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How to keep the legacy Codex DeepSeek subagent working with Mixagents

Run the older DeepSeek subagent on Codex 0.148.x or earlier.

Short answer: Confirm your Codex version is 0.148.x or earlier; then open packages/codex-deepseek-subagent/README.md and follow its install and use section; read packages/codex-deepseek-subagent/SECURITY.md to understand the security boundary. All steps.

Who it is forA developer whose Codex install is still on 0.148.x or earlier and who already relies on the older DeepSeek subagent setup.

The problemThe README says the old DeepSeek subagent only applies to Codex 0.148.x and earlier, and that Codex 0.149.0 and later should use the broker instead.

The outcomeA working legacy DeepSeek subagent on an older Codex build, with a clear plan to move to the broker when the Codex version changes.

What you need first

  • Codex with plugin support (the README says the broker is used from Codex 0.149.0 onward)
  • Accounts and credentials for each third-party provider you configure, billed separately from any ChatGPT or OpenAI subscription
  • Read SECURITY.md before install, since task content, file content and tool results may be sent to the configured provider

Steps

  1. Confirm your Codex version is 0.148.x or earlier
  2. Open packages/codex-deepseek-subagent/README.md and follow its install and use section
  3. Read packages/codex-deepseek-subagent/SECURITY.md to understand the security boundary
  4. Ask Codex to run one DeepSeek subagent task and check the output
  5. Plan to switch to the MixAgents Broker when you upgrade Codex to 0.149.0 or later

Prompt for your agent

Using the repo Utopia-V/mixagents, install the legacy codex-deepseek-subagent package for a Codex build of version <version> that is 0.148.x or earlier. Run one subagent task on <task description> and return the output. Verify the Codex version first and confirm the security boundary in packages/codex-deepseek-subagent/SECURITY.md.

Caveat. The README marks this package as legacy and says Codex 0.149.0 and later should use MixAgents Broker instead.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for Utopia-V/mixagents and "Keep the legacy Codex DeepSeek subagent working"

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claude mcp add --transport http deduped https://dedupedai.com/mcp

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