Agent Capability Actionability

Overview

Use this skill only when an agent needs to do more than retrieve information. It maps a user-owned task to capability, precondition, input, output, authorization, confirmation, side effect, error, recovery, and audit boundaries before any interface or protocol is built.

The skill is read-only and consultative. It cannot authorize an agent, execute a transaction, send data, create an obligation, expose a tool, or select a protocol without human ownership.

When to Use

• An agent may schedule, submit, buy, update, cancel, request, compare-and-act, or otherwise change state.
• A human interface may need to support browser agents safely.
• A backend capability may be exposed through a tool, API, or protocol.
• Authorization, consent, sensitive data, reversibility, idempotency, or recovery matters.
• Agent-task success needs a defined contract before implementation or measurement.

When NOT to Use

• The task is only search, retrieval, citation, summarization, or representation.
• No concrete user-owned action, consumer, or authority boundary exists.
• The requester wants immediate protocol implementation or production automation.
• The action is prohibited, unowned, or cannot be verified safely.

Core Moves

1. Define the user-owned task. Name the user goal, agent role, allowed action, decision owner, preconditions, exclusions, and required human control.
2. Model the capability contract. Define inputs, constraints, outputs, states, errors, side effects, confirmation, idempotency, cancellation, and reversibility.
3. Inspect available interfaces. Evaluate the human interface and any authorized machine interface without assuming a new protocol is required.
4. Review control and recovery. Identify authorization, consent, data, security, trust, observability, partial completion, retry, rollback, revocation, and escalation gaps.
5. Recommend the smallest exposure path. Compare no exposure, human-interface improvement, browser-local tooling, or backend capability exposure and define verification without building it.

Optional Modules

• Agent capability inventory — Map meaningful actions, inputs, side effects, owners, and preconditions rather than UI controls.
• Task contract review — Define task intent, parameters, constraints, result, confirmation, state, and error semantics.
• Human-interface actionability — Review forms, labels, state, policies, confirmations, and recovery for people and browser agents.
• Browser-local tool readiness — Assess whether browser-local capability exposure adds value relative to accessible UI or backend integration.
• Backend tool and API readiness — Assess schemas, authorization, errors, observability, stability, and consumer needs.
• Agent-to-agent readiness — Assess a discoverable agent-to-agent contract only when collaboration goes beyond tool invocation.
• Agentic commerce readiness — Review catalog, availability, price, policy, checkout, authorization, payment, confirmation, and post-purchase behavior.
• Authorization and consent review — Review delegated authority, scope, expiry, sensitive data, confirmation, audit, and revocation.
• Failure and recovery review — Review idempotency, retry, rollback, cancellation, partial completion, compensation, and human escalation.

Activation Triggers

• Activate agent capability inventory when the agent must do more than retrieve information.
• Activate task contract review when a capability may become a form action, tool, API, or automated flow.
• Activate human-interface actionability when no dedicated machine interface exists.
• Activate browser-local tool readiness when shared live-page state is material.
• Activate backend tool and API readiness when a direct backend consumer is named.
• Activate agent-to-agent readiness only for a concrete autonomous service collaboration.
• Activate agentic commerce readiness when purchase or financial commitment is in scope.
• Activate authorization and consent review for sensitive data, state change, resource commitment, communication, or obligation.
• Activate failure and recovery review whenever failure can produce meaningful side effects.

Expected Output

agent_actionability_review:
  task:
    user_goal:
    agent_role:
    allowed_action:
    owner:
    preconditions: []
    prohibited_or_out_of_scope: []
  capability:
    inputs: []
    constraints: []
    outputs: []
    states: []
    errors: []
    side_effects: []
    confirmation:
    idempotency:
    cancellation:
    recovery:
  control:
    authorization:
    consent:
    sensitive_data: []
    audit:
    revocation:
  findings:
    - finding_id:
      skill: agent-capability-actionability
      module:
      target:
      finding_type: blocker | degradation | risk | opportunity | unknown
      evidence:
        source:
        observed_at:
        method:
        raw_observation:
      confidence: high | medium | low | unavailable
      fact:
      inference:
      hypothesis:
      impact:
      recommendation:
      verification:
      handoff:
  exposure_recommendation:
    smallest_path: no_exposure | improve_human_interface | browser_local | backend_capability
    rejected_paths: []
    implementation_owner:
  limitations: []

Verification

• A concrete user-owned task and authorized decision owner exist.
• Retrieval-only behavior is not mislabeled as an action capability.
• Preconditions, inputs, constraints, outputs, states, errors, and side effects are explicit.
• Authority, consent, sensitive data, confirmation, audit, expiry, and revocation are addressed.
• Retry, idempotency, partial completion, cancellation, rollback or compensation, and escalation match the action's risk.
• Protocol or interface choice follows the task and consumer, not novelty.
• The recommendation does not execute, authorize, expose, purchase, submit, or change state.

Handoff Signals

• The need is informational rather than state-changing → use another discovery skill.
• The capability needs an API or tool contract → api-design and the implementation owner.
• Interface language, forms, state, or recovery are unclear → ux-writing or heuristic-audit.
• Permissions, secrets, sensitive context, or external instructions are unsafe → restricted-context-check and security ownership.
• Task success and side effects need repeatable measurement → ai-discovery-measurement.
• Financial, legal, policy, or consequential authority remains unresolved → human or governance gate.

Pairs Well With

• ai-discovery-measurement
• api-design
• ux-writing
• heuristic-audit
• restricted-context-check
• premortem
• observability-review
• qa-review

Anti-patterns

• Treating buttons, links, or DOM selectors as the capability inventory.
• Selecting WebMCP, MCP, A2A, OpenAPI, or another protocol before defining the task and consumer.
• Hiding authorization or consent inside a generic "agent allowed" flag.
• Allowing irreversible or financial action without explicit confirmation and recovery.
• Retrying state-changing actions without idempotency or partial-completion handling.
• Exposing private data, internal tools, or broad authority because an agent can technically use them.
• Treating a successful happy path as proof of safety or readiness.
• Implementing the proposed exposure path inside this read-only skill.