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Ozmium Base Mainnet Swap (CDP Trade API)
x402
Ozmium Base Mainnet Swap (CDP Trade API) is a paid API for AI agents from ozmium.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns unsigned swap transaction + permit2 payload for a Base mainnet token swap, quoted via Coinbase CDP Trade API, ready for agent-side signing.
Price / call$0.01
Success—
StatusUnknown
How this service works
Executable Base mainnet swap via the Coinbase CDP Trade API: returns the unsigned transaction + permit2 payload exactly as CDP quotes it; the agent signs with its own wallet. POST /v1/tx/swap { fromToken, toToken, fromAmount (atomic), taker, signerAddress?, slippageBps? }.
Output
Returns the unsigned transaction object and permit2 payload exactly as quoted by the Coinbase CDP Trade API, including calldata, to, value, and any permit2 signature requirements — ready for the agent to sign with its own wallet and broadcast.
Example use cases
Rebalance agent portfolio on Base
“I need to rebalance my agent wallet on Base — swap 500000000 USDC (atomic units) into ETH for address 0xDef...456, with 30 bps slippage. Give me the unsigned transaction and permit2 payload so my agent can sign and broadcast it.”
DCA into WBTC using USDC
“Execute a dollar-cost average buy for my agent wallet 0x123...789 on Base mainnet — swap 250000000 USDC (atomic units) into WBTC with a 25 bps slippage tolerance. Return the unsigned transaction and permit2 payload ready for signing.”
Convert yield tokens back to stablecoin
“My agent just harvested yield tokens on Base and needs to convert them back to USDC — swap 1000000000000000000 AERO (atomic units) to USDC for wallet 0xABC...DEF with 100 bps slippage. Give me the raw unsigned transaction and permit2 payload to sign on my end.”
Technical details
Endpoint
POSThttps://ozmium.org/v1/tx/swapWhen to prefer
Use this endpoint when an AI agent needs to swap tokens on Base mainnet and wants the raw unsigned transaction + permit2 payload to sign itself, specifically leveraging Coinbase CDP Trade API routing. Prefer over generic DEX aggregators when operating within the Coinbase/Base ecosystem or when agent-side signing with permit2 is required.
Side effects
- Invalid token address returns 400 or empty quote
- fromAmount too small for routing returns no-route error
- taker address malformed returns validation error
- Slippage too tight causes quote failure
- CDP Trade API downstream unavailability returns 5xx
- Payment of $0.02 USDC not included causes 402 rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| taker | string | |
| toToken | string | |
| fromToken | string | |
| fromAmount | string | |
| slippageBps | number |
Tags
x402
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