> ## Documentation Index
> Fetch the complete documentation index at: https://docs.near.org/llms.txt
> Use this file to discover all available pages before exploring further.

# OutLayer

> OutLayer is a verifiable off-chain compute platform for NEAR. Run Rust/WASM code inside Intel TDX enclaves with built-in VRF, secrets, MPC vaults, and payment keys.

[OutLayer](https://outlayer.fastnear.com) is a verifiable off-chain compute platform for NEAR, built by [FastNEAR](https://fastnear.com). Smart contracts delegate work to **Intel TDX** enclaves that return results with a cryptographic attestation proving the exact code ran on the exact inputs.

* **Website:** [outlayer.fastnear.com](https://outlayer.fastnear.com)
* **Source:** [github.com/fastnear/near-outlayer](https://github.com/fastnear/near-outlayer)

***

## How it works

1. You write code in **Rust** and compile it to **WebAssembly** (WASI Preview 1 or 2).
2. The binary is hosted on GitHub. OutLayer clones, compiles, and caches it.
3. A NEAR contract calls OutLayer using NEAR's `yield`/`resume` flow — or any client can call the HTTPS API directly.
4. The worker runs the WASM inside a **TDX enclave** and returns the result with a TEE attestation (code hash, input hash, output, signed by the hardware).

***

## Features

| Feature                         | Description                                                            |
| ------------------------------- | ---------------------------------------------------------------------- |
| **WASI runtime**                | Run any Rust code compiled to `wasm32-wasi`.                           |
| **TEE attestation**             | Cryptographic proof of code + input + output, signed by Intel TDX.     |
| **VRF**                         | Verifiable randomness with Ed25519 signatures.                         |
| **Secrets**                     | Encrypted API keys and credentials, decrypted only inside the enclave. |
| **Confidential Key Derivation** | Keys that exist only inside your TEE code and persist across upgrades. |
| **MPC Vaults**                  | Multi-party computation for shared key custody.                        |
| **Payment Keys**                | USDC-based metering for monetized HTTPS endpoints.                     |
| **Persistent storage**          | Encrypted storage between executions.                                  |

***

## Example use cases

The [examples gallery](https://outlayer.fastnear.com/docs/examples) ships 14+ production-ready demos. A few highlights:

* **Price & weather oracles** — fetch off-chain data with a proof of source.
* **Coin-flip / lottery** — VRF-based randomness for fair on-chain games.
* **AI calls** — invoke OpenAI/GPT from a contract with verifiable output.
* **Cross-chain reads** — query Ethereum state without a bridge.
* **Private DAO voting** — tally votes inside the enclave; only the result is published.
* **NEAR Intents swaps** — execute Intent flows from off-chain logic.
* **Encrypted email & CAPTCHA** — end-to-end use cases requiring secrets.

<Tip>
  Start with the [Getting Started guide](https://outlayer.fastnear.com/docs/getting-started) and the [Dev Guide](https://outlayer.fastnear.com/docs/dev-guide) to set up your first WASM module and call it from a NEAR contract.
</Tip>

***

## Deployed services built on OutLayer

| Name             | Description                                                     | Reference                                                   |
| ---------------- | --------------------------------------------------------------- | ----------------------------------------------------------- |
| **Price Oracle** | TEE-secured, Pyth-compatible price feed on `price-oracle.near`. | See [Oracles](/primitives/oracles#price-oracle-by-outlayer) |

<Info>
  OutLayer is a third-party platform. As with any external service, evaluate its operational guarantees, attestation verification flow, and key custody model before relying on it for production assets.
</Info>