Arize Phoenix
Arize Phoenix is an open-source AI observability and evaluation platform built on OpenTelemetry, enabling developers to trace, evaluate, and debug LLM applications in production or locally. Phoenix exposes a REST API for programmatically ingesting spans and traces, managing datasets, running experiments, submitting annotations, and querying evaluation results. The platform supports a wide range of LLM frameworks including LangChain, LlamaIndex, OpenAI, Anthropic, and CrewAI through auto-instrumentation. Phoenix can be self-hosted in a single command or used as a managed cloud service (Arize AX), with authentication via API keys and OAuth2/OIDC for enterprise deployments.
Arize Phoenix publishes 17 APIs on the APIs.io network, including annotation_configs API, annotations API, Arize Phoenix Version API, and 14 more. Tagged areas include LLM Observability, AI Evaluation, OpenTelemetry, Tracing, and LLMOps.
The Arize Phoenix catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.
Arize Phoenix’s developer surface includes documentation, engineering blog, pricing, and 9 more developer resources.
Kin Score
APIs 17
Individual APIs this provider publishes, each with its own machine-readable definition.
Arize Phoenix annotation_configs API
The annotation_configs API from Arize Phoenix — 3 operation(s) for annotation_configs.
Arize Phoenix annotations API
The annotations API from Arize Phoenix — 3 operation(s) for annotations.
Arize Phoenix Arize Phoenix Version API
The Arize Phoenix Version API from Arize Phoenix — 1 operation(s) for arize phoenix version.
Arize Phoenix Auth API
The Auth API from Arize Phoenix — 6 operation(s) for auth.
Arize Phoenix chat API
The chat API from Arize Phoenix — 2 operation(s) for chat.
Arize Phoenix datasets API
The datasets API from Arize Phoenix — 9 operation(s) for datasets.
Arize Phoenix experiments API
The experiments API from Arize Phoenix — 8 operation(s) for experiments.
Arize Phoenix Healthz API
The Healthz API from Arize Phoenix — 1 operation(s) for healthz.
Arize Phoenix Oauth2 API
The Oauth2 API from Arize Phoenix — 2 operation(s) for oauth2.
Arize Phoenix projects API
The projects API from Arize Phoenix — 2 operation(s) for projects.
Arize Phoenix prompts API
The prompts API from Arize Phoenix — 8 operation(s) for prompts.
Arize Phoenix Readyz API
The Readyz API from Arize Phoenix — 1 operation(s) for readyz.
Arize Phoenix secrets API
The secrets API from Arize Phoenix — 1 operation(s) for secrets.
Arize Phoenix sessions API
The sessions API from Arize Phoenix — 5 operation(s) for sessions.
Arize Phoenix spans API
The spans API from Arize Phoenix — 6 operation(s) for spans.
Arize Phoenix traces API
The traces API from Arize Phoenix — 4 operation(s) for traces.
Arize Phoenix users API
The users API from Arize Phoenix — 3 operation(s) for users.
Scroll for all 17
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Phoenix Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals for API financial operations.
Phoenix Finops
FINOPSSemantic Vocabularies 1
JSON-LD contexts and semantic vocabularies used across these APIs.
Phoenix Context
JSON-LDSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Arize Phoenix API Rules
SPECTRALJSON Schema 10
Standalone JSON Schema definitions for this provider's data models.
AnnotateSpansRequestBody
JSON SCHEMAAnnotateSpansResponseBody
JSON SCHEMAAnnotationResult
JSON SCHEMADataset
JSON SCHEMADatasetVersion
JSON SCHEMAExperiment
JSON SCHEMAExperimentRun
JSON SCHEMAProject
JSON SCHEMASpan
JSON SCHEMASpanAnnotation
JSON SCHEMAScroll for all 10
Examples 4
Example request and response payloads for these APIs.
Phoenix Create Span Example
EXAMPLESecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type