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Blockchain MCP Server

Blockchain MCP Server

by lienhage
OverviewSchemaSourceRelated ServersDiscussionsAdmin
TypeScript
Remote

abi encode with signature

abi-encode-with-signature

Encode Ethereum function calls with ABI using a function signature and parameter values array. Simplify smart contract interactions on the Blockchain MCP Server.

Instructions

encode function call with abi

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": {
      "functionSignature": "<functionSignature>",
      "values": "<values>"
    },
    "name": "abi-encode-with-signature"
  }
}

Input Schema

NameRequiredDescriptionDefault
functionSignatureYesfunction signature, e.g. 'transfer(address,uint256)'
valuesYesparameter values array, corresponding to the types array

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.6/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description only states the action ('encode') without detailing any behavioral traits such as error handling, performance characteristics, or side effects. It lacks information on what the encoding produces (e.g., a hex string) or any constraints, making it insufficient for a tool with no annotation coverage.

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 very concise with a single phrase, 'encode function call with abi', which is front-loaded and wastes no words. However, it is arguably too brief, bordering on under-specified, but it efficiently conveys the core idea without redundancy.

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

Completeness2/5

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

Given the tool's complexity (encoding with ABI, which can be nuanced), lack of annotations, and no output schema, the description is incomplete. It fails to explain what the output is (e.g., encoded data format), any dependencies, or error conditions. This leaves significant gaps for an agent to understand and use the tool effectively.

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%, so the schema already documents both parameters ('functionSignature' and 'values') with clear descriptions. The description adds no additional meaning beyond what the schema provides, such as examples of usage or relationships between parameters. Baseline 3 is appropriate as the schema handles parameter documentation adequately.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'encode function call with abi' states the general purpose (encoding) but is vague about what specifically is being encoded and how it differs from siblings. It mentions 'function call' and 'abi' but doesn't specify that this tool encodes with a signature, unlike the sibling 'abi-encode' which might encode differently. The description is functional but lacks specificity and sibling differentiation.

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?

No guidance is provided on when to use this tool versus alternatives. The description does not mention any context, prerequisites, or exclusions, nor does it reference sibling tools like 'abi-encode' or 'abi-decode' for comparison. This leaves the agent without clear usage instructions.

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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