---
title: "Changes to Log Spans"
method: POST
path: "/projects/{project_id}/spans"
---

# Changes to Log Spans

`POST /projects/{project_id}/spans`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 3 of 14 revisions.

- **2026-08-13** `344acdc36dbb` — 16 info
- **2026-08-05** `1f7a6a4a81ad` — 1 info
- **2026-07-26** `05003e7835a2` — 1 info

## Changes

- **2026-08-13** `344acdc36dbb` — 16 info
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #2: WorkflowSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #4: RetrieverSpan]/spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
  - added the new optional request property `spans/items/oneOf[subschema #5: ToolSpan]/spans/items/oneOf[subschema #3: LlmSpan]/provider`
- **2026-08-05** `1f7a6a4a81ad` — 1 info
  - added the new optional request property `spans/items/oneOf[subschema #1: AgentSpan]/agent_name`
- **2026-07-26** `05003e7835a2` — 1 info
  - the endpoint scheme security `ClassicAPIKeyHeader` was added to the API

---

[Operation](https://skmtc.dev/galileo/apis/galileo-api-server/docs/projects/:project_id/spans/post.md) · [API](https://skmtc.dev/galileo/apis/galileo-api-server.md) · [Page](https://skmtc.dev/galileo/apis/galileo-api-server/changes/projects/:project_id/spans/post)