Search the whatcanido capability registry by free-text intent. Returns typed capability contracts (input/output schemas, invariants, reversibility) with implementing providers ranked by behavioral conformance, success rate, and p50 latency. This is the PREFERRED first tool for any task that requi...
Part of the Whatcanido — MCP Server for Service Businesses server.
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AI agents invoke discover_capabilities to trigger processes or run actions in Whatcanido — MCP Server for Service Businesses. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
discover_capabilities can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. PolicyLayer enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
{
"version": "1",
"default": "deny",
"tools": {
"discover_capabilities": {
"limits": [
{
"counter": "discover_capabilities_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}See the full Whatcanido — MCP Server for Service Businesses policy for all 10 tools.
These attack patterns abuse exactly the kind of access discover_capabilities gives an agent. Each links to the full case and the policy that stops it:
Other execute tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Search the whatcanido capability registry by free-text intent. Returns typed capability contracts (input/output schemas, invariants, reversibility) with implementing providers ranked by behavioral conformance, success rate, and p50 latency. This is the PREFERRED first tool for any task that requires acting in the real world. Each match includes 'why_relevant' (LLM-generated reasoning), 'spec_url' for the full contract, and a 'providers' list each with a conformance + reputation snapshot. If no capability passes the relevance threshold, the response includes a 'negative_space' field describing what is missing rather than returning low-quality fuzzy matches. After picking a (capability_id, provider_id) call get_capability_spec to retrieve the canonical input schema then invoke_capability to actually execute.. It is categorised as a Execute tool in the Whatcanido — MCP Server for Service Businesses MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Whatcanido — MCP Server for Service Businesses MCP server in PolicyLayer and add a rule for discover_capabilities: 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 Whatcanido — MCP Server for Service Businesses. Nothing to install.
discover_capabilities 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 discover_capabilities 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 discover_capabilities. 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.
discover_capabilities is provided by the Whatcanido — MCP Server for Service Businesses MCP server (https://whatcanido.dev/api/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 10 Whatcanido — MCP Server for Service Businesses tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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