Pydantic AI

npx skills add AgnostAI/skills --skill agnost-ai

Use the agnost-ai skill to add Agnost AI analytics to this Pydantic AI application.
Org ID: your-org-id
Instrument the real agent.run_sync() or agent.run() path and verify one fresh interaction.

pip install agnost

import agnost

agnost.init("your-org-id")
interaction = agnost.begin(user_id="u-42", agent_name="pydantic-support", input=prompt)
try:
    result = agent.run_sync(prompt)
    interaction.end(output=str(result.output))
except Exception as exc:
    interaction.end(output=str(exc), success=False)
    raise
finally:
    agnost.shutdown()

pip install pydantic-ai logfire

import os, logfire
from pydantic_ai import Agent
from opentelemetry import trace

os.environ["OTEL_EXPORTER_OTLP_ENDPOINT"] = "https://otel.agnost.ai"
os.environ["OTEL_EXPORTER_OTLP_HEADERS"] = "X-Agnost-Org-ID=<your-org-id>"

logfire.configure(send_to_logfire=False)  # required: don't dual-send to Logfire
logfire.instrument_pydantic_ai()

agent = Agent("anthropic:claude-sonnet-4-5", system_prompt="...")

tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("chat-turn") as span:
    span.set_attribute("gen_ai.conversation.id", "sess-123")
    span.set_attribute("user.id", "u-42")
    agent.run_sync("Hello")