Meterhook
A billing middleware layer that binds an API request to a versioned seller-defined chargeability contract, evaluates observable response evidence, records uncertainty and overrides, and sends approved usage, credits, disputes, settlement status, and reconciliation to existing billing and payment systems.
The research confirms established usage billing, an AI-output quality and adjusted-pricing product, an agent-oriented per-request settlement service, and raw usage-meter primitives. It found no reviewed product combining an existing-API gateway, a seller-defined response-time predicate, and automatic failure credits. No structural incumbent copying cost is evidenced.
Meterhook cannot establish a customer's business outcome at response time unless that outcome is both contractually defined and actually observable then. HTTP status, schema validity, latency, model score, tool completion, downstream acknowledgment, human acceptance, conversion, and economic value are different facts. A seller-authored predicate can be wrong, biased, incomplete, changed, or gamed.
The product should call the result chargeable, non-chargeable, provisional, disputed, or unknown under a named contract version—not successful in an absolute sense. Billing events, invoice lines, credits, refunds, payment authorization, settlement, tax, accounting treatment, revenue recognition, disputes, and final customer value remain separate authorities.
API product, finance, and developer-platform teams selling agent-callable services with measurable technical delivery conditions.
API product and finance teams own metering and commercial terms.
Reusable contract schemas and predicate libraries can scale across validated API categories.
Four adjacent approaches support agent-oriented billing, but none establishes the exact combined category.
Several adjacent billing attempts, a specific API seller buyer, versioned outcome contracts, response evidence, provisional states, credits, disputes, and reconciliation create a concrete infrastructure wedge.
Business outcomes are rarely observable at response time, predicates can be gamed, billing and payment rules vary, payment rails are sticky rather than exclusive, and incumbents can add evaluation and credits.
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