Overview / Description
Costile is an open-source AI agent diagnostic layer that turns runaway AI spending into actionable root-cause reports with recommended fixes. It sits between your code and the Anthropic or OpenAI APIs, monitoring agent behavior, request patterns, and cost trajectories in real time. When AI agents burn through budget unexpectedly, Costile captures request evidence, projects exposure, and identifies the specific agents or loops responsible. It can enforce daily and monthly spending caps, automatically stopping further API calls once limits are reached. Self-hostable under the MIT license with enterprise cloud options available — no code changes required for basic integration.
Used For
AI tool for chat bot workflows
Pricing
Pros & Cons
Pros
• Root-cause reports identify exactly which AI agents or loops are burning API budget • Captures request evidence as a full audit trail of excessive API usage • Enforces daily and monthly spending caps to prevent runaway AI costs • Self-hostable under MIT license with no vendor lock-in • Projected exposure estimates help teams proactively budget AI spend
Cons
• Requires proxy setup between your application and the OpenAI or Anthropic API • Self-hosted setup may need DevOps resources for initial configuration • Enterprise cloud pricing not publicly disclosed • Diagnostic tool only — does not directly optimize or fine-tune AI agent behavior
Questions & Answers
Alternatives
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