<!-- source: https://secondlayer.tools/docs/api-reference#subgraph-bundle-object -->

## The Subgraph bundle object

A compiled subgraph. Everything but `ok` and `bundleSize` is the body for `POST /api/subgraphs`.

| Field | Type | Description |
| --- | --- | --- |
| `ok` | enum | Always `true`. Values: `true`. |
| `name` | string | Name from the definition. |
| `description` | string · nullable | Description from the definition, if set. |
| `sources` | object | Event sources by name. |
| `schema` | object | Table definitions by name. |
| `handlerCode` | string | The bundled handler module. |
| `sourceCode` | string | The `code` you sent, echoed back. |
| `bundleSize` | integer | Size of `handlerCode` in bytes. |

```json
{
  "ok": true,
  "name": "sbtc-flows",
  "description": null,
  "sources": {
    "transfers": {
      "type": "ft_transfer",
      "assetIdentifier": "SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token::sbtc-token"
    }
  },
  "schema": {
    "transfers": {
      "columns": {
        "amount": {
          "type": "uint"
        },
        "sender": {
          "type": "principal"
        },
        "recipient": {
          "type": "principal"
        }
      }
    }
  },
  "handlerCode": "// secondlayer-stub:@secondlayer/subgraphs\nfunction defineSubgraph(def) {\n  return def;\n}\n\n// <stdin>\nvar stdin_default = defineSubgraph({\n  name: \"sbtc-flows\",\n  startBlock: 8e6,\n  sources: {\n    transfers: {\n      type: \"ft_transfer\",\n      assetIdentifier: \"SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token::sbtc-token\"\n    }\n  },\n  schema: {\n    transfers: {\n      columns: {\n        amount: { type: \"uint\" },\n        sender: { type: \"principal\" },\n        recipient: { type: \"principal\" }\n      }\n    }\n  },\n  handlers: {\n    transfers: (event, ctx) => {\n      ctx.insert(\"transfers\", { amount: event.amount, sender: event.sender, recipient: event.recipient });\n    }\n  }\n});\nexport {\n  stdin_default as default\n};\n",
  "sourceCode": "import { defineSubgraph } from \"@secondlayer/subgraphs\";\n\nexport default defineSubgraph({\n  name: \"sbtc-flows\",\n  startBlock: 8000000,\n  sources: {\n    transfers: {\n      type: \"ft_transfer\",\n      assetIdentifier: \"SM3VDXK3WZZSA84XXFKAFAF15NNZX32CTSG82JFQ4.sbtc-token::sbtc-token\",\n    },\n  },\n  schema: {\n    transfers: {\n      columns: {\n        amount: { type: \"uint\" },\n        sender: { type: \"principal\" },\n        recipient: { type: \"principal\" },\n      },\n    },\n  },\n  handlers: {\n    transfers: (event, ctx) => {\n      ctx.insert(\"transfers\", { amount: event.amount, sender: event.sender, recipient: event.recipient });\n    },\n  },\n});\n",
  "bundleSize": 724
}
```