Honest, side-by-side comparison of x402 and AI agent payment platforms. We believe in transparency — here's exactly how we stack up.
Data sourced from public documentation as of March 2026. We update this regularly.
| Feature | Arch Tools | Nevermined | Skyfire | Interzoid |
|---|---|---|---|---|
| Tools Available | 64+ (AI, web, crypto, NLP, media, utilities) | 0 — middleware only, no tools | 0 — payment infra only | 15+ (data quality & matching) |
| x402 Support | ✓ Native — every endpoint | ~ Protocol-agnostic (supports x402 alongside others) | ✗ Proprietary protocol | ✓ As payment option |
| MCP Server | ✓ SSE + npm + Smithery | ✓ Supported | ✓ Supported | ✓ Supported |
| Chains Supported | 15+ (Base, ETH, Solana, Polygon, Arbitrum…) | Crypto + fiat (details vary) | USDC on select networks | Base (via x402) |
| Pricing Model | Pay per call from $0.001 | Revenue share per transaction | Token-based managed wallets | Credits prepaid system |
| Service Directory | ✓ Searchable catalog + live playground | ✗ No public catalog | ✗ No public catalog | ✗ Own APIs only |
| Open Source | ✓ MIT License | ~ Partial (libraries) | ✗ Proprietary | ✗ Proprietary |
| Self-Hosted Option | ✓ Full self-host | ✗ SaaS only | ✗ SaaS only | ✗ SaaS only |
| Agent Wallet Onboarding | ✓ Streamlined via CDP AgentKit | ~ Credit system (no wallet needed) | ✓ Managed wallets | ✗ Bring your own |
| Protocol Lock-In | None — open x402 standard | Low — protocol-agnostic | High — proprietary tokens | Low — standard API + x402 |
| Live Playground | ✓ Test any tool before integrating | ✗ | ✗ | ~ Interactive data client |
| Analytics Dashboard | ✓ Usage, cost, endpoint health | ✓ Revenue & usage analytics | ~ Basic account dashboard | ✗ |
| Primary Focus | Tools + Directory + Payments | Payment Middleware | Agent Identity + Payments | Data Quality APIs |
How to read this table: ✓ = fully supported, ~ = partial or limited, ✗ = not available. Data sourced from each company's public documentation and websites as of March 2026. We don't make claims we can't back up — if something's wrong, let us know.
We're not just middleware or infrastructure. We ship actual tools.
Nevermined and Skyfire help you pay for APIs. We are the API. 64+ tools covering AI generation, web scraping, crypto data, NLP, OCR, image generation, and more — all through a single endpoint.
The first searchable catalog of x402-enabled services. Browse, test, and compare every x402 API in one place. Nobody else has built this.
Per-call pricing starting at $0.001. No subscriptions, no tiers, no "contact sales." Every tool's price is listed on the site. Agents pay with USDC — humans pay with credits.
MIT licensed, open source, self-hostable. Built on x402 — Coinbase's open standard. Your wallets, your keys, your data. Switch anytime. We earn your business every call.
15+ blockchain networks. Base, Ethereum, Solana, Polygon, Arbitrum, and more. Pay with USDC on whichever chain your agent prefers.
Every single tool has a live playground. Send real requests, see real responses, understand exactly what you're paying for — before writing a line of code.
Nevermined is building payment middleware for AI agents — metering, billing, access control, and settlement. They're protocol-agnostic (MCP, A2A, x402, AP2) and position themselves as the "Stripe for AI agents."
Where Nevermined wins: If you need pure payment infrastructure that works across multiple protocols, Nevermined is focused on exactly that. Their metering and analytics tools are built for billing at scale.
Where Arch Tools wins: We ship the tools themselves — not just the payment layer. Our directory gives agents a place to discover services. Our playground lets developers test before integrating. And we're open source, so you're never locked in.
Skyfire is building "The Agentic Commerce Platform" — agent identity (KYA), managed wallets, and payment tokens. They focus on knowing who your agent is and handling its money.
Where Skyfire wins: Their "Know Your Agent" identity layer is unique. If you need verified agent identities and a fully managed wallet system, Skyfire handles that.
Where Arch Tools wins: Skyfire uses a proprietary protocol — your agents are locked into their ecosystem. We use x402, the open standard backed by Coinbase. No custodial risk, no proprietary tokens, no account required. Plus, we provide the actual tools agents need to call.
Services like Interzoid, RapidAPI, and traditional API marketplaces use subscriptions, API keys, and credit systems. They work — but they weren't built for AI agents.
Where traditional providers win: Established ecosystems, wide selection, familiar billing. If you're a human developer building a traditional app, you know how these work.
Where Arch Tools wins: AI agents can't sign up for accounts, enter credit card numbers, or manage subscription tiers. x402 lets agents pay per-call with USDC — no human in the loop. That's the future of agent-to-service commerce, and we're built for it from the ground up.
100 free credits. 64+ tools. Zero subscriptions.