> For the complete documentation index, see [llms.txt](https://docs.lumia.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lumia.org/build-on-lumia/indexers/index-contract-data-with-goldsky.md).

# Index contract data with Goldsky

You want a managed indexing pipeline (subgraph-compatible or a direct data mirror) against Lumia contract data.

**Who this is for:** developers who want indexed contract data without running their own Graph Node. **Prerequisites:** a deployed, verified contract on Lumia; [Networks & Endpoints](https://app.gitbook.com/s/chmhPiVNAafGw48c4oU2/reference/networks-and-endpoints).

{% hint style="warning" %}
Confirm chain support directly with Goldsky before building a pipeline against it.
{% endhint %}

### Steps (confirm network support before deploying)

{% stepper %}
{% step %}
**Install Goldsky's CLI and authenticate**

Consult Goldsky's own current published docs for the package name, version, and login command, since that's their product, not Lumia's. Authenticating requires a Goldsky account and API key.
{% endstep %}

{% step %}
**Confirm Lumia is a supported chain in Goldsky's platform**
{% endstep %}

{% step %}
**Deploy your subgraph manifest, if you have one**

If you already have a subgraph manifest (see [`/build/indexers/thegraph`](https://app.gitbook.com/s/chmhPiVNAafGw48c4oU2/build-on-lumia/indexers/index-contract-events-with-the-graph)), Goldsky's subgraph-hosting deploy step may apply. Consult Goldsky's own docs for the exact deploy command and its arguments.
{% endstep %}

{% step %}
**Or configure a direct-mirror pipeline**

For a direct-mirror pipeline (raw contract events/decoded logs into a database or webhook) instead of a subgraph, consult Goldsky's own docs for the pipeline definition format and how to point it at a Lumia source.
{% endstep %}
{% endstepper %}

### Verify it worked

Check the pipeline/subgraph status in the Goldsky dashboard, then query it for an entity or row you know exists on-chain (cross-check against the explorer) and confirm it matches.

### Troubleshooting

<details>

<summary>Lumia not selectable as a source chain</summary>

This is expected until Lumia's chain registration with Goldsky is confirmed; ask Goldsky support directly.

</details>

<details>

<summary>Pipeline shows synced but data looks incomplete</summary>

Check the configured start block against when your contract was actually deployed.

</details>