Something significant has been quietly taking shape at Ecency and Hive, and today I want to share it with the community.
Over the past weeks We've been working on bringing Hive - and specifically HBD - into a new open payment standard that is gaining serious traction across the Web3 and AI ecosystem: x402.
What is x402?
x402 is an open protocol built on top of the standard HTTP stack. It revives the long-dormant HTTP 402 Payment Required status code and turns it into a fully functional machine-to-machine payment layer. When a client - whether a human app, an AI agent, or any automated service - requests a resource, the server responds with 402 and payment instructions. The client pays, retries, and gets access.
No accounts. No API keys. No credit card forms. Just HTTP and a signed payment payload.
Coinbase launched the protocol, Cloudflare joined as a foundation partner, and it's Apache-2.0 licensed and genuinely permissionless. Any network can implement it.
What We've Built
1. Hive Namespace in ChainAgnostic (merged)
The x402 protocol uses CAIP-2 chain identifiers to specify which network a payment settles on - for example, eip155:8453 for Base. For Hive to participate as a first-class network, it needed a proper namespace registration in the cross-chain standard.
PR #174 to the ChainAgnostic/namespaces repository has been merged. It adds:
A CAIP-2 profile for Hive chain identifiers (
hive:mainnet)A CAIP-10 profile for Hive account identifiers (human-readable names, not hex addresses)
This is foundational work. Any protocol, wallet, or tool using CAIPs can now reference Hive natively and unambiguously.
2. Hive Scheme Spec in x402 Core (under review)
PR #1330 to the main coinbase/x402 repository adds Hive as a supported network in the exact payment scheme specification. It introduces:
specs/schemes/exact/scheme_exact_hive.md- a full scheme spec covering payload structure, secp256k1 signature verification against on-chain active key authorities, and settlement via direct transaction broadcastUpdates to the core
scheme_exact.mdto include Hive in the network reference list and critical validation requirements
This is a specification-only PR - the reference implementation is already complete and published separately. If you have some github (hive) power, feel free to leave a comment and encourage faster review. 😀
3. hive-x402 - The Full Implementation
The complete package lives at ecency/hive-x402, is published on npm as @hiveio/x402, and has a public facilitator running live at x402.ecency.com.
It includes everything needed to participate in the x402 ecosystem from the Hive side:
Facilitator server - verifies secp256k1 signatures against a Hive account's on-chain active keys, broadcasts HBD transfers, and tracks nonces to prevent replay attacks. Ships with SQLite out of the box and Redis for production. The public instance at x402.ecency.com is free to use.
Express, Next.js, and Hono middleware - gate any API endpoint behind an HBD micropayment with a single function call:
app.get("/api/premium", paywall({
amount: "0.050 HBD",
receivingAccount: "your-hive-account",
facilitatorUrl: "https://x402.ecency.com",
}), handler);
Client library - transparently handles the full 402 → sign → retry flow for AI agents and apps. Also ships browser-compatible building blocks for signing via Hive Keychain or HiveAuth without any Node.js dependencies.
const client = new HiveX402Client({
account: "alice",
activeKey: "5K...",
maxPayment: 0.1,
});
const res = await client.fetch("https://api.example.com/premium");
The implementation has 59 passing tests covering end-to-end payment flows, signature verification edge cases, nonce stores, rate limiting, malformed headers, and Express/Next.js middleware.
Why Hive + HBD is a Natural Fit
Hive has always had the technical properties that x402 needs but that most networks struggle to offer:
$0 transaction fees - every micropayment arrives in full. No gas eating into small amounts, which is the core problem that made earlier crypto micropayment ideas impractical.
3-second finality - settlement is near-instant. No waiting for confirmations.
HBD - an algorithmic stablecoin pegged to $1 USD. No volatility risk for service providers, no token approval steps needed.
Human-readable accounts -
alicepaysyour-service, not0x742d35Cc.... This matters for readability in logs, agents, and tooling.Battle-tested - Hive has processed billions of transactions since 2016.
As AI agents increasingly need to transact autonomously - paying for APIs, data, compute, and content - they will reach for payment rails that work programmatically over HTTP. With these contributions, Hive and HBD are now a legitimate option in that ecosystem alongside Base and Solana, with a proper namespace, protocol-level specification, a working facilitator, and a complete npm package.
For Ecency specifically, this opens a path where AI Credits/Points, Custom API access, and other services can be monetized using standard x402 middleware - the same pattern any Express or Next.js developer already knows, just settling in HBD.
Get Started
npm install @hiveio/x402
Live facilitator: https://x402.ecency.com
npm:
ChainAgnostic PR (merged): https://github.com/ChainAgnostic/namespaces/pull/174
x402 Core PR: https://github.com/coinbase/x402/pull/1330
The facilitator is free to use. If you're building APIs, AI tools, or any service that could benefit from zero-fee HBD micropayments, everything is ready to experiment with today. Feedback and contributions welcome.