UnCorreoTemporal

complete_signup_flow

Automate the complete signup process: create a temporary email inbox, wait for the verification message, and extract the OTP code and confirmation link for any online service.

Instructions

End-to-end signup helper: create inbox, wait for email, extract link and OTP.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "service_name": "<service_name>"
    },
    "name": "complete_signup_flow"
  }
}

Input Schema

Name	Required	Description	Default
`service_name`	Yes
`timeout_seconds`	No
`poll_interval_seconds`	No
`subject_contains`	No
`from_contains`	No
`preferred_domains`	No
`ttl_minutes`	No

Output Schema

Name	Required	Description	Default
No arguments

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Apr 2, 2026

TDQS

B3/5.0

Behavior2/5

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

With no annotations provided, the description must disclose behavioral traits. It only outlines the process without mentioning side effects, timeouts, security, or error handling. Information about what happens to the created inbox after extraction or behavior on failure is missing.

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

Conciseness4/5

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

The description is a single concise sentence that efficiently conveys the tool's composite nature. However, it lacks structure such as bullet points or sections that could improve readability, but it's not verbose and gets the point across.

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

Completeness2/5

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

Given the tool has 7 parameters and an output schema, the description is incomplete. It does not mention return values (though output schema exists), nor does it explain how parameters influence behavior. The composite nature is stated, but many contextual details are omitted.

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

Parameters1/5

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

The schema has 0% parameter description coverage, and the tool description does not explain any parameter meaning or usage. Parameters like 'service_name', 'timeout_seconds', and 'subject_contains' are left entirely undocumented, failing to add value beyond the schema structure.

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's purpose as an 'End-to-end signup helper' and lists the specific steps it performs: create inbox, wait for email, extract link and OTP. This distinguishes it from sibling tools which are individual steps, making the composite nature explicit.

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

Usage Guidelines3/5

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

The description implies the tool is for completing the signup flow in one call, but it does not explicitly state when to use this composite tool versus using the individual sibling tools separately. No guidance on when not to use or alternatives is provided.

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

Deploy Server