| What it does | Pay-per-crawl infrastructure for AI agents across ten web stacks
| An engine for long-running agents that rebuilds its prompt under a cap and runs on your budget
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| Stage | Not given
| MVP
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| Founded | Not given
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| Based in | US
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| Pricing model | Paid
| Freemium
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| Pricing | API services priced from $0.005 per call in USDC. Pro plan $4.99 per month for up to 5 sites. x402 Starter Kit from $49.
| Prototype: free during beta, then from December 16, 2026 it costs $1 per 1,000 agent calls after 1,000 monthly included calls. Production: $20 a month with 20,000 agent calls included, then $1 per 1,000 calls after that. Top-ups: $1 per 1,000 calls, from $10 to $500 at a time, never expiring.
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| Key features | - HTTP 402 payment gating across ten web stacks
- Direct wallet payments with no custody or intermediaries
- Support for WordPress, Drupal, Laravel, Next.js, Node, Cloudflare, nginx, Caddy, Traefik and Python
- Shared crawler catalog with 85 agents
- USDC payments on Base mainnet
- Pro dashboard with paywall monitoring and crawler intel
- Discovery files including /.well-known/x402.json, llms.txt and agents.txt
- PayAI default facilitator with support for custom facilitators
- Published to npm, PyPI, Packagist and drupal.org
| - Prompt rebuilt from journal under token cap at each step to keep it bounded as history grows
- Spending limits checked before each model call at token prices you declare
- Resume after crash without repeating finished actions
- Tool calls returned as actions for your code to carry out
- Proof of what ran: check prompts, re-run engine, download hash-chained journal
- Integrations with Vercel AI SDK, OpenAI Agents SDK, LangGraph, Mastra, Pydantic AI
- MCP server for Claude Code, Claude Projects and Codex
- Works with any model via bring-your-own-key
- TypeScript and Python clients for HTTP API access
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| What makes it different | - Single identical payment gate that works across ten different web stacks without requiring accounts or API keys
- 100% of payments go directly to site owners' wallets with no custody or intermediaries
- Runs by one person with nineteen live paid services and no outside capital
- All services self-serve and automated by design with on-chain settlement
| - Bounded prompt under a fixed cap while history grows, so costs per call stop climbing on long sessions
- Every run recorded with cryptographic proof: rebuilable prompts, hash-chained journal, re-runnable engine
- Resumes from crash without repeating finished actions using stable idempotency keys
- Budget enforcement before each model call, not reactive overage billing
- No model key storage or logging; your provider bills you directly
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 26 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 34 | 9 |
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| Referring domains (Majestic) | 168 | 4 |
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Argentic