Custos — The bouncer for your AI agents vs Fluree AI
Comprehensive feature analysis, ratings breakdown, platform compatibility, and community review comparison.
Custos — The bouncer for your AI agents
Stop AI agents from doing things they shouldn't.
Detailed Feature Comparison Matrix
Compare Other Tools| Dimension | Custos — The bouncer for your AI agents |  Fluree AI |
|---|---|---|
| Primary Category | Developer Tools | Developer Tools |
| Community Rating | No ratings(0 reviews) | No ratings(0 reviews) |
| Community Upvotes | 7 votes | 293 votes |
| Supported Platforms | Web | Web |
| Tags & Focus | #Artificial Intelligence#Developer Tools#GitHub#Security | #Artificial Intelligence#Developer Tools#Data |
| Maker / Company | Independent Developer | Independent Developer |
| Platform Verification | Community Listing | Community Listing |
About Custos — The bouncer for your AI agents
Custos is an open-source safety and control layer designed specifically for AI agents, acting as a reliable 'bouncer' for your applications. As AI agents increasingly interact with critical infrastructure, Custos sits directly between the agent and its tools—such as APIs, files, databases, shell commands, and MCP servers—to intercept and verify every single action before it is executed.
Built for teams deploying AI agents in real-world environments, Custos allows you to explicitly define rule sets determining what an agent is allowed to do, automatically blocking anything outside of those bounds. Furthermore, every action attempted or performed is recorded in a secure, tamper-evident audit trail. With native support for both Python and TypeScript, Custos provides developers with the robust security infrastructure needed to prevent AI agents from performing unintended or harmful actions.
Pros of Custos — The bouncer for your AI agents
- Acts as an interception layer between AI agents and critical tools like APIs, files, databases, shell commands, and MCP servers.
- Provides a tamper-evident audit trail recording every agent action.
- Open-source software built for teams running real-world AI agent environments.
- Supports both Python and TypeScript development stacks.
Cons of Custos — The bouncer for your AI agents
- Relies entirely on developer-defined rules to catch unexpected agent behaviors.
- Limited to Python and TypeScript language support based on current specifications.
- Requires integration work to sit between existing agents and their target tools.
Frequently Asked Questions
What is Custos?
Custos is an open-source safety and control layer for AI agents that sits between the agent and its tools to check every action before it runs, blocking anything outside of defined rules.
Which programming languages are supported?
Custos works with both Python and TypeScript.
How does Custos handle security and tracking?
Custos checks actions against your defined rules and records every action in a tamper-evident audit trail.
What tools can Custos monitor and control?
Custos can monitor actions directed at APIs, files, databases, shell commands, and MCP servers.
About Fluree AI
Fluree AI is an advanced tool designed to give every app and AI agent trusted context derived directly from your company data. Moving beyond traditional RAG (Retrieval-Augmented Generation) guesses and constant prompt rebuilding, Fluree AI queries structured data directly to deliver cited, verifiable answers from a single live data layer.
Built with robust security in mind, permissions are checked on every single request. The platform connects seamlessly to MCP-ready agents, apps, and dashboards in just minutes, bridging the gap between enterprise data infrastructure and modern artificial intelligence workflows.
Pros of Fluree AI
- Provides trusted, cited, and verifiable answers from a live data layer
- Performs permission checks on every request for enhanced security
- Queries structured data directly instead of relying on RAG guesses
- Connects to MCP-ready agents, apps, and dashboards in minutes
Cons of Fluree AI
- Requires integration with existing company data infrastructure
- Focused primarily on structured data and MCP-ready ecosystems
- Limited information available for non-technical users
Frequently Asked Questions
What does Fluree AI do?
Fluree AI provides apps and AI agents with trusted context from company data, allowing users to ask questions and receive cited, verifiable answers from a live data layer.
How does Fluree AI handle data security and access?
Fluree AI checks permissions on every request to ensure secure and appropriate access to company data.
What types of systems can Fluree AI connect to?
Fluree AI connects to MCP-ready agents, dashboards, and applications in a matter of minutes.