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khadnikhadni
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correct EVM log trigger requirements (#3413)
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‎src/content/cre/llms-full-ts.txt‎

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@@ -15186,7 +15186,7 @@ export async function main() {
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# SDK Reference: EVM Log Trigger
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Source: https://docs.chain.link/cre/reference/sdk/triggers/evm-log-trigger-ts
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Last Updated: 2026-01-26
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Last Updated: 2026-01-28
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The EVM Log Trigger fires when a specific log (event) is emitted by an onchain smart contract.
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const evmClient = new EVMClient(network.chainSelector.selector)
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// Basic log trigger for a contract address
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const trigger = evmClient.logTrigger({
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addresses: [hexToBase64("0x123...abc")],
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})
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// With topics for event filtering
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// Create a log trigger with address and event signature
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const transferEventHash = keccak256(toBytes("Transfer(address,address,uint256)"))
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const trigger = evmClient.logTrigger({
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| Field | Type | Description |
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| ------------ | --------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `addresses` | `string[]` | **Required.** A list of contract addresses to monitor. **Must be base64 encoded** using `hexToBase64()`. At least one address is required. |
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| `topics` | `TopicValues[]` | Optional. An array to filter event topics. The first element contains event signatures, and the next three elements contain indexed argument values. An empty array element acts as a wildcard. **All topic values must be base64 encoded** using `hexToBase64()`. |
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| `topics` | `TopicValues[]` | **Required.** An array to filter event topics. The first element must contain at least one event signature. The next three elements can contain indexed argument values (optional). An empty array element acts as a wildcard for indexed arguments. **All topic values must be base64 encoded** using `hexToBase64()`. |
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| `confidence` | `string` | Optional. The block confirmation level to monitor. Can be: <ul><li>**`"CONFIDENCE_LEVEL_LATEST"`**: The most recent block (fastest but least secure).</li><li>**`"CONFIDENCE_LEVEL_SAFE"` (default)**: A block unlikely to be reorged but not yet irreversible.</li><li>**`"CONFIDENCE_LEVEL_FINALIZED"`**: A block considered irreversible (safest, but requires waiting longer for finality).</li></ul> |
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<Aside type="note" title="Finality details">

‎src/content/cre/reference/sdk/triggers/evm-log-trigger-ts.mdx‎

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@@ -7,7 +7,7 @@ pageId: "reference-sdk-evm-log-trigger"
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metadata:
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description: "Reference for TypeScript EVM Log Trigger: Config interface, Payload fields, and topic filtering for event-driven workflows."
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datePublished: "2025-11-04"
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lastModified: "2026-01-26"
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lastModified: "2026-01-28"
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---
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import { Aside } from "@components"
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const evmClient = new EVMClient(network.chainSelector.selector)
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// Basic log trigger for a contract address
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const trigger = evmClient.logTrigger({
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addresses: [hexToBase64("0x123...abc")],
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})
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// With topics for event filtering
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// Create a log trigger with address and event signature
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const transferEventHash = keccak256(toBytes("Transfer(address,address,uint256)"))
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const trigger = evmClient.logTrigger({
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| <div style="width: 100px;">Field</div> | <div style="width: 140px;">Type</div> | Description |
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| -------------------------------------- | ------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| `addresses` | `string[]` | **Required.** A list of contract addresses to monitor. **Must be base64 encoded** using `hexToBase64()`. At least one address is required. |
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| `topics` | `TopicValues[]` | Optional. An array to filter event topics. The first element contains event signatures, and the next three elements contain indexed argument values. An empty array element acts as a wildcard. **All topic values must be base64 encoded** using `hexToBase64()`. |
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| `topics` | `TopicValues[]` | **Required.** An array to filter event topics. The first element must contain at least one event signature. The next three elements can contain indexed argument values (optional). An empty array element acts as a wildcard for indexed arguments. **All topic values must be base64 encoded** using `hexToBase64()`. |
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| `confidence` | `string` | Optional. The block confirmation level to monitor. Can be: <ul><li>**`"CONFIDENCE_LEVEL_LATEST"`**: The most recent block (fastest but least secure).</li><li>**`"CONFIDENCE_LEVEL_SAFE"` (default)**: A block unlikely to be reorged but not yet irreversible.</li><li>**`"CONFIDENCE_LEVEL_FINALIZED"`**: A block considered irreversible (safest, but requires waiting longer for finality).</li></ul> |
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<Aside type="note" title="Finality details">

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