Stablecoin infrastructure company Eco on Wednesday launched Sauce SDK, a toolkit that gives outside developers access to the transaction engine it already runs behind its own Routes API.
With Sauce, a developer attaches conditions to a single onchain transaction, such as a minimum amount received, a price limit, a list of approved destinations or a trading algorithm. If the transaction cannot satisfy all of them when it runs, it does not execute and no funds move. The logic is written in TypeScript and checked against live market data inside the transaction itself, so developers do not have to write and deploy a custom smart contract for each use.
Get Unchained’s crypto news in your inbox with the free Unchained Daily newsletter.
Limits for AI Agents
Eco is pitching the SDK partly as guardrails for AI agents. The operator writes the rules into the transaction’s own code, and, Eco says, an agent trading or paying on its behalf cannot step outside them. Coding assistants get their own way in: the kit includes instruction files and skills they can use to build and deploy strategies. For businesses, Eco’s example is a stablecoin payment or treasury rebalance that does not go through if the all-in cost of converting the funds would go past a ceiling the company picked.
CEO Ryne Saxe said in a press release that the tool lets developers and agents turn “single transactions into strategies they can write, test and evolve.”
Sauce supports Ethereum, Solana and Base at launch. Eco did not disclose developer, volume or usage figures.
From Beta to Launch
Parts of the product were public before the announcement. The SDK’s npm package dates to mid-September, and its compiler package has been on npm since August. As of Tuesday, Eco’s Sauce website at sauce.eco.com called the product “live in beta” and available to select partners, with an “audit pending” note in its footer. The company’s developer documentation described Sauce v1 as “closed access.”
Eco was a consumer digital wallet when it raised a $60 million Series B in July 2021, in a round Activant Capital and L Catterton led together. It has since moved into stablecoin routing, launching Routes in beta in December 2024.
Unchained reported earlier this month on an OpenAI model that paid Ethereum testnet fees from a wallet it was not given.
Related Listen: How 217 Billion AI Agent Transactions a Day Could 20X the Crypto Market
The post Eco’s New Sauce Developer Kit Keeps AI Agents’ Transactions Within Operator-Set Limits appeared first on Unchained.
Powered by WPeMatico
