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@jjbayer jjbayer commented Dec 3, 2025

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We will allow ingesting trace attachments that are not owned by spans. This PR splits the span attachment dev docs into a generic part for the attachment item, and a specific part for span attachments.

See https://linear.app/getsentry/issue/INGEST-654/.

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@jjbayer jjbayer marked this pull request as ready for review December 3, 2025 09:47
@jjbayer jjbayer requested review from a team, Lms24, cleptric and tobias-wilfert December 3, 2025 09:47

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `trace_id` | string | Yes | The trace ID. Determines which `trace` the attachment belongs to. 32-character hexadecimal string. |
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So to send a span attachment one needs to set both the span_id in the header and the trace_id in the meta?

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Yes.

Comment on lines +128 to +135
```json
{
"type": "attachment",
"content_type": "application/vnd.sentry.attachment.v2",
"length": 212341234,
"meta_length": 123
}
```
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Bug: The envelope-items.mdx documentation for trace attachment item headers is incomplete, omitting span_id.
Severity: HIGH | Confidence: High

🔍 Detailed Analysis

The envelope-items.mdx documentation for trace attachment item headers is incomplete. It omits span_id from the example (lines 128-135) and does not mention it as an optional field. This contradicts span-protocol.mdx, which specifies span_id as an additional item header for span attachments. This inconsistency could lead SDK developers to implement trace attachments without span_id support, breaking span attachment functionality.

💡 Suggested Fix

Update envelope-items.mdx to either include span_id in the item header example (lines 128-135) and mark it as optional, or add a note explicitly stating span_id is an optional field.

🤖 Prompt for AI Agent
Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location: develop-docs/sdk/data-model/envelope-items.mdx#L128-L135

Potential issue: The `envelope-items.mdx` documentation for trace attachment item
headers is incomplete. It omits `span_id` from the example (lines 128-135) and does not
mention it as an optional field. This contradicts `span-protocol.mdx`, which specifies
`span_id` as an additional item header for span attachments. This inconsistency could
lead SDK developers to implement trace attachments without `span_id` support, breaking
span attachment functionality.

Did we get this right? 👍 / 👎 to inform future reviews.
Reference ID: 5130085

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I deliberately did not document the header here to avoid confusion.

@jjbayer jjbayer merged commit 8288fc8 into master Dec 4, 2025
14 checks passed
@jjbayer jjbayer deleted the feat/trace-attachments branch December 4, 2025 08:29
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3 participants