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POST
/
v1
/
playground
/
sms
/
inbound
cURL
curl --request POST \
  --url https://api.buildwithchirp.com/v1/playground/sms/inbound \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "from": "+15559876543",
  "to": "+15551234567",
  "text": "Hello from a simulated user!",
  "subject": "Subject line"
}
'
{
  "id": "<string>",
  "status": "QUEUED"
}

Authorizations

​
Authorization
string
header
required

App API key (format: sk_live_app_* or sk_test_app_*) for app-level operations

Body

application/json
​
from
string
required

Phone number simulating the external user (the sender). E.164 format required.

Example:

"+15559876543"

​
to
string
required

Your Chirp phone number that should receive the simulated message. E.164 format required.

Example:

"+15551234567"

​
text
string
required

Message text content to deliver to your webhook.

Minimum string length: 1
Example:

"Hello from a simulated user!"

​
subject
string

Optional subject line (MMS-style).

Example:

"Subject line"

Response

Inbound message queued for processing

​
id
string
required

ID of the queued incoming webhook event.

​
status
enum<string>
required

The simulated message has been accepted and queued for delivery to your webhook.

Available options:
QUEUED