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Problee MCP

Problee MCP

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by pprotocol-us
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

Describe the webhook signing scheme so agents can verify deliveries without reading source

problee_discover_webhooks
Read-onlyIdempotent

Describe Standard Webhooks signing and url_verification handshakes so receivers can verify delivery authenticity without reading source code.

Instructions

Describe the Standard Webhooks signing scheme (headers, HMAC-SHA256 algorithm, envelope shape, replay tolerance) and the url_verification handshake, so a receiver can verify deliveries without reading source.

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": "problee_discover_webhooks"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.5

TDQS

A3.9/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds content-level transparency (it tells you the doc's depth: algorithm, envelope shape, replay tolerance). It does not disclose anything further behavioral — versioning, whether it reflects live server config, or freshness — so a 3 is appropriate.

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?

A single front-loaded sentence with a tight parenthetical enumeration; every clause earns its place and nothing is redundant or buried.

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?

For a zero-parameter discovery/doc tool with an output schema present, the description need not explain return values, and it adequately conveys what the call yields. Minor gap: it doesn't note whether the returned scheme description is versioned or static.

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

Parameters4/5

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

The tool takes zero parameters (empty object schema, 100% coverage), so per the rubric the baseline is 4. There are simply no parameters for the description to explain.

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

Purpose4/5

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

Specific verb ("Describe") plus a precisely named resource ("the Standard Webhooks signing scheme") and an enumeration of exactly what the doc covers: headers, HMAC-SHA256, envelope shape, replay tolerance, and the url_verification handshake. An agent knows this returns webhook-signature documentation, not event listings. It does not explicitly distinguish itself from the sibling problee_list_webhook_event_types, so it falls short of a 5.

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?

"So a receiver can verify deliveries without reading source" clearly states the intended context: use this when implementing or validating a webhook receiver. That is a concrete usage cue. However, no when-not condition or explicit alternative (e.g., list_webhook_event_types for event payloads) is given.

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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