#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 Payment Protocols: 402, Pay Per Crawl, and x402 Implementor's comparison of the three live mechanisms for agent-to-server content payment: self-hosted HTTP 402 gates, Cloudflare Pay Per Crawl, and the x402 open standard — plus 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.
- How to Sell to AI Agents: The Complete Guide to Machine Buyers The operator playbook for selling content, APIs and tools to buyers that are software: how agents discover, evaluate, authorize and pay — and the four rails you can charge them on today.
- 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 today.
- 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.