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wyre-technology

spamtitan-mcp

spamtitan_manage_blocklist

DestructiveIdempotent

Add or remove sender blocklist entries to control email deliverability. Blocklisted senders are rejected or quarantined; entries are reversible.

Instructions

⚠ HIGH-IMPACT. Add or remove sender blocklist entries in SpamTitan. Modifies email delivery policy and affects deliverability for users. Blocklisted senders are always rejected or quarantined. Reversible by removing entries. Confirm with the user before invoking.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
actionYesAction to perform: 'add' to blocklist a sender, 'remove' to remove one, 'list' to view all entries
senderNoSender email address or domain to add/remove (e.g. spammer@evil.com or @evil.com). Required for add/remove actions.
noteNoOptional note explaining why this entry was added (for add action)
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Description adds behavioral context beyond annotations, such as 'modifies email delivery policy', 'affects deliverability', and 'reversible by removing entries'. Consistent with destructiveHint=true and idempotentHint=true.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Very concise: three sentences with front-loaded warning symbol. Every sentence adds essential context without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers impact, reversibility, and confirmation need. However, lacks description of output for 'list' action, which could be inferred but not explicit.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, and main description adds no new parameter-specific details beyond what the schema provides. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool modifies SpamTitan blocklist entries, distinguishing it from the sibling 'manage_allowlist'. The verb 'manage' with 'blocklist' is specific.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit warning about high impact and necessity for user confirmation. Describes consequences (rejection/quarantine) and reversibility. Lacks explicit 'when not to use' or direct alternative mention, but context is sufficient.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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