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Fiverr Pro
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$
USD
I will build custom n8n langchain or crewai agent for your workflow
Brandon C.
About this gig
I will build a custom n8n, LangChain, or CrewAI AI agent that runs one real business workflow.
This is not a chatbot. You get an agent that uses your tools, follows a defined process, and hands back working automation you own.
What I Build
- Lead follow-up and qualification
- Inbox + CRM triage and draft replies
- Support agents with escalation rules
- Research / reporting agents
- Internal ops workflows (Sheets, Slack, email, APIs)
My Tech Stack
- n8n, LangChain, LangGraph, CrewAI, OpenClaw, Python, Claude, ChatGPT, Gemini, Grok, Slack, Gmail, Google Sheets, HubSpot, and custom APIs
Packages
- Basic - 1 agent, 1 workflow, 1 integration. n8n export or source. 7-day support.
- Standard - Memory or RAG, 3 integrations, docs, deploy help, 14-day support.
- Premium - Multi-agent system, 5 integrations, logging, human-in-the-loop, training, 30-day support.
Process
- You send the workflow and the apps to connect
- I confirm scope before building
- I build, test, and hand off
- You get a walkthrough and a support window
You provide API keys. You keep the code or n8n workflow. Hosting is your unless you add the deploy extra.
US-based. Message the exact workflow before ordering so the package matches job.
Get to know Brandon C.
Brandon C.
AI Product Engineer
- FromUnited States
- Member sinceOct 2018
- Last delivery3 years
Languages
English, Spanish
I'm Brandon M. Crenshaw (@brandononchain), AI/Web3 Product Engineer & founder of Lobstack.ai.
I build production-grade autonomous AI agents with persistent memory, tool calling & reliable 24/7 execution using OpenClaw, LangChain, CrewAI, Claude, n8n and more.
Save 20+ hrs/week on workflows, support, quant systems & data tasks. Full code + support included.
GitHub: /brandononchain
X: @brandononchain
Website: https://brandononchain.com
Message your use case—let's build your agent.
FAQ
Do I need to provide my own API keys?
Yes. To ensure you have full ownership and control over your data and costs, you will need to provide API keys for the LLM (e.g., OpenAI, Anthropic) and any third-party tools used. I will guide you through the secure setup.
What is the difference between a Chatbot and an Agent?
A chatbot waits for a prompt and answers based on its training. An Agent is given a goal, decides which tools to use, executes tasks (like searching the web or updating a DB), and iterates until the goal is achieved.
Can the agent be integrated into my existing website or app?
Absolutely. I can deliver the agent as a standalone backend service, a headless API, or integrated directly into your existing React/Next.js or Python infrastructure.
Is my data secure?
Security is a priority. I use enterprise-grade patterns for data handling. For sensitive industries, I can deploy "Local LLMs" (like Llama 3) so your data never leaves your private server.
Do you offer post-launch support?
Yes. All packages include a walkthrough of the code. My Premium tier includes 14 days of priority technical support to ensure a smooth transition into your production environment.
