Files
awesome-copilot/skills/phoenix-tracing/references/span-chain.md
Jim Bennett d79183139a Add Arize and Phoenix LLM observability skills (#1204)
* Add 9 Arize LLM observability skills

Add skills for Arize AI platform covering trace export, instrumentation,
datasets, experiments, evaluators, AI provider integrations, annotations,
prompt optimization, and deep linking to the Arize UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add 3 Phoenix AI observability skills

Add skills for Phoenix (Arize open-source) covering CLI debugging,
LLM evaluation workflows, and OpenInference tracing/instrumentation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Ignoring intentional bad spelling

* Fix CI: remove .DS_Store from generated skills README and add codespell ignore

Remove .DS_Store artifact from winmd-api-search asset listing in generated
README.skills.md so it matches the CI Linux build output. Add queston to
codespell ignore list (intentional misspelling example in arize-dataset skill).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add arize-ax and phoenix plugins

Bundle the 9 Arize skills into an arize-ax plugin and the 3 Phoenix
skills into a phoenix plugin for easier installation as single packages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Fix skill folder structures to match source repos

Move arize supporting files from references/ to root level and rename
phoenix references/ to rules/ to exactly match the original source
repository folder structures.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Fixing file locations

* Fixing readme

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-02 09:58:55 +11:00

1.3 KiB

CHAIN Spans

Purpose

CHAIN spans represent orchestration layers in your application (LangChain chains, custom workflows, application entry points). Often used as root spans.

Required Attributes

Attribute Type Description Required
openinference.span.kind String Must be "CHAIN" Yes

Common Attributes

CHAIN spans typically use Universal Attributes:

  • input.value - Input to the chain (user query, request payload)
  • output.value - Output from the chain (final response)
  • input.mime_type / output.mime_type - Format indicators

Example: Root Chain

{
  "openinference.span.kind": "CHAIN",
  "input.value": "{\"question\": \"What is the capital of France?\"}",
  "input.mime_type": "application/json",
  "output.value": "{\"answer\": \"The capital of France is Paris.\", \"sources\": [\"doc_123\"]}",
  "output.mime_type": "application/json",
  "session.id": "session_abc123",
  "user.id": "user_xyz789"
}

Example: Nested Sub-Chain

{
  "openinference.span.kind": "CHAIN",
  "input.value": "Summarize this document: ...",
  "output.value": "This document discusses..."
}