A Visual Workflow Builder
Drag steps onto a canvas and connect them. Each step hands its result to the next, so you can see the whole process at a glance and change it without writing code.
AI Workflow Automation
Harness
Build AI Workflows Without Writing Code. Free.
Harness turns the repetitive work your team does by hand into AI workflows you design on a visual canvas. Have AI read your documents and answer from them, sort and reply to email, research the web, and send the results to the right person, on demand or on a schedule. Every run shows exactly what each step did.
Reusable AI Tasks
Set up an AI task once, with its instructions, model and knowledge, then use it in as many workflows as you like. Improve the task and every workflow that uses it gets better.
AI That Reads Your Documents
Upload PDFs, Word files, Markdown or text into a knowledge collection and your AI tasks answer from it. Harness finds the most relevant passages using retrieval-augmented generation (RAG), and for long manuals, contracts and reports, PageIndex reads each document’s sections and pages the way a person would and only states what they actually say. Workflows can add new documents as they run.
Run Now, in the Background or on a Schedule
Run a workflow and wait for the result, send it to a background queue, or schedule it for a set time or on a repeating schedule. Queued work has its own page so you can see what is running.
Choose the Right Model for Each Task
Pick an OpenAI, Anthropic or Groq model task by task, so a quick classification can run on a fast, low-cost model while a detailed report gets the most capable one.
Branches, Loops and Parallel Steps
Send a workflow down different paths depending on a result, repeat steps for every item in a list or until a result meets your standard, and run branches side by side before bringing their results together. Built-in limits make sure every loop finishes.
A Step-by-Step Record of Every Run
Every run shows which steps ran, in what order, how long each took and what went in and out of it. When a result looks wrong, you can see exactly where.
Connect Your Own Tools with MCP
The MCP Gateway lets an AI task use tools and data on your own machines, so a workflow can reach your internal systems without moving anything to the cloud.
Also Included
Models and Email
- Give an AI task Gmail access to search, label and send email
- Live web search for current information
- Email the results of a workflow to the right person
Files and Chat
- Start a workflow from a file, including images the AI can read and classify
- Attach fixed reference files to a task
- Turn a task into a chatbot that remembers the conversation
Developers
- Full developer API with personal API keys
- API Request step to pull data from or push results into other systems
Automate Your Work with AI
Harness turns the repetitive work your team does by hand into AI workflows you design once and run whenever you need them. Start with a single task, grow it into a full process, and see exactly what happened on every run. Harness is currently free to use, so you can start building today.