Segment's HTTP API Accepts Invalid Track Calls Without Warning Developers

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Segment's HTTP Tracking API returns a 200 OK response even when required fields are missing from a track call, silently dropping the event before it reaches any downstream destination. The track specification requires an event name, but the collector accepts payloads without one, offering no error feedback. Similarly, calls lacking both a userId and anonymousId are accepted despite Segment requiring at least one identifier on every call. Timestamps must be formatted as ISO 8601 strings, yet numeric epoch values also pass through without rejection. An open-source linter called Pixellint can statically validate these payloads against Segment's published spec, surfacing such errors before data is lost in production.

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