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feat: add MCP config and system prompt support for Codex local mode

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Implements MCP server configuration and developer instructions support in
Codex local mode, bringing it to parity with remote mode.

Key additions:
- buildMcpServerConfigArgs() and buildDeveloperInstructionsArg() utilities
  to construct -c config arguments for passing MCP servers and instructions
  to the Codex CLI at runtime
- TITLE_INSTRUCTION for Codex to call hapi__change_title to update chat
  session titles dynamically
- Codex local mode now starts hapi MCP bridge server and passes both MCP
  configuration and developer instructions to Claude, enabling full feature
  parity with remote mode

Files changed:
- New: codexMcpConfig.ts (utilities), systemPrompt.ts (prompt definition),
  codexMcpConfig.test.ts (comprehensive tests)
- Updated: codexLocal.ts (accepts mcpServers, builds config args),
  codexLocalLauncher.ts (starts hapi server, passes config),
  codexStartConfig.ts (imports TITLE_INSTRUCTION)
This commit is contained in:
weishu
2026-01-05 18:38:58 +08:00
parent 45822afa49
commit c50621e85a
8 changed files with 214 additions and 7 deletions
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cli/src/codex/codexLocal.ts
+11
View File
@@ -1,6 +1,8 @@
import { logger } from '@/ui/logger';
import { restoreTerminalState } from '@/ui/terminalState';
import { spawnWithAbort } from '@/utils/spawnWithAbort';
import { buildMcpServerConfigArgs, buildDeveloperInstructionsArg } from './utils/codexMcpConfig';
import { codexSystemPrompt } from './utils/systemPrompt';
/**
* Filter out 'resume' subcommand which is managed internally by hapi.
@@ -29,6 +31,7 @@ export async function codexLocal(opts: {
sandbox?: 'read-only' | 'workspace-write' | 'danger-full-access';
onSessionFound: (id: string) => void;
codexArgs?: string[];
mcpServers?: Record<string, { command: string; args: string[] }>;
}): Promise<void> {
const args: string[] = [];
@@ -45,6 +48,14 @@ export async function codexLocal(opts: {
args.push('--sandbox', opts.sandbox);
}
// Add MCP server configuration
if (opts.mcpServers && Object.keys(opts.mcpServers).length > 0) {
args.push(...buildMcpServerConfigArgs(opts.mcpServers));
}
// Add developer instructions (system prompt)
args.push(...buildDeveloperInstructionsArg(codexSystemPrompt));
if (opts.codexArgs) {
const safeArgs = filterResumeSubcommand(opts.codexArgs);
args.push(...safeArgs);