# Create decisions — POST /v1/ai/mcp/decisions URL: https://docs.hanzo.ai/docs/openapi/ai/aidecide > Runs one decision — the caller's own POST /v1/decisions, gated and billed exactly as that route is — and answers the decision, which model served it and who paid. `POST /v1/ai/mcp/decisions` > [AI →](https://docs.hanzo.ai/docs/openapi/ai) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides) | | | | ------------- | ------------------------------------------ | | **Address** | `https://api.hanzo.ai/v1/ai/mcp/decisions` | | **Method** | `POST` | | **Operation** | `aiDecide` | | **Auth** | `Authorization: Bearer $HANZO_API_KEY` | Runs one decision — the caller's own POST /v1/decisions, gated and billed exactly as that route is — and answers the decision, which model served it and who paid. A refusal names its code and what lifts it, never an amount. ## Request 6 fields, body `application/json` (required). | Field | In | Type | Required | Description | | ------------- | ---- | ------ | -------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `handle` | body | string | — | Handle decides over a state this org observed earlier, in place of State and Questions. | | `model` | body | string | — | Model is kai, Kai's versioned id kai-<12 hex>, or Jev by its vendor id (typesafe/jev-1.13, \~typesafe/jev-latest). | | `observe` | body | string | — | Observe holds the state under this id (1 to 128 of A-Z a-z 0-9 . \_ -), so a later decision can name it as its Handle. | | `questions` | body | object | — | Questions are 1 to 100 named questions, each {"type": "choice"\|"noul"\|"score", "instructions"?, "criteria"?}; a choice names at least 2 labels and a score at least 1 level. | | `questions.*` | body | any | — | | | `state` | body | any | — | State is what the questions are about: a string, an object or an array, kept as written. | ## Response | Status | Body | Meaning | | --------- | --------------- | ------- | | `200` | aiDecision | ok | | `default` | problem-details | refused | `200` body — 9 fields. | Field | In | Type | Always | Description | | ------------------ | ---- | --------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------ | | `decision` | body | any | — | Decision is POST /v1/decisions' own answer: id, model, provider, answers, usage (the billed input tokens), routing, state\_hash and latency\_ms. | | `receipt` | body | aiReceipt | — | | | `receipt.class` | body | string | — | Class is the model's class as billed: premium, ours or free (X-Hanzo-Usage-Class). | | `receipt.fallback` | body | string | — | Fallback is the model that answered in place of the one asked, in limited mode (X-Hanzo-Fallback). | | `receipt.paid_by` | body | string | — | PaidBy is plan, credits or free (X-Hanzo-Paid-By); absent when the answer named no payer, as a free model's does. | | `receipt.reason` | body | string | — | Reason is the refusal code that sent the request to the fallback (X-Hanzo-Usage-Reason). | | `receipt.routed` | body | string | — | Routed is the model `auto` resolved to (X-Routed-Model). | | `receipt.served` | body | string | — | Served is the model that answered (X-Hanzo-Served). | | `receipt.usage` | body | string | — | Usage is where that class stands for the payer: ok, near or limited (X-Hanzo-Usage). | Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors). ## Examples **CLI** `hanzo` has no subcommand for this operation — the CLI serves only what cloud's live route table confirms. Use HTTP or an SDK. **SDK** **.ts** ```ts import { Configuration, AiApi } from 'hanzoai'; const api = new AiApi(new Configuration({ accessToken: process.env.HANZO_API_KEY })); const { data } = await api.aiDecide({ handle: "", model: "" }); ``` **.py** ```python from hanzoai.cloud import ApiClient, Configuration from hanzoai.cloud.api import AiApi client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"])) result = AiApi(client).ai_decide(handle="", model="") ``` **.go** ```go cfg := hanzoai.NewConfiguration() cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) client := hanzoai.NewAPIClient(cfg) resp, _, err := client.AiAPI.AiDecide(context.Background()).Execute() if err != nil { return err } ``` **.rs** ```rust use hanzo_client::apis::{configuration::Configuration, ai_api}; let mut cfg = Configuration::new(); cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok(); let result = ai_api::ai_decide(&cfg, Default::default()).await?; ``` **.java** ```java import ai.hanzo.cloud.ApiClient; import ai.hanzo.cloud.api.AiApi; ApiClient client = new ApiClient(); client.setBearerToken(System.getenv("HANZO_API_KEY")); var result = new AiApi(client).aiDecide(); ``` **HTTP** ```bash curl -X POST https://api.hanzo.ai/v1/ai/mcp/decisions \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "handle": "", "model": "" }' ``` **MCP** MCP declares no tool for **ai** — `tools/list` on `https://api.hanzo.ai/v1/mcp` names the products it does reach. Use HTTP or an SDK. --- [AI API](https://docs.hanzo.ai/docs/openapi/ai) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)