Retrieve the latest meter reading for each meter on an Israel Electric contract to check current consumption without manual lookup.
The last reading of each meter on a contract.
| Name | Required | Description | Default |
|---|---|---|---|
| bpNumber | No | Business partner number; defaults to the signed-in customer's. | |
| contractId | No | Contract number; defaults to the first contract. |
Changes observed during successful MCP inspections.
v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It only describes the returned data and omits read-only nature, authentication needs, error behavior, and rate limits, leaving the agent to infer safety from the tool name.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
A single front-loaded sentence with no wasted words. Appropriately terse for a simple read tool.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
The tool is simple and the schema documents its parameters well, but with no annotations and no output schema the description should at least state read-only behavior or usage context. It leaves the agent to infer when to call it versus siblings.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% and both optional parameters are documented with defaults. The description adds no parameter details, so the baseline of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states the resource and scope ('last reading of each meter on a contract') clearly, but uses a noun phrase with no verb and does not differentiate from siblings like list_meters or get_consumption.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No when-to-use guidance, alternatives, or prerequisites are given. Nothing tells the agent when to choose this tool over list_meters or get_consumption.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.