Cost Control Python Packages

langchain-runcycles

LangChain agent middleware for Cycles — pre-tool-call authorization and per-tenant budget enforcement for Python agents using create_agent

agentguard47

Your AI agent just burned $200. AgentGuard stops it at $5. Runtime cost guardrails for AI agents — budget enforcement, loop detection, kill switch. Zero dependencies, MIT licensed.

veronica-core

Runtime containment kernel for LLM agents. Enforces budget, step, retry, and circuit-breaker limits before the model call.

runcycles

Python SDK for Cycles — reserve, commit, release budget and risk for AI agents

magicrails

🛑 Emergency brake for AI agents. Hard budget caps, loop detection, and state-stasis guards in 3 lines of Python. Stops runaway agents before the $500 overnight invoice.

veloryn

Deterministic cost-bounded execution for multi-step LLM workflows

runcycles-openai-agents

Runtime budget, action, and audit authority for the OpenAI Agents SDK — enforce LLM cost limits, tool call caps, and audit trails before execution.

shekel

LLM budget control and cost governance for AI agents. Python library for token budgets, usage limits and guardrails for OpenAI, Anthropic, LangChain, LangGraph and agentic systems.

langchain-kavachos

The kill-switch between your AI agents and your credit card. Agentic spend governance for Claude Code, OpenAI Codex, and any JSONL-logging agent.

crewai-kavachos

The kill-switch between your AI agents and your credit card. Agentic spend governance for Claude Code, OpenAI Codex, and any JSONL-logging agent.

costcutter

A kill-switch for AWS that automatically deletes resources when spending limits are breached.

enzu

Budgeted LLM task orchestration with hard limits and long-context RLM.

tokvigil

Application-layer AI usage control platform with SDKs and a policy engine to enforce budgets, limits, and audit logs per user, feature, and plan.