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Connect Sentry to Codex

Give Codex governed access to Sentry’s 16 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Codex setup guide

Set up

Add Sentry to Codex in four steps

Admins approve the server once. Everyone in Codex then gets it through the same governed connection.

  1. 1

    Approve Sentry in Runlayer

    Add Sentry from the catalog and choose who can use it and which of its tools are allowed.

  2. 2

    Connect Codex to Runlayer

    Runlayer’s CLI adds the Runlayer Plugin to Codex’s local plugin marketplace, and users then enable it in Codex. With direct tool listing turned on for your deployment, Sentry’s 16 tools show up in Codex’s own tool list (Codex 0.122 or newer, installed through the Runlayer CLI).

    Codex setup guide
  3. 3

    Sign in to Sentry

    Sign in the way Sentry requires. Runlayer holds the credentials so they stay out of the client’s configuration.

  4. 4

    Use Sentry from Codex

    Sentry’s approved tools appear in Codex. Every call is checked against policy and recorded.

Tools

16 Sentry tools in Codex

Runlayer policy decides which of these Codex users can call. 4 read data only.

  • Analyze issue with seer

    Use Seer to analyze production errors and get detailed root cause analysis with specific code fixes.

  • Execute Sentry tool

    Execute an available Sentry MCP tool discovered through search_sentry_tools.

  • Find dropped events

    Find events dropped before they were stored in Sentry — ground-truth data-fidelity information about what was and wasn't captured.

  • Find organizations

    Find organizations that the user has access to in Sentry.

  • Find projects

    Find projects in Sentry.

  • Get Sentry resource

    Fetch a Sentry resource by URL, or by resourceType plus resourceId.

  • Search errors

    Search Sentry error events: exceptions and crashes with stack traces.

  • Search events

    Search Sentry events and replays.

See all 16 Sentry tools

Control

What Runlayer can see and stop in Codex

Some controls apply to every client at the gateway. Others depend on what Codex exposes to Runlayer.

  • Gateway policy (available)

    Every Sentry call from Codex passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, Codex as the client, the tool, and the policy and scanner decisions.

  • Client hooks (available)

    Capture supported prompts, reasoning, local and MCP tool calls, responses, and scanner decisions in real time.

  • Stop a call before it runs (available)

    Runlayer can deny a tool call or permission request before Codex runs it.

  • Block output after it runs (available)

    Runlayer can block a tool’s output before Codex’s model sees it.

  • Redact output in place (not available)

    Codex cannot take masked output, so Runlayer can block a tool’s output but not mask it. The gateway still applies policy to the call.

Frequently asked questions

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