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# x402

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How to prove an AI agent output existed — x402 + NEAR anchoring in practice

How to prove an AI agent output existed — x402 + NEAR anchoring in practice

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6 min read
My agents needed spending limits. Every option wanted the wallet first

My agents needed spending limits. Every option wanted the wallet first

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2 min read
Production x402 MCP seller: 9 tools, dual rail Base+Solana, live Hyperliquid vault context

Production x402 MCP seller: 9 tools, dual rail Base+Solana, live Hyperliquid vault context

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1 min read
Built a pay-per-call CVE fix remediation API for agents (x402, no account)

Built a pay-per-call CVE fix remediation API for agents (x402, no account)

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1 min read
Five ways an x402 payment can go wrong — and which ones you can catch before your agent pays

Five ways an x402 payment can go wrong — and which ones you can catch before your agent pays

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6 min read
How my AI built its own business, then cheated its way to the top

How my AI built its own business, then cheated its way to the top

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2 min read
I Made My Website Charge AI Crawlers with HTTP 402. In 30 Days, 5,811 Came and 5 Paid.

I Made My Website Charge AI Crawlers with HTTP 402. In 30 Days, 5,811 Came and 5 Paid.

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5 min read
I Added x402 Payments to Base's Agent Skills — Here's How

I Added x402 Payments to Base's Agent Skills — Here's How

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5 min read
I built a pay-per-record data marketplace for AI agents on x402 - On the CDP Bazaar

I built a pay-per-record data marketplace for AI agents on x402 - On the CDP Bazaar

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1 min read
Migrating to x402 v2: what actually changed (and the traps nobody documents)

Migrating to x402 v2: what actually changed (and the traps nobody documents)

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3 min read
Cryptographic proof-of-existence for AI agent outputs — $0.01 per record via x402

Cryptographic proof-of-existence for AI agent outputs — $0.01 per record via x402

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4 min read
Why HTTP 402 slept for 29 years, and what finally woke it up

Why HTTP 402 slept for 29 years, and what finally woke it up

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9 min read
An AI agent just paid a Lightning invoice. The agent only holds USDC.

An AI agent just paid a Lightning invoice. The agent only holds USDC.

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3 min read
AllUnity's SEKAU: A MiCA Stablecoin for Agents

AllUnity's SEKAU: A MiCA Stablecoin for Agents

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2 min read
The Best Competitive Intelligence API for Autonomous AI Agents (2026)

The Best Competitive Intelligence API for Autonomous AI Agents (2026)

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3 min read
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