# Proof routes

URL: /code/api/proof · Id: `page:code/api/proof`

> Every Proof Verb as an api.sb route, with its inputs, result, refusals and an example.

Reference for [Proof](/business/nouns/proof).

| Noun | System | Run by |
| --- | --- | --- |
| [Proof](/business/nouns/proof) | [Compliance](/systems/compliance) | [Compliance Officer](/agents/legal/compliance-officer) |

### Proof.get
Returns one Proof by id. [Verb page](/business/nouns/proof/get?interface=api).

```text
GET /{namespace}/proofs/{id}
```

Path: `id`. Query: the other inputs. Reads only: it emits no Event.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `id` | `string` | Yes | The id of the Proof. |
| `at` | `string` | No | A time or Version name: the record as it stood then. Unset: as it stands now. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `proof` | [Proof](/business/nouns/proof) | Yes | The Proof. |

**Refuses when**

| Check | Error | Fix | Then call |
| --- | --- | --- | --- |
| The key is valid, but its scopes do not allow this operation. | [`forbidden`](/code/api/errors/forbidden) | Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them. | None. |

**Example**

```bash
curl https://api.sb/leaseline.app/proofs/proof_8mV0dnvvRl \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/leaseline.app",
  "$type": "Proof",
  "$id": "https://api.sb/leaseline.app/proofs/proof_8mV0dnvvRl",
  "proof": {
    "$id": "https://api.sb/leaseline.app/proofs/proof_8mV0dnvvRl",
    "$type": "Proof",
    "control": "control_o4pMmXUeCH",
    "namespace": "Example namespace",
    "from": "2026-10-22T12:00:00Z",
    "to": "2026-10-22T12:00:00Z"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/proofs/proof_8mV0dnvvRl",
    "up": "https://api.sb/leaseline.app/proofs"
  }
}
```

### Proof.list
Returns Proofs, newest first, one page at a time. [Verb page](/business/nouns/proof/list?interface=api).

```text
GET /{namespace}/proofs
```

Query: the inputs. Reads only: it emits no Event.

**Inputs**

| Input | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | `integer` | No | At most this many records, up to 100. The default is 20. |
| `after` | `string` | No | The cursor from the previous page. |
| `where` | `string` | No | A filter over the properties, such as `paidAt = null and total.amount > 500`. |
| `sort` | `string` | No | Properties to sort by, comma-separated; a leading minus sorts descending. |
| `total` | `boolean` | No | True adds the match count as `meta.total`, exact up to 10,000 matches and estimated above. |
| `facets` | `string` | No | Properties to count by value, comma-separated, returned as `meta.facets`. |
| `fields` | `string` | No | Properties to return on each record, comma-separated; `$id` and `$type` always return. |
| `include` | `string` | No | Related records to embed in place of their URLs, comma-separated. |
| `depth` | `integer` | No | How many levels of related records to embed. The default is 1. |
| `q` | `string` | No | Words to match across the text properties, ranked by relevance. |
| `match` | `string` | No | Ranks the search by `words`, or `meaning`; words is the default. |

**Returns**

| Output | Type | Required | Description |
| --- | --- | --- | --- |
| `proofs` | list of [Proof](/business/nouns/proof) | Yes | One page of Proofs. |

**Refuses when**

| Check | Error | Fix | Then call |
| --- | --- | --- | --- |
| The key is valid, but its scopes do not allow this operation. | [`forbidden`](/code/api/errors/forbidden) | Use a key whose scopes cover the operation, or ask an owner of the namespace to grant them. | None. |

**Example**

```bash
curl "https://api.sb/leaseline.app/proofs?limit=20" \
  -H "Authorization: Bearer $STARTUP_BUILDER_API_KEY"
```

```json
{
  "api": "https://api.sb/leaseline.app",
  "$type": "Proof",
  "proofs": [
    {
      "$id": "https://api.sb/leaseline.app/proofs/proof_8mV0dnvvRl",
      "$type": "Proof",
      "control": "control_o4pMmXUeCH",
      "namespace": "Example namespace",
      "from": "2026-10-22T12:00:00Z",
      "to": "2026-10-22T12:00:00Z"
    }
  ],
  "meta": {
    "limit": 20,
    "after": "proof_8mV0dnvvRl"
  },
  "links": {
    "self": "https://api.sb/leaseline.app/proofs?limit=20",
    "next": "https://api.sb/leaseline.app/proofs?after=proof_8mV0dnvvRl"
  }
}
```