Return a shareable browser URL for the embedded APS viewer and a matching QR code for mobile/XR handoff. Does not require the model to be fully translated — the viewer page will poll the manifest. When to use: you need to hand a stakeholder a URL to see the 3D model in a browser, or print a QR fo...
Part of the ScanBIM MCP server.
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AI agents call get_viewer_link to retrieve information from ScanBIM MCP without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though get_viewer_link only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"get_viewer_link": {}
}
}See the full ScanBIM MCP policy for all 19 tools.
These attack patterns abuse exactly the kind of access get_viewer_link gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Return a shareable browser URL for the embedded APS viewer and a matching QR code for mobile/XR handoff. Does not require the model to be fully translated — the viewer page will poll the manifest. When to use: you need to hand a stakeholder a URL to see the 3D model in a browser, or print a QR for a jobsite. When NOT to use: you need the raw APS URN for programmatic API calls — use the model_id you already have instead. Do not use to check translation progress — call get_model_metadata. APS scopes: none (URL assembly only); the viewer page itself uses viewables:read data:read server-side via /token. Rate limits: APS default ~50 req/min per app per endpoint; Model Derivative translation jobs ~60 req/min; OSS uploads size-limited per file to 100MB for direct upload, larger via resumable. Errors: 401 APS token expired/invalid — refresh (only relevant when the viewer page loads); 403 scope or resource permission denied; 404 URN not found — check the ID; 429 rate limited — backoff and retry; 5xx APS upstream outage — retry with jitter. Side effects: READ-ONLY and pure. Idempotent: same model_id always returns the same URL + QR.. It is categorised as a Read tool in the ScanBIM MCP MCP Server, which means it retrieves data without modifying state.
Register the ScanBIM MCP server in PolicyLayer and add a rule for get_viewer_link: 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 ScanBIM MCP. Nothing to install.
get_viewer_link 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 get_viewer_link 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 get_viewer_link. 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.
get_viewer_link is provided by the ScanBIM MCP server (https://scanbim-mcp.itmartin24.workers.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 19 ScanBIM MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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