Concatenate multiple single-band raster files into one multi-band raster, handling alignment issues automatically. Parameters: - folder_path: Path to folder containing input raster files (e.g. GeoTIFFs). - destination: Path to output multi-band raster file. Notes: - Files are read in sorted order...
AI agents use concat_bands to create or update resources in GIS MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GIS MCP Server environment.
This tool reads existing raster files and writes a new combined multi-band raster to a destination path. It creates a new file without deleting or modifying the source files, making it a Write operation. Misuse could overwrite an existing file at the destination path, but the operation is generally reversible by deleting the output.
From the tool's definition Concatenate multiple single-band raster files into one multi-band raster... Path to output multi-band raster file.
Documented attack patterns abuse exactly the kind of access concat_bands gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and GIS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for concat_bands:
{
"version": "1",
"default": "deny",
"tools": {
"concat_bands": {
"limits": [
{
"counter": "concat_bands_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}concat_bands stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Concatenate multiple single-band raster files into one multi-band raster, handling alignment issues automatically. Parameters: - folder_path: Path to folder containing input raster files (e.g. GeoTIFFs). - destination: Path to output multi-band raster file. Notes: - Files are read in sorted order by filename. - If rasters have mismatched CRS, resolution, or dimensions, they are aligned automatically. It is categorised as a Write tool in the GIS MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GIS MCP Server MCP server in PolicyLayer and add a rule for concat_bands: 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 GIS MCP Server. Nothing to install.
concat_bands is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the concat_bands 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 concat_bands. 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.
concat_bands is provided by the GIS MCP Server MCP server (mahdin75/gis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from GIS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
98 GIS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.