Read what ships.

01Dropbox · architecture

Evolving our calendar assistant Reclaim to be AI-native without starting over

Dropbox engineers evolved their calendar assistant, Reclaim, to support natural-language AI requests by building a custom agent platform that integrates with existing scheduling logic. They utilized a shared action system and a Preview Mode backed by Redis to ensure AI suggestions are consistent and reviewable before affecting real calendars. This approach allows the product to adopt AI capabilities without fragmenting its core architecture or duplicating functionality.

DEPTH ■■■■■7 min read3 weeks ago

InfrastructureMachine Learning

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02Heroku · architecture

Front-End Web Deep Dive: Runtime Config

Front-end web applications traditionally bake environment variables into build artifacts, requiring a full rebuild to change configurations across environments. To solve this, a new approach injects runtime environment variables directly into the HTML document's head element as data attributes via a Cloud Native Buildpack. This enables zero-rebuild configuration changes while remaining compatible with browser security standards like CSP.

DEPTH ■■■■■3 min read10 days ago

Frontend

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03Stripe · practice

Why I tried to kill token billing (and why we kept it)

The author examines the limitations of token-based billing as a customer-facing pricing model, noting that it exposes internal margins and commoditizes AI products. The company explored abandoning token billing entirely but realized its necessity for backend cost tracking and margin management. Ultimately, the piece proposes unified credits and output-based pricing as better ways to align invoices with customer value.

DEPTH ■■■■■7 min read3 weeks ago

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