AI agents use add_photos to create or update resources in Metashape MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Metashape MCP Server environment.
The tool creates new associations between photos and the active chunk in Metashape, modifying the project state. This is neither a read (it changes state), execute (no external commands or code runs), destructive (reversible - photos can be removed), nor financial. Write category fits because it modifies project data reversibly.
From the tool's definition Tool name 'add_photos' with description 'Add photos to the active chunk' indicates it creates or modifies data by adding images to a photogrammetry project. This is a reversible write operation that inputs new data to the system.
Documented attack patterns abuse exactly the kind of access add_photos gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Metashape MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for add_photos:
{
"version": "1",
"default": "deny",
"tools": {
"add_photos": {
"limits": [
{
"counter": "add_photos_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}add_photos 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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Add photos to the active chunk. It is categorised as a Write tool in the Metashape MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Metashape MCP Server MCP server in PolicyLayer and add a rule for add_photos: 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 Metashape MCP Server. Nothing to install.
add_photos 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 add_photos 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 add_photos. 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.
add_photos is provided by the Metashape MCP Server MCP server (jenkinsm13/metashape-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Metashape MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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112 Metashape MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.