{
"info": {
"_postman_id": "c647a506-15e0-46a5-a9bd-57438091ab9d",
"name": "IonQ Cloud Platform backends characterizations API",
"description": "*Last updated: May 15, 2026*\nIonQ's API for accessing the IonQ Quantum Cloud platform\n\nPlease subscribe for automated updates when we perform maintenance or\nexperience an outage.\n\nIn addition, you may use the [status endpoint](#tag/status) to check the\ncurrent status of our API.\n\n## Authentication\n\n\n\n\nContact Support:\n Name: IonQ\n Email: support@ionq.co",
"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
"createdAt": "2026-07-28T01:58:53.000Z",
"updatedAt": "2026-07-28T01:58:53.000Z",
"lastUpdatedBy": "35240",
"uid": "35240-c647a506-15e0-46a5-a9bd-57438091ab9d"
},
"item": [
{
"name": "backends",
"item": [
{
"name": "{backend}",
"item": [
{
"name": "characterizations",
"item": [
{
"name": "{UUID}",
"item": [
{
"name": "Get a Characterization",
"id": "c4a965f2-686b-4848-871f-e76177077ebe",
"protocolProfileBehavior": {
"disableBodyPruning": true
},
"request": {
"method": "GET",
"header": [
{
"key": "Accept",
"value": "application/json"
}
],
"url": {
"raw": "{{baseUrl}}/backends/:backend/characterizations/:UUID",
"host": [
"{{baseUrl}}"
],
"path": [
"backends",
":backend",
"characterizations",
":UUID"
],
"variable": [
{
"id": "fa331e95-012f-462f-a9bc-b9a04efbe672",
"key": "backend",
"value": "qpu.forte-enterprise-3",
"description": "(Required) A backend where jobs can run on."
},
{
"id": "01770af1-7601-41f0-97d2-30d31df2a534",
"key": "UUID",
"value": "",
"description": "(Required) A UUID identifying a specific resource"
}
]
},
"description": "This endpoint retrieves a characterization."
},
"response": [
{
"id": "2b7bca24-ab53-4598-93a1-6353c1c66b0f",
"name": "Successfully retrieved current characterization",
"originalRequest": {
"method": "GET",
"header": [
{
"key": "Accept",
"value": "application/json"
}
],
"url": {
"raw": "{{baseUrl}}/backends/:backend/characterizations/:UUID",
"host": [
"{{baseUrl}}"
],
"path": [
"backends",
":backend",
"characterizations",
":UUID"
],
"variable": [
{
"key": "backend"
},
{
"key": "UUID"
}
]
}
},
"status": "OK",
"code": 200,
"_postman_previewlanguage": "json",
"header": [
{
"key": "Content-Type",
"value": "application/json"
}
],
"cookie": [],
"responseTime": null,
"body": "{\n \"backend\": \"\",\n \"connectivity\": [\n [\n \"\",\n \"\"\n ],\n [\n \"\",\n \"\"\n ]\n ],\n \"date\": \"\",\n \"fidelity\": {\n \"spam\": {\n \"median\": \"\",\n \"stderr\": \"\"\n }\n },\n \"id\": \"\",\n \"qubits\": \"\",\n \"timing\": {\n \"readout\": \"\",\n \"reset\": \"\",\n \"1q\": \"\",\n \"2q\": \"\",\n \"t1\": \"\",\n \"t2\": \"\"\n }\n}",
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-2b7bca24-ab53-4598-93a1-6353c1c66b0f"
}
],
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-c4a965f2-686b-4848-871f-e76177077ebe"
}
],
"id": "72a6c5d6-f370-4dda-86a4-dd004c7b720e",
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-72a6c5d6-f370-4dda-86a4-dd004c7b720e"
},
{
"name": "Get All Backend Characterizations",
"id": "19eaa283-fca8-4721-95f0-f7ab6d6568ad",
"protocolProfileBehavior": {
"disableBodyPruning": true
},
"request": {
"method": "GET",
"header": [
{
"key": "Accept",
"value": "application/json"
}
],
"url": {
"raw": "{{baseUrl}}/backends/:backend/characterizations?start=&end=&limit=10&page=1",
"host": [
"{{baseUrl}}"
],
"path": [
"backends",
":backend",
"characterizations"
],
"query": [
{
"description": "Characterizations starting at this time (e.g., `start=2025-12-31`)",
"key": "start",
"value": ""
},
{
"description": "Characterizations before this time (e.g., `end=2025-12-31`)",
"key": "end",
"value": ""
},
{
"description": "How many objects to return.",
"key": "limit",
"value": "10"
},
{
"key": "page",
"value": "1"
}
],
"variable": [
{
"id": "e7747e37-e870-4b33-a123-511b63909c6a",
"key": "backend",
"value": "qpu.forte-enterprise-3",
"description": "(Required) A backend where jobs can run on."
}
]
},
"description": "This endpoint retrieves an array of all available backend characterizations, with pagination."
},
"response": [
{
"id": "adc2b378-3247-487f-843e-1ca20370571e",
"name": "Successfully retrieved characterizations.",
"originalRequest": {
"method": "GET",
"header": [
{
"key": "Accept",
"value": "application/json"
}
],
"url": {
"raw": "{{baseUrl}}/backends/:backend/characterizations?start=&end=&limit=10&page=1",
"host": [
"{{baseUrl}}"
],
"path": [
"backends",
":backend",
"characterizations"
],
"query": [
{
"description": "Characterizations starting at this time (e.g., `start=2025-12-31`)",
"key": "start",
"value": ""
},
{
"description": "Characterizations before this time (e.g., `end=2025-12-31`)",
"key": "end",
"value": ""
},
{
"description": "How many objects to return.",
"key": "limit",
"value": "10"
},
{
"key": "page",
"value": "1"
}
],
"variable": [
{
"key": "backend"
}
]
}
},
"status": "OK",
"code": 200,
"_postman_previewlanguage": "json",
"header": [
{
"key": "Content-Type",
"value": "application/json"
}
],
"cookie": [],
"responseTime": null,
"body": "{\n \"characterizations\": [\n {\n \"backend\": \"\",\n \"connectivity\": [\n [\n \"\",\n \"\"\n ],\n [\n \"\",\n \"\"\n ]\n ],\n \"date\": \"\",\n \"fidelity\": {\n \"spam\": {\n \"median\": \"\",\n \"stderr\": \"\"\n }\n },\n \"id\": \"\",\n \"qubits\": \"\",\n \"timing\": {\n \"readout\": \"\",\n \"reset\": \"\",\n \"1q\": \"\",\n \"2q\": \"\",\n \"t1\": \"\",\n \"t2\": \"\"\n }\n },\n {\n \"backend\": \"\",\n \"connectivity\": [\n [\n \"\",\n \"\"\n ],\n [\n \"\",\n \"\"\n ]\n ],\n \"date\": \"\",\n \"fidelity\": {\n \"spam\": {\n \"median\": \"\",\n \"stderr\": \"\"\n }\n },\n \"id\": \"\",\n \"qubits\": \"\",\n \"timing\": {\n \"readout\": \"\",\n \"reset\": \"\",\n \"1q\": \"\",\n \"2q\": \"\",\n \"t1\": \"\",\n \"t2\": \"\"\n }\n }\n ],\n \"pages\": \"\"\n}",
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-adc2b378-3247-487f-843e-1ca20370571e"
}
],
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-19eaa283-fca8-4721-95f0-f7ab6d6568ad"
}
],
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"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-88619b07-26c8-4055-9d76-b2cc3b2d2232"
}
],
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"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-de44d736-9442-44c2-95c0-01b016623ce7"
}
],
"id": "f70e6928-c49b-4eb3-b5e2-779dda6fac13",
"createdAt": "2026-07-28T01:58:54.000Z",
"updatedAt": "2026-07-28T01:58:54.000Z",
"uid": "35240-f70e6928-c49b-4eb3-b5e2-779dda6fac13"
}
],
"variable": [
{
"key": "baseUrl",
"value": "https://api.ionq.co/v0.4"
}
]
}