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mcp-hey

mcp-hey

by Sealjay
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Local

hey_list_reply_later

Read-only

List emails in the Reply Later stack to review deferred messages. Returns postingIds for removal and supports force_refresh to bypass cache.

Instructions

List emails currently in the Reply Later stack. Returns cached results (same shape as hey_list_emails) unless force_refresh=true. Use hey_remove_reply_later with the returned postingId to remove an item.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "hey_list_reply_later"
  }
}

Input Schema

NameRequiredDescriptionDefault
force_refreshNoBypass cache and fetch fresh data (default: false)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A4.2/5.0
Behavior4/5

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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds genuinely useful behavior: results are cached unless force_refresh=true, and the output shape matches hey_list_emails. This goes beyond the structured fields.

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?

Three tight sentences, zero filler, with the core purpose front-loaded and the caching caveat and removal pointer following in priority order.

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?

With no output schema, the description compensates by stating the return shape matches hey_list_emails and that items carry a postingId. That is enough for an agent to act, though it could note pagination or empty-stack behavior.

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 the single force_refresh parameter is fully documented in the schema including its default. The description's mention that force_refresh bypasses the cache largely restates the schema, so baseline 3 applies.

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?

States a specific verb and resource ('List emails currently in the Reply Later stack'), which is distinguishable from sibling list tools like hey_list_set_aside and hey_list_emails. An agent can identify the target stack without opening the schema.

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?

Names the follow-up tool hey_remove_reply_later with the exact identifier (postingId) needed, which routes the agent correctly for removal. It does not explicitly say when not to use this versus hey_list_emails, so it falls short of the 5 bar.

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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