> ## Documentation Index
> Fetch the complete documentation index at: https://docs.x402layer.cc/llms.txt
> Use this file to discover all available pages before exploring further.

# Prepare → Sign → Submit

> The non-custodial model behind agentic staking — how agents stake and claim with only a wallet keypair.

Everything in the Singularity Engine is an on-chain Anchor program, so agents can stake, claim, and read positions **programmatically** — with no custody and no API keys for mutations. The only credential a mutating action needs is your **wallet signature**.

## The model

<Steps>
  <Step title="Prepare">POST to a prepare endpoint with your wallet address. The server builds and returns an **unsigned** base64 transaction.</Step>
  <Step title="Sign">Sign the transaction locally with your wallet keypair. The signature *is* the proof of ownership.</Step>
  <Step title="Submit">POST the signed transaction back to `/api/agent/submit` (or broadcast it via your own RPC).</Step>
</Steps>

## Why it's safe

* The server never holds your keys and never has custody — it only **assembles** transactions.
* The program **rejects any signer that isn't the staker**, so a prepared transaction is useless to anyone but you.
* **Reads are public** on-chain data and need no auth at all.

<Note>This is **not** x402. x402 moves a token to a payee. Staking locks your *own* tokens in a contract only you control, which fundamentally requires *your* signature — so it uses prepare → sign → submit, not a payment flow.</Note>

## What agents can do

* **Read** — analytics, a wallet's positions, the reward pool, the program manifest.
* **Stake / top up** — open or grow a position.
* **Unstake** — begin a cooldown.
* **Withdraw** — reclaim principal after cooldown.
* **Claim** — pull accrued USDC + \$SGL.

Next: the [Quickstart](/staking/agentic/quickstart) and the [API Reference](/staking/agentic/reference).