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x402-mcp

x402-mcp

Official
by x402node
OverviewSchemaSourceRelated ServersDiscussionsAdmin
JavaScript
Remote

x402node_dev_hash

Compute cryptographic hash of any text input using MD5, SHA-1, SHA-256, SHA-384, or SHA-512. Returns hex digest for integrity checks and content addressing.

Instructions

Cryptographic hash / MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512 / hex digest / file integrity / checksum / message digest / content fingerprint / password hashing prep / content-addressed storage. Compute hash of any text input using MD5, SHA-1, SHA-256, SHA-384, or SHA-512. Returns hex digest. For AI agents, integrity checks, deduplication, content addressing.

Price: unknown on Base (auto-paid in USDC).

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": {
      "text": "<text>"
    },
    "name": "x402node_dev_hash"
  }
}

Input Schema

NameRequiredDescriptionDefault
algoNoHash algorithm: md5 | sha1 | sha256 | sha384 | sha512. Default: sha256
textYesInput text to hash (required)

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

B3.3/5.0
Behavior2/5

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

No annotations are provided, so the description must fully disclose behavior. It states the algorithm selection and hex digest output but omits details like behavior on empty input, performance characteristics, or whether the function is deterministic and side-effect free. The odd pricing note adds no behavioral insight.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively short but starts with a keyword soup that is hard to parse. The functional sentence is clear, but the inclusion of 'Price: unknown on Base (auto-paid in USDC)' is irrelevant and distracts from the tool's purpose. It could be more streamlined.

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?

The description covers the core functionality (hash computation) and mentions the return format (hex digest). However, it lacks details on edge cases (e.g., handling non-string input) and does not specify the output schema given none is provided. It is minimally adequate for a simple tool.

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?

Both parameters are fully described in the input schema (100% coverage). The description mentions 'hex digest' (explaining output format) and 'Default: sha256' but these are largely redundant with the schema. The description adds minimal value beyond what the schema already provides.

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 tool computes a cryptographic hash using multiple algorithms (MD5, SHA-1, SHA-256, SHA-384, SHA-512) and returns a hex digest. It lists specific use cases like integrity checks and deduplication, making the purpose unambiguous and distinct from sibling tools.

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 implies usage scenarios (integrity checks, deduplication, content addressing) but does not explicitly differentiate from alternatives like other crypto tools (e.g., HMAC, PBKDF2). It mentions 'password hashing prep' but lacks guidance on when not to use it (e.g., for secure password storage).

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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