Zap as a Service (ZaaS) API

Introducing Zap as a Service API (ZaaS) and Liquidity Widget, streamlining decentralized liquidity provision. Effortlessly add liquidity with a single token for enhanced DeFi engagement.

Overview & Capabilities

ZaaS (Zap as a Service) API lets integrators add one-click liquidity provisioning to any app. Users can enter, exit, or migrate a concentrated liquidity position using any token — no manual ratio calculation, no separate swap-then-deposit flow. The API handles routing through the KyberSwap aggregator and pool internals to minimize price impact automatically.

Base URL: https://zap-api.kyberswap.com/{chain}

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What ZaaS API Can Do

• Zap In — Open a new concentrated liquidity position or increase an existing one using any ERC-20 token or the chain's native token as input. The API automatically swaps and deposits in the correct ratio for the chosen price range.

• Zap Out — Remove liquidity from a position and receive a single output token, in one transaction.

• Zap Migrate — Move liquidity from one pool to another (across DEXes or fee tiers) in a single transaction.

• Any-token input — Input tokens are not limited to the pool's token pair. Pass any ERC-20 (0x...) or native token (0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE).

• Partner fee collection — Integrators can attach a feeAddress and feePcm to any route request to collect a fee from the input token.

• EIP-2612 Permit — The KSZapRouterPositionPermit contract supports gasless approvals so users can skip a separate ERC-20 approval transaction.

• Slippage protection — All routes include minimum output and minimum liquidity thresholds; the contract reverts if on-chain conditions exceed the configured slippage tolerance.

• Capital efficiency — Fallback swaps are executed automatically if the first routing attempt leaves unused capital, maximising position size even in volatile markets.

• 14 supported chains — Arbitrum, Avalanche, Base, BSC, Ethereum, Linea, Optimism, Polygon, Ronin, Scroll, Sonic, Berachain, zkSync, and more. See Supported Chains & DEXes.

• 55+ DEX integrations — Uniswap V3/V4, PancakeSwap V3, Aerodrome, Velodrome, Camelot, SushiSwap, Curve, Balancer, and many others. See DEX IDs.

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When to Use ZaaS API

ZaaS is aimed at builders who want to add liquidity UX to their product without implementing swap routing or pool math themselves:

Audience	Use case
Wallet apps	One-click "Earn" or "Add Liquidity" from any held token
Portfolio managers	Rebalance into an LP position without manual swaps
DEX front-ends	Compete on UX by abstracting away token ratio complexity
Aggregators / meta-dexes	Bundle liquidity provision into a broader swap/invest flow

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Endpoint Index

All endpoints share the base URL https://zap-api.kyberswap.com/{chain}. Pass your X-Client-ID header on every request.

Method	Path	Description
GET	/api/v1/in/route	Preview the best Zap-In route for a given input and target position
POST	/api/v1/in/route/build	Build the on-chain calldata for a Zap-In route
GET	/api/v1/migrate/route	Preview the best Zap-Migrate route from one pool to another
POST	/api/v1/migrate/route/build	Build the on-chain calldata for a Zap-Migrate route
GET	/api/v1/out/route	Preview the best Zap-Out route for exiting a position
POST	/api/v1/out/route/build	Build the on-chain calldata for a Zap-Out route

Rate limiting: Without a whitelisted Client ID, requests are limited to 10 per 10 seconds. Contact [email protected] to request a higher quota.

For full parameter and response schemas, see the API Reference section. For code examples, see the How-to Guides.