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About is it still maintained?
lastseen.dev operates as an independent temporal notary for software components and agent infrastructure. It maintains a dated, append-only register that records whether software components, such as MCP servers, npm packages, GitHub Actions, and Docker images, are still being maintained, along with the dates those checks were performed. The service lets users paste a repository, organization, or package.json to see which dependencies have stopped being maintained. Every observation is sealed into a daily SHA-256 hash chain, with public endpoints and verification instructions allowing independent recomputation of the chain head. The service offers free lookups without login or account, and read endpoints accept an as_of date parameter to return observations as they appeared at a specified time.
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