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71 changes: 71 additions & 0 deletions blog/toolhive-updates/2026-05-11-updates.mdx
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---
title: Plug ToolHive into your existing Redis setup, and CIMD in the CLI
sidebar_label: 'May 11: Redis flexibility and CIMD in the CLI'
description:
Run the embedded auth server on whichever Redis your platform already uses,
and authenticate MCP clients without per-client registration via CIMD.
---

This week, the embedded auth server runs on the Redis topology your platform
already uses (standalone, cluster, or Sentinel), and the ToolHive CLI
authenticates MCP clients without dynamic client registration.

{/* truncate */}

## Plug ToolHive into your existing Redis setup

Whether your platform runs a managed Redis service (which typically handles HA
transparently) or self-hosts Redis in one of several topologies, the embedded
authorization server can now sit on top of it:

- **Standalone Redis** for simpler deployments, including managed Redis services
that handle high availability for you.
- **Redis Cluster** for sharded scale-out across multiple nodes, common in both
managed and self-hosted deployments.
- **Redis Sentinel** for HA with automatic failover when you self-host Redis
directly.

No more shoehorning a Sentinel topology into a cluster that doesn't otherwise
need it, or skipping the embedded auth server because your standard Redis
doesn't match. Configure the `storage` block on your `MCPExternalAuthConfig` to
match the topology you already run. See
[Redis session storage](/toolhive/guides-k8s/redis-session-storage#configure-mcpexternalauthconfig)
for the YAML and TLS examples.

## ToolHive CLI now supports CIMD
Comment thread
danbarr marked this conversation as resolved.

The MCP authentication spec is shifting from Dynamic Client Registration (DCR)
to the
[Client ID Metadata Document](https://datatracker.ietf.org/doc/draft-parecki-oauth-client-id-metadata-document/)
(CIMD) pattern as the preferred way for clients to identify themselves to
upstream identity providers. The ToolHive CLI (`thv`) now supports CIMD, so your
clients stay aligned with the upstream direction.

If you've watched your IdP fill up with one-off client registrations for
short-lived MCP agents and developer environments, this is a direct fix. Instead
of registering each client with the IdP up front, `thv` presents a hosted
metadata document describing itself, and the IdP verifies it on the fly.

Use it when:

- You're running a short-lived or stateless MCP client and don't want a
permanent registration to manage.
- You want to identify a class of clients (for example, every developer on your
team) without registering each one individually.
- Your IdP supports the draft CIMD spec.

Support for CIMD in the embedded authorization server is still in development;
this release lands it in the local CLI experience first.

## Getting started

For detailed release notes, check the project repositories:

- [ToolHive Runtimes](https://github.com/stacklok/toolhive/releases) (CLI and
Kubernetes Operator)
- [ToolHive Desktop UI](https://github.com/stacklok/toolhive-studio/releases)
- [ToolHive Cloud UI](https://github.com/stacklok/toolhive-cloud-ui/releases)
- [ToolHive Registry Server](https://github.com/stacklok/toolhive-registry-server/releases)

You can find all ToolHive documentation on the
[Stacklok documentation site](/toolhive).