Geometriyi basitleştir (Douglas-Peucker algoritması)
AI agents invoke simplify-geometry to trigger actions in PostGIS MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
This tool runs a geometric simplification algorithm (Douglas-Peucker) against spatial data in a PostGIS database. It is an Execute-category operation because it triggers a computational/transformation operation on existing geometry data. The description is in Turkish and provides minimal detail about whether results are persisted (write) or just returned (read), lowering confidence slightly.
From the tool's definition 'Geometriyi basitleştir (Douglas-Peucker algoritması)' — simplifies geometry using the Douglas-Peucker algorithm, which executes a spatial processing operation on database geometry
Documented attack patterns abuse exactly the kind of access simplify-geometry gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PostGIS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for simplify-geometry:
{
"version": "1",
"default": "deny",
"tools": {
"simplify-geometry": {
"limits": [
{
"counter": "simplify-geometry_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}simplify-geometry stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Geometriyi basitleştir (Douglas-Peucker algoritması). It is categorised as a Execute tool in the PostGIS MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the PostGIS MCP Server MCP server in PolicyLayer and add a rule for simplify-geometry: 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 PostGIS MCP Server. Nothing to install.
simplify-geometry is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the simplify-geometry 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 simplify-geometry. 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.
simplify-geometry is provided by the PostGIS MCP Server MCP server (receptopalak/postgis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from PostGIS 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.
25 PostGIS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.