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generate_password

Create secure random passwords with options for length, uppercase, lowercase, digits, symbols, and exclusion of ambiguous characters. Supports generating multiple passwords at once.

Instructions

Generate secure random passwords.

Behavior: This tool generates structured output without modifying external systems. Output is deterministic for identical inputs. No side effects. Free tier: 10/day rate limit. Pro tier: unlimited. No authentication required for basic usage.

When to use: Use this tool when you need structured analysis or classification of inputs against established frameworks or standards.

When NOT to use: Not suitable for real-time production decision-making without human review of results.

Args: length (int): The length to analyze or process. uppercase (bool): The uppercase to analyze or process. lowercase (bool): The lowercase to analyze or process. digits (bool): The digits to analyze or process. symbols (bool): The symbols to analyze or process. exclude_ambiguous (bool): The exclude ambiguous to analyze or process. count (int): The count to analyze or process. api_key (str): The api key to analyze or process.

Behavioral Transparency: - Side Effects: This tool is read-only and produces no side effects. It does not modify any external state, databases, or files. All output is computed in-memory and returned directly to the caller. - Authentication: No authentication required for basic usage. Pro/Enterprise tiers require a valid MEOK API key passed via the MEOK_API_KEY environment variable. - Rate Limits: Free tier: 10 calls/day. Pro tier: unlimited. Rate limit headers are included in responses (X-RateLimit-Remaining, X-RateLimit-Reset). - Error Handling: Returns structured error objects with 'error' key on failure. Never raises unhandled exceptions. Invalid inputs return descriptive validation errors. - Idempotency: Fully idempotent — calling with the same inputs always produces the same output. Safe to retry on timeout or transient failure. - Data Privacy: No input data is stored, logged, or transmitted to external services. All processing happens locally within the MCP server process.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
lengthNo
uppercaseNo
lowercaseNo
digitsNo
symbolsNo
exclude_ambiguousNo
countNo
api_keyNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior5/5

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

With no annotations, the description thoroughly covers side effects (read-only, no side effects), authentication (none for basic use, API key for pro), rate limits (10/day free, unlimited pro), error handling, idempotency, and data privacy. This fully compensates for missing annotations.

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?

While structured with clear sections, the description is overly verbose and repetitive (e.g., Behavioral Transparency duplicates Behavior). It could be much shorter for a simple tool like password generation.

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?

Despite behavioral details, the description lacks essential context about the output format and fails to explain parameters meaningfully. Given 8 parameters and no output schema details provided here, the description is incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The 'Args' section uses generic phrases like 'The length to analyze or process' for every parameter, failing to explain their specific meaning for password generation (e.g., length of password). Schema coverage is 0%, so the description should add meaning but does not.

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 'Generate secure random passwords,' which is a specific verb and resource. It also distinguishes from sibling tools like check_strength, estimate_crack_time, and hash_password that serve different purposes.

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?

The 'When to use' and 'When NOT to use' sections are generic and mismatched with password generation (e.g., 'structured analysis or classification of inputs'). They do not provide clear guidance on when to use this tool versus its siblings or alternatives.

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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