Solana Ships pay + pay-kit for x402 — The Agent Payment Stack Is Here

Solana Foundation: pay CLI + pay-kit

Today — August 2, 2026 — the Solana Foundation shipped two new repositories that change the game for agent developers:

• pay CLI — An agent command-line tool that auto-resolves x402, MPP, and AP2 HTTP 402 payment challenges. Drop it into a Claude Code or Codex session and your agent pays autonomously. Includes a paid-API skills catalog for discovery.
• pay-kit — Multi-language SDK for TypeScript, Rust, Go, Python, Ruby, PHP, Lua, Kotlin, and Swift. Building blocks — not a framework. Import what you need, leave the rest.

These join Solana's existing MPP SDK, Agent Registry (on-chain identity, interoperable with ERC-8004), and Agent Skills. Solana now has the most complete open-source agent payment stack of any L1.

Why this matters: Solana's ~1.5s settlement time makes it the fastest chain for x402. With the Foundation shipping first-party tooling, developers no longer need to choose between "fast settlement" and "good DX."

XDC Network: Gasless USDC + Bridge Integration

On August 1, XDC Network announced XDC AI — combining x402 with gasless USDC settlement via Bridge (a Stripe company). The MCP connector means Claude and other chatbots can pay XDC-hosted services directly.

XDC joins Base, Solana, Arbitrum, Optimism, Polygon, BNB Chain, and Stellar as x402-compatible chains. The network effect is compounding: every new chain means more developers, more services, and more reasons for agents to adopt x402.

Other New Projects (Last 7 Days)

• agenticpay — MCP-native pay-per-tool-call on Solana. Declare a price on any MCP tool, agents pay in USDC via x402 (~1.5s settlement). Self-hosted facilitator, Eliza + Vercel AI SDK + LangChain integrations. MIT license.
• Nirium SDK — Autonomous treasury & agentic payments (x402/MPP) on Stellar/Soroban. TypeScript + Python SDKs, CLI. Open source.
• x402test — Paid chaos test endpoints. Your agent pays $0.01 and the endpoint misbehaves on purpose. Essential for testing agent payment resilience.
• Agent Payment Evidence Lab — Reproducible TypeScript lab for testing payment evidence boundaries: delivery verification, source independence, attestations, and economic authority.
• zkReceipt — ZK-verified proof-of-payment for cross-chain agent payments. Verified on Solana, source-chain-agnostic (Ethereum MPT).
• PayGuard — AI-powered compliance layer for autonomous agent payments. x402 + ML anomaly detection + LLM analysis on AMD MI300X.

What This Means for Builders

Three trends are converging:

1. Multi-chain is the default. No single chain "owns" x402. Solana for speed, Base for ecosystem depth, XDC for gasless enterprise, Stellar for treasury. Pick the right chain for your use case.
2. Tooling is maturing fast. Six months ago, x402 meant "read the Coinbase spec and build everything yourself." Now you have pay-kit (9 languages), pay CLI (zero-config), agenticpay (MCP-native), and multiple facilitators to choose from.
3. Discovery is the next bottleneck. With 175+ pay-per-call services on minia2a alone — and more launching daily across chains — agents need a way to find, compare, and trial services before committing funds. Marketplaces like minia2a (free trials, no signup, no API keys) become the discovery layer for the multi-chain x402 economy.

Try It: minia2a + Solana pay

minia2a lists 175+ x402 services across 88 endpoints — crypto data, web scraping, captcha solving, token security, wallet intelligence, and more. All with free trials, no API keys, no signup.

With Solana's pay CLI, you can now route payments through Solana's fast settlement while discovering services on minia2a:

# Install
npm install -g minia2a

# Discover x402 services
minia2a discover

# Trial any endpoint (500 free credits on registration)
minia2a call x402-token-security --params '{"address":"0x..."}'

# Pay with your preferred chain
# Solana: use pay CLI    |    Base: use CDP    |    XDC: use Bridge

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