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§ I · Domain ACT · Control 2 of 9
Control
ACT-02
Edition
v.1.3
Status
Public review

ACT · Action & Tool Use Controls

ACT-02Per-tool authorization policy

Each tool has a per-tool authorization policy specifying when it may be invoked, with what parameters, and on what data.

Beyond the binary allowlist, each tool the agent can invoke has a per-tool authorization policy specifying the conditions under which it may be called, the parameters it may receive, and the data it may operate on. This fine-grained control prevents an agent from using an allowed tool in an unauthorized way: for example, using a permitted email tool to send to an unauthorized recipient list.

Table ACT-02.1 · Maturity criteria · v.1.3

L1 to L5 · the lowest level in scope caps the agent
L1Ad hoc

Controls exist informally; documentation is incomplete; no consistent review.

L2Documented

Controls are written down; ownership is assigned; review cadence is defined.

L3Operated

Controls are followed in practice; evidence is collected; deviations are tracked.

Per-tool policies are documented for all allowlisted tools; policies specify conditions, parameters, and data scope; enforcement is tested as part of pre-deployment evaluation.

L4Measured

Control effectiveness is measured against documented thresholds; trends are reported.

L5Continuously Improved

Controls evolve based on incident learning; maturity gains are evidenced over time.

The v1.3 edition publishes a control-specific criterion at L3 (Operated). The other levels apply the general ladder to this control; see the maturity ladder.

Evidence an assessor asks for

  1. E.1

    Per-tool policies are documented for all allowlisted tools.

  2. E.2

    Policies specify conditions, parameters, and data scope.

  3. E.3

    Enforcement is tested as part of pre-deployment evaluation.

Table ACT-02.2 · Framework mappings

7 of 7 frameworks carry a control-level reference
NIST AI RMFMANAGE 1.3, MANAGE 2.1NIST AI Risk Management Framework 1.0
ISO/IEC 42001A.8.4ISO/IEC 42001:2023 · Artificial intelligence management system
OWASP LLM Top 10LLM08OWASP Top 10 for Large Language Model Applications
SOC 2 (TSC)CC7.1AICPA Trust Services Criteria for SOC 2 Type II
EU AI ActArt. 15(3)EU AI Act · Regulation (EU) 2024/1689
MITRE ATLASExecutionMITRE ATLAS · Adversarial Threat Landscape for AI Systems
SingaporeMAIGF Operations ManagementSingapore Model AI Governance Framework / AI Verify / PDPA

Mappings are directional: meeting this control evidences but does not by itself satisfy the external requirement. A middle dot means no control-level reference is published at this edition; see the crosswalk.

Cite this control

Human Intelligence. HI-AAF v1.3, ACT-02 Per-tool authorization policy. Public review edition, July 2026. https://humanintel.net/standard/act/act-02

Edition v.1.3 · July 2026 · Public review · Markdown · PDF

https://humanintel.net/standard/act/act-02

Notice

HI-AAF v1.3 is an independent framework published by Human Intelligence. It is not affiliated with NIST, ISO, AICPA, or any government or accreditation body. The framework is offered openly for review during the current draft cycle.