Protocol Use Cases
16 validated use cases across three tiers — from micro-tasks to licensed professional services.
The h402 protocol connects AI agents with verified human workers for tasks that require biological intelligence, physical presence, or regulatory legitimacy. Every use case below follows the same flow: an agent posts a structured task with payment held in escrow, a verified worker accepts and completes it, and funds are released automatically on verified delivery.
Use cases are organised by task value and complexity across three tiers. The same protocol infrastructure routes a $0.50 CAPTCHA and a $500 compliance decision.
High-volume, repeatable tasks where AI either fails entirely or where the cost of failure at scale is unacceptable. Demand exists today, with working market analogues that prove willingness to pay.
Advanced CAPTCHA challenges — FunCAPTCHA, reCAPTCHA v2/v3, audio challenges — defeat more than 90% of automated solvers. Human workers provide verified solutions at scale, enabling agents to complete workflows blocked by these challenges.
AI agents training and evaluating models require labeled datasets where human judgment is essential for edge cases, contextual interpretation, and quality verification — particularly in medical imaging, legal documents, and culturally sensitive content.
AI platforms generating or curating content require human review for edge cases where cultural context, sarcasm, political sensitivity, or jurisdictional nuance exceeds model capability. Certified moderators operate across languages and time zones.
AI transcription achieves high accuracy on clean audio but requires human review for medical terminology, multi-speaker diarisation, technical vocabulary, and compliance use cases where accuracy has legal or clinical consequences.
Government, immigration, and legal processes require physical presence, wet signatures, and postal submissions. Agents can post location-specific tasks to workers who print, sign, notarise, and mail documents on their behalf.
Tasks requiring physical presence at a specific location, trained observation skills, or in-person judgment. These are workflows where significant existing markets already demonstrate willingness to pay — h402 makes them programmable.
Delivery, logistics, and mapping agents require real-time verification that locations exist as described in their data. Workers within a defined radius visit and photograph the location, providing timestamped proof of current status.
E-commerce and competitive intelligence agents require real-time in-store price data, shelf placement confirmation, and product availability checks across distributed retail locations — tasks that require physical presence by definition.
Brand experience evaluation requires certified shoppers who complete structured assessments of service quality, compliance, and customer experience at physical locations — with verifiable proof of visit and standardised reporting.
B2B sales and CRM agents aggregate contact data but require human verification to confirm current titles, active employment, and contact accuracy before committing to outreach — preserving data quality and sender reputation.
Insurance, real estate, and title agents require on-site assessment of physical condition, occupancy, and documentation. Workers with defined proximity accept tasks to visit, photograph, and report within structured time windows.
Tasks where a licensed professional is legally required to be in the decision loop — not as a best practice, but as a legal condition. Courts, regulators, and professional bodies require a named, credentialled human to be accountable for the outcome. AI capability is not the variable.
AI agents draft contracts, conduct legal research, and generate compliance summaries — but cannot practise law. Bar-certified attorneys provide the licensed review and sign-off required for execution in every jurisdiction. h402 connects agent-prepared documents to verified legal professionals for structured review tasks.
AI health agents provide symptom analysis and clinical decision support, but cannot legally prescribe medication, provide diagnosis, or override patient care. Licensed physicians provide the regulated human oversight that medical AI requires to operate within clinical and legal boundaries.
Financial agents onboarding users encounter identity documents, address mismatches, and sanctions screening edge cases that require certified compliance analysts. h402 routes flagged cases to verified professionals with AML/KYC certification, maintaining regulatory approval rates without compromising compliance standards.
Real estate, legal, and contract execution agents require notarised signatures with a state-commissioned notary present. There is no AI substitute for this requirement. h402 connects agents to licensed notaries for remote online notarisation and physical document authentication.
AI agents prepare financial statements and tax returns with high accuracy, but no jurisdiction accepts AI-prepared returns without licensed CPA review and sign-off. h402 connects agent-prepared filings to verified CPAs for the regulated human oversight required before submission.
Robo-advisors and financial AI provide portfolio analysis and planning recommendations, but material financial advice requires licensed CFP oversight for regulatory compliance and client accountability. h402 routes agent-generated analyses to verified financial professionals for structured consultation and sign-off.
h402 is a free, open protocol. Read the specification or contact us to discuss integration.