GET/transaction

Get a transaction by ID

Gets a transaction submitted to the Relayer. Takes in a required transaction ID as a query parameter. Poll this endpoint with the `transactionID` returned from `POST /submit` to retrieve the onchain `transactionHash` once the transaction has been broadcast.

Base URL: https://relayer-v2.polymarket.com
Auth: Public, no key
Rate limit: Not published
Limit applies to: n/a

Parameters

Name	In	Type	Required	Description
id	query	string	yes	Transaction ID

Example

curl -X GET "https://relayer-v2.polymarket.com/transaction?id=<id>"

Returns a list of objects with these fields

Field	Type	Description
transactionID	string	Unique identifier for the transaction
transactionHash	string	Onchain transaction hash (available once confirmed)
from	string	Ethereum address (0x-prefixed, 40 hex chars)
to	string	Ethereum address (0x-prefixed, 40 hex chars)
proxyAddress	string	Ethereum address (0x-prefixed, 40 hex chars)
data	string	Encoded transaction data (0x-prefixed hex string)
nonce	string	Transaction nonce
value	string	Transaction value
signature	string	Transaction signature (0x-prefixed hex string)
state	string	Current state of the transaction
type	string	Transaction type
owner	string	Ethereum address (0x-prefixed, 40 hex chars)
metadata	string	Transaction metadata
createdAt	string	Timestamp when the transaction was created
updatedAt	string	Timestamp when the transaction was last updated

Responses

Status	Meaning
200	Transaction retrieved successfully
400	Bad Request - Missing or invalid transaction ID
404	Transaction not found
500	Server Error

Related endpoints

GET /transactions Relayer API

Polymarket's API serves current state only, so it cannot show what a market's book looked like after it resolved. PolyTest records Up/Down markets while they run and keeps the snapshots. Try it free, or read the full rate limit reference.

From Polymarket's published OpenAPI spec and rate-limit tables, synced 2026-10-04.