SendGuard
Check an email before your AI agent sends it: allow, review or block with reasons.
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~618Tokens (tool definitions)
~7.5 KBTypical response size
Minimal attention impact (0.48% of 128k context)
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": {
"preflight": {
"url": "https://api.sendguard.ai/mcp"
}
}
}Remote endpoints
https://api.sendguard.ai/mcpstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟡preflight_email(from_email, to_email, subject, body, recipient_company, ...)
Check an AI-written email before sending. Returns allow, delay, requires_approval or block with reason codes (recipient validity, sender authentication, content risk, sensitive industries, volume limits) and recommendations. Does not send email. Without an API key: 3 free checks per day per IP.
Input Schema
{
"type": "object",
"properties": {
"from_email": {
"type": "string",
"description": "Sender address the agent will send from"
},
"to_email": {
"type": "string",
"description": "Recipient address"
},
"subject": {
"type": "string",
"description": "Email subject"
},
"body": {
"type": "string",
"description": "Email body as plain text"
},
"recipient_company": {
"type": "string",
"description": "Recipient company name"
},
"recipient_industry": {
"type": "string",
"description": "Recipient industry, for example healthcare"
},
"recipient_country": {
"type": "string",
"description": "Recipient country as ISO 3166-1 alpha-2, for example DE"
},
"recipient_source": {
"type": "string",
"description": "Where the address came from, for example apollo, website, referral"
},
"intent": {
"type": "string",
"description": "Purpose, for example cold_outbound or follow_up"
},
"relationship": {
"type": "string",
"description": "Relationship, for example new_prospect or existing_customer"
},
"policy": {
"type": "string",
"description": "Policy: default, balanced, strict, growth, enterprise, healthcare or recruiting"
},
"agent_id": {
"type": "string",
"description": "Your agent identifier (API key callers); used for per-agent limits"
},
"workspace_id": {
"type": "string",
"description": "Your workspace identifier (API key callers)"
},
"campaign_id": {
"type": "string",
"description": "Campaign identifier (optional)"
}
},
"required": [
"from_email",
"to_email"
],
"additionalProperties": false
}Output Schema
{
"type": "object",
"properties": {
"decision": {
"type": "string",
"description": "allow, delay, requires_approval or block"
},
"risk_score": {
"type": "integer"
},
"confidence": {
"type": "number"
},
"delay_seconds": {
"type": "integer"
},
"reasons": {
"type": [
"null",
"array"
],
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"severity": {
"type": "string"
},
"message": {
"type": "string"
}
},
"required": [
"code",
"severity",
"message"
],
"additionalProperties": false
}
},
"recommendations": {
"type": [
"null",
"array"
],
"items": {
"type": "string"
}
},
"approval": {
"type": [
"null",
"object"
],
"properties": {
"queue": {
"type": "string"
},
"reason": {
"type": "string"
}
},
"required": [
"queue",
"reason"
],
"additionalProperties": false
},
"recipient_status": {
"type": "string"
},
"suggested_email": {
"type": "string"
},
"billing": {
"type": "object",
"properties": {
"mode": {
"type": "string",
"description": "api_key or anonymous_trial"
},
"charged": {
"type": "boolean"
},
"balance_remaining": {
"type": [
"null",
"integer"
]
},
"trial_remaining_today": {
"type": [
"null",
"integer"
]
}
},
"required": [
"mode",
"charged"
],
"additionalProperties": false
},
"next_step": {
"type": "string"
}
},
"required": [
"decision",
"risk_score",
"confidence",
"billing",
"next_step"
],
"additionalProperties": false
}Community
Evidence
Recent observations
verifiedversion not recorded1 tools