Mintplex-Labs/anything-llm · error · Error

No DeepSeek API key was set.

Error message

No DeepSeek API key was set.

What it means

Constructor guard for DeepSeekLLM: the DEEPSEEK_API_KEY environment variable is unset, so no DeepSeek client can be constructed. Instantiating this provider without configuring the key aborts immediately.

Solutions

  1. Set the DeepSeek API key in provider settings or env.
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at provider construction when no DeepSeek API key is configured.

Common situations: DeepSeek selected as LLM provider without an API key.

AI-assisted analysis of Mintplex-Labs/anything-llm@3aec848f28 (2026-08-18). Data as JSON: /api/errors/ff2e6dab5a876fc7. Report an issue: GitHub.

Appendix: source

Thrown at server/utils/AiProviders/deepseek/index.js:13

const { NativeEmbedder } = require("../../EmbeddingEngines/native");
const {
  LLMPerformanceMonitor,
} = require("../../helpers/chat/LLMPerformanceMonitor");
const { MODEL_MAP } = require("../modelMap");
const {
  handleDefaultStreamResponseV2,
} = require("../../helpers/chat/responses");

class DeepSeekLLM {
  constructor(embedder = null, modelPreference = null) {
    if (!process.env.DEEPSEEK_API_KEY)
      throw new Error("No DeepSeek API key was set.");
    this.className = "DeepSeekLLM";
    const { OpenAI: OpenAIApi } = require("openai");

    this.openai = new OpenAIApi({
      apiKey: process.env.DEEPSEEK_API_KEY,
      baseURL: "https://api.deepseek.com/v1",
    });
    this.model =
      modelPreference || process.env.DEEPSEEK_MODEL_PREF || "deepseek-chat";
    this.limits = {
      history: this.promptWindowLimit() * 0.15,
      system: this.promptWindowLimit() * 0.15,
      user: this.promptWindowLimit() * 0.7,
    };

    this.embedder = embedder ?? new NativeEmbedder();
    this.defaultTemp = 0.7;
    this.log(

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