by StackOneHQ · MCP Server · ★ 94
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
Open source prompt injection protection for Agents calling tools (via MCP, CLI or direct function calling). Detect and defend against prompt injection attacks. 22MB, CPU-only, < 10ms latency.
| Stars | 94 |
| Forks | 9 |
| Language | TypeScript |
| Category | MCP Server |
| License | Apache-2.0 |
| Quality Score | 37.9/100 |
| Open Issues | 2 |
| Last Updated | 2026-04-23 |
| Created | 2026-02-13 |
| Platforms | cli, mcp, node |
| Est. Tokens | ~4498k |
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defender is Open source prompt injection protection for Agents calling tools (via MCP, CLI or direct function calling). Detect and defend against prompt injection attacks. 22MB, CPU-only, < 10ms latency.. It is categorized as a MCP Server with 94 GitHub stars.
defender is primarily written in TypeScript. It covers topics such as ai-security, indirect-prompt-injection, llm-security.
You can find installation instructions and usage details in the defender GitHub repository at github.com/StackOneHQ/defender. The project has 94 stars and 9 forks, indicating an active community.
defender is released under the Apache-2.0 license, making it free to use and modify according to the license terms.
The top alternatives to defender on Agent Skills Hub include agentseal, agentseal, agent-threat-rules. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.