> For the complete documentation index, see [llms.txt](https://docs.filecoin.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.filecoin.io/build-on-filecoin/filecoin-onchain-cloud/synapse-quickstart.md).

# Synapse SDK quickstart

The Synapse SDK is the main developer interface for Filecoin Onchain Cloud (FOC). The current setup steps, SDK APIs, payment behavior, pricing, and contract references live in the dedicated FOC documentation.

To avoid this page drifting from the maintained FOC guides, use it as a routing page instead of a duplicated quickstart.

## Start in the FOC docs

* [FOC getting started](https://docs.filecoin.cloud/getting-started) - install the Synapse SDK, connect a wallet, fund storage, upload data, and retrieve it.
* [Synapse SDK guide](https://docs.filecoin.cloud/developer-guides/synapse) - integrate the SDK into applications and review the current API surface.
* [Storage operations](https://docs.filecoin.cloud/developer-guides/storage/storage-operations) - manage uploads, retrievals, data sets, and storage lifecycle operations.
* [Payment operations](https://docs.filecoin.cloud/developer-guides/payments/payment-operations) - understand deposits, approvals, withdrawals, and payment rails.
* [Contract addresses](https://docs.filecoin.cloud/resources/contracts) - find current mainnet and testnet contract references.

For a CLI-oriented pinning workflow in these docs, use [Filecoin Pin](/build-on-filecoin/cookbook/filecoin-pin.md).

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