Overview

Lightweight, zero-dependency utility components for generating random values, computing hashes, and providing common constants.

RANDOM_UUID

RANDOM_UUID Utility Workflow Component

Generate a cryptographically random UUID v4.

Config

None.

Inputs

None.

Outputs

SDK example

import { WorkspaceClient, ComponentModule } from '@zafeguard/caller-sdk';
const workspace = new WorkspaceClient({ apiKey: process.env.ZAFEGUARD_API_KEY! });

const result = await workspace.call(ComponentModule.RANDOM_UUID, {}).promise();
console.log(result.uuid); // "a4c2e8f1-39b0-4d7a-83c6-1b5f2e9d0c77"

REST (with waitForMs for inline result):

curl -X POST https://api.zafeguard.com/v1/sdk/components \
  -H "X-Api-Key: ws_..." \
  -H "X-Sdk-Timestamp: <timestamp>" \
  -H "X-Sdk-Signature: <signature>" \
  -H "Content-Type: application/json" \
  -d '{ "module": "RANDOM_UUID", "input": {}, "config": {}, "waitForMs": 5000 }'

Without waitForMs, the response returns status: "CREATED" immediately — the component runs asynchronously. See Authentication → for the required signing headers.

RANDOM_HEX

RANDOM_HEX Utility Workflow Component

Generate a cryptographically random hex string. Useful as a nonce, salt, or random seed.

Config

Inputs

None.

Outputs

SDK example

const result = await workspace.call(ComponentModule.RANDOM_HEX, {}).promise();
console.log(result.hex); // "7f3a9c"

RANDOM_NUMBER

RANDOM_NUMBER Utility Workflow Component

Generate a cryptographically random integer.

Config

Inputs

None.

Outputs

SDK example

const result = await workspace.call(ComponentModule.RANDOM_NUMBER, {}).promise();
console.log(result.number); // 1847392615

ERC20_ABI_CONSTANT

ERC20_ABI_CONSTANT Utility Workflow Component

Returns the standard ERC-20 ABI as a constant. Eliminates the need to hardcode it in every workflow that interacts with ERC-20 tokens.

Config

None.

Inputs

None.

Outputs

Common pattern

ERC20_ABI_CONSTANT
        │ abi
        ▼
BUILD_EVM_CALLDATA (function: "transfer", args: [to, amount])
        │ calldata
        ▼
BUILD_EVM_TRANSACTION

EVM_ZERO_ADDRESS_CONSTANT

EVM_ZERO_ADDRESS_CONSTANT Utility Workflow Component

Returns the EVM zero address (0x0000000000000000000000000000000000000000). Used as the tokenAddress for native ETH balance checks, or as the null address in ABI encoding.

Config

None.

Inputs

None.

Outputs

Common pattern

EVM_ZERO_ADDRESS_CONSTANT
        │ address
        ▼ tokenAddress
GET_EVM_ACCOUNT_BALANCE  (checks native ETH balance)

OBJECT_BUILDER

OBJECT_BUILDER Utility Workflow

Composes an object from dynamic input ports. Every connected input becomes a property of the output object, named after the input port. Useful for shaping data to pass into the next component or to return from a workflow.

Inputs

Dynamic — connect any number of upstream outputs to named input ports.

Outputs

JSON_FORMATTER

JSON_FORMATTER Utility Workflow

Returns a configured JSON template, with {{variable}} placeholders substituted from the dynamic inputs. Use it as a constant emitter for structured payloads (API request bodies, on-chain calldata templates) where some fields come from upstream components.

Config

Inputs

Dynamic — each connected input port supplies a value for one {{key}} placeholder in the template.

Outputs

Example

config.value: { "to": "{{recipient}}", "amount": "{{amount}}" }
inputs: { recipient: "0xabc...", amount: "1000000" }
output.value: { "to": "0xabc...", "amount": "1000000" }