WebSearch tool, Fireworks runs the search server-side and returns the results. You don’t set up an MCP server or a search service. Connect the harness through Coding Harnesses.
Native web search works with any Fireworks model and a standard
fw_... key, with or without Nexus Auto.
Upgrade from the retired MCP
Versions before 0.9.7 installed thefireworks-websearch MCP for Claude Code. That MCP is retired, because Fireworks now handles Claude Code’s native search tools server-side.
web_search = "disabled" line that version 0.9.6 wrote into the Codex config. Restart Claude Code and Codex afterward.