AI agents use raster_convert to create or update resources in Gdal — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Gdal environment.
Conversion operations typically create new data representations or modified outputs. Without explicit deletion or overwrite semantics in the empty description, this falls short of Destructive.
From the tool's definition Tool name is 'raster_convert' suggesting data format conversion or transformation; sibling tools include 'raster_reproject' and 'vector_convert' which modify geospatial data. The description is empty, limiting definitive classification.
Documented attack patterns abuse exactly the kind of access raster_convert gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Gdal, and nothing reaches the server without passing your rules. This is the rule we recommend for raster_convert:
{
"version": "1",
"default": "deny",
"tools": {
"raster_convert": {
"limits": [
{
"counter": "raster_convert_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}raster_convert 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.
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raster_convert. It is categorised as a Write tool in the Gdal MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Gdal MCP server in PolicyLayer and add a rule for raster_convert: 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 Gdal. Nothing to install.
raster_convert 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 raster_convert 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 raster_convert. 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.
raster_convert is provided by the Gdal MCP server (jordangunn/gdal-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 13 Gdal tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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13 Gdal tools catalogued and risk-classified — across an index of 42,500+ MCP servers.