> ## Documentation Index
> Fetch the complete documentation index at: https://docs.hyperlane.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Insert Merkle Tree Insertions

Insert merkle tree insertion into the relayer database.

<Expandable title="Request Body">
  <ParamField body="merkle_tree_insertions" type="Object[]" required>
    Array of Merkle Tree Insertions

    <Expandable title="merkle_tree_insertions">
      <ParamField body="chain" type="u32" required>
        Chain of merkle tree insertion
      </ParamField>

      <ParamField body="insertion_block_number" type="u64" required>
        Block number of merkle tree insertion
      </ParamField>

      <ParamField body="leaf_index" type="u32" required>
        Leaf index
      </ParamField>

      <ParamField body="message_id" type="string" required>
        Message ID
      </ParamField>
    </Expandable>
  </ParamField>
</Expandable>

<Expandable title="Response Body">
  <ResponseField name="count" type="number">
    Number of merkle tree insertions inserted successfully
  </ResponseField>

  <ResponseField name="skipped" type="Object[]">
    List of merkle tree insertions that were skipped
  </ResponseField>
</Expandable>

<RequestExample>
  ```bash curl theme={null}
  curl "http://localhost:9090/merkle_tree_insertions" \
    -H "Content-Type: application/json" \
    -d \
  '{
      "merkle_tree_insertions": [
          {
              "chain": 1,
              "insertion_block_number": 100000,
              "leaf_index": 5000,
              "message_id": "0x006ce24a2b5aff423febad6587a68541f2f997a8ba12f0d239748b68f4e0dde5"
          }
      ]
  }'
  ```

  ```javascript JavaScript theme={null}
  const response = await fetch('http://localhost:9090/igp_rules', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      merkle_tree_insertions: [
        {
            chain: 1,
            insertion_block_number: 100000,
            leaf_index: 5000,
            message_id: "0x006ce24a2b5aff423febad6587a68541f2f997a8ba12f0d239748b68f4e0dde5"
        }
    ]
    })
  });
  ```

  ```python Python theme={null}
  import requests

  response = requests.post('http://localhost:9090/igp_rules', json={
    "merkle_tree_insertions": [
        {
            "chain": 1,
            "insertion_block_number": 100000,
            "leaf_index": 5000,
            "message_id": "0x006ce24a2b5aff423febad6587a68541f2f997a8ba12f0d239748b68f4e0dde5"
        }
    ]
  })
  ```
</RequestExample>

<ResponseExample>
  ```json Response theme={null}
  {
    "count": 4,
    "skipped": []
  }
  ```
</ResponseExample>