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GET
List customers

Authorizations

x-api-key
string
header
required

Echo API key — format: echo_<64 hex chars>. Returned once on signup.

Response

200 - application/json

Array of customers

id
string<uuid>
Example:

"8cc6199f-9466-46f2-9db7-936f3c2c1c0b"

project_id
string<uuid>
Example:

"e56b4c35-882d-4604-9944-9763d314ea59"

external_id
string
Example:

"cust_001"

first_name
string
Example:

"John"

last_name
string
Example:

"Smith"

metadata
object | null
Example:
phones
object[]
created_at
string<date-time>
Example:

"2026-03-18T16:51:03.253Z"