What does an agent harness feel like when every model turn goes through Anthropic’s Batch API instead of the synchronous endpoint?
Batches are 50% off. For anyone burning real money on agents (eval suites, background subagents, anything that runs unattended), half-price tokens are the kind of number that makes you stop and squint. The trade is latency: batches are asynchronous, with up to a 24-hour processing window.
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Last Wednesday (Sep 10), I had the chance to attend a hackathon at Cursor’s offices - huge thanks to the Cursor team for hosting such a great event! 🙌 The focus was on Cursor CLI and their new Background Agents API.
When I started brainstorming ideas, I came across Eric’s post about running various rules during CI/CD to automate checks and actions. It got me thinking — setting up those rules often involves a lot of repetitive work: crafting similar prompt setups and then defining the actions themselves.
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