{Suksham-sharma} ffddff40ab feat(providers): add DeepSeek as built-in provider

- Add buildDeepSeekProvider() with deepseek-chat and deepseek-reasoner models
- Register in resolveImplicitProviders() for auto-discovery via DEEPSEEK_API_KEY
- Add DEEPSEEK_API_KEY to env var mapping in model-auth.ts
- Add unit tests for provider builder and implicit resolution
- Add documentation at docs/providers/deepseek.md

Closes #3393

2026-01-29 16:08:38 +05:30

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summary

read_when

Configure DeepSeek API (Chat + Reasoner models)

You want to use DeepSeek models

You need to configure DeepSeek API key

You want cost-effective reasoning models

DeepSeek

DeepSeek provides cost-effective AI models with OpenAI-compatible endpoints. Moltbot supports both the Chat and Reasoner models.

Models

Model ID	Name	Reasoning	Context
`deepseek-chat`	DeepSeek Chat	No	64K
`deepseek-reasoner`	DeepSeek Reasoner	Yes	64K

Quick start

moltbot onboard --auth-choice deepseek-api-key

Or set the environment variable:

export DEEPSEEK_API_KEY="sk-..."
moltbot models set deepseek/deepseek-chat

Config snippet

{
  env: { DEEPSEEK_API_KEY: "sk-..." },
  agents: {
    defaults: {
      model: { primary: "deepseek/deepseek-chat" }
    }
  }
}

Using the Reasoner model

For tasks requiring chain-of-thought reasoning:

{
  agents: {
    defaults: {
      model: { primary: "deepseek/deepseek-reasoner" }
    }
  }
}

Notes

DeepSeek uses an OpenAI-compatible API at https://api.deepseek.com
Get your API key from platform.deepseek.com
Pricing is very competitive compared to other providers

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