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POST
/
api
/
v1
/
orders
{
  "order_id": "<string>",
  "status": "<string>"
}

Authorizations

​
X-API-Key
string
header
required

Your API key (get one from the test-key endpoint above)

Body

application/json
​
exchange
enum<string>
required

Supported exchange identifier.

Available options:
polymarket,
kalshi,
opinionlabs,
gemini,
limitless,
predictfun
​
market_id
string
required

Informational; used for order tracking on the Delphi server.

​
order_type
enum<string>
required

Order time-in-force. GTC = good-til-canceled, GTD = good-til-date, FOK = fill-or-kill, FAK = fill-and-kill.

Available options:
GTC,
GTD,
FOK,
FAK
​
signed_order
object
required

Order payload. Shape depends on exchange — see the per-exchange examples.

​
credentials
object

Optional inline credentials that override stored credentials for this single request. Rarely needed.

Response

Order placed successfully

​
order_id
string
required
​
exchange
enum<string>
required

Supported exchange identifier.

Available options:
polymarket,
kalshi,
opinionlabs,
gemini,
limitless,
predictfun
​
status
string
required

Exchange-reported status, e.g. live, matched, cancelled.