---
title: "Get Synapse Transaction ID"
method: GET
path: "/synapseTxId"
tags: ["Synapse Bridge REST API"]
---

# Get Synapse Transaction ID

`GET /synapseTxId`

Retrieve the Synapse transaction ID for a given origin chain transaction

## Query parameters

- `originChainId` integer, required
- `bridgeModule` 'SynapseRFQ' | 'SynapseBridge' | 'SynapseCCTP', required
- `txHash` string, required

## Response `200`

Successful response

- object
  - `synapseTxId` string — The Synapse transaction ID

## Other responses

- `400` — Invalid input
- `500` — Server error

---

[API](https://skmtc.dev/synapseprotocol/apis/synapse-protocol-rest-api.md) · [All operations](https://skmtc.dev/synapseprotocol/apis/synapse-protocol-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/synapseprotocol/synapse-protocol-rest-api/revisions/9949980b368b/schema)