Connect Sanity to Hermes
Give Hermes governed access to Sanity’s 55 tools through Runlayer, with identity, policy, scanning, and audit on every call.
Set up
Add Sanity to Hermes in four steps
Admins approve the server once. Everyone in Hermes then gets it through the same governed connection.
- 1
Add Sanity to Runlayer
Sanity isn’t in the Runlayer catalog yet, so an admin adds it by its MCP server URL.
Adding a connector manually - 2
Connect Hermes to Runlayer
Users add the Runlayer Plugin to Hermes by following Runlayer’s setup guide. Hermes reaches Sanity’s 55 tools through the Runlayer Plugin’s search and execute tools instead of listing each one.
Hermes setup guide - 3
Sign in to Sanity
Sign in the way Sanity requires. Runlayer holds the credentials so they stay out of the client’s configuration.
- 4
Use Sanity from Hermes
Sanity’s approved tools appear in Hermes. Every call is checked against policy and recorded.
Tools
55 Sanity tools in Hermes
Runlayer policy decides which of these Hermes users can call.
Get UI context
Returns UI enrichment data for widgets.
Add cors origin
Adds CORS origin(s) to allow client-side requests to a Sanity project
Assets upload status
Retrieve the status and result of your asset upload by operationId.
Delete cors origins
Deletes a CORS origin from a Sanity project
List cors origins
Lists all CORS origins configured for a Sanity project
Create dataset
Creates a new dataset with specified name and access settings
Create documents
Create one or more draft documents by directly providing structured content.
Create project
Creates a new Sanity project and initializes it with a dataset and API tokens
Control
What Runlayer can see and stop in Hermes
Some controls apply to every client at the gateway. Others depend on what Hermes exposes to Runlayer.
Gateway policy (available)
Every Sanity call from Hermes passes through Runlayer, where your policies can allow, alert, mask, or block it.
Audit trail (available)
Each call is recorded with the user, Hermes 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 before Hermes runs it.
Block output after it runs (available)
Runlayer can block a tool’s output in Hermes and show a message in its place.
Redact output in place (not available)
Hermes cannot take masked output, so Runlayer can block a tool’s output but not mask it. The gateway still applies policy to the call.
In Hermes
- Hermes can replace blocked tool output with a message, but its after-call event is for monitoring only.
Frequently asked questions
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