Codex With Custom Tools And MCP

End-of-lesson check

15 questions · take it digitally for instant feedback at tendril.neural-forge.io/learn/quiz/end-codex-mcp-tools-creators

1. What is the core idea behind "Codex With Custom Tools And MCP"?

   1. Codex's real power shows when you connect it to your own tools — internal APIs, datastores, ticketing systems — usually via Model Context Protocol.
   2. egress allowlist
   3. Your repo has uncommitted state you want the agent to see
   4. feature flag

2. Which term best describes a foundational idea in "Codex With Custom Tools And MCP"?

   1. custom tool
   2. MCP
   3. tool schema
   4. authorization

3. A learner studying Codex With Custom Tools And MCP would need to understand which concept?

   1. MCP
   2. tool schema
   3. custom tool
   4. authorization

4. Which of these is directly relevant to Codex With Custom Tools And MCP?

   1. MCP
   2. custom tool
   3. authorization
   4. tool schema

5. Which of the following is a key point about Codex With Custom Tools And MCP?

   1. A tool advertises a schema — name, description, input parameters
   2. The agent reads the schema and decides when to invoke
   3. Each call returns structured output the agent can reason over
   4. Auth happens at the MCP server, not in the prompt

6. Which of these does NOT belong in a discussion of Codex With Custom Tools And MCP?

   1. egress allowlist
   2. A tool advertises a schema — name, description, input parameters
   3. The agent reads the schema and decides when to invoke
   4. Each call returns structured output the agent can reason over

7. Which statement is accurate regarding Codex With Custom Tools And MCP?

   1. For each, write a one-line description and the input parameters
   2. Pick the most-likely-safe one and stand up an MCP server for it
   3. List the three tools you wish your AI had access to
   4. Watch what Codex does with it — note what was useful, what was dangerous

8. Which of these does NOT belong in a discussion of Codex With Custom Tools And MCP?

   1. Pick the most-likely-safe one and stand up an MCP server for it
   2. egress allowlist
   3. List the three tools you wish your AI had access to
   4. For each, write a one-line description and the input parameters

9. What is the key insight about "Build narrow tools, not god tools" in the context of Codex With Custom Tools And MCP?

   1. Three small tools — get_ticket, comment_on_ticket, close_ticket — beat one giant 'do anything to a ticket' tool.
   2. egress allowlist
   3. Your repo has uncommitted state you want the agent to see
   4. feature flag

10. What is the key insight about "Authorization is not a prompt" in the context of Codex With Custom Tools And MCP?

    1. egress allowlist
    2. Never rely on prompting the model 'do not delete production data'.
    3. Your repo has uncommitted state you want the agent to see
    4. feature flag

11. What is the key insight about "From the community" in the context of Codex With Custom Tools And MCP?

    1. egress allowlist
    2. Your repo has uncommitted state you want the agent to see
    3. Developer-forum posts highlight a practical detail that catches new users off guard: Codex stores MCP configuration in c…
    4. feature flag

12. Which statement accurately describes an aspect of Codex With Custom Tools And MCP?

    1. egress allowlist
    2. Your repo has uncommitted state you want the agent to see
    3. feature flag
    4. Default Codex has shell, file system, and HTTP. It does not know your Linear, your Datadog, your internal docs API, or your billing system.

13. What does working with Codex With Custom Tools And MCP typically involve?

    1. The big idea: Codex without your tools is a generic engineer. Codex with your tools is a teammate.
    2. egress allowlist
    3. Your repo has uncommitted state you want the agent to see
    4. feature flag

14. Which best describes the scope of "Codex With Custom Tools And MCP"?

    1. It is unrelated to tools workflows
    2. It focuses on Codex's real power shows when you connect it to your own tools — internal APIs, datastores, ticketin
    3. It applies only to the opposite beginner tier
    4. It was deprecated in 2024 and no longer relevant

15. Which section heading best belongs in a lesson about Codex With Custom Tools And MCP?

    1. egress allowlist
    2. Your repo has uncommitted state you want the agent to see
    3. The MCP shape
    4. feature flag