Prefactor for OpenAI Agents SDK — Observability, Cost, and Governance

What you get

• End-to-end tracing of every Agent, tool call, and LLM invocation
• Per-OpenAI Agents SDK-agent, per-user, per-tenant cost attribution
• Runtime policy enforcement — block, route, or approve tool calls
• Tamper-evident audit logs aligned to SOC 2, ISO 42001, and EU AI Act expectations
• Outcome evaluation with regression detection on every change
• Works with OpenAI Agents SDK in production today

Install and integrate

pip install prefactor-openai-agents

from openai_agents import Agent, run
from prefactor import Prefactor

pf = Prefactor(api_key="pf_live_...")
agent = pf.wrap(Agent(...), agent_id="customer-support-v1")
result = await run(agent, input="...")

Common problems Prefactor solves for OpenAI Agents SDK teams

1. Built-in tracing is OpenAI-platform-bound and developer-focused

2. No native cross-vendor model support in traces

3. Policy enforcement (approval flows, spend caps) is bring-your-own

4. Audit logging requires custom export

5. Evals run separately from production telemetry

Supported capabilities

FAQ

Does Prefactor route my OpenAI Agents SDK traffic through a proxy? No. Prefactor instruments via SDK. Your LLM calls go directly to your model provider. We never sit in the request path.

Will Prefactor add latency to my OpenAI Agents SDK agent? The SDK adds ~2-5ms per traced span. Telemetry ships asynchronously in batches. No synchronous network call to Prefactor in your hot path unless you opt into blocking policy enforcement.

Can I use Prefactor alongside other tools (Langfuse, LangSmith, etc.)? Yes. They solve different problems and don't conflict. Many teams use Prefactor as the governance layer and keep dev-time tracing tools for prompt iteration.

Is Prefactor self-hostable? Yes, on Business and Enterprise plans. Data plane and control plane can both run in your VPC.

How do I add Prefactor to an existing production OpenAI Agents SDK app? The wrap pattern is non-invasive. One line changed. Existing tests, chains, and tools work unchanged.

Related

• Observability for OpenAI Agents SDK →
• Monitoring for OpenAI Agents SDK →
• Cost Tracking for OpenAI Agents SDK →
• Policy Enforcement for OpenAI Agents SDK →
• Audit Logging for OpenAI Agents SDK →
• What is Agent Observability? →
• How to Prevent Runaway Agent Costs →

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