# Create clusters — POST /v1/compute/clusters URL: https://docs.hanzo.ai/docs/openapi/compute/attachcluster > Attaches a BYO cluster to the caller's org — the kubeconfig is validated, KMS-sealed and added to the fleet — and answers 201 with the cluster as it now appears on GET /v1/compute/clusters. `POST /v1/compute/clusters` > [Compute →](https://docs.hanzo.ai/docs/openapi/compute) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides) | | | | ------------- | ------------------------------------------ | | **Address** | `https://api.hanzo.ai/v1/compute/clusters` | | **Method** | `POST` | | **Operation** | `attachCluster` | | **Auth** | `Authorization: Bearer $HANZO_API_KEY` | Attaches a BYO cluster to the caller's org — the kubeconfig is validated, KMS-sealed and added to the fleet — and answers 201 with the cluster as it now appears on GET /v1/compute/clusters. Billed the nominal management fee: the customer brings the compute, Hanzo meters the management plane. ## Request 4 fields, body `application/json` (required). | Field | In | Type | Required | Description | | ------------ | ---- | ------- | -------- | ------------------------------------------------------------------------------------------------------------------- | | `default` | body | boolean | — | Default marks this the org's default cluster for scheduling. | | `kubeconfig` | body | string | — | Kubeconfig is the cluster's kubeconfig, verbatim. | | `name` | body | string | — | Name is the fleet-local name for the cluster; lower-cased, and the key the detach route addresses it by. | | `provider` | body | string | — | Provider is a free-form label for where the cluster runs ("gke", "on-prem"); it is display only, not a routing key. | ## Response | Status | Body | Meaning | | --------- | ------------------- | ------- | | `200` | compute.clusterView | ok | | `default` | problem-details | refused | `200` body — 19 fields. | Field | In | Type | Always | Description | | ----------------------- | ---- | ----------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `amdGpu` | body | integer (int64) | — | AmdGPU is the same count for `amd.com/gpu`: AMD accelerators across the BYO cluster's nodes, as of the attach. | | `createdAt` | body | string | — | CreatedAt is when the cluster started existing: the earliest creation time among its pools for a managed cluster, and for a BYO one the RFC 3339 moment it was attached. | | `doClusterId` | body | string | — | DoClusterID carries the SAME id as DoksClusterID. | | `doksClusterId` | body | string | — | DoksClusterID is the provider's own id for the cluster, and the value the /v1/compute/k8s/clusters/:id routes take. | | `kind` | body | string | — | Kind says which of the two kinds of cluster this row is, and there are only two: "managed" — Visor provisioned it and Hanzo's account pays the provider — or "byo", an existing cluster the org attached by kubeconfig. | | `name` | body | string | — | Name is the cluster's name: the provider's for a managed cluster, and for a BYO one the lower-cased fleet name it was attached under — which is also how the detach route addresses it. | | `nodeCount` | body | integer (int64) | — | NodeCount is how many worker nodes the cluster has — the sum over its pools for a managed cluster, and for a BYO one the node count read off the cluster when it was attached. | | `nodePools` | body | compute.nodePoolView\[] | — | NodePools is the authoritative node inventory — every pool, each with its own size and count. | | `nodePools[].autoScale` | body | boolean | — | AutoScale reports whether the provider's cluster autoscaler owns this pool's size, moving Count between MinNodes and MaxNodes as workloads demand. | | `nodePools[].count` | body | integer (int64) | — | Count is how many nodes the pool has right now. | | `nodePools[].maxNodes` | body | integer (int64) | — | MaxNodes is the ceiling the autoscaler will not grow the pool past, and so the bound on what this pool can cost. | | `nodePools[].minNodes` | body | integer (int64) | — | MinNodes is the floor the autoscaler will not shrink the pool below. | | `nodePools[].name` | body | string | — | Name is the pool's name as the provider knows it. | | `nodePools[].poolId` | body | string | — | PoolID is the provider's id for the pool — the value the scale and delete routes address it by. | | `nodePools[].size` | body | string | — | Size is the provider size slug every node in the pool runs at ("s-4vcpu-8gb", "gpu-h100x8-640gb"). | | `nodeSize` | body | string | — | NodeSize is a display convenience: the size slug of the FIRST pool. | | `nvidiaGpu` | body | integer (int64) | — | NvidiaGPU is how many NVIDIA accelerators the cluster's nodes advertise, the sum of `nvidia.com/gpu` allocatable across them. | | `region` | body | string | — | Region is the provider region slug for a managed cluster. | | `status` | body | string | — | Status is the cluster's state: the provider's own word for a managed cluster ("running", "provisioning"), "unknown" when the provider stated none, and always "attached" for a BYO cluster — that one says the kubeconfig is on file, not that the cluster is reachable this second. | Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors). ## Examples **CLI** ```bash hanzo compute clusters create ``` **SDK** **.ts** ```ts import { Configuration, ComputeApi } from 'hanzoai'; const api = new ComputeApi(new Configuration({ accessToken: process.env.HANZO_API_KEY })); const { data } = await api.attachCluster({ default: false, kubeconfig: "" }); ``` **.py** ```python from hanzoai.cloud import ApiClient, Configuration from hanzoai.cloud.api import ComputeApi client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"])) result = ComputeApi(client).attach_cluster(default=False, kubeconfig="") ``` **.go** ```go cfg := hanzoai.NewConfiguration() cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) client := hanzoai.NewAPIClient(cfg) resp, _, err := client.ComputeAPI.AttachCluster(context.Background()).Execute() if err != nil { return err } ``` **.rs** ```rust use hanzo_client::apis::{configuration::Configuration, compute_api}; let mut cfg = Configuration::new(); cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok(); let result = compute_api::attach_cluster(&cfg, Default::default()).await?; ``` **.java** ```java import ai.hanzo.cloud.ApiClient; import ai.hanzo.cloud.api.ComputeApi; ApiClient client = new ApiClient(); client.setBearerToken(System.getenv("HANZO_API_KEY")); var result = new ComputeApi(client).attachCluster(); ``` **HTTP** ```bash curl -X POST https://api.hanzo.ai/v1/compute/clusters \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "default": false, "kubeconfig": "" }' ``` **MCP** Tool `compute`, op `attachCluster` — POST the JSON-RPC envelope to `https://api.hanzo.ai/v1/mcp`. ```bash curl -X POST https://api.hanzo.ai/v1/mcp \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "compute", "arguments": { "op": "attachCluster", "input": { "default": false, "kubeconfig": "" } } } }' ``` --- [Compute API](https://docs.hanzo.ai/docs/openapi/compute) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)