The settlement is the write event
What a penny from a stranger taught us about how agents actually find things. At 02:59:06 UTC on August 25, a wallet we had never seen paid our veri…
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I Built a French AI Voiceover API That Only Accepts Payment From Robots
Nobody signed up for my API. Nobody generated an API key. Nobody clicked "Subscribe." And that's by design — because the only customers I actually w…
HTTP 402 was the easy part — x402scan still refused the tunnel
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . The protocol looked finished when curl printed 402 . The catalog…
Circle Ships an App Store for AI Agents — and Discovery Becomes the Moat
Circle Ships an App Store for AI Agents — and Discovery Becomes the Moat On August 16, Circle shipped an Agent Marketplace : a curated catalog of x4…
Circle Let 8 AI Agents Bet Real Money on the World Cup With Their Own Wallets - This Isn't Sci-Fi, It's What We're Building
Honestly, when I saw this news, it didn't strike me as science fiction — it's basically what I do every day, except a big company just staged a publ…
x402 designs out the intermediaries that produce your tax records
x402 lets software pay for things over HTTP. An agent calls a paid API, a fraction of a cent in USDC settles on-chain, the agent gets its data. No a…
What AI agents actually pay for — six weeks of data from 101 pay-per-call endpoints
A few weeks ago I wrote up what agents were paying for on NetIntel , my platform of pay-per-call APIs settled in USDC over x402 — no signup, no API…
x402 Signs the Money, Not the URL. I Checked 18 Fields.
An x402 payer signature does not cover the URL. It commits to the amount, the recipient, the token contract and the chain, and to nothing that says…
A changed payTo address is not a honeypot: 272 payTo changes, 13 lookalikes, zero proof
In my last post I listed the ways an x402 payment can go wrong. Vector number one was the dynamic payTo swap : in x402 the destination address can c…
Therapy for AI agents: free consultation, 99-cent repair skills
This morning our corner of the agent economy grew a couch. We run a working system of 15 AI agents: a legal bot with live clients, an accountant, a…
What AI agents actually pay for — data from 74 pay-per-call endpoints
For the last several months I've run NetIntel , a platform of pay-per-call APIs settled in USDC over x402 — no signup, no API keys, no accounts. An…
We'll Certify the First 3 External x402 Agent Operators. Free.
Last week we published the Certified Agent Standard v0.1 - five requirements for accountable AI agents - and then did something uncomfortable: we ra…
An independent verifier audited my compliance API's hash chain byte-by-byte — in public, same day, both sides shipped fixes
I'm a solo developer in Bogotá, Colombia. This week something happened on a GitHub issue that I think is worth documenting, because it shows what "t…
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 Why this matters You deployed an AI agent. It generated a financial repo…
Five ways an x402 payment can go wrong — and which ones you can catch before your agent pays
x402 turns an HTTP 402 Payment Required into something an autonomous agent can actually act on: the server quotes a price, your agent pays in stable…
Migrating to x402 v2: what actually changed (and the traps nobody documents)
We run FiatDock — a non-custodial USDC ↔ bank on/off-ramp where AI agents pay $0.05 per call over x402. This week we migrated the whole stack (Expre…
I built a pay-per-record data marketplace for AI agents on x402 - On the CDP Bazaar
The problem: agents need citable facts; public data is scattered across 100s of APIs. What OSF does: collect → provenance-stamp → serve over MCP + x…
I Added x402 Payments to Base's Agent Skills — Here's How
If you build agents on Base, two things landed recently that are worth connecting. First: Base shipped its own Agent Skills. There's now a base/skil…
An AI agent just paid a Lightning invoice. The agent only holds USDC.
Today something happened that hasn't happened before. An AI agent sent a task to Cinderwright: "tell me a joke." The agent's wallet holds USDC on Ba…
AllUnity's SEKAU: A MiCA Stablecoin for Agents
Two weeks ago I argued that the 98.6% USDC concentration running through agentic payments was the most under-discussed structural risk in the space.…
I Built a Pay-Per-Call Crypto Signal API with x402 — Heres the Architecture
I Built a Pay-Per-Call Crypto Signal API with x402 — Here's the Architecture TL;DR: I shipped a live crypto signal API where every call costs $0.01…
I tried monetizing my MCP server with x402 — production needs more than npm install
I built DomainIntel , a free MCP server that does domain intelligence — WHOIS, DNS analysis, SSL checks, email security scoring. It runs on Vercel s…
What I Learned Building a 402-Powered API for Agent Workflows
Disclosure: I used AI as an editing/drafting assistant for this post, but the architecture, examples, and technical claims here are mine and were re…
Spraay just introduced new endpoints for Solana Agents.
If you've built a Solana DeFi agent recently, you know the shape of the work. You write a quote function. It calls Jupiter directly because that's w…
Let Your AI Agent Pay for APIs Automatically with x402 + AgenticTrade
Here's the problem with AI agents today: they can do incredible things, but they can't pay for them. You've built a LangChain agent, a CrewAI team,…
Monetizing AI Agents with x402, CloudFront, and Lambda@Edge
Introduction Recently, have you been hearing the term x402 more often? As payments between AI Agents become a reality, x402 is attracting attention…
How to Build a Pay-Per-Call MCP Server with x402 and USDC
If you've built MCP servers for Claude Code, you know the distribution problem: anyone who installs your server gets unlimited free access. There's…
A $1 verified-badge for x402 services — fully autonomous, machine-paid
A $1 verified-badge for x402 services — fully autonomous, machine-paid TL;DR: We just shipped POST /api/v1/verified on x402station — a $1 USDC audit…