CalibratedDecisions.

Repo · Safety & guardrails

Prompt Rejector

MCP server and local HTTPS API that screen prompts, skill files, and MCP tool descriptions before an agent acts: deterministic checks plus TypeSafe…

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From the repository

Open-source MCP and HTTPS screening for prompts, skills, and tool descriptions using TypeSafe AI Jev, deterministic checks, and configurable reasoning.

ai-securityclaudeclaude-codecodexcybersecuritygeminijevllm-safetymcpmcp-securityprompt-injectionprompt-injection-defenseprompt-injection-detectortool-poisoningtypesafe-ai

How builders describe it

MCP server and local HTTPS API that screen prompts, skill files, and MCP tool descriptions before an agent acts: deterministic checks plus TypeSafe Jev judgments (configurable reasoning adapters). Your app must call the scanner; install alone does not intercept traffic.
Prompt-injection scanner that combines deterministic checks with focused Jev judgments and a configurable reasoning model, exposed over CLI, SDK, HTTPS, MCP, and editor plugins.

The decision Jev makes

Allow, flag or escalate a message, tool call or action.

Where it fits

Screening messages, tool calls and outputs before they cause trouble. Jev gives a fast, calibrated verdict that can sit in front of every request or agent action. All 229 safety & guardrails projects →

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