How to Fix LangChain AgentExecutor Not Calling Tools
AgentExecutor's verbose trace shows it choosing a tool, then the chain just finishes - no error, no tool result. Here's why, and the five-check fix.
We automate business processes. Here’s what we learned building them.
We automate business processes and document what we learn. n8n, Claude Code, Make, Zapier, AI agents - one specific problem per post, tested in the actual tool.
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How Claude Code Plan Mode Works (and When to Use It)
Plan mode restricts Claude Code to read-only research until you approve its plan - here's the exact permission model, the keyboard shortcut, and when the extra review step is worth the friction.
Fix LangChain create_react_agent 'unexpected keyword argument prompt'
The TypeError comes from a kwarg rename between langgraph versions - or the wrong create_react_agent import entirely. Here's how to tell which and fix it.
Automate SharePoint Tasks with Power Automate
A working Power Automate pattern for SharePoint document approvals, notifications, and routing - with the subfolder-trigger gotcha most tutorials miss.
How to fix Cursor's Terminal sandbox error on Linux (AppArmor)
Cursor's terminal sandbox fails on Ubuntu 24.04+, Fedora, and Arch because of an AppArmor namespace restriction -- here's the two-command fix and why chmod 4755 makes it worse.
Fix Claude Code MCP "Failed to Connect" (Bun Runtime Bug)
curl reaches your HTTP MCP server fine, but Claude Code's CLI still says 'Failed to connect' -- here's why the Bun runtime is the actual point of failure, and three ways around it.
Fix LangChain Output Parsing Errors (handle_parsing_errors=True)
handle_parsing_errors=True only retries LangChain's free-text ReAct loop -- it can't fix a model that won't format output reliably. Here's what actually works.
Best LLM for AI Agent Workflows: 2026 Cost/Latency Comparison
Which LLM should power your agent? A 2026 cost and task-class breakdown of Claude Opus 4.8, GPT-5.2, Gemini 3.1 Pro, and DeepSeek V3.
Cursor Override OpenAI Base URL Breaks Anthropic Key: Fix
One Cursor settings toggle causes three different Anthropic API key errors. Here is the exact fix and why it can silently undo itself.
Best AI Agent Framework for Node.js Developers in 2026
Mastra, Vercel AI SDK, LangChain.js, or the OpenAI Agents JS SDK? Here's the Node-specific ranking most 2026 roundups skip.
Frequently asked questions
What is AutomateLab?
AutomateLab is an AI development studio. We build agents, automations, and integrations for SMBs, startups, agencies, and operators - and document what we run into in production on this blog. We also ship a set of free, open-source tools and datasets at /products/.
What does the AutomateLab blog cover?
Specific, practitioner-grade answers on n8n, Make, Zapier, Claude Code, MCP, Cursor, AI agents, and the rest of the stack we use to build automations. Each post targets one specific question - an error message, a tool comparison, a setup walkthrough, a pricing breakdown - and ships with code, screenshots, and citations we've verified ourselves.
Who is the AutomateLab blog written for?
Operators who already build automations: solo founders, agency owners, internal-tools engineers, and the no-code crowd making the jump to AI-native workflows. If you're choosing between Make and n8n, debugging Claude Code in WSL, or trying to get cited by ChatGPT, the blog is for you.
Who writes the posts on AutomateLab?
Posts are AI-drafted from our own research outlines and a strict editorial process, then reviewed and fact-checked before publishing. Every code block, command line, and config file is tested in the actual tool. Every external claim links to a primary source we've read.
Is the AutomateLab blog free to read?
Yes. Everything on the site is free, with no email gate or paywall. Each post stands on its own - you can read it, copy the commands, and follow the walkthroughs without signing up for anything.
What services does AutomateLab offer?
Ten service tracks: AI SEO/GEO/AEO, AI support agents, sales and revenue ops, marketing automation, operations, engineering and DevEx, data and reporting, internal tools, recruiting and talent, and fully custom AI builds. Every engagement is fixed scope and ships in two to four weeks. Full catalogue at /services/.
What tools and platforms does AutomateLab specialise in?
On the no-code/low-code side: n8n, Make, and Zapier. On the AI side: Claude (Code, API, Agent SDK), GPT, MCP servers and clients, Cursor, and the broader agent tooling. On infrastructure: Docker, Postgres, Ghost, Notion, HubSpot, and whatever the engagement requires. We pick the cheapest tool that works, not the trendiest.
What open-source products does AutomateLab ship?
Five as of 2026: agency-os (Notion board into the dashboard of a small AI agency, as a Claude Code plugin and MCP server), n8n-mcp (debugging-first MCP server for n8n), the n8n Nodes Catalog (524-node dataset on HuggingFace), publishing-skills (three composable Claude skills for shipping an SEO blog post end to end), and the SaaS webhooks catalog (1,119 events across 30 SaaS products). All free, MIT or CC-BY-4.0. See /products/.
How do you contact AutomateLab?
Email hello@automatelab.tech or use the contact form at /services/contact/. For bugs or feature requests on open-source products, open a GitHub issue on the relevant repo at github.com/AutomateLab-tech.
Where is AutomateLab based?
Algés, Portugal - in the Lisbon metro area. We work with clients globally, async on Slack and Notion with weekly syncs.