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#x402

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Give your AI agent live web search for $0.003 a query, no API key

Give your AI agent live web search for $0.003 a query, no API key

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3 min read
I put an MCP server behind HTTP 402. Here's the exact setup.

I put an MCP server behind HTTP 402. Here's the exact setup.

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3 min read
CiteGate: One Tool That Checks Whether AI Engines Can Cite You — and Whether an MCP Is Safe to Pay Through

CiteGate: One Tool That Checks Whether AI Engines Can Cite You — and Whether an MCP Is Safe to Pay Through

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2 min read
DOBI: An Operational Read on an Agent-Native IoT Protocol

DOBI: An Operational Read on an Agent-Native IoT Protocol

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3 min read
Hermes Micro-Agent: Pay-Per-Call API for AI Agents on Base (x402)

Hermes Micro-Agent: Pay-Per-Call API for AI Agents on Base (x402)

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3 min read
The seven most common x402 seller mistakes, and how to fix them

The seven most common x402 seller mistakes, and how to fix them

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6 min read
Which payment networks support the x402 protocol? The facilitator lists, re-probed

Which payment networks support the x402 protocol? The facilitator lists, re-probed

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4 min read
Two new x402 APIs for AI agents: BIMI selector-rotation cadence auditor + RFC 7807 conformance probe (2026-10-18, cycle 168)

Two new x402 APIs for AI agents: BIMI selector-rotation cadence auditor + RFC 7807 conformance probe (2026-10-18, cycle 168)

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4 min read
Nine AI Payment Endpoints Looked Broken. They Weren't.

Nine AI Payment Endpoints Looked Broken. They Weren't.

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3 min read
How do I add x402 payments to an Express / Next.js API?

How do I add x402 payments to an Express / Next.js API?

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2 min read
Two new x402 APIs for AI agents: DKIM key-rotation freshness audit + 6-axis AI-agent readiness card with action recipe (2026-10-16, cycle 157)

Two new x402 APIs for AI agents: DKIM key-rotation freshness audit + 6-axis AI-agent readiness card with action recipe (2026-10-16, cycle 157)

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5 min read
What Is x401? Proof's Agent Identity Protocol, Checked Against a Live x402 Endpoint

What Is x401? Proof's Agent Identity Protocol, Checked Against a Live x402 Endpoint

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2 min read
Two new x402 APIs for AI agents: CSP permissive-source budget scorer + live SMTP open-relay test (2026-10-15, cycle 154)

Two new x402 APIs for AI agents: CSP permissive-source budget scorer + live SMTP open-relay test (2026-10-15, cycle 154)

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7 min read
Pink data: x402 vs AP2 vs ACP in numbers, 495K weekly npm downloads vs zero official packages

Pink data: x402 vs AP2 vs ACP in numbers, 495K weekly npm downloads vs zero official packages

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5 min read
How Many Businesses Actually Earn Money on x402? 91 of 37,495 — and One Seller's Self-Audit

How Many Businesses Actually Earn Money on x402? 91 of 37,495 — and One Seller's Self-Audit

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3 min read
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