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handshake-mcp

handshake-mcp

by zeroai-tech
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
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handshake_list

List the names of credentials in the encrypted vault using an open session token. Returns only credential names, never their values, during the active human-unlocked session.

Instructions

List the NAMES of stored credentials (never values). Requires an open session token.

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": {
      "session": "<session>"
    },
    "name": "handshake_list"
  }
}

Input Schema

NameRequiredDescriptionDefault
sessionYestoken from `handshake unlock`

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

A3.8/5.0
Behavior3/5

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

With no annotations provided, the description carries the behavioral disclosure burden. It does disclose that values are never returned and that an open session is required, which is useful. It does not address side effects, failure behavior, or whether the operation is strictly read-only, though 'List' strongly implies a read operation.

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 sentence that front-loads the core purpose ('List the NAMES of stored credentials') and immediately warns about the critical limitation ('never values'), followed by the required precondition. No wasted words.

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 simple one-parameter list operation, the description conveys the return content (names only), the security boundary (no values), and the invocation precondition (open session token). It could be improved by describing the error case for an invalid or expired session, but the tool is otherwise adequately specified.

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 description coverage is 100% and the only parameter, session, is already documented as 'token from `handshake unlock`'. The description adds the nuance that the session must be open, but otherwise does not meaningfully extend the schema's parameter documentation.

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 states a specific verb ('List') and resource ('stored credentials'), and clarifies the scope to names only, explicitly excluding values. This distinguishes it from sibling tools like handshake_get, which likely retrieves credential values.

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 gives a clear precondition ('Requires an open session token') and the 'never values' caveat implies that value retrieval belongs to another tool. However, it does not explicitly name alternatives such as handshake_get or state when this tool is preferred over handshake_status or handshake_log.

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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