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Fivebar Trading

by io.github.fivebar-xyz
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Get your own wallet (to trade and pay)

wallet_setup
Read-only

No wallet yet, or not sure how to sign? How an agent gets its own wallet on its own computer, backs it up with its human, and trades through Fivebar: install the Fivebar Wallet (a small local MCP, npx -y fivebar) that creates the key on your computer, makes your human confirm a backup before any money moves, then signs swap_build's transactions and x402 payments there. Or bring a wallet you already have. Fivebar never sees or holds your key.

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": "wallet_setup"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Added

TDQS

A4.3/5.0
Behavior4/5

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

Annotations only declare readOnlyHint and openWorldHint; the description adds real value beyond them by disclosing the security model: the key is generated on the caller's machine, a human must confirm a backup before any funds move, and Fivebar never sees or holds the key. The one gap is that it never clarifies whether calling this tool actually performs the install or merely returns setup instructions, which matters for a readOnlyHint tool.

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?

It front-loads the reader's problem before the mechanism, which is good structure. However, the middle sentence is a long run-on stacking install, backup, signing, and x402 payments, which slightly hurts scannability.

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?

There is no output schema, and the description compensates by walking through the setup flow end-to-end, including the backup gate and the trusted-party model. It would be stronger if it said what a call actually returns (instructions versus a completed setup) and what happens on failure.

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 input schema is empty, so there is nothing to disambiguate and the baseline is 4. The description correctly implies a parameterless invocation via `npx -y fivebar` rather than requiring configuration arguments.

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 outcome (get your own wallet), names the mechanism (a local MCP installed via `npx -y fivebar`), and explicitly ties it to its sibling `swap_build` for transaction signing plus x402 payments. It also covers the alternative path (bring an existing wallet), so an agent can distinguish this from wallet_* siblings without inspecting schemas.

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?

The opening question 'No wallet yet, or not sure how to sign?' gives a clear triggering condition, and 'Or bring a wallet you already have' scopes the alternate case. It stops short of an explicit when-not (e.g., don't call if a wallet is already configured and working), leaving some inference.

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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