> For the complete documentation index, see [llms.txt](https://docs.pletor.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pletor.ai/build-agents/nodes.md).
# Nodes
Each node performs one job — generating an image, collecting a text input, applying brand guidelines, routing logic — and you chain them together on the canvas to build complete workflows.
### How nodes work
Every node has **inputs** (left side) and **outputs** (right side). You connect them by dragging from one node's output to another node's input. Data flows left to right through your chain.
A simple example: **Text Prompt** → **Generate Image** → **Upscale Image** takes a user's instructions, generates a visual, and enhances its resolution — all in one run.
Nodes accept different data types depending on their function: text, images, video, audio, or files. The canvas will only let you connect compatible ports.
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### Node categories
When you open the node picker in the Studio, nodes are organized into three categories.
#### Use AI
The creative engines — nodes that generate or transform content using AI models.
* **AI nodes** — Generate and edit images, video, and audio with AI. Includes Generate Image, Generate Video, Lipsync, Subtitles, Speech, and more.
* **Text Assistants** — Run LLMs to generate, rewrite, analyze, or transform text using pre-built or custom instructions.
#### Provide Context
Nodes that feed information into your workflow.
* **Input nodes** — Text Prompt, Upload Image, Upload Video, Upload Audio, Upload File. Collect data from users or provide static assets.
* **Brand nodes** — Brand Context, Visual References, Brand Guidelines, Brand Voice, Brand Docs. Keep every output on-brand.
* **Sticky Note** — Add notes and documentation directly on the canvas. Doesn't affect execution.
#### Automate
Nodes that add logic, control flow, and external connections.
* **Logic nodes** — Composer, Split Text & List Selector, Prompt Concatenator, Human Review, Merge Videos, Rename Asset, Router. Control how data moves through your agent.
* **Integration nodes** — Google Drive, Meta Ads, TikTok, Instagram, LinkedIn. Pull data in or push outputs out.
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### Tips
* **Start simple.** Build a 2-3 node chain first, test it, then add complexity. A Text Prompt → Generate Image → Upscale workflow teaches you the basics in minutes.
* **Test individual nodes** before running the full chain. Click any node and hit Run to see its output in isolation.
* **Use Text Assistants as glue.** Place these nodes between your inputs and generation nodes to enhance prompts, enforce formatting, or combine multiple inputs into a single instruction.
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