Umans AI Coding Plan

Access 8 Umans AI Coding Plan models through Mastra's model router. Authentication is handled automatically using the UMANS_AI_CODING_PLAN_API_KEY environment variable.

Learn more in the Umans AI Coding Plan documentation.

.env

UMANS_AI_CODING_PLAN_API_KEY=your-api-key

src/mastra/agents/my-agent.ts

import { Agent } from "@mastra/core/agent";

const agent = new Agent({
  id: "my-agent",
  name: "My Agent",
  instructions: "You are a helpful assistant",
  model: "umans-ai-coding-plan/umans-coder"
});

// Generate a response
const response = await agent.generate("Hello!");

// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
  console.log(chunk);
}

note

Mastra uses the OpenAI-compatible /chat/completions endpoint. Some provider-specific features may not be available. Check the Umans AI Coding Plan documentation for details.

Models

8 available models

Model	Context	Tools	Reasoning	Image	Audio	Video	Input $/1M	Output $/1M
umans-ai-coding-plan/umans-coder	262K						—	—
umans-ai-coding-plan/umans-deepseek-v4-flash-0731	1.0M						—	—
umans-ai-coding-plan/umans-deepseek-v4-pro-0813	1.0M						—	—
umans-ai-coding-plan/umans-flash	262K						—	—
umans-ai-coding-plan/umans-glm-5.2	406K						—	—
umans-ai-coding-plan/umans-kimi-k2.7	262K						—	—
umans-ai-coding-plan/umans-kimi-k3	1.0M						—	—
umans-ai-coding-plan/umans-qwen3.6-35b-a3b	262K						—	—

Model availability, capabilities, context windows, and pricing are sourced from models.dev and may change.

Advanced configuration

Custom headers

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "custom-agent",
  name: "custom-agent",
  model: {
    url: "https://api.code.umans.ai/v1",
    id: "umans-ai-coding-plan/umans-coder",
    apiKey: process.env.UMANS_AI_CODING_PLAN_API_KEY,
    headers: {
      "X-Custom-Header": "value"
    }
  }
});

Dynamic model selection

src/mastra/agents/my-agent.ts

const agent = new Agent({
  id: "dynamic-agent",
  name: "Dynamic Agent",
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === "complex";
    return useAdvanced
      ? "umans-ai-coding-plan/umans-qwen3.6-35b-a3b"
      : "umans-ai-coding-plan/umans-coder";
  }
});