SpamTitan MCP Tools & API Patterns

Overview

The SpamTitan MCP server provides AI tool integration with the SpamTitan email security platform by TitanHQ. It exposes tools covering quarantine queue management, email flow statistics, and sender allowlist/blocklist management. The API uses an API key passed as an HTTP header.

Connection & Authentication

API Key Header Auth

SpamTitan authenticates using an API key passed via HTTP header:

Generate credentials at: SpamTitan Admin Interface > Settings > API

Environment Variables:

export SPAMTITAN_API_KEY="your-api-key"

IMPORTANT: Never hardcode credentials. Always use environment variables.

Available MCP Tools

The server registers nine tools. There is no separate list tool for either sender list and no separate per-domain statistics tool — both capabilities are arguments on the tools below.

Quarantine Management

On a multi-tenant appliance the listing therefore spans every tenant, and per-customer filtering has to be done client-side on recipient after the fetch. This is easy to miss because the sibling spamtitan_get_stats does take domain. See the quarantine skill and GOVERNANCE.md.

Email Statistics

Per-domain statistics are real — they are the domain argument on this tool, not a separate tool.

List Management

Listing is action: "list" on the same tool — there is no separate list tool. action is the only required parameter; sender is required by the handler for add and remove. Omitting action makes the server elicit it from the caller, which an unattended agent cannot answer.

Discovery

Pagination

The quarantine queue uses page/per-page pagination:

• Pass page (1-based) and per_page (default 50, max 200)
• Continue fetching pages until the result count is less than per_page

Example workflow:

1. Call spamtitan_get_queue with page=1, per_page=100
2. If 100 results returned, call again with page=2
3. Repeat until fewer than per_page results are returned

Rate Limiting

SpamTitan enforces API rate limits per API key:

• HTTP 429 responses indicate rate limit exceeded
• Wait before retrying — use exponential backoff
• Use date range filters to reduce result set sizes
• Avoid polling at high frequency; fetch on demand

Error Handling

Common Error Codes

Error Response Format

{
  "error": {
    "code": 401,
    "message": "Invalid or missing API key"
  }
}

Best Practices

• Narrow the quarantine queue with the filters that exist — sender,

recipient, subject, reason — rather than paging the whole appliance. There is no date filter and no domain filter on spamtitan_get_queue.

• To approximate per-customer scope on the queue, pass recipient (a full

address) or filter the results client-side on the recipient's domain. Do not tell an operator the listing is scoped to their customer when it is not.

• spamtitan_get_stats does accept domain, so per-customer statistics are

genuinely scoped server-side. The asymmetry with the queue is the trap.

• There is no bulk release or bulk delete tool — both act on one message_id

per call. Iterate deliberately and confirm each destructive call.

• Always confirm before deleting quarantined messages — deletion is irreversible
• Log all list management changes (allowlist/blocklist) for audit trail purposes,

using the note parameter on spamtitan_manage_allowlist / spamtitan_manage_blocklist

Related Skills

• quarantine - Quarantine queue management
• lists - Sender allowlist and blocklist management