phoenix

varize-phoenix-v15.9.0 scope: arize-phoenix Feature

This release adds 1 notable feature for engineering teams evaluating rollout.

Published 20d Tracing

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✓ No known CVEs patched in this version

Topics

agents ai-monitoring ai-observability aiengineering anthropic datasets

+10 more

evals langchain llamaindex llm-eval llm-evaluation llmops llms openai prompt-engineering smolagents

ReleasePort's take

Light signal

editorial:auto 13d

Phoenix v15.9.0 backfills TOOL spans for agent external tool returns and fixes handling of invalid GraphQL node IDs.

Why it matters: Agents now emit complete TOOL spans for external tool performance visibility; GraphQL queries with invalid node IDs are handled gracefully. Standard maintenance upgrade.

Summary

AI summary

Backfill TOOL spans for external tool returns and fix handling of invalid GraphQL node IDs.

Changes in this release

Type	Severity	Summary	CVE
Feature	Medium	agents backfill TOOL spans for external tool returns in agent wrapper agents backfill TOOL spans for external tool returns in agent wrapper Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	agent clarify PXI remote trace sharing consent agent clarify PXI remote trace sharing consent Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	handle invalid GraphQL node ids handle invalid GraphQL node ids Source: llm_adapter@2026-05-21 Confidence: low	—
Other	Medium	skills weekly audit — 2026-05-13 skills weekly audit — 2026-05-13 Source: llm_adapter@2026-05-21 Confidence: low	—

Full changelog

15.9.0 (2026-05-14)

Features

agents: backfill TOOL spans for external tool returns in agent wrapper (#13185) (4b221b9)

Bug Fixes

agent: clarify PXI remote trace sharing consent (#13219) (f5da114)
handle invalid GraphQL node ids (#13210) (35c8f3d)

Documentation

skills: weekly audit — 2026-05-13 (#13214) (8349361)

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Earlier breaking changes

varize-phoenix-v17.0.0 Adds system settings for admin-managed assistant enablement and trace recording policy
varize-phoenix-v16.0.0 Sandboxing and Code Evaluators introduce breaking changes in Phoenix v16.0.0.
varize-phoenix-v15.7.0 Removes v1 /chat route and associated code