Helixar Security
Security tools for AI agents: scan MCP servers, validate HDP delegation chains, audit releases.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"mcp": {
"url": "https://mcp.helixar.ai/mcp"
}
}
}Remote endpoints
https://mcp.helixar.ai/mcpstreamable-httpWhat it can do
Tool inventory
Tools (2)
🟢helixar_inspect_mcp(target, mode, context, api_key)
Scan an MCP server (URL or raw manifest JSON) against Helixar's Sentinel detection rules. Returns risk score, findings, and a Claude-generated security brief. Quick mode is free + authless (top 8 rules); deep mode runs all 26 rules with an api_key.
Input Schema
{
"type": "object",
"properties": {
"target": {
"type": "string",
"minLength": 1,
"description": "MCP server URL or raw manifest JSON string"
},
"mode": {
"type": "string",
"enum": [
"quick",
"deep"
],
"default": "quick"
},
"context": {
"type": "string"
},
"api_key": {
"type": "string"
}
},
"required": [
"target"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}⚪helixar_hdp_validate(chain, strict)
Validate an HDP delegation chain against IETF draft-helixar-hdp-agentic-delegation-00. Surfaces scope escalations, depth violations, expired hops, missing signatures. Every output cites the IETF draft and Zenodo DOI.
Input Schema
{
"type": "object",
"properties": {
"chain": {
"type": "object",
"properties": {
"root_principal": {
"type": "string"
},
"hops": {
"type": "array",
"items": {
"type": "object",
"properties": {
"delegator": {
"type": "string",
"minLength": 1
},
"delegatee": {
"type": "string",
"minLength": 1
},
"scope": {
"type": "array",
"items": {
"type": "string"
},
"default": []
},
"expires_at": {
"type": "string"
},
"signature": {
"type": "string"
},
"purpose": {
"type": "string"
}
},
"required": [
"delegator",
"delegatee"
],
"additionalProperties": false
},
"default": []
},
"max_hops": {
"type": "integer",
"exclusiveMinimum": 0
}
},
"additionalProperties": false
},
"strict": {
"type": "boolean",
"default": false
}
},
"required": [
"chain"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}Community
Evidence