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Lightning Wallet MCP

Lightning Wallet MCP

by lightningfaucet
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

lnurl_auth

Authenticate to any LNURL-auth enabled service by providing the LNURL string. Requires an agent key for secure authorization.

Instructions

Authenticate to a service using LNURL-auth protocol. REQUIRES AGENT KEY.

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": {
      "lnurl": "<lnurl>"
    },
    "name": "lnurl_auth"
  }
}

Input Schema

NameRequiredDescriptionDefault
lnurlYesLNURL-auth string to authenticate with

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.2.9

TDQS

B3.2/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the need for an agent key, but does not describe side effects, success/failure conditions, or return behavior. Significant gaps remain.

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 only two sentences with no wasted words. However, it could include more useful information in the same space without becoming verbose.

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

Completeness3/5

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

For a simple 1-parameter tool with no output schema and no annotations, the description is minimally adequate to convey basic purpose and a requirement. However, it lacks crucial behavioral context like success/failure signals or next steps.

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% as the only parameter 'lnurl' has a description. The description adds 'LNURL-auth string' which is redundant with the schema, and 'REQUIRES AGENT KEY' is a precondition not parameter detail. Minimal added value beyond schema.

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 verb 'authenticate' and the resource 'using LNURL-auth protocol'. It is specific and distinct from sibling tools, with no ambiguity about its function.

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

Usage Guidelines2/5

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

The description mentions 'REQUIRES AGENT KEY' as a prerequisite but provides no explicit guidance on when to use this tool versus alternatives, nor any exclusion criteria. It lacks context for decision-making.

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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