, GraphQL, REST nodes',
'search_nodes({query: "transform data"}) - Finds Set, Code, Function, Item Lists nodes',
'search_nodes({query: "scraping", source: "community"}) - Find community scraping nodes',
'search_nodes({query: "pdf", source: "verified"}) - Find verified community PDF nodes',
'search_nodes({query: "brightdata"}) - Find BrightData community node',
'search_nodes({query: "slack", includeExamples: true}) - Get Slack with template examples'
'search_nodes({query: "slack", includeExamples: true}) - Get Slack with template examples',
'search_nodes({query: "slack", includeOperations: true}) - Get Slack with resource/operation tree (7 resources, 44 ops)'
],
useCases: [
'Finding nodes when you know partial names',

2
dist/mcp/tool-docs/discovery/search-nodes.js.map vendored
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@@ -1 +1 @@
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