Quartermaster

Official38 toolsLive

by quartermaster

x402 toolkit for AI agents: paid web, AI, and Base chain tools per call in USDC. Free tools too.

Captured live from the server via tools/list.

web_extract

Extract clean readable text and metadata from a public webpage as structured JSON. Costs $0.005 (USDC via x402).

Parameters

url

string

required

Public webpage URL

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Public webpage URL"
    }
  },
  "required": [
    "url"
  ]
}

page_meta

Get page metadata: title, description, Open Graph, canonical URL, favicon, language. Costs $0.002.

Parameters

url

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    }
  },
  "required": [
    "url"
  ]
}

qr_generate

Generate a QR code as SVG (or terminal text with format=text). Costs $0.002.

Parameters

data	string	required
format	string	optional
ecc	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string",
      "maxLength": 2048
    },
    "format": {
      "type": "string",
      "enum": [
        "svg",
        "text"
      ]
    },
    "ecc": {
      "type": "string",
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ]
    }
  },
  "required": [
    "data"
  ]
}

dns_lookup

Resolve DNS records over DNS-over-HTTPS (A, AAAA, CNAME, MX, NS, TXT, and more). Costs $0.001.

Parameters

name	string	required
type	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "name"
  ]
}

http_error_explain

Explain an HTTP status code: meaning, common causes, fixes, retry guidance. Costs $0.001.

Parameters

code

integer

required

Raw schema

{
  "type": "object",
  "properties": {
    "code": {
      "type": "integer"
    }
  },
  "required": [
    "code"
  ]
}

tx_status

Check a Base transaction: success/reverted/pending, confirmations, gas, explorer link. Costs $0.002. Choose this for a quick raw status; use payment_receipt for decoded transfers, or settlement_assurance to PROVE an x402 payment settled to the right wallet/amount.

Parameters

hash

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "hash": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{64}$"
    }
  },
  "required": [
    "hash"
  ]
}

wallet_balance

ETH and USDC (or any ERC-20) balance for an address on Base. Costs $0.001.

Parameters

address	string	required
token	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string"
    },
    "token": {
      "type": "string"
    }
  },
  "required": [
    "address"
  ]
}

gas_prices

Current Base gas prices with a simple-transfer cost estimate. Costs $0.001.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

summarize_url

AI summary of a public webpage (fetch + extract + summarize). length: short|medium|long. Costs $0.01.

Parameters

url	string	required
length	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    },
    "length": {
      "type": "string",
      "enum": [
        "short",
        "medium",
        "long"
      ]
    }
  },
  "required": [
    "url"
  ]
}

translate_text

AI translation into any target language; source auto-detected. Costs $0.005.

Parameters

text	string	required
to	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "maxLength": 8000
    },
    "to": {
      "type": "string"
    }
  },
  "required": [
    "text",
    "to"
  ]
}

x402_inspect

Inspect and lint any x402 paid endpoint: decode the 402 challenge, identify network/asset, flag misconfigurations and Bazaar-readiness. Costs $0.002. Choose this for a quick one-shot decode+lint; use x402_audit for a full 0-100 scored report with origin discovery probes and recommended fixes.

Parameters

url

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    }
  },
  "required": [
    "url"
  ]
}

embed_text

Text embeddings (1024-dim vector) for semantic search and RAG. Costs $0.002.

Parameters

text

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "maxLength": 8000
    }
  },
  "required": [
    "text"
  ]
}

extract_structured

Structured extraction: JSON Schema plus a URL or raw text in, matching JSON out. Costs $0.005.

Parameters

schema	string	required	JSON Schema as a JSON string
url	string	optional
text	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "schema": {
      "type": "string",
      "description": "JSON Schema as a JSON string"
    },
    "url": {
      "type": "string"
    },
    "text": {
      "type": "string"
    }
  },
  "required": [
    "schema"
  ]
}

moderate_text

Content-safety classification (Llama Guard): safe flag plus category codes. Costs $0.002.

Parameters

text

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "maxLength": 12000
    }
  },
  "required": [
    "text"
  ]
}

describe_image

AI vision: describe a public image URL, including visible text. Costs $0.005.

Parameters

url	string	required
prompt	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    }
  },
  "required": [
    "url"
  ]
}

token_price

USD price for major tokens by symbol or any Base ERC-20 by address. Costs $0.001.

Parameters

token

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "token": {
      "type": "string"
    }
  },
  "required": [
    "token"
  ]
}

payment_receipt

Formatted settlement receipt for a Base transaction: timestamp, decoded transfers, explorer link. Costs $0.002. Choose this for a human-readable record; use payment_proof to ASSERT a specific payTo/amount, or settlement_assurance for a full scored verdict.

Parameters

hash

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "hash": {
      "type": "string",
      "pattern": "^0x[0-9a-fA-F]{64}$"
    }
  },
  "required": [
    "hash"
  ]
}

resolve_basename

Resolve a Basename (.base.eth) to a wallet address on Base. Costs $0.001.

Parameters

name

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    }
  },
  "required": [
    "name"
  ]
}

x402_audit

WORKFLOW: full scored audit of an x402 SELLER endpoint (a URL) in one call - verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces; returns a 0-100 score, checks with evidence, and recommended fixes. Costs $0.01. Use this to grade an endpoint before trusting/publishing it; use settlement_assurance instead when you already have a transaction hash and want to prove a completed PAYMENT settled correctly.

Parameters

url

string

required

x402 paid endpoint to audit

Raw schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "x402 paid endpoint to audit"
    }
  },
  "required": [
    "url"
  ]
}

payment_proof

Verify an x402 settlement from a tx hash: confirm the Base tx succeeded, decode its USDC transfers, optionally assert payTo/amount - returns a single verdict. Costs $0.003. Choose this when you only need the yes/no did-it-land answer; use settlement_assurance for the full scored report (proof + receipt + optional endpoint audit).

Parameters

hash	string	required
payTo	string	optional
amount	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "hash": {
      "type": "string"
    },
    "payTo": {
      "type": "string"
    },
    "amount": {
      "type": "string"
    }
  },
  "required": [
    "hash"
  ]
}

settlement_assurance

FLAGSHIP: from a tx hash, prove a completed x402 payment is real and sound - onchain success, USDC transfer match to an expected wallet/amount, a receipt, and an optional audit of the issuing endpoint - as one 0-100 scored report with a verdict. Costs $0.03. This is the most complete post-payment check; use payment_proof if you only need a plain pass/fail, tx_status for raw status, or x402_audit to grade a seller endpoint by URL (no payment yet).

Parameters

hash	string	required
payTo	string	optional
amount	string	optional
resource	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "hash": {
      "type": "string"
    },
    "payTo": {
      "type": "string"
    },
    "amount": {
      "type": "string"
    },
    "resource": {
      "type": "string"
    }
  },
  "required": [
    "hash"
  ]
}

x402_discover

Search the Coinbase x402 Bazaar for paid resources by natural-language query. Costs $0.001.

Parameters

query	string	required
limit	integer	optional

Raw schema

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string"
    },
    "limit": {
      "type": "integer"
    }
  },
  "required": [
    "query"
  ]
}

x402_merchant

List all x402 Bazaar resources under a merchant payTo wallet. Costs $0.001.

Parameters

payTo	string	required
limit	integer	optional

Raw schema

{
  "type": "object",
  "properties": {
    "payTo": {
      "type": "string"
    },
    "limit": {
      "type": "integer"
    }
  },
  "required": [
    "payTo"
  ]
}

usdc_normalize

Convert USDC amounts between atomic units and human decimals. Costs $0.001.

Parameters

amount	string	required
decimals	integer	optional
direction	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "amount": {
      "type": "string"
    },
    "decimals": {
      "type": "integer"
    },
    "direction": {
      "type": "string",
      "enum": [
        "to-human",
        "to-atomic"
      ]
    }
  },
  "required": [
    "amount"
  ]
}

base_token_info

ERC-20 name, symbol, decimals, total supply for a token on Base. Costs $0.001.

Parameters

address

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string"
    }
  },
  "required": [
    "address"
  ]
}

base_allowance

Check an ERC-20 spending allowance on Base; flags unlimited approvals. Costs $0.001.

Parameters

owner	string	required
spender	string	required
token	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "owner": {
      "type": "string"
    },
    "spender": {
      "type": "string"
    },
    "token": {
      "type": "string"
    }
  },
  "required": [
    "owner",
    "spender"
  ]
}

base_contract

Determine whether a Base address is a contract or an EOA. Costs $0.001.

Parameters

address

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string"
    }
  },
  "required": [
    "address"
  ]
}

base_usdc_transfers

Recent USDC transfers (in and out) for an address on Base. Costs $0.002.

Parameters

address	string	required
limit	integer	optional

Raw schema

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string"
    },
    "limit": {
      "type": "integer"
    }
  },
  "required": [
    "address"
  ]
}

jwt_decode

Decode a JWT header and payload (signature NOT verified). Costs $0.001.

Parameters

token

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "token": {
      "type": "string"
    }
  },
  "required": [
    "token"
  ]
}

base64

Base64 encode or decode a string. Costs $0.001.

Parameters

op	string	optional
data	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "op": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ]
    },
    "data": {
      "type": "string"
    }
  },
  "required": [
    "data"
  ]
}

text_stats

Word/sentence counts, reading time, and readability score for text. Costs $0.001.

Parameters

text

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string"
    }
  },
  "required": [
    "text"
  ]
}

text_diff

Compact line-level diff between two texts. Costs $0.001.

Parameters

before	string	required
after	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "before": {
      "type": "string"
    },
    "after": {
      "type": "string"
    }
  },
  "required": [
    "before",
    "after"
  ]
}

x402_test_vector

Free: example x402 payment-requirement objects with field explanations.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

current_time

FREE (no wallet needed): current time as ISO, unix, UTC, and optional local time for an IANA timezone.

Parameters

string

optional

Optional IANA timezone, e.g. America/Chicago

Raw schema

{
  "type": "object",
  "properties": {
    "tz": {
      "type": "string",
      "description": "Optional IANA timezone, e.g. America/Chicago"
    }
  }
}

generate_uuid

FREE (no wallet needed): generate UUID v4 values, up to 100 at once.

Parameters

count

integer

optional

How many, 1-100

Raw schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "description": "How many, 1-100"
    }
  }
}

hash_string

FREE (no wallet needed): SHA-1/256/384/512 hex digest of a string.

Parameters

data	string	required
algo	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "string"
    },
    "algo": {
      "type": "string",
      "enum": [
        "sha1",
        "sha256",
        "sha384",
        "sha512"
      ]
    }
  },
  "required": [
    "data"
  ]
}

http_errors_list

FREE (no wallet needed): index of documented HTTP status codes (use http_error_explain for a paid detailed explanation).

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

quartermaster_info

Free: catalog, prices, and payment instructions for this server.

Parameters

No parameters.

Raw schema

{
  "type": "object",
  "properties": {}
}

Install

Tools (38)

web_extractpage_metaqr_generatedns_lookuphttp_error_explaintx_statuswallet_balancegas_prices

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

https://quartermaster.surewhynot.app/mcp

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "quartermaster": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://quartermaster.surewhynot.app/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.