Service Nodes

A service node represents a service that is connected to Requence. When execution reaches this node, it dispatches a message to the service and waits for a response.

When a service defines a configuration schema, the configuration values must be provided in the visual editor.

Note

All schemas used by the bound service version — input, configuration, and output schemas, including any deeply referenced schemas — are automatically available as types inside logic nodes. This allows you to write fully typed transformations around service calls without any additional setup.

Settings

Each service node has three configurable settings, accessible via the settings button (gear icon) on the node:

• Time to respond — maximum time in milliseconds the node will wait for a response before failing. Defaults to infinite.
• Retry — number of times the node will automatically retry after a failure. Defaults to none.
• Retry delay — delay in milliseconds between retry attempts. Defaults to none.

How Defaults Work

Settings are resolved using a three-tier system. Each property is resolved independently:

1. Manual value — if you explicitly set a value on the node, it takes highest priority
2. Version default — if the service version defines a default for this property, it is used
3. Global default — no retry, infinite time to respond

The settings button on the node highlights when you have made manual overrides. When a node uses version or global defaults, the button stays unhighlighted and the default values appear as placeholders in the settings popover.

Tip

If a service should always be retried, configure the retry defaults on the service version itself. Every node using that version will inherit those defaults automatically — no need to configure each node individually.

Interaction with Version Changes

When you switch a service node to a different version:

• Manual overrides are preserved — your explicit values are never overwritten
• Non-manual properties pick up the new version’s defaults automatically