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PolicyMiddleware

@totemsdk/agent-policy

@totemsdk/agent-policy / PolicyMiddleware

Interface: PolicyMiddleware

A single composable middleware layer in the policy evaluation pipeline.

Each middleware receives the full AgentProposal and returns a decision. Evaluation is read-only. Implementors that need state (rate limits, daily caps) expose the optional reservation lifecycle below.

The middleware API replaces the boolean-based AgentPolicy with a richer three-state result that includes a reason string for auditability.

Methods​

commit()?​

optional commit(operationId): Promise<void>

Commit a prior reservation after execution succeeds.

Parameters​

operationId​

string

Returns​

Promise<void>

evaluate()​

evaluate(proposal): Promise<PolicyEvalResult>

Evaluate a proposal. Called in sequence by ComposablePolicy.

Parameters​

proposal​

AgentProposal

Returns​

Promise<PolicyEvalResult>

release()?​

optional release(operationId): Promise<void>

Release a prior reservation after execution fails or is cancelled.

Parameters​

operationId​

string

Returns​

Promise<void>

reserve()?​

optional reserve(proposal): Promise<PolicyEvalResult>

Reserve state for execution using proposal.id as the idempotency key. Implementations must not consume committed quota during evaluation.

Parameters​

proposal​

AgentProposal

Returns​

Promise<PolicyEvalResult>

reset()?​

optional reset(): Promise<void>

Optional: reset internal state (useful in tests or at midnight rollover).

Returns​

Promise<void>