agent-x402-paywall-mcp 1.0.3

Agent x402 Paywall MCP — wraps Coinbase x402 (HTTP 402) so agents pay per-call without Stripe accounts. On-chain settlement via USDC (Base/Polygon/Solana) or Lightning. The plumbing for the agent economy. By MEOK AI Labs.

mcp-name: io.github.CSOAI-ORG/agent-x402-paywall-mcp

Agent x402 Paywall MCP

🧱 Part of the MEOK A2A Substrate (£499/mo)

See meok.ai/a2a.

HTTP 402 + on-chain settlement — pay-per-call for agents

The product

Wraps the Coinbase x402 protocol (HTTP 402 Payment Required) so AI agents can pay per-API-call without a Stripe customer relationship. Pure HTTP. Zero SDK. Settles on-chain via USDC (Base / Polygon / Solana) or Lightning Network.

Combine with agent-commerce-protocol-mcp (Stripe ACP) and agent-commerce-payments-mcp (AP2 / PSD2 / MiCA) for full coverage of all 3 live agent-payment protocols.

Tools

Tool	Purpose
list_supported_chains()	Base · Polygon · Solana · Lightning · Ethereum mainnet
build_402_challenge(url, amount, currency, chain, expires?)	Build HTTP 402 response
verify_payment(challenge_id, tx_hash, chain)	Verify on-chain settlement
estimate_settlement_cost(chain, amount)	Gas/fee preview
get_payment(payment_id)	Look up a verified payment
list_recent_payments(limit)	Monitor recent settlements

Why this unlocks revenue

The agent economy needs frictionless micropayments. Stripe Connect requires KYC, US-bank linkage, and customer accounts — fine for SaaS, fatal for agent-to-API calls. x402 is the inverse: agent hits URL → 402 → settles on-chain → retries → gets the answer. No accounts, no PII.

For MEOK specifically: this MCP wraps api.meok.ai itself so external agents can pay £0.0002/call to access our 52 MCPs without signing up for Stripe Universal PAYG. Stripe customers stay on Stripe; on-chain customers settle on-chain; same gateway behind both.

Sister MCPs

• agent-commerce-protocol-mcp — Stripe ACP bridge
• agent-commerce-payments-mcp — PSD2/MiCA/AP2
• agent-rate-limiter-mcp — call-count throttling
• agent-token-budget-mcp — spend cap
• agent-audit-logger-mcp — hash-chained payment log

Full catalogue: meok.ai/anthropic-registry

Protocol coverage + Universal PAYG

Option	Price
Self-host MIT	£0
Universal PAYG	£29/mo + £0.0002/call
A2A Substrate	£499/mo
Universe (all 52)	£1,499/mo
Defence	£4,990/mo

Buy: https://meok.ai/a2a

Licence

MIT. By MEOK AI Labs (CSOAI LTD, UK Companies House 16939677).

💸 Try MEOK in 30 seconds — instant buy ladder

Tier	Price	What you get	Stripe
Smoke test	£1	Signed sample MCP-Hardening report + Article 50 PDF	https://buy.stripe.com/dRmcN75ScdQS7oh1Uc8k90U
Quick Kit	£9	EU AI Act Article 50 implementation guide (C2PA + EU-Icon)	https://buy.stripe.com/cNi00la8s1460ZT0Q88k90V
Founder Call	£29	30-min 1-on-1 with the founder	https://buy.stripe.com/8x228ta8s6oqbExaqI8k90W

Refundable. UK Stripe — VAT-clean. Builds on the 81-MCP MEOK fleet. Verify any signed report at https://meok.ai/verify.