x402-kit: per-call USDC paywall middleware for Express
Public repository (github.com/Jakuraa/x402-kit). Express middleware that charges USDC per API call using the x402 protocol, verified and settled through the Coinbase CDP facilitator.
Jakuraa Commercial Private Limited, incorporated in Coimbatore in 2019, is a corporate technology institution developing software infrastructure for AI-agent workflows, programmatic service access, and machine commerce. Satelink is its flagship platform.
x402-v1 / RevenueVaultV2
Autonomous Agent Request
Client initiates RPC, inference, or trading telemetry query.
Machine Payment Required
Header returned with cryptographically signed price quote.
Micropayment Verification
Base (USDC x402) or Polygon PoS (USDT RevenueVaultV2).
Verified Execution & Receipt
Workload dispatched; cryptographic receipt reconciled on-chain.
Satelink is the flagship technology platform engineered by Jakuraa. It provides the programmatic service discovery, payment rails, vaults, and usage-metered gateways that let autonomous software agents and automated systems discover, evaluate, access, and procure digital capabilities per call. Satelink Trading AI is its first intended application, currently in controlled paper-trading beta.
Machine payments settled in USDC on Base, transmitted and verified directly inside HTTP request headers.
Permissionless USDT deposits to RevenueVaultV2 on Polygon PoS, credited as prepaid, metered usage.
The six autonomous phases executed when software agents discover, acquire, and settle commercial resources.
Agent queries decentralized service registries or MCP endpoints to identify required capabilities.
Protocol provides machine-readable contract interface specifications and structured endpoint documentation.
Autonomous agent evaluates economic utility, latency bounds, and rate quotes against budget constraints.
Micropayment committed via HTTP 402 header in USDC on Base or via prepaid Polygon USDT credit vault.
Cryptographic reconciliation executed on-chain via smart contracts without intermediaries.
Workload executed, metered, and logged. Agent continues workflow execution loop autonomously.
An application where AI models analyze market structure and propose suggestions, while deterministic risk engines and signed user mandates decide. Currently in controlled paper-trading beta; live execution is not yet available. Your money stays at your broker and withdrawals are never enabled.
Orderbook depth, liquidity flow, and on-chain telemetry consumed and paid for on a per-query basis without recurring subscriptions.
A deterministic scorecard gives GO, WAIT or REJECT with its evidence. A failed hard gate always overrides a high score.
Orders pass a fixed risk engine and your signed mandate, then go to your broker exactly once, with a receipt for every step.
Continuous micro-metering of market data feeds and RPC endpoints via x402 headers without manual billing cycles.
USDC on Base and USDT on Polygon deployed on mainnet; settlement proven with mainnet transactions.
Paper trading in controlled beta. Live execution is not yet available.
Cooperative cross-agent liquidity coordination and multi-asset autonomous risk management in research.
The commercial internet was designed around human workflows: manual credit card forms, monthly subscription cycles, legal contracts, and accounting departments.
Autonomous AI agents cannot sign credit card agreements, solve CAPTCHAs, or wait for billing cycles. To interact with paid tools, APIs, and data sources, they require protocol-level rails that allow them to discover pricing, commit payments, and verify delivery in milliseconds.
Credit cards, invoice cycles, 2.9% merchant interchange, manual dispute processes.
HTTP 402 headers, per-call micro-metering, sub-cent L2 settlement, cryptographic receipts.
An autonomous agent or machine calls a Satelink endpoint, such as a blockchain RPC method or inference API.
If the call is not yet paid for, Satelink answers with HTTP 402 and machine-readable payment terms and rates.
The caller pays for that request in USDC on Base via x402, or from prepaid USDT credits on Polygon PoS.
The request is served and metered. The payment and the usage record reconcile on-chain with cryptographic certainty.
Satelink bridges autonomous agents with external tools, financial data feeds, and enterprise services through standardized protocols.
An MCP server (satelink-mcp) exposes Satelink tools to agents that speak the Model Context Protocol. Actions that move money require approval.
High-throughput endpoints for programmatic telemetry, pricing discovery, and real-time execution feedback.
Market and network data from named upstream providers, with the source of every feed stated.
Settlement on Base (USDC, x402) and Polygon PoS (USDT, RevenueVaultV2) using standard EVM tooling.
While AI trading agents and machine-to-machine commerce are Satelink's initial focus, our long-term architectural roadmap expands toward an institutional autonomous assistant capable of executing complex multi-step operations across enterprise workflows.
Enabling software agents to coordinate tasks across external cloud services, databases, and third-party APIs without manual human hand-offs.
Connecting enterprise AI assistants with distributed private tool servers, ensuring verifiable cryptographic access control and audit trails.
Cryptographically enforcing spending limits, rate caps, and multi-signature authorization rules for agent-driven commercial transactions.
Formal specifications, protocol designs, and technical research papers documenting our machine commerce architecture.
Public repository (github.com/Jakuraa/x402-kit). Express middleware that charges USDC per API call using the x402 protocol, verified and settled through the Coinbase CDP facilitator.
Permissionless USDT deposit vault at 0x577D3716d6Ad5b676d230f5409deF9838FABaCEF that backs Satelink prepaid credits. Source in the Satelink_Network repository (contracts/).
The convergence of autonomous AI agents, machine payments, and Layer-2 settlement is establishing a new financial paradigm.
Satelink was not conceived in a purely theoretical vacuum. Before developing autonomous machine commerce rails, Jakuraa spent seven years operating across the physical economy: assembling GPU compute rigs in 2019, distributing industrial machinery at Falcor, and managing daily retail inventory across 3,000+ SKUs at Wholesale Syndicate supermarket.
Explore the complete chronological archive of Jakuraa's commercial ventures, physical experiments, operational learnings, and architectural evolution from physical trade to autonomous software.
Review our statutory incorporation details (CIN, GSTIN, DGFT IEC), operating principles, constitutional objects, and leadership disclosures for Jakuraa Commercial Private Limited.
Jakuraa is registered, operating, and building. If you are developing systems that require resilient machine commerce infrastructure, we welcome inquiries.