x402serps logox402serps

Web search in Codex CLI with x402serps

Codex reads MCP servers from ~/.codex/config.toml, shared by the CLI and IDE extension. Streamable HTTP servers take a url, static http_headers, and an optional bearer_token_env_var.

Free trial

[mcp_servers.x402serps]
url = "https://x402serps.com/api/mcp"
http_headers = { "X-Trial" = "1" }

With card credits

[mcp_servers.x402serps]
url = "https://x402serps.com/api/mcp"
bearer_token_env_var = "X402SERPS_KEY"

Then export X402SERPS_KEY=xs_YOUR_KEY before starting Codex. Codex sends it as Authorization: Bearer …. Run /mcp in Codex to check the tools.

Pay per call with x402 instead: tool calls without a trial header or key return the x402 payment requirements, which an x402-aware client can pay in USDC on Base or Solana. Search is $0.004 a call. Buy a credit key on the pricing page.

Pricing · Docs · MCP · Integrations · Help

Related

Claude Code setupRead more →Gemini CLI setupRead more →OpenCode setupRead more →Goose setupRead more →Claude Desktop setupRead more →ChatGPT setupRead more →