Connect Context7 to Codex
Give Codex governed access to Context7’s 2 tools through Runlayer, with identity, policy, scanning, and audit on every call.
Set up
Add Context7 to Codex in four steps
Admins approve the server once. Everyone in Codex then gets it through the same governed connection.
- 1
Approve Context7 in Runlayer
Add Context7 from the catalog and choose who can use it and which of its tools are allowed.
- 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, Context7’s 2 tools show up in Codex’s own tool list (Codex 0.122 or newer, installed through the Runlayer CLI).
Codex setup guide - 3
Sign in to Context7
Sign in the way Context7 requires. Runlayer holds the credentials so they stay out of the client’s configuration.
- 4
Use Context7 from Codex
Context7’s approved tools appear in Codex. Every call is checked against policy and recorded.
Tools
2 Context7 tools in Codex
Runlayer policy decides which of these Codex users can call. 2 read data only.
Query docs
Retrieves and queries up-to-date documentation and code examples from Context7 for any programming library or framework.
Resolve library ID
Resolves a package/product name to a Context7-compatible library ID and returns matching libraries.
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 Context7 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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