chore: update n8n to 2.13.3 and bump version to 2.41.0

- Updated n8n from 2.12.3 to 2.13.3
- Updated n8n-core from 2.12.0 to 2.13.1
- Updated n8n-workflow from 2.12.0 to 2.13.1
- Updated @n8n/n8n-nodes-langchain from 2.12.0 to 2.13.1
- Rebuilt node database with 1,396 nodes (812 core + 584 community: 516 verified + 68 npm)
- Refreshed community nodes with 581 AI-generated documentation summaries
- Improved documentation generator: strip <think> tags, raw fetch for vLLM chat_template_kwargs
- Incremental community updates: saveNode uses ON CONFLICT DO UPDATE preserving READMEs/AI summaries
- fetch:community now upserts by default (use --rebuild for clean slate)
- Updated README badge and node counts
- Updated CHANGELOG and MEMORY_N8N_UPDATE.md

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

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
czlonkowski
2026-03-26 09:39:57 +01:00
parent 1f0738e637
commit a571ad5ef5
21 changed files with 6878 additions and 2407 deletions

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@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
## [Unreleased]
## [2.41.0] - 2026-03-25
### Changed
- **Updated n8n dependencies**: n8n 2.12.3 → 2.13.3, n8n-core 2.12.0 → 2.13.1, n8n-workflow 2.12.0 → 2.13.1, @n8n/n8n-nodes-langchain 2.12.0 → 2.13.1
- **Rebuilt node database**: 1,396 nodes (812 from n8n-nodes-base/langchain + 584 community: 516 verified + 68 npm)
- **Refreshed community nodes**: 584 total (up from 430), with 581 AI-generated documentation summaries
- **Improved documentation generator**: Strip `<think>` tags from thinking-model responses; use raw fetch for vLLM `chat_template_kwargs` support
- **Incremental community node updates**: `fetch:community` now upserts by default, preserving existing READMEs and AI summaries. Use `--rebuild` for clean slate
Conceived by Romuald Czlonkowski - https://www.aiadvisors.pl/en
## [2.40.5] - 2026-03-22
### Fixed

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@@ -1,9 +1,16 @@
# n8n Update Process - Quick Reference
## ⚡ Recommended Fast Workflow (2025-11-04)
## ⚡ Recommended Fast Workflow (2026-03-25)
**CRITICAL FIRST STEP**: Check existing releases to avoid version conflicts!
**IMPORTANT: Community nodes are preserved incrementally!**
- `npm run update:n8n` rebuilds the base node DB (wipes community nodes temporarily)
- Community nodes must be backed up BEFORE and restored AFTER the base rebuild
- `npm run fetch:community` now upserts by default (preserves READMEs + AI summaries)
- `npm run generate:docs:incremental` only processes nodes missing docs
- Use `generate:docs:readme-only` first, then `generate:docs:summary-only` with a local LLM
```bash
# 1. CHECK EXISTING RELEASES FIRST (prevents version conflicts!)
gh release list | head -5
@@ -15,14 +22,29 @@ git checkout main && git pull
# 3. Check for updates (dry run)
npm run update:n8n:check
# 4. Run update and skip tests (we'll test in CI)
# 4. Back up community nodes BEFORE update (update:n8n rebuilds base DB!)
sqlite3 data/nodes.db ".mode insert nodes" "SELECT * FROM nodes WHERE is_community = 1;" > /tmp/n8n_community_backup.sql
# 5. Run update and skip tests (we'll test in CI)
yes y | npm run update:n8n
# 5. Refresh community nodes (standard practice!)
npm run fetch:community
npm run generate:docs
# 6. Restore community nodes after rebuild
sqlite3 data/nodes.db < /tmp/n8n_community_backup.sql
# 6. Create feature branch
# 7. Refresh community nodes (upserts - preserves existing READMEs + AI summaries!)
npm run fetch:community
# NOTE: Default mode is now "upsert" - no deletion. Use --rebuild for clean slate.
# 8. Generate docs incrementally (only for new/missing nodes)
npm run generate:docs:readme-only # Fetch READMEs from npm (no LLM needed)
# Then with a local LLM server running (LM Studio, vLLM, Ollama):
N8N_MCP_LLM_BASE_URL="http://YOUR_SERVER:PORT/v1" \
N8N_MCP_LLM_MODEL="your-model-name" \
node dist/scripts/generate-community-docs.js --summary-only --skip-existing-summary --llm-concurrency=11
# For vLLM with thinking models, the code auto-sends chat_template_kwargs: {enable_thinking: false}
# Context length needed: 8K minimum (README truncated to 6000 chars, output max 2000 tokens)
# 9. Create feature branch
git checkout -b update/n8n-X.X.X
# 7. Update version in package.json (must be HIGHER than latest release!)

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@@ -5,17 +5,17 @@
[![npm version](https://img.shields.io/npm/v/n8n-mcp.svg)](https://www.npmjs.com/package/n8n-mcp)
[![codecov](https://codecov.io/gh/czlonkowski/n8n-mcp/graph/badge.svg?token=YOUR_TOKEN)](https://codecov.io/gh/czlonkowski/n8n-mcp)
[![Tests](https://img.shields.io/badge/tests-3336%20passing-brightgreen.svg)](https://github.com/czlonkowski/n8n-mcp/actions)
[![n8n version](https://img.shields.io/badge/n8n-2.12.3-orange.svg)](https://github.com/n8n-io/n8n)
[![n8n version](https://img.shields.io/badge/n8n-2.13.3-orange.svg)](https://github.com/n8n-io/n8n)
[![Docker](https://img.shields.io/badge/docker-ghcr.io%2Fczlonkowski%2Fn8n--mcp-green.svg)](https://github.com/czlonkowski/n8n-mcp/pkgs/container/n8n-mcp)
[![Deploy on Railway](https://railway.com/button.svg)](https://railway.com/deploy/n8n-mcp?referralCode=n8n-mcp)
A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Deploy in minutes to give Claude and other AI assistants deep knowledge about n8n's 1,239 workflow automation nodes (809 core + 430 community).
A Model Context Protocol (MCP) server that provides AI assistants with comprehensive access to n8n node documentation, properties, and operations. Deploy in minutes to give Claude and other AI assistants deep knowledge about n8n's 1,396 workflow automation nodes (812 core + 584 community).
## Overview
n8n-MCP serves as a bridge between n8n's workflow automation platform and AI models, enabling them to understand and work with n8n nodes effectively. It provides structured access to:
- 📚 **1,084 n8n nodes** - 537 core nodes + 547 community nodes (301 verified)
- 📚 **1,396 n8n nodes** - 812 core nodes + 584 community nodes (516 verified)
- 🔧 **Node properties** - 99% coverage with detailed schemas
-**Node operations** - 63.6% coverage of available actions
- 📄 **Documentation** - 87% coverage from official n8n docs (including AI nodes)

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@@ -1 +1 @@
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View File

@@ -13,7 +13,7 @@ class NodeRepository {
}
saveNode(node) {
const stmt = this.db.prepare(`
INSERT OR REPLACE INTO nodes (
INSERT INTO nodes (
node_type, package_name, display_name, description,
category, development_style, is_ai_tool, is_trigger,
is_webhook, is_versioned, is_tool_variant, tool_variant_of,
@@ -23,6 +23,35 @@ class NodeRepository {
is_community, is_verified, author_name, author_github_url,
npm_package_name, npm_version, npm_downloads, community_fetched_at
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
ON CONFLICT(node_type) DO UPDATE SET
package_name = excluded.package_name,
display_name = excluded.display_name,
description = excluded.description,
category = excluded.category,
development_style = excluded.development_style,
is_ai_tool = excluded.is_ai_tool,
is_trigger = excluded.is_trigger,
is_webhook = excluded.is_webhook,
is_versioned = excluded.is_versioned,
is_tool_variant = excluded.is_tool_variant,
tool_variant_of = excluded.tool_variant_of,
has_tool_variant = excluded.has_tool_variant,
version = excluded.version,
documentation = excluded.documentation,
properties_schema = excluded.properties_schema,
operations = excluded.operations,
credentials_required = excluded.credentials_required,
outputs = excluded.outputs,
output_names = excluded.output_names,
is_community = excluded.is_community,
is_verified = excluded.is_verified,
author_name = excluded.author_name,
author_github_url = excluded.author_github_url,
npm_package_name = excluded.npm_package_name,
npm_version = excluded.npm_version,
npm_downloads = excluded.npm_downloads,
community_fetched_at = excluded.community_fetched_at,
updated_at = CURRENT_TIMESTAMP
`);
stmt.run(node.nodeType, node.packageName, node.displayName, node.description, node.category, node.style, node.isAITool ? 1 : 0, node.isTrigger ? 1 : 0, node.isWebhook ? 1 : 0, node.isVersioned ? 1 : 0, node.isToolVariant ? 1 : 0, node.toolVariantOf || null, node.hasToolVariant ? 1 : 0, node.version, node.documentation || null, JSON.stringify(node.properties, null, 2), JSON.stringify(node.operations, null, 2), JSON.stringify(node.credentials, null, 2), node.outputs ? JSON.stringify(node.outputs, null, 2) : null, node.outputNames ? JSON.stringify(node.outputNames, null, 2) : null, node.isCommunity ? 1 : 0, node.isVerified ? 1 : 0, node.authorName || null, node.authorGithubUrl || null, node.npmPackageName || null, node.npmVersion || null, node.npmDownloads || 0, node.communityFetchedAt || null);
}

File diff suppressed because one or more lines are too long

View File

@@ -21,6 +21,7 @@ export declare class SingleSessionHTTPServer {
private getActiveSessionCount;
private canCreateSession;
private isValidSessionId;
private isJsonRpcNotification;
private sanitizeErrorForClient;
private updateSessionAccess;
private switchSessionContext;

View File

@@ -1 +1 @@
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View File

@@ -133,6 +133,15 @@ class SingleSessionHTTPServer {
isValidSessionId(sessionId) {
return Boolean(sessionId && sessionId.length > 0);
}
isJsonRpcNotification(body) {
if (!body || typeof body !== 'object')
return false;
const isSingleNotification = (msg) => msg && typeof msg.method === 'string' && !('id' in msg);
if (Array.isArray(body)) {
return body.length > 0 && body.every(isSingleNotification);
}
return isSingleNotification(body);
}
sanitizeErrorForClient(error) {
const isProduction = process.env.NODE_ENV === 'production';
if (error instanceof Error) {
@@ -381,6 +390,20 @@ class SingleSessionHTTPServer {
}
logger_1.logger.info('handleRequest: Reusing existing transport for session', { sessionId });
transport = this.transports[sessionId];
if (!transport) {
if (this.isJsonRpcNotification(req.body)) {
logger_1.logger.info('handleRequest: Session removed during lookup, accepting notification', { sessionId });
res.status(202).end();
return;
}
logger_1.logger.warn('handleRequest: Session removed between check and use (TOCTOU)', { sessionId });
res.status(400).json({
jsonrpc: '2.0',
error: { code: -32000, message: 'Bad Request: Session not found or expired' },
id: req.body?.id || null,
});
return;
}
const isMultiTenantEnabled = process.env.ENABLE_MULTI_TENANT === 'true';
const sessionStrategy = process.env.MULTI_TENANT_SESSION_STRATEGY || 'instance';
if (isMultiTenantEnabled && sessionStrategy === 'shared' && instanceContext) {
@@ -389,6 +412,14 @@ class SingleSessionHTTPServer {
this.updateSessionAccess(sessionId);
}
else {
if (this.isJsonRpcNotification(req.body)) {
logger_1.logger.info('handleRequest: Accepting notification for stale/missing session', {
method: req.body?.method,
sessionId: sessionId || 'none',
});
res.status(202).end();
return;
}
const errorDetails = {
hasSessionId: !!sessionId,
isInitialize: isInitialize,

File diff suppressed because one or more lines are too long

View File

@@ -1 +1 @@
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View File

@@ -2176,10 +2176,13 @@ async function handleUpdateTable(args, context) {
const client = ensureApiConfigured(context);
const { tableId, name } = updateTableSchema.parse(args);
const dataTable = await client.updateDataTable(tableId, { name });
const rawArgs = args;
const hasColumns = rawArgs && typeof rawArgs === 'object' && 'columns' in rawArgs;
return {
success: true,
data: dataTable,
message: `Data table renamed to "${dataTable.name}"`,
message: `Data table renamed to "${dataTable.name}"` +
(hasColumns ? '. Note: columns parameter was ignored — table schema is immutable after creation via the public API' : ''),
};
}
catch (error) {

File diff suppressed because one or more lines are too long

View File

@@ -590,7 +590,7 @@ exports.n8nManagementTools = [
},
{
name: 'n8n_manage_datatable',
description: `Manage n8n data tables and rows. Actions: createTable, listTables, getTable, updateTable, deleteTable, getRows, insertRows, updateRows, upsertRows, deleteRows. Requires n8n enterprise/cloud with data tables feature.`,
description: `Manage n8n data tables and rows. Actions: createTable, listTables, getTable, updateTable, deleteTable, getRows, insertRows, updateRows, upsertRows, deleteRows.`,
inputSchema: {
type: 'object',
properties: {
@@ -600,10 +600,10 @@ exports.n8nManagementTools = [
description: 'Operation to perform',
},
tableId: { type: 'string', description: 'Data table ID (required for all actions except createTable and listTables)' },
name: { type: 'string', description: 'For createTable/updateTable: table name' },
name: { type: 'string', description: 'For createTable: table name. For updateTable: new name (rename only — schema is immutable after creation)' },
columns: {
type: 'array',
description: 'For createTable: column definitions',
description: 'For createTable only: column definitions (schema is immutable after creation via public API)',
items: {
type: 'object',
properties: {

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9005
package-lock.json generated

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View File

@@ -1,6 +1,6 @@
{
"name": "n8n-mcp",
"version": "2.40.5",
"version": "2.41.0",
"description": "Integration between n8n workflow automation and Model Context Protocol (MCP)",
"main": "dist/index.js",
"types": "dist/index.d.ts",
@@ -153,16 +153,16 @@
},
"dependencies": {
"@modelcontextprotocol/sdk": "^1.27.1",
"@n8n/n8n-nodes-langchain": "^2.12.0",
"@n8n/n8n-nodes-langchain": "^2.13.1",
"@supabase/supabase-js": "^2.57.4",
"dotenv": "^16.5.0",
"express": "^5.1.0",
"express-rate-limit": "^7.1.5",
"form-data": "^4.0.5",
"lru-cache": "^11.2.1",
"n8n": "^2.12.3",
"n8n-core": "^2.12.0",
"n8n-workflow": "^2.12.0",
"n8n": "^2.13.3",
"n8n-core": "^2.13.1",
"n8n-workflow": "^2.13.1",
"openai": "^4.77.0",
"sql.js": "^1.13.0",
"tslib": "^2.6.2",

View File

@@ -77,6 +77,8 @@ const DEFAULT_CONFIG: Required<Omit<DocumentationGeneratorConfig, 'baseUrl' | 't
*/
export class DocumentationGenerator {
private client: OpenAI;
private baseUrl: string;
private apiKey: string;
private model: string;
private maxTokens: number;
private timeout: number;
@@ -85,6 +87,8 @@ export class DocumentationGenerator {
constructor(config: DocumentationGeneratorConfig) {
const fullConfig = { ...DEFAULT_CONFIG, ...config };
this.baseUrl = config.baseUrl;
this.apiKey = fullConfig.apiKey;
this.client = new OpenAI({
baseURL: config.baseUrl,
apiKey: fullConfig.apiKey,
@@ -103,21 +107,10 @@ export class DocumentationGenerator {
try {
const prompt = this.buildPrompt(input);
const completion = await this.client.chat.completions.create({
model: this.model,
max_completion_tokens: this.maxTokens,
...(this.temperature !== undefined ? { temperature: this.temperature } : {}),
messages: [
{
role: 'system',
content: this.getSystemPrompt(),
},
{
role: 'user',
content: prompt,
},
],
});
const completion = await this.chatCompletion([
{ role: 'system', content: this.getSystemPrompt() },
{ role: 'user', content: prompt },
], this.maxTokens);
const content = completion.choices[0]?.message?.content;
if (!content) {
@@ -246,20 +239,23 @@ Guidelines:
* Extract JSON from LLM response (handles markdown code blocks)
*/
private extractJson(content: string): string {
// Strip <think>...</think> blocks from thinking models (e.g., Qwen3-Thinking)
const stripped = content.replace(/<think>[\s\S]*?<\/think>/g, '').trim();
// Try to extract from markdown code block
const jsonBlockMatch = content.match(/```(?:json)?\s*([\s\S]*?)```/);
const jsonBlockMatch = stripped.match(/```(?:json)?\s*([\s\S]*?)```/);
if (jsonBlockMatch) {
return jsonBlockMatch[1].trim();
}
// Try to find JSON object directly
const jsonMatch = content.match(/\{[\s\S]*\}/);
const jsonMatch = stripped.match(/\{[\s\S]*\}/);
if (jsonMatch) {
return jsonMatch[0];
}
// Return as-is if no extraction needed
return content.trim();
return stripped;
}
/**
@@ -323,16 +319,9 @@ Guidelines:
*/
async testConnection(): Promise<{ success: boolean; message: string }> {
try {
const completion = await this.client.chat.completions.create({
model: this.model,
max_completion_tokens: 200,
messages: [
{
role: 'user',
content: 'Hello',
},
],
});
const completion = await this.chatCompletion([
{ role: 'user', content: 'Hello' },
], 200);
if (completion.choices[0]?.message?.content) {
return { success: true, message: `Connected to ${this.model}` };
@@ -345,6 +334,44 @@ Guidelines:
}
}
/**
* Make a chat completion request with chat_template_kwargs support for vLLM thinking models
*/
private async chatCompletion(
messages: Array<{ role: string; content: string }>,
maxTokens: number
): Promise<{ choices: Array<{ message: { content: string | null } }> }> {
const controller = new AbortController();
const timeoutId = setTimeout(() => controller.abort(), this.timeout);
try {
const response = await fetch(`${this.baseUrl}/chat/completions`, {
method: 'POST',
headers: {
'Content-Type': 'application/json',
...(this.apiKey !== 'not-needed' ? { Authorization: `Bearer ${this.apiKey}` } : {}),
},
body: JSON.stringify({
model: this.model,
messages,
max_completion_tokens: maxTokens,
...(this.temperature !== undefined ? { temperature: this.temperature } : {}),
chat_template_kwargs: { enable_thinking: false },
}),
signal: controller.signal,
});
if (!response.ok) {
const text = await response.text();
throw new Error(`${response.status} ${text}`);
}
return (await response.json()) as { choices: Array<{ message: { content: string | null } }> };
} finally {
clearTimeout(timeoutId);
}
}
private sleep(ms: number): Promise<void> {
return new Promise((resolve) => setTimeout(resolve, ms));
}

View File

@@ -35,7 +35,7 @@ export class NodeRepository {
*/
saveNode(node: ParsedNode & Partial<CommunityNodeFields>): void {
const stmt = this.db.prepare(`
INSERT OR REPLACE INTO nodes (
INSERT INTO nodes (
node_type, package_name, display_name, description,
category, development_style, is_ai_tool, is_trigger,
is_webhook, is_versioned, is_tool_variant, tool_variant_of,
@@ -45,6 +45,35 @@ export class NodeRepository {
is_community, is_verified, author_name, author_github_url,
npm_package_name, npm_version, npm_downloads, community_fetched_at
) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
ON CONFLICT(node_type) DO UPDATE SET
package_name = excluded.package_name,
display_name = excluded.display_name,
description = excluded.description,
category = excluded.category,
development_style = excluded.development_style,
is_ai_tool = excluded.is_ai_tool,
is_trigger = excluded.is_trigger,
is_webhook = excluded.is_webhook,
is_versioned = excluded.is_versioned,
is_tool_variant = excluded.is_tool_variant,
tool_variant_of = excluded.tool_variant_of,
has_tool_variant = excluded.has_tool_variant,
version = excluded.version,
documentation = excluded.documentation,
properties_schema = excluded.properties_schema,
operations = excluded.operations,
credentials_required = excluded.credentials_required,
outputs = excluded.outputs,
output_names = excluded.output_names,
is_community = excluded.is_community,
is_verified = excluded.is_verified,
author_name = excluded.author_name,
author_github_url = excluded.author_github_url,
npm_package_name = excluded.npm_package_name,
npm_version = excluded.npm_version,
npm_downloads = excluded.npm_downloads,
community_fetched_at = excluded.community_fetched_at,
updated_at = CURRENT_TIMESTAMP
`);
stmt.run(

View File

@@ -3,13 +3,14 @@
* Fetch community nodes from n8n Strapi API and npm registry.
*
* Usage:
* npm run fetch:community # Full rebuild (verified + top 100 npm)
* npm run fetch:community # Upsert all (preserves READMEs and AI summaries)
* npm run fetch:community:verified # Verified nodes only (fast)
* npm run fetch:community:update # Incremental update (skip existing)
*
* Options:
* --verified-only Only fetch verified nodes from Strapi API
* --update Skip nodes that already exist in database
* --rebuild Delete all community nodes first (wipes READMEs/AI summaries!)
* --npm-limit=N Maximum number of npm packages to fetch (default: 100)
* --staging Use staging Strapi API instead of production
*/
@@ -22,6 +23,7 @@ import { createDatabaseAdapter } from '../database/database-adapter';
interface CliOptions {
verifiedOnly: boolean;
update: boolean;
rebuild: boolean;
npmLimit: number;
staging: boolean;
}
@@ -32,6 +34,7 @@ function parseArgs(): CliOptions {
const options: CliOptions = {
verifiedOnly: false,
update: false,
rebuild: false,
npmLimit: 100,
staging: false,
};
@@ -41,6 +44,8 @@ function parseArgs(): CliOptions {
options.verifiedOnly = true;
} else if (arg === '--update') {
options.update = true;
} else if (arg === '--rebuild') {
options.rebuild = true;
} else if (arg === '--staging') {
options.staging = true;
} else if (arg.startsWith('--npm-limit=')) {
@@ -73,7 +78,7 @@ async function main(): Promise<void> {
// Print options
console.log('Options:');
console.log(` - Mode: ${cliOptions.update ? 'Update (incremental)' : 'Rebuild'}`);
console.log(` - Mode: ${cliOptions.rebuild ? 'Rebuild (clean slate)' : cliOptions.update ? 'Update (skip existing)' : 'Upsert (preserves docs)'}`);
console.log(` - Verified only: ${cliOptions.verifiedOnly ? 'Yes' : 'No'}`);
if (!cliOptions.verifiedOnly) {
console.log(` - npm package limit: ${cliOptions.npmLimit}`);
@@ -92,9 +97,10 @@ async function main(): Promise<void> {
const environment = cliOptions.staging ? 'staging' : 'production';
const service = new CommunityNodeService(repository, environment);
// If not updating, delete existing community nodes
if (!cliOptions.update) {
console.log('\nClearing existing community nodes...');
// Only delete existing community nodes when --rebuild is explicitly requested
if (cliOptions.rebuild) {
console.log('\nClearing existing community nodes (--rebuild)...');
console.log(' WARNING: This wipes READMEs and AI summaries!');
const deleted = service.deleteCommunityNodes();
console.log(` Deleted ${deleted} existing community nodes`);
}