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rehan1020

mcp-india-stack

by rehan1020

validate_mobile_number

Read-onlyIdempotent

Validate Indian mobile numbers and detect operator/circle. Use for KYC or contact verification.

Instructions

Validate Indian mobile number and detect operator/circle.

Use when validating mobile numbers for KYC or contact verification.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
mobileYes10-digit mobile number with or without +91/0

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior4/5

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

Annotations already declare readOnlyHint=true and idempotentHint=true, so the description adds value by stating 'detect operator/circle', which hints at the return content. No contradictions; the description complements annotations.

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

Conciseness5/5

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

Two short, front-loaded sentences with no extraneous information. Every sentence serves a purpose.

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

Completeness5/5

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

Given the annotations cover safety, the input schema fully describes the parameter, and an output schema exists, the description is complete enough for an AI to decide when and how to use this simple validation 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?

Schema description coverage is 100% (parameter 'mobile' described as '10-digit mobile number with or without +91/0'). The description does not add any new meaning beyond the schema, so baseline score 3 applies.

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?

Description clearly states 'Validate Indian mobile number and detect operator/circle', which is a specific verb+resource. It also provides a usage context, distinguishing it from sibling validation tools for other entities (e.g., Aadhaar, PAN, etc.).

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?

Explicitly says 'Use when validating mobile numbers for KYC or contact verification', providing clear context for when to use. However, it does not mention when not to use or list alternative tools, but given the sibling list, alternatives are implied.

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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