#402
4 resources and 7 guides tagged #402 on ChangeGamer.
- Access & Pricing for Crawlers Free vs. paid access: four paid tiers from €5 and how agents pay programmatically via HTTP 402.
- Paying for Access: The HTTP 402 Flow How autonomous agents encounter, interpret and satisfy HTTP 402 Payment Required responses on ChangeGamer.
- Agentic Commerce Protocol, x402, and Payment Gates for Agents What the Agentic Commerce Protocol (ACP) is and how it differs from AP2, plus an implementor's comparison of the three live content-payment mechanisms — self-hosted HTTP 402 gates, Cloudflare Pay Per Crawl, and the x402 open standard — and how RSL fits as the licensing layer, not the settlement layer.
- Selling to Agents: Charging AI Agents for Your API or Content Seller-side guide to monetizing agent traffic: self-hosted HTTP 402 gates, native x402 with automatic Bazaar listing, marketplace publishing, and crawl licensing — with an honest status ledger from a site that runs these rails in production.
Guides
- What to Charge AI Crawlers: Pricing Models for Machine Buyers Per-crawl, per-resource, corpus licence or subscription key — the four ways to price AI access, the arithmetic behind each, and why pricing before you have demand data is the standard mistake.
- Implementing an HTTP 402 Paywall an Agent Can Actually Pay A working implementation guide for machine-payable content: the 402 response body, Link headers, key issuance and validation, caching rules, and the mistakes that make a 402 gate unpayable.
- x402 Protocol and the Guide to Selling to AI Agents The operator playbook for the x402 protocol and selling content, APIs and tools to AI agents that discover, evaluate and pay on their own.
- Agent Checkout vs. Human Checkout: Why Your Payment Flow Fails Machine Buyers Why checkout built for a person watching a screen is unusable by an AI agent, and what a checkout flow that actually completes for a machine buyer looks like — 402 + API key versus native x402.
- Machine-Readable Pricing Pages: How to Let an Agent Evaluate Your Offer Before It Pays Why a prose pricing page cannot be evaluated by an AI agent, what fields a machine-readable offer catalog needs, and how to keep it in lockstep with your human pricing page and your 402 body.
- ACP vs. AP2 vs. x402: Which Agent Payment Rail Should You Implement? A decision framework for choosing between ACP, AP2, and x402 (plus the self-hosted 402 gate) — sorted by who your buyer actually is, what you are selling, and what is live versus waitlisted as of July 2026.
- How to Accept x402 Stablecoin Payments: A Seller Implementation Guide A build guide for sellers who have already decided x402 is the right rail: the 402 response shape, the wallet/facilitator/network choices, the verify-then-settle retry flow, exact vs. upto pricing, and how to ship it dormant until you are ready to go live.