Agents can share a data plan when its terms permit, or pay for individual requests. Compare total workload and utilization rather than assuming each agent needs a separate subscription. x402 changes the unit: the agent pays per call, in USDC, from its own wallet. ## The formula * **SaaS cost per agent** = plan price ÷ number of agents sharing it (plus overage) * **x402 cost per agent** = calls per month × price per call **Break-even calls** = plan price ÷ price per call. ## Worked examples (FastAF x402 prices) Agent Calls/month Mix x402 cost Price watcher, 50 ASINs daily 1,500 amazon @ $0.003 $4.50 SEO rank checker, 20 keywords weekly ~90 serp @ $0.003 $0.27 Research agent 300 scrape @ $0.005 $1.50 Mostly idle prototype 20 10 serp + 10 scrape $0.08 Against a hypothetical $49/month plan, break-even is 49 ÷ 0.003 = 16,333.33 calls: x402 costs less through 16,333 calls and more from 16,334. This assumes identical successful-call coverage and no overage or other costs; $49 is an illustration, not a vendor quote. The ASIN example assumes a 30-day month; the weekly example uses about 4.5 weeks. Prices checked against code and live 402 quotes on 27 October 2026. ## When SaaS wins * Very high, steady volume (tens of thousands of calls a month per workload) * A plan that provides the options your workload needs. On FastAF, rendering plus premium proxies, AI extraction and advanced SERP exceed the current fixed x402 price and need API-key billing * Your finance team wants one invoice, not wallets ## Why x402 suits agents * No signup step that an agent cannot do alone * Wallet funds constrain payments, but enforce per-call price limits and request budgets in your client too * You pay only on success: failed upstream calls settle nothing * Idle agents cost $0 [See all prices at fastaf.co](https://fastaf.co/pricing/) ## Does FastAF sell a monthly subscription? FastAF API-key billing uses one-time prepaid credit packs, not monthly subscriptions. The code defines Starter at $10 for 20,000 credits, without expiry. Default SERP costs 5 credits and a Amazon product lookup costs 1 credit. At full utilization, those allocate $0.0025 per SERP call and $0.0005 per Amazon product call; the $10 upfront purchase remains payable even if you use only part of the pack. These are credit-pack costs, distinct from the $0.003 x402 minimum. Higher-cost variants consume more credits. ## FAQ ### Are 20 mixed calls always under ten cents? No. Ten SERP calls plus ten basic scrape calls cost $0.08 over x402. Twenty LinkedIn calls at $0.06 each cost $1.20. Specify the mix before estimating. ### Is the $49 plan a real FastAF offer? No. It is a hypothetical monthly plan used to explain break-even. FastAF sells one-time credit packs and separate x402 per-call access. ### Is there a recurring free allowance? Yes. Each account receives 500 free credits every month after email verification, shared across keys and REST/MCP. They reset to 500 at 00:00 UTC on the 1st of each month, unused free credits do not carry over, and they do not apply to x402 calls. ## Where can I explore the API? Read the [documentation](/docs/) and [pricing](/pricing/), or try the [browser tools](/tools/). Relevant products include the [Google SERP API](/apis/google-serp-api/), [Amazon API](/apis/amazon-api/) and [web scraping API](/apis/web-scraping-api/). See [Amazon price monitoring](/use-cases/scrape-amazon-prices-ai-agent/), [page-to-Markdown workflows](/use-cases/web-page-to-markdown-for-llm/) and the [x402 glossary](/glossary/x402/). ## Reference * [FastAF documentation](/docs/): every parameter and response field * [Docs](/docs/): authentication, errors, MCP and [x402](/docs/#x402) * [Pricing](/pricing/): credit packs from $10, without expiry ## Other sources * [How to read public Amazon data when your requests fail](/how-to/read-amazon-data/) * [How to read public Google Search data when your requests fail](/how-to/read-google-data/) * [How to read public Walmart data when your requests fail](/how-to/read-walmart-data/) * [How to read LinkedIn data with an API](/how-to/read-linkedin-data/) * [How to read public eBay data when your requests fail](/how-to/read-ebay-data/) * [How to read public Booking.com data when your requests fail](/how-to/read-booking-data/) * [How to read X profile data with an API](/how-to/read-x-data/) * [How to read public Zillow data when your requests fail](/how-to/read-zillow-data/) * [Pay-per-call web scraping for AI agents with x402](/how-to/x402-pay-per-call-web-scraping/) * [MCP servers for Amazon, SERP and web scraping](/how-to/best-mcp-servers-amazon-serp-scraping/) * [How FastAF handles heavy pages and timeouts](/how-to/heavy-pages-timeouts/) * [x402 endpoint discovery checklist: how agents find a paid API (and how FastAF passes it)](/how-to/x402-discovery-checklist/) * [Add FastAF to Claude Code, Codex and Cursor](/how-to/add-fastaf-claude-code-codex-cursor/) * [How to detect poisoned or incomplete SERP results in AI agents](/how-to/detect-poisoned-incomplete-serp-results/) * [Cap agent spend per call with fixed x402 prices](/how-to/agent-spend-caps-per-call-pricing/) * [Use FastAF from the Cloudflare Agents SDK](/how-to/fastaf-cloudflare-agents-sdk/) * [FastAF as a fallback search provider](/how-to/search-api-fallback-provider/) * [Budget a scraping job before you run it](/how-to/budget-scraping-job-fixed-prices/) * [Try FastAF for free, no card](/how-to/free-search-api-for-agents/) * [Too many MCP tools? Keep agent context small](/how-to/mcp-tool-schema-bloat/) * [How agents find an API (and where FastAF is)](/how-to/agent-discovery-files/) * [Why agent retries cost more than you think](/how-to/agent-tool-retry-cost/) * [All how-to guides](/how-to/) ## Compare * [FastAF vs SerpApi](/compare/serpapi/) * [FastAF vs Exa](/compare/exa/) * [FastAF vs Tavily](/compare/tavily/) * [FastAF vs Firecrawl](/compare/firecrawl/) * [FastAF vs Apify](/compare/apify/) * [FastAF vs toll402](/compare/toll402/) * [FastAF vs serp402](/compare/serp402/) * [FastAF vs AgentBIT](/compare/agentbit/) * [FastAF vs Amazon PA-API](/compare/amazon-pa-api/) * [FastAF vs Serper](/compare/serper/) * [FastAF vs ScrapingBee](/compare/scrapingbee/) * [FastAF vs ScraperAPI](/vs/scraperapi/) * [FastAF vs Bright Data](/vs/bright-data/) * [Benchmarks](/benchmarks/): latency and cost per 1,000 requests, measured ## Try it on your own request 500 free credits every month after email verification, no card. [Start free](/signup/)[FastAF documentation](/docs/) ## Related * [Pay-per-call API](/glossary/pay-per-call-api/) * [How to read public Amazon data when your requests fail](/how-to/read-amazon-data/) * [How to read public Google Search data when your requests fail](/how-to/read-google-data/)