SSE Data Viewer

Parse pasted SSE data and reconstruct OpenAI and Claude replies, tool arguments and token usage.

FreeBrowser

Select a model protocol to reconstruct replies, or inspect the events below.

Stream JSON array
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About SSE Data Viewer

Paste captured Server-Sent Events from a model API to inspect event boundaries and reconstruct text. Analyze an existing OpenAI or Claude-style stream without sending a new model request.

How to use SSE Data Viewer

  1. Paste the captured SSE text.
  2. Select or inspect the recognized protocol and parse the events.
  3. Review event details and copy the reconstructed response.

Input and output example

Input and settings
data: {"choices":[{"delta":{"content":"Hello"}}]}

data: [DONE]

Expected output
Reconstructed response: Hello

When to use this tool

  • Inspect a stream copied from a network log.
  • Debug content assembly without another paid model call.

Limits to know before using it

Only captured content is available for inspection. Missing events cannot be recovered, and timing or token usage cannot be inferred reliably when absent from the source.

Data handling and cost

The main operation runs in your browser; tool input is not uploaded for processing. The site can still use session cookies and collect operational or usage data as described in the privacy policy.

Free to use in your browser, with no sign-in needed.

Frequently Asked Questions

No. It parses pasted text/event-stream content locally in your browser and does not make network requests.

Each event data payload is parsed as JSON when possible. Valid JSON renders as a collapsible tree; non-JSON payloads stay as raw text.

Yes. Consecutive data lines are joined with newlines following the SSE format, then parsed as one complete JSON document when possible.

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