# List reference URL: https://docs.hanzo.ai/docs/openapi/reference/riskreferencesets > Lists every set this plane publishes, with its version and how fresh it is. `GET /v1/reference` > [Reference →](https://docs.hanzo.ai/docs/openapi/reference) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides) | | | | ------------- | -------------------------------------- | | **Address** | `https://api.hanzo.ai/v1/reference` | | **Method** | `GET` | | **Operation** | `riskReferenceSets` | | **Auth** | `Authorization: Bearer $HANZO_API_KEY` | Lists every set this plane publishes, with its version and how fresh it is. Read the Stale and Refused lists first: they are the two ways this plane can be quietly wrong, and they are reported rather than inferred. A set in Refused answers nothing — it has never loaded, it is held by another component, or it names a source we hold no licence for. ## Request `GET /v1/reference` takes no parameters and no body — the credential is the whole request. ## Response | Status | Body | Meaning | | --------- | -------------------------- | ------- | | `200` | reference.ReferenceSetsOut | ok | | `default` | problem-details | refused | `200` body — 24 fields. | Field | In | Type | Always | Description | | -------------------------- | ---- | ---------------------------- | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `refused` | body | string\[] | — | Refused names the sets that cannot be consulted at all. | | `sets` | body | reference.ReferenceSet\[] | — | Sets is the whole catalog, in a stable order. | | `sets[].age` | body | string | — | Age is how long ago that was. | | `sets[].asOf` | body | string | — | AsOf is when the OLDEST contributing publisher was current, RFC 3339. | | `sets[].keys` | body | integer (int64) | — | Keys is how many members the baseline carries. | | `sets[].kind` | body | string | — | Kind is how the baseline comes to exist: fetch (downloaded from a publisher), local (computed here), attest (held by the component that screens against it, freshness reported), or gap (declared and NOT held, because the source needs a licence we do not have). | | `sets[].match` | body | string | — | Match is how a key is tested: exact, domain, net, digits, pattern or range. | | `sets[].maxAge` | body | string | — | MaxAge is how old this set may be before it is stale. | | `sets[].overrides` | body | integer (int64) | — | Overrides is how many entries YOUR org has laid over this baseline. | | `sets[].refusal` | body | string | — | Refusal names why the set cannot be relied on, when it cannot: never loaded, held elsewhere, or a licence we do not hold. | | `sets[].set` | body | string | — | Set is the name this set is addressed by. | | `sets[].sources` | body | reference.ReferenceSource\[] | — | Sources is each contributing publisher, its licence and its own freshness. | | `sets[].sources[].asOf` | body | string | — | AsOf is when this publisher was current, RFC 3339. | | `sets[].sources[].basis` | body | string | — | Basis is the KIND of permission this publisher's data reaches you under: licence (an explicit grant), registry (the registry of record publishing for anyone to consult), operator (an operator's own machine-readable statement about its own network, published for third parties to filter by — not a licence, and not claimed as one), own (computed here), or none (nothing reaches you: the membership is held by the component that screens against it). | | `sets[].sources[].keys` | body | integer (int64) | — | Keys is how many members this publisher contributed. | | `sets[].sources[].origin` | body | string | — | Origin is exactly where it was taken from, so it can be taken again. | | `sets[].sources[].refusal` | body | string | — | Refusal is why this publisher's last take failed, if it did. | | `sets[].sources[].source` | body | string | — | Source is the publisher. | | `sets[].sources[].terms` | body | string | — | Terms is the CITATION that basis points at — the licence identifier, the registry, or the operator publication. | | `sets[].sources[].version` | body | string | — | Version is the content digest of what this publisher last supplied. | | `sets[].stale` | body | boolean | — | Stale is whether it is past that bound. | | `sets[].version` | body | string | — | Version is the exact baseline consulted — every contributing publisher and its content digest. | | `sets[].what` | body | string | — | What the set holds, in one sentence. | | `stale` | body | string\[] | — | Stale names the sets past their freshness bound — the list to alarm on. | Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors). ## Examples **CLI** ```bash hanzo reference list ``` **SDK** **.ts** ```ts import { Configuration, ReferenceApi } from 'hanzoai'; const api = new ReferenceApi(new Configuration({ accessToken: process.env.HANZO_API_KEY })); const { data } = await api.riskReferenceSets(); ``` **.py** ```python from hanzoai.cloud import ApiClient, Configuration from hanzoai.cloud.api import ReferenceApi client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"])) result = ReferenceApi(client).risk_reference_sets() ``` **.go** ```go cfg := hanzoai.NewConfiguration() cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) client := hanzoai.NewAPIClient(cfg) resp, _, err := client.ReferenceAPI.RiskReferenceSets(context.Background()).Execute() if err != nil { return err } ``` **.rs** ```rust use hanzo_client::apis::{configuration::Configuration, reference_api}; let mut cfg = Configuration::new(); cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok(); let result = reference_api::risk_reference_sets(&cfg, Default::default()).await?; ``` **.java** ```java import ai.hanzo.cloud.ApiClient; import ai.hanzo.cloud.api.ReferenceApi; ApiClient client = new ApiClient(); client.setBearerToken(System.getenv("HANZO_API_KEY")); var result = new ReferenceApi(client).riskReferenceSets(); ``` **HTTP** ```bash curl https://api.hanzo.ai/v1/reference \ -H "Authorization: Bearer $HANZO_API_KEY" ``` **MCP** Tool `reference`, op `riskReferenceSets` — 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": "reference", "arguments": { "op": "riskReferenceSets", "input": {} } } }' ``` --- [Reference API](https://docs.hanzo.ai/docs/openapi/reference) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)