AUDR (Agent Usage Detail Record) by Chargebee is an open standard, licensed under Apache 2.0, for capturing who initiated an agent run and what it cost across every system that run touches. Inspired by the telecom industry's Call Detail Record, AUDR defines a common JSON schema that any harness, router, or billing system can emit and ingest.
AUDR by Chargebee
Open standard for tracking agent run costs

AUDR by Chargebee Introduction
Key Features
- Open JSON schema standard for recording agent run costs and initiators
- Shared run ID minted by the harness to correlate records across systems
- Clear field ownership across emitting systems
- Strict merge rules: conflicts are rejected and corrections are recorded as new records
- Open source under the Apache 2.0 license
Use Cases
- Tracking costs of AI agent runs across multiple systems and tools
- Attributing agent usage to the initiating user or system
- Enabling billing and routing systems to ingest standardized agent usage records
Why Startups Use It
Startups building with AI agents need a consistent way to attribute and track run costs across harnesses, routers, and billing systems. AUDR's open JSON schema and Apache 2.0 license let teams adopt a shared standard without vendor lock-in.
Frequently Asked Questions
What is AUDR?
AUDR (Agent Usage Detail Record) is an open standard for capturing who initiated an agent run and what it cost across every system that run touches.
Is AUDR free to use?
AUDR is an open standard released under the Apache 2.0 license.
What inspired AUDR?
AUDR is inspired by the telecom industry's Call Detail Record (CDR).
More About AUDR by Chargebee
PricingPaid
Listed DateOct 07, 2026
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