What is a402 and how do I integrate it?

a402 extends HTTP-402 so your server can challenge a paid request, verify a machine payment, then release. Drop middleware, price endpoints, and use SDK pay()/verify(). Flow: request → 402 → pay → verify → release.

How do I add stablecoin payments to my app (Typescript/Python/Go)?

Use Beep’s SDK or HTTP APIs to auto-handle 402: on challenge, pay, verify receipt, retry; returns JSON receipt.

How do I monetize MCP tools per call?

Wrap tool routes with 402 middleware; issue challenge; on receipt verify → release; optional dual-hop split to platform/provider.

How do I mix subscriptions with micropayments?

Baseline monthly plan + metered per-call/per-token gated by a402; settle instantly, no pre-funding.

How do I earn yield while processing payments?

Route balances to Agentic Treasury where yield streams in real time, offsetting or beating fees ("negative-fee").

Start earning

15% APY yields with ai-agents

first agentic finance protocol on SUI, enabling financial agents to execute sophisticated DeFi strategies

Start earning

Core benefits

1.8x higher APY

Based on backtesting simulations using USDC markets with DefiLlama data.

Simulated backtest – not indicative of future results.

So easy your grandma could earn yield

No code. No spreadsheets. Agents do the heavy lifting.

Non‑custodial by design

Funds remain in your wallet; agents orchestrate routes across protocols.

How it works

Scan.

Continuous scanning & sweeps of lending/pool markets across chains and venues.

Scan.

Continuous scanning & sweeps of lending/pool markets across chains and venues.

Score.

Real‑time scoring of yield upside vs. risk factors (liquidity, TVL drift, volatility, smart‑contract risk proxies, reward emissions, slippage).

Score.

Real‑time scoring of yield upside vs. risk factors (liquidity, TVL drift, volatility, smart‑contract risk proxies, reward emissions, slippage).

Allocate.

Deploys stables across protocols/chains/trading venues via a single, widely‑integrated LLM interface in a fully non‑custodial flow.

Allocate.

Deploys stables across protocols/chains/trading venues via a single, widely‑integrated LLM interface in a fully non‑custodial flow.

Compound.

Auto‑compounds yield & rewards back into your strategy for compounding growth.

Compound.

Auto‑compounds yield & rewards back into your strategy for compounding growth.

Your $10,000 at work

You invested: $10,000.00
Earned with Beep: +$1,731.86
Return: 17.31%

You invested: $10,000.00
Earned with Beep: +$1,731.86
Return: 17.31%

Illustrative results based on historical simulation;not financial advice; performance is not guaranteed.

Beep scans and allocates across these pools.

Auto‑adds new protocols that meet score thresholds.

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Frequently asked questions

How is a402 different from x402 for devs?

a402 starts cross-chain, with identity and programmable access built in. It handles micropayments & trust at agent scale, while x402 is EVM-focused and does not include authorization or reputation.

How does a402 enable high-frequency micropayments?

a402 uses off-chain channels and bulk settlement to let agents make millions of small payments per second, then commit one on-chain final settlement, minimizing costs and latency.

What ecosystems does a402 support beyond EVM?

a402 is natively compatible with SUI, Solana, Polkadot, FedNow and more, letting you build agent payment flows across blockchains or even fiat networks.

PRODUCTS

Agentic yield

Beep pay

MCP-pay

Resources

Docs

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Beep is not a bank, financial institution or a digital asset custodian.

Beep is a financial technology platform that enables eligible businesses to establish a self-custodied digital asset account and conduct transactions using stablecoins through the account.

Balance information denominated in fiat currency is for informational purposes only.

Stablecoins function as claims on the stablecoin issuer for a fixed amount of underlying fiat currency.

Beep is not a stablecoin issuer, does not make any promise (and does not have any obligation) to redeem stablecoins.

Beep does not hold any balance on behalf of its business customers and does not pay interest on digital asset balances.

Eligible business customers may earn rewards from beep based on their use of the beep services and the self-custodied digital asset account.

Yield is variable and not guaranteed. DeFi carries smart-contract and protocol risks. Review docs, your jurisdiction’s regulations before using Beep. Not investment advice.