What languages can I write functions in?

The node offers two runtimes. A JavaScript runtime uses fast QuickJS execution for quick data transformations and simple logic, and a Python runtime runs in a full sandbox for heavier work.

Can I install packages or use a GPU?

Yes, with the Python runtime. It lets you list pip requirements, configure CPU cores and memory, choose a GPU type and count, set a timeout, and pick a preferred region. The JavaScript runtime is for lightweight logic without external dependencies.

How do I pass data into a serverless function?

You define named function inputs on the node, and each input takes a value reference from an upstream node such as {{node-id.field}}. Inside the function body those names are available as variables.

When should I use this node instead of a dedicated integration?

Use it whenever you need custom logic that no existing node provides, most often to transform or filter data between two nodes. For talking to an external API, the HTTP Request node is usually the better fit.

Is the function code sandboxed?

Yes. JavaScript runs in an isolated QuickJS engine, and Python runs in a sandboxed environment with configurable hardware limits. This keeps custom code contained while still letting it do real work in the workflow.

Hermes is an open agent based on Nous Research’s Hermes models. NoClick runs it for you and adds your connected apps as tools.

How do I give Hermes access to an app?

Connect the app's integration node to the agent's tools handle and pick the operations to expose. Each becomes a callable tool.

Do I need my own infrastructure?

No. The harness runs in a hosted sandbox and NoClick handles credentials for the apps you connect.

Can Hermes use multiple apps at once?

Yes. Wire in several integrations and the agent can use them together in a single run.

Connect Hermes to Code

Point an AI agent at a serverless function as a tool and it runs its own code instead of handing you a snippet to paste. It can execute a JavaScript or Python function on demand, calling it as a tool to transform data, run a calculation, or reshape a payload mid-task. Wire it into a hosted coding agent in NoClick and it can write a function, run it, and use the result without leaving the task.

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Opens a workflow with 2 tools ready to use.

What happens next

Set up in minutes

The open button drops you into a guided setup. It asks exactly this, nothing else:

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 Code
A preset of real Code operations. Each one becomes a tool the agent can call, and it can't touch anything outside the list.
Connect Code
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
$hermes mcp add noclick --url https://mcp.noclick.app/s/<your-link>
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.

Exact capabilities

Tools Hermes gets

Pick the operations you want and each becomes a tool the agent can call directly while it works.

Code

2 tools

Run Javascript Function

JavaScript Runtime - Fast QuickJS execution.

Run Python Function

Python Runtime — isolated compute with GPU & packages.

Starting points

What you can build

Transform a messy API response into a clean object that downstream nodes can use directly.

Run a quick JavaScript calculation, such as scoring a lead or computing a date offset, between two other nodes.

Filter or reshape an array of records before passing it to a node that processes them one by one.

Use the Python runtime with pip packages to do heavier data processing that JavaScript cannot handle.

Implement custom branching logic that decides which path a workflow should take based on multiple fields.

Run a GPU-backed Python function for a compute-heavy task like model inference inside a larger workflow.

Meet the runner

About Hermes

Hermes is an open agent built on Nous Research’s Hermes models. NoClick runs it hosted and connects your apps to it as tools, so it can do real work across your systems. Wire an integration into the agent and Hermes can use that app’s operations directly while it reasons through a task. It is a strong pick when you want an open-model agent with genuine tool access.

Built on open Hermes models

Capable general reasoning

Flexible, open-model foundation

Hosted with apps wired in as tools

Good to know