What is the main functional difference between Codex Subagent and Agent MCP?

Codex Subagent is categorized under Coding Agents and uses a local stdio subprocess. Agent MCP belongs to Coding Agents and uses a remote HTTP/SSE transport. Pick Codex Subagent for coding agents work and Agent MCP for coding agents.

How do I install Codex Subagent or Agent MCP in Claude Desktop, Cursor, or Windsurf?

Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.

Are Codex Subagent and Agent MCP free to use, or do they require API keys?

Codex Subagent is bring-your-own-key: usage is billed by the API provider you supply a key for. Agent MCP is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.

Can I run both Codex Subagent and Agent MCP at the same time in my AI client?

Yes. MCP clients support multiple servers: add codex-subagent and rinadelph-agent-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Codex Subagent has a quality signal of 52/100 (Good) with 0 views, 0 installs and 0 GitHub stars. Agent MCP has 60/100 (Good) with 5 views, 0 installs and 1,303 GitHub stars.

Codex Subagent vs Agent MCP — MCP Server Comparison

Codex Subagent vs Agent MCP — MCP Server Comparison | AllMCPs

Feature & specification comparison

Rows where the two servers differ are marked.

Spec	C Codex Subagent	Agent MCP
Category	Coding Agents	Coding Agents
Quality signal	52/100 · Good	60/100 · Good
Install command	Confirmed	Confirmed
Transport	Local subprocess (stdio)	Remote HTTP/SSE
Auth	Not declared	API key required
Pricing	BYOK (pay the provider)	BYOK (pay the provider)
Required env vars	None listed	`OPENAI_API_KEYAGENT_MCP_HOSTAGENT_MCP_PORTAGENT_MCP_LOG_LEVELAGENT_MCP_PROJECT_DIRAGENT_MCP_MAX_AGENTS`
Verified owner	Community listing	Community listing
GitHub stars	0	1,303
Directory activity	0 views 0 installs 0 upvotes	5 views 0 installs 0 upvotes
Tools	8	12
Full listing	View Codex Subagent	View Agent MCP

Ready-to-paste client configs

Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.

Codex Subagent

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "codex-subagent": {
      "command": "npx",
      "args": [
        "-y",
        "codex-subagent-mcp"
      ]
    }
  }
}

Agent MCP

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "rinadelph-agent-mcp": {
      "url": "http://localhost:8000/mcp"
    }
  }
}

Codex Subagent vs Agent MCP

Which MCP server should you choose?

C
Choose Codex Subagent when

Choose Agent MCP when

Feature & specification comparison

Tools & capabilities

Codex Subagent tools 8

Agent MCP tools 12

Ready-to-paste client configs

Codex Subagent

Agent MCP

Frequently asked questions

CChoose Codex Subagent when

Choose Agent MCP when

Codex Subagent tools 8

Agent MCP tools 12

Codex Subagent

Agent MCP

Frequently asked questions

What is the main functional difference between Codex Subagent and Agent MCP?

How do I install Codex Subagent or Agent MCP in Claude Desktop, Cursor, or Windsurf?

Are Codex Subagent and Agent MCP free to use, or do they require API keys?

Can I run both Codex Subagent and Agent MCP at the same time in my AI client?

Which MCP server has higher directory engagement and quality ratings?

Popular comparisons with Codex Subagent

Popular comparisons with Agent MCP

C
Choose Codex Subagent when