Try

Wrap nodes in an error-handling boundary: catch any failure, retry, and route success/error.

Finding it in the library

Search the builder's node library for Try (it lives under Error Handling). A single click opens the in-editor docs panel shown here — description, ports, and every property, without leaving the canvas. Double-click (or drag) to add it to the workflow.

Library capture pending — regenerate with npm run shots:nodes.

Wired up in the builder

Try in a real, runnable flow — captured live from the Studio editor, exactly as it looks on your canvas. This is the same workflow used for the example input & output below.

Canvas capture pending — regenerate with npm run shots:nodes.

How it’s configured

The node’s Configure panel as it opens in the builder when you select the step — every setting laid out with real values. Click any field to edit it.

Config capture pending — regenerate with npm run shots:nodes. See the full property reference below.

Ports

Ports are the node’s contract with its neighbours. In the editor a port label renders bold when wired and italic when optional; ◈ ports accept attachment carriers rather than data wires.

How data flows through it

Try consumes the content of the incoming envelope — when it is fed directly by a trigger, the trigger’s wrapper is unwrapped at the node boundary so the node sees the actual data, not the metadata shell. Its output becomes the payload for the next node, while the envelope (trace ids, correlation, binary refs) rides along untouched. In the Runs view you always see the whole envelope for both sides of this node.

Expressions in the config

None of this node’s properties are string-typed, so {{ }} expressions don’t apply here — JSON- and code-typed fields are always taken literally.

Build it with AI

Every node in this reference is reachable through Flowdrome’s AI Copilot and the MCP tools — say what you want, and the graph surgery happens server-side. Node types resolve fuzzily, so the catalog label (Try) works as well as the exact type id (error-handling.try).

In the Copilot panel (or any connected AI):

add a try node after the trigger

As a step in a create_chain_workflow call:

{"type":"Try","config":{}}

curl -s -X POST http://localhost:48170/mcp -H "content-type: application/json" -d '{ "jsonrpc": "2.0", "id": "1", "method": "tools/call", "params": { "name": "add_node", "arguments": { "workflowId": "<id>", "type": "Try" } } }'

Example input & output

Captured from a real test run of the workflow above — this is what you see in the run data panel after pressing Test workflow.

The framed member step throws on purpose; Try retries it, catches the failure, and emits it on the error port.

On this run the node emitted on port error.

{
  "exception": {
    "message": "Failing step: smoke-boom",
    "code": "NODE_ERROR",
    "node": {
      "id": "boom",
      "label": "Failing step",
      "type": "utility.javascript"
    },
    "count": 1,
    "errors": [
      {
        "nodeId": "boom",
        "nodeLabel": "Failing step",
        "nodeType": "utility.javascript",
        "code": "NODE_ERROR",
        "message": "smoke-boom"
      }
    ]
  }
}

Property reference

Every setting, with its type and default — the same fields shown configured in the panel above.

Related nodes

The rest of the Error Handling group — the same folder you’d scan in the editor’s library.

• Error Trigger Fires when any node in the run fails unhandled — runs its downstream branch as a recovery phase of the same (s
• Stop and Error Unconditionally fails the flow with a configured error code and message — catchable by an enclosing Try, other

This page is generated from the node registry by gen-node-docs.mjs on every site build — ports, properties, defaults and visibility rules cannot drift from the code. The screenshots and example data are captured from a live Flowdrome by npm run shots:nodes and npm run gen:examples.