OpenInference Anthropic Instrumentation

Python autoinstrumentation library for the Anthropic package

This package implements the following Anthropic clients:

Messages
AsyncMessages
BetaMessagesParse
AsyncBetaMessagesParse

These traces are fully OpenTelemetry compatible and can be sent to an OpenTelemetry collector for viewing, such as Arize Phoenix or Arize AX.

Compatibility

`openinference-instrumentation-anthropic`	`anthropic`	Python
`>=2.1.6`	`>=1.0.0`	`>=3.10, <3.15`
`2.1.5`	`>=1.0.0, <1.8`	`>=3.10, <3.15`
`>=2.0, <2.1.5`	`>=1.0.0, <1.5`	`>=3.10, <3.15`
`>=1.0.1, <2.0`	`>=0.84.0, <1.0`	`>=3.10, <3.15`
`1.0.0`	`>=0.84.0, <1.0`	`>=3.9, <3.15`

Anthropic 1.0 removed the legacy Text Completions API. Instrumentor 2.0 therefore requires anthropic>=1.0.0 and instruments the Messages and Beta Messages APIs. See Anthropic's v1 migration guide for the upstream breaking changes.

Installation

pip install openinference-instrumentation-anthropic

Quickstart

Through your terminal, install required packages.

pip install openinference-instrumentation-anthropic anthropic arize-phoenix opentelemetry-sdk opentelemetry-exporter-otlp

You can start Phoenix with the following terminal command:

python -m phoenix.server.main serve

By default, Phoenix listens on http://localhost:6006. You can visit the app via a browser at the same address. (Phoenix does not send data over the internet. It only operates locally on your machine.)

Try the following code in a Python file.

Set up AnthropicInstrumentor to trace your application and sends the traces to Phoenix.
Then, set your Anthropic API key as an environment variable.
Lastly, create a Anthropic client, make a request, then go see your results in Phoenix at http://localhost:6006!

import os
from anthropic import Anthropic
from openinference.instrumentation.anthropic import AnthropicInstrumentor
from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk import trace as trace_sdk
from opentelemetry.sdk.trace.export import SimpleSpanProcessor

# Configure AnthropicInstrumentor with Phoenix endpoint
endpoint = "http://127.0.0.1:6006/v1/traces"
tracer_provider = trace_sdk.TracerProvider()
tracer_provider.add_span_processor(SimpleSpanProcessor(OTLPSpanExporter(endpoint)))

AnthropicInstrumentor().instrument(tracer_provider=tracer_provider)

os.environ["ANTHROPIC_API_KEY"] = "YOUR_KEY_HERE"

client = Anthropic()

response = client.messages.create(
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": "Tell me about the history of Iceland!",
        }
    ],
    model="claude-3-opus-20240229",
)
print(response)

Now, on the Phoenix UI on your browser, you should see the traces from your Anthropic application. Click on a trace, then the "Attributes" tab will provide you with in-depth information regarding execution!

More Info

Metadata

Release files for openinference-instrumentation-anthropic 2.1.6

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Source distribution (sdist)

Source distribution for openinference-instrumentation-anthropic 2.1.6
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Table of built distributions (wheels) for openinference-instrumentation-anthropic 2.1.6
File	Interpreter	ABI	Platform	Reset
openinference_instrumentation_anthropic-2.1.6-py3-none-any.whl 22.3 kB Sep 24, 2026	Python 3	none	any	Details

Total release size: 41.1 kB

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Uploaded via	`twine/7.0.0 CPython/3.13.14`

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Publishing repository: github.com/Arize-ai/openinference
Publishing commit: github.com/Arize-ai/openinference/tree/1bdcb086969226680381156a480f43a2b5f30048

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