string_distance

Calculate Levenshtein edit distance and similarity between two strings.

SERVERUnClick SOURCE@unclick/mcp-server

Low RISK CLASS

Category Read

Parameters 32 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/string-distance.md

WHAT IT DOES

What string_distance does on UnClick

AI agents call string_distance to retrieve information from UnClick without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`a`	string	Yes	First string.
`b`	string	Yes	Second string.
`case_sensitive`	boolean	—	Case sensitive comparison (default true).

Parameters from the server's own tool schema.

RISK

Why string_distance is rated Low

This tool performs a pure computation on two input strings, returning a numeric distance/similarity score. It has no side effects, does not read from or write to any external system, and cannot cause harm. It is a stateless mathematical operation.

From the tool's definition Calculate Levenshtein edit distance and similarity between two strings

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs string_distance safely

PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For string_distance, this is the rule to start with:

string_distance Allowed

string_distance is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "string_distance": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every string_distance call is checked against it from then on.

FAQ

Questions about string_distance

What does the string_distance tool do? +

Calculate Levenshtein edit distance and similarity between two strings. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.

What parameters does string_distance accept? +

string_distance accepts 3 parameters: a, b, case_sensitive. Required: a, b. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on string_distance? +

Register the UnClick MCP server in PolicyLayer and add a rule for string_distance: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches UnClick. Nothing to install.

What risk level is string_distance? +

string_distance is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit string_distance? +

Yes. Add a rate_limit block to the string_distance rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block string_distance completely? +

Set action: deny in the PolicyLayer policy for string_distance. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides string_distance? +

string_distance is provided by the UnClick MCP server (@unclick/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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