GMPayer: A cross-chain x402 payment hub for AI Agents
TechFlow Selected TechFlow Selected
GMPayer: A cross-chain x402 payment hub for AI Agents
LazAI, in collaboration with ZKM, Metis, and GOAT Network, launches GMPayer, an x402-based payment protocol for cross-chain AI payments without intermediaries.
Navigating Web3 tides with focused insightsAI Agents are gradually becoming independent economic participants, autonomously discovering services and executing payments. x402 and GMPayer represent the culmination of all these advancements, creating a decentralized on-chain economy where machines exchange value without intermediaries.
x402 Brings New Solutions and New Challenges
For 30 years, status code 402 has been reserved as a placeholder for "payment required." For AI Agents that autonomously negotiate services, this creates a fundamental bottleneck: they have funds, servers demand payment, but the protocol itself lacks a native way to complete the exchange.
Coinbase and Cloudflare established the x402 Foundation in September 2025 to standardize solutions for an overlooked bottleneck on the internet through decentralization and cryptographic technology. Major tech companies including Google, Visa, AWS, and Anthropic have joined and integrated it into their respective platforms.
However, connecting funds to AI agents is not merely a matter of speed. For x402 to be secure and reliable for AI-to-AI payments, the entire cycle must bind value with proof, rights, policies, and throughput all at once. It requires a fast lane with finality, a truth layer that turns execution into receipts, an ownership layer that correctly pays contributors, and a channel supporting multi-currency liquidity.
Then, it also needs to scale across chains and currencies,without relying on centralized intermediaries.
GMPayer Emerges
GMPayer (GOAT-Metis-Payer) is the first multi-currency payment hub powered by x402, developed collaboratively by LazAI and ZKM, with joint support from Metis and GOAT Network. It enables instant, trustless pay-per-request functionality across multiple blockchains and currencies—without centralized intermediaries, accounts, or manual intervention—allowing x402 to operate across multiple blockchain ecosystems.
Four-Stage Vision
GMPayer's four-stage roadmap outlines the evolution from simple autonomous transactions to a fully decentralized AI economy. Starting with an x402-powered agent payment hub, it will gradually evolve into a universal value exchange layer enabling seamless interactions among AI, data, and services across all chains.
Phase One: Build the Payment Hub
Launch the first x402-based multi-currency payment hub serving AI Agents. Enable agents to independently pay for data and computing resources, creating authentic economic interactions between agents.
Phase Two: Make Payments Trustworthy and Controllable
Users can securely grant micro-payment permissions to their agents, allowing these agents to remain under control with budget limits even outside centralized cloud environments.
Phase Three: AI Business Network
Build an AI business network using DAT as the asset unit. AI services become assets; each invocation becomes a transaction, evolving from mere "tools" into sustainable revenue-generating systems.
Phase Four: Universal AI Value Exchange Layer
Any Web3 chain can seamlessly integrate AI into the application layer.
For Phase One, the GMPayer architecture will be deployed with the following initial configuration:
The Core Power of x402: LazAI x ZKM (Tech) + Metis x GOAT (Eco)
GMPayer leverages strengths from these four domains to make autonomous cross-network payments a reality:
LazAI: Through its Data Anchored Token (DAT) standard, LazAI directly binds provenance, rights, and earnings to datasets and models. Each x402 transaction maps to its contributors, enabling automatic per-call revenue distribution across multiple chains..
ZKM: Leveraging zero-knowledge proof technology, ZKM ensures x402 facilitators maintain verifiability and trustlessness. It validates quotes, authorizations, and payment payloads—providing portable truth for agents and auditors while maintaining neutrality.
Metis: As the core for execution and settlement, Metis anchors transactions on Andromeda and scales inference workloads via Hyperion. Its low fees and rapid finality make x402 micropayments economically viable.
GOAT: As the native Bitcoin settlement layer, GOAT introduces EIP-3009 support and zkRollup infrastructure to bridge stablecoins and Bitcoin between GOAT and Metis with ultra-low-cost cross-chain operations.
Join Us in Pioneering: Step-by-Step Guide
The GMPayer proof-of-concept will demonstrate in real-time how we conduct transactions via x402—you're invited to participate!
What is $BANG?
1. $BANG is a proof-of-concept (PoC) token simultaneously issued on Metis Andromeda and GOAT Network, with a total supply of 1 billion (500 million on each chain); 250 million on each chain will be used for minting and 250 million for liquidity. The $BANG token currently serves only for PoC purposes and has no utilities.
2. Receive 5,000 $BANG tokens for every $1 contributed in $xMETIS or $xGOATED via the x402 standard, as part of the METIS Andromeda and GOATNetwork PoC.
3. You may donate any number of times before reaching the available limit, but each donation is capped at $1.
4. Token minting begins at 00:00 AM China Time on November 4, 2025, and lasts only 72 hours.
How It Works:
Send $xMETIS or $xGOATED via an x402 payment request on Metis Andromeda or GOAT Network.
Each transaction generates a verifiable proof and returns a corresponding amount of $BANG tokens as confirmation.
GMPayer supports both Metis Andromeda and GOAT Network, and allows you to convert tokens between $METIS/$xMETIS and $GOATED/$xGOATED at a 1:1 ratio.
Note: $xMETIS and $xGOATED are EIP-3009-compatible token standards designed to support the x402 protocol standard.
Step-by-Step Tutorial
Choose Network
Select the network you wish to use for payment:
Metis Andromeda (for $xMETIS minting)
GOAT Network (for $xGOATED minting)
Connect your wallet and sign the message.
Ensure you have sufficient $xMETIS or $xGOATED balance.
If you don't have enough $xMETIS or $xGOATED, you can always seamlessly swap $METIS or $GOATED for them with zero slippage.👇
Get xMetis/xGOATED
If you need to convert your tokens, GMPayer offers a built-in "Convert" feature.
Click the "Convert (Conversion)" button at the bottom of the page.
On Metis Andromeda, you can swap $METIS ↔ $xMETIS
On GOAT Network, you can swap $GOATED ↔ $xGOATED
All conversions are at a 1:1 ratio, with no hidden fees and zero slippage. $xMETIS and $xGOATED adopt EIP-3009 to comply with the x402 protocol’s payment token standard.
On the conversion page, enter the amount you wish to convert and confirm. Upon completion, your wallet will immediately receive an equivalent amount of $xMETIS or $xGOATED.
Mint Now
Mint Details
On the minting interface, view the following information:
- Current network
- Total supply of $BANG tokens
- Minting progress (e.g., 5,000 minted / 250,000,000)
Then click "Mint now." Once confirmed, you will instantly receive $BANG tokens.
Important Notes:
- Each time you click "Mint now," after offline signature authorization from your wallet, the system automatically deducts $1 worth of $xMETIS or $xGoated and deposits 5,000 $BANG tokens into your wallet address.
- The token minting event lasts only 72 hours.
Important Disclaimer:$BANG is a proof-of-concept token simultaneously issued on Metis Andromeda and GOAT Network, with a total supply of 1 billion (50% on each chain), currently having no utilities.
The AI Agent Economy Is Now Open
x402 is rapidly becoming a focal point for a new wave of builders dedicated to defining how AI Agents transact.
Together, we will create a cross-chain payment layer with burst-resistant throughput and native settlement between assets. Built on x402, GMPayer is where AI Agents stop talking and start transacting—creating a mediator-free, coordinated AI-to-AI payment economy.
Join TechFlow official community to stay tuned
Telegram:https://t.me/TechFlowDaily
X (Twitter):https://x.com/TechFlowPost
X (Twitter) EN:https://x.com/BlockFlow_News
