Short Expiry

Chain	Short expiry	Standard expiry
Ethereum	5s	75s
Arbitrum	3s	60s
Base	3s	60s
BSC	3s	60s
Polygon	N/A	60s
Optimism	N/A	60s
Hyperevm	N/A	60s
Avalanche	N/A	60s
Solana	N/A	90s

Chain

Short expiry

Standard expiry

Ethereum

75s

Arbitrum

60s

Base

60s

BSC

60s

Polygon

N/A

60s

Optimism

N/A

60s

Hyperevm

N/A

60s

Avalanche

N/A

60s

Solana

N/A

90s

Requesting Short Expiry Quotes

Pass expiry_type=short when calling /v3/quote:

curl "https://api.bebop.xyz/pmm/ethereum/v3/quote?\
  buy_tokens=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48&\
  sell_tokens=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2&\
  sell_amounts=1000000000000000000&\
  taker_address=0xYOUR_ADDRESS&\
  expiry_type=short" \
  -H "Authorization: Bearer YOUR_API_KEY"

The returned quote will have a shorter validity window matching the chain-specific durations above. Your transaction must be included in a block within that window. Signing and broadcasting alone is not enough. If your transaction doesn’t land in the target block, you may need to increase your gas price. Note that even a higher fee may not guarantee inclusion if the block is full (e.g. due to MEV bundles).

Using with the Price API

If you use the Price API for indicative pricing before requesting firm quotes, make sure the expiry types match. Subscribe to the short expiry stream by including expiry_type=short in the WebSocket URL, so the indicative prices you receive reflect the same pricing that /v3/quote will return.

Mixing expiry types between the Price API stream and firm RFQ quotes will give you inaccurate pre-trade estimates. See Quote Expiry for details.

	Short expiry	Standard expiry
Pricing	Tighter spreads	Slightly wider spreads
Execution window	Transaction must be included in a block before expiry; may require aggressive gas pricing	More time to manage signing and submission
Best for	Latency-sensitive integrations	Most integrators

Short expiry

Standard expiry

Pricing

Tighter spreads

Slightly wider spreads

Execution window

Transaction must be included in a block before expiry; may require aggressive gas pricing

More time to manage signing and submission

Best for

Latency-sensitive integrations

Most integrators

Introduction

Core Concepts

RFQ API

BopAMM

Aggregation API

Price API

Trade History API

Expiry Windows by Chain

Requesting Short Expiry Quotes

Using with the Price API

Trade-offs

​Expiry Windows by Chain

​Requesting Short Expiry Quotes

​Using with the Price API

​Trade-offs

Expiry Windows by Chain

Requesting Short Expiry Quotes

Using with the Price API

Trade-offs