Connect Hermes to Langfuse
Set up in minutes
Choose where it runs
On your computer through your own Hermes, or hosted in the cloud. The rest of setup adapts to your choice:
Pick what it can do in Langfuse
A preset of real Langfuse operations. Each one becomes a tool the agent can call, and it can't touch anything outside the list.
Connect Langfuse
One sign-in. The agent acts through your account, scoped to the operations you picked.
Add your personal MCP link
The last step mints a private MCP URL for this agent and walks you through exactly this, with your real link filled in. The page flips to Connected the moment your Hermes first calls in. Hermes connects when it next starts a session.
1. Run this in your terminal
2. Answer no when asked if the server requires authentication — the link itself is the key
<your-link> is your personal server URL — setup mints it for you.
Tools Hermes gets
Langfuse
19 toolsRead the project associated with this project API key.
List prompt metadata, versions and labels.
Get a prompt, optionally selecting its version or label.
Create a text prompt or a new version of an existing prompt.
Replace a prompt version's deployment labels; labels move between versions.
List evaluation datasets.
Get dataset metadata by name.
Create an evaluation dataset.
List dataset items, optionally filtering by dataset and source trace.
Get one dataset item.
Create an item or update the supplied project-unique item ID.
Irreversibly delete a dataset item and all its run items.
Read observation rows using the current v2 cursor API.
Read evaluation scores using the current v3 cursor API.
Submit one numeric trace score for asynchronous processing.
Delete a score by its Langfuse ID.
List comments in the project.
Get a comment by ID.
Attach a comment to a trace, observation, session or prompt.
About Hermes
Frequently asked questions
More ways to connect
More tools for Hermes
Use Langfuse with other agents
Open your Hermes agent in one click.
NoClick runs Hermes for you with Langfuse wired in as tools. Connect your account and run.