Agen Shield vs Repello MCP Gateway: Side-by-Side Comparison (2026)

Agen Shield: Endpoint & browser enforcement layer blocking dangerous AI agent actions pre-execution. built by Agen.co. Core capabilities include On-device pre-execution blocking of out-of-policy AI agent actions, Browser paste detection and blocking of sensitive data into AI tools, Unified policy plane shared across device, browser, and gateway enforcement..

Repello MCP Gateway: Security gateway for monitoring and protecting MCP-based AI agent tool calls. built by Repello AI. Core capabilities include Prompt injection detection and blocking, Tool poisoning attack detection, MCP traffic inspection and filtering..

Both serve the Agentic AI Security market but differ in approach, feature depth, and target audience.

Agen Shield differentiates with On-device pre-execution blocking of out-of-policy AI agent actions, Browser paste detection and blocking of sensitive data into AI tools, Unified policy plane shared across device, browser, and gateway enforcement. Repello MCP Gateway differentiates with Prompt injection detection and blocking, Tool poisoning attack detection, MCP traffic inspection and filtering.

Agen Shield is developed by Agen.co. Repello MCP Gateway is developed by Repello AI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Agen Shield and Repello MCP Gateway serve similar Agentic AI Security use cases: both are Agentic AI Security tools, both cover Policy, MCP Security. Review the feature comparison above to determine which fits your requirements.