Resolve every Norwegian regulatory action a person is currently authorised to perform on behalf of a specific organisation. The lookup combines the actor's Altinn role assignments (DAGL — Daglig leder / managing director, LEDE — Styreleder / board chair, MEDL — Styremedlem / board member, NESTL —...
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AI agents call list_acting_capacity to retrieve information from 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 list_acting_capacity 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": {
"list_acting_capacity": {}
}
}See the full Mcp policy for all 13 tools.
These attack patterns abuse exactly the kind of access list_acting_capacity 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.
Resolve every Norwegian regulatory action a person is currently authorised to perform on behalf of a specific organisation. The lookup combines the actor's Altinn role assignments (DAGL — Daglig leder / managing director, LEDE — Styreleder / board chair, MEDL — Styremedlem / board member, NESTL — Nestleder / vice chair, INNH — Innehaver / sole proprietor, REGN — Regnskapsfører / accountant, REVI — Revisor / auditor) with a conservative role-to-action map maintained in src/lib/altinn/role-action-map.ts. The response returns the raw Altinn role list AND the derived action tokens an agent may safely pass to /v1/actions/execute downstream, with a per-action legal_reference citation pinned to lovdata.no (all 10 entries verified 2026-05-16 — aksjeloven, skatteforvaltningsloven, regnskapsførerloven, revisorloven). Inputs are an 11-digit Norwegian fødselsnummer or D-nummer (which is HMAC-SHA-256 hashed via RECEIPT_HMAC_SECRET before any storage; the raw value is NEVER persisted, NEVER logged, and NEVER returned in the response — the response echoes only actor.fnr_hmac) plus the 9-digit Norwegian organisasjonsnummer of the represented entity. Results are cached for up to 1 hour in resolved_permissions so repeat lookups within the cache window do not re-hit Altinn; metadata.cached === true indicates a cache hit. Required scope: read:altinn. PR-MCP-02b: when ALTINN_MODE=sandbox, returns deterministic fixture payloads for OEM evaluation; metadata.data_sources tags as 'altinn-sandbox' and _meta.is_sandbox=true.. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.
Register the MCP server in PolicyLayer and add a rule for list_acting_capacity: 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 Mcp. Nothing to install.
list_acting_capacity 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 list_acting_capacity 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 list_acting_capacity. 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.
list_acting_capacity is provided by the MCP server (https://www.apier.no/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 13 Mcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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