SignalLayer exposes data APIs as MCP tools. AI agents discover them, pay per query in USDC on Base, and get results — no API keys, no accounts, no human in the loop.
The internet has a payment problem for machines. Credit cards, API keys, and subscription dashboards were built for humans with browsers. AI agents need something different.
AI agent issues a natural-language request. MCP server translates it to SQL and routes to the right data source.
x402 protocol embeds payment instructions in the 402 response: amount, USDC contract, merchant wallet on Base.
Agent signs an EIP-3009 USDC transfer, retries with payment proof. Coinbase facilitator verifies on-chain.
Server confirms settlement, executes the query, returns structured results to the agent. Settlement in ~2 seconds.
x402 revives HTTP 402 as an internet-native payment standard for autonomous agents.
The server responds with a machine-readable challenge: price, token, network, recipient wallet. No API key lookup needed.
USDC is dollar-pegged. $0.01 is always $0.01 — no volatility, no re-denomination. Settled on Base L2 in ~2 seconds.
Model Context Protocol standardizes how agents discover and invoke tools. Payment is just another protocol layer on top.
Built on open standards. No vendor lock-in.
Open standard from Anthropic for connecting AI models to tools and data sources. SignalLayer exposes data as MCP tools, discoverable by any compliant agent.
Coinbase's revival of HTTP 402 as a payment-required status code. Open, Apache 2.0 licensed, governed by the x402 Foundation (Coinbase + Cloudflare).
Coinbase's Ethereum L2. Sub-cent fees, ~2 second finality, USDC-native. The settlement layer that makes sub-penny micropayments economically viable.
Regulated stablecoin, 1:1 USD peg. Payments are always in real dollars. GENIUS Act compliance framing built into the settlement architecture.
The infrastructure for machine-to-machine commerce is here. The question is who builds on it first.
590,000 buyers, 100,000 sellers. The protocol is no longer theoretical — it's processing real transaction volume on Base.
Base L2 fees are sub-cent. At $0.001 per transaction, $0.01 pricing has 90% gross margin. That's the micropayments math.
Agents can't wait hours for settlement. Two-second on-chain confirmation is fast enough for real-time data queries and autonomous workflows.
AI agents are becoming real economic actors. They need data to make decisions, and data providers need a way to charge for it. x402 on Base is that way. SignalLayer is the first data brokerage built for this from the ground up.