astar_path
Find the shortest path on a 2D grid using the A* algorithm.
This record as markdown: /tools/io-github-malamutemayhem-unclick-mcp-server/astar-path.md
What astar_path does on UnClick
AI agents call astar_path 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 |
|---|---|---|---|
end | array | Yes | [row, col] end position |
grid | array | Yes | 2D grid (0 = passable, 1 = wall) |
start | array | Yes | [row, col] start position |
diagonal | boolean | — | Allow diagonal movement (default true) |
Parameters from the server's own tool schema.
Why astar_path is rated Low
The A* algorithm is a pure computational search algorithm that takes grid/map data as input and outputs a path solution. There is no indication of data modification, deletion, execution of external code, or financial impact. It is a deterministic read-only query of algorithmic nature, making it a Read category tool with low severity risk.
From the tool's definition Tool description states it 'Find[s] the shortest path on a 2D grid using the A* algorithm.' This is a pathfinding computation that reads grid data and returns calculated results with no side effects, data modification, deletion, or external operations.
Attacks that exploit this kind of access
The rule that runs astar_path 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 astar_path, this is the rule to start with:
astar_path is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every astar_path call is checked against it from then on.
Questions about astar_path
Find the shortest path on a 2D grid using the A* algorithm. It is categorised as a Read tool in the UnClick MCP Server, which means it retrieves data without modifying state.
astar_path accepts 4 parameters: end, grid, start, diagonal. Required: end, grid, start. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for astar_path: 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.
astar_path is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the astar_path 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.
Set action: deny in the PolicyLayer policy for astar_path. 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.
astar_path 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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