JSON Format for API Breaking Changes and Deprecation Notifications
ChangeSpec
JSON Format for API Breaking Changes and Deprecation Notifications
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What it does
ChangeSpec introduces an open, Apache 2.0 licensed JSON event format designed to standardize notifications for API breaking changes, deprecations, CVE advisories, and supply-chain retractions. It aims to replace the current fragmented communication methods (blogs, emails, changelogs) with a single, machine-readable format. This allows developers, automated agents, and compliance teams to directly consume critical API change information, enabling features like CI deployment gates, inline IDE warnings, and automated code patching via AI assistants. Reference implementations are available in Go, TypeScript, and Python.
Who it helps
API providers (e.g., Stripe, Vercel) needing to communicate changes, developers consuming external APIs, and compliance teams requiring audit logs. It also serves tool developers building integrations for API change management.
Why it's interesting
ChangeSpec addresses a significant and recurring pain point for both API producers and consumers by proposing a universal standard for critical API change notifications. Its open-source nature and existing reference implementations foster adoption, while its design for direct consumption by automated tools, CI pipelines, and even AI assistants positions it as a foundational piece for modern developer workflows. If widely adopted, it could dramatically improve developer experience and reduce production incidents.
Card stats
AI-assisted scores estimated from public website information only.
FounderDeck estimate
Medium confidenceThis FounderDeck estimate reflects ChangeSpec's clear articulation of a significant pain point for API providers and consumers, offering a well-defined, open-source JSON standard with reference implementations. The project demonstrates strong product clarity and polish, addressing a widespread need for standardized API change notifications. The $150,000 estimate acknowledges its foundational utility and readiness for production, while recognizing the absence of an explicit direct monetization strategy or a commercial entity built around the standard, which limits a higher valuation at this stage.
Valuation date: 2026-06-05. Estimate generated from public signals.
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