SHACKLE
SHACKLE is a runtime governance layer and conformance standard for autonomous AI agents, enforcing guardrails, budget/loop limits, and policy constraints in real time.
SHACKLE
What is SHACKLE?
SHACKLE vs Similar AI Tools
| Pricing Model | Free, Custom Pricing | Free, Freemium | Free | Free |
| Free Credits | ||||
| Key Features |
|
|
|
|
| Pros |
|
|
|
|
| Cons |
|
|
|
|
| Best For |
|
|
|
|
How to use SHACKLE?
- 1Install via pip install pyshackle or clone from source.
- 2Import from shackle import Guard.
- 3Decorate your agent workflow function with @Guard(budget=0.25, max_repeat_calls=3, timeout_seconds=180).
- 4Run the function as usual; SHACKLE automatically hooks into the underlying framework (CrewAI, LangGraph, AutoGen, etc.).
- 5When a circuit breaker trips, an interactive HITL console appears with Resume/Skip/Abort options.
SHACKLE Key Features
- Loop of Death prevention via identical sequential tool call detection
- Real-time budget enforcement with client-side token tracking
- Execution timeouts to prevent hung threads on dead APIs
- Human-in-the-loop (HITL) interactive terminal console
- Verifiable conformance standard (SP/1.0) with 15 hash-checked fixtures
- First-class integrations with LiteLLM and AutoGen
- 100% client-side, no telemetry or phone-home
- One-line installation with no refactoring of agent topology
SHACKLE Use Cases
- Local development and debugging of AI agents
- CLI agents and supervised workflows with HITL control
- Cross-framework governance across CrewAI, LangGraph, and AutoGen
- Budget enforcement to prevent runaway API costs
- Iterative testing and catching loops early in development
SHACKLE Pricing & Free Credits
SHACKLE currently operates on a Free, Custom Pricing model.
AGPLv3 (Free)
Free
Open-source license for individual developers, hobbyists, and open-source projects. V1 includes all core features.
Commercial License
Contact for Pricing
For closed-source commercial products, SaaS, or enterprise deployments. Includes white-labeling, priority support, and custom integration assistance.
V2 Enterprise (Optional)
Contact for Pricing
Adds distributed state, Postgres audit logs, remote HITL control, and commercial licensing for production deployments.
SHACKLE Pros & Cons
Pros
- Prevents runaway costs and infinite loops in AI agents
- Easy one-line integration with popular frameworks
- Open standard with verifiable conformance testing
- Fully client-side with no external dependencies or telemetry
Cons
- AGPLv3 license requires open-sourcing for closed-source use
- HITL console not suitable for headless production APIs
- V2 enterprise features require separate contact for pricing
What is SHACKLE best for?
- Developers building autonomous AI agents
- Teams needing runtime safety and cost controls
- Organizations seeking verifiable governance for compliance
SHACKLE FAQ
Top free alternatives to SHACKLE
Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.
Automate repetitive browser tasks by recording screen actions or describing with chat, turning them into reusable workflows, smart tables, and custom apps.
SureWire is a specialized QA platform that stress-tests AI agents for safety, reliability, and compliance using purpose-built testing agents.
Browser infrastructure platform for AI agents to run on the internet at speed with cloud browser sessions, agents, and serverless functions.
Manifest converts any URL into a structured JSON map of what AI agents can interact with on a page—buttons, forms, inputs, and required fields.
Agentcard provides agent-friendly card issuing and payment infrastructure for AI agents, enabling 5-minute setup and autonomous purchases.
Manage AI agent teams like human teams with responsibilities, numbers, commitments, and approvals across your business tools.
Oodle AI provides agent observability with fast trace search, S3-based storage, and out-of-the-box insights to detect silent failures in AI agents.
Best alternatives AI Tools to SHACKLE
Multi-agent workflow platform that builds and runs workflows from plain English prompts, integrating 1000+ apps and 50+ AI models.
A collection of deliberately vulnerable MCP servers for training in agentic security, mapped to the OWASP Top 10 for Agentic Applications.
Open-source AI tool for deep infrastructure research, running frontier models across code, cloud, and runtime to deliver verified answers.
Terminal UI to manage AI coding-agent sessions (Claude Code, OpenCode, Codex, Grok Build) in tmux with live status, group tree, and diff review.
Self-hostable sandbox SDK for AI agents that provides isolated environments with key management and egress control on your own hardware.
Open-source desktop app to manage multiple project workspaces simultaneously, keeping terminals and AI coding agents running across projects with instant switching.
A macOS menu-bar app that gives AI agents the ability to draw directly on your screen via MCP.
A desktop app that transforms AI coding agents into a visual Kanban build loop for feature development with human review.