AIcss · UI components for AI agents<br>Free to use UI componentsUI components<br>for AI Agents<br>Beautifully crafted, copy-paste blocks for everything an agent shows mid-conversation: thinking states, tool calls, streaming text, tables and more.<br>Browse components

Thinking & Reasoning<br>2 components<br>Thinking

Thinking StateThinking & Reasoning

Thinking…

Thinking + ReasoningThinking & Reasoning

Tool & Action States<br>3 components<br>Searching “JWT auth vulnerabilities and middleware security best practices”<br>JWT verification best practices·auth0.com/blog/jwt-security-best-practices<br>Node.js authentication security guide·owasp.org/www-project-nodejs-goat<br>JWT attacks · Web Security Academy·portswigger.net/web-security/jwt

Web SearchTool & Action States

src/auth.ts+4-1<br>1212export function getToken() {<br>13- return localStorage.token;<br>13+ const t = cookies.get("session");<br>14+ if (!t) throw new Error("no session");<br>15+ return t;<br>1416}

File DiffTool & Action States

1024 × 1024<br>Generating image“a calm mountain lake at dawn”

Image GenerationTool & Action States

Text Outputs<br>4 components<br>Here's a quick summary. The migration touches three modules and is safe to run incrementally.<br>I'd recommend starting with the auth service, then rolling out the rest behind a feature flag.

Text ResponseText Outputs

Streaming TextText Outputs

Transformers scale well with data and compute1, though attention is quadratic in sequence length2.<br>1Attention Is All You Need·arxiv.org2Efficient Transformers: A Survey·arxiv.org

Inline CitationsText Outputs

utils.tsCopy<br>1export const sum = (a: number, b: number) =><br>2 a + b;<br>4export const clamp = (n: number, min: number, max: number) =><br>5 Math.min(Math.max(n, min), max);

Code BlockText Outputs

Structured Outputs<br>3 components<br>To-dos0/5Scaffold the project structure<br>Build the component registry<br>Implement entitlement gating<br>Wire up Stripe checkout<br>Polish the landing page

To-do ListStructured Outputs

Model<br>Context<br>$/1M in

gpt-4o<br>128k<br>$5.00

claude-3.5<br>200k<br>$3.00

llama-3.1<br>128k<br>$0.90

Data TableStructured Outputs

Feature<br>Personal<br>Enterprise

Unlimited projects

All components

Team-wide usage

Priority support

Comparison TableStructured Outputs