H-Index

Docs

The registry exposes a small HTTP API. Most consumers only need GET /endpoints.

Base URL

https://h-index.xr-utilities.ai

Search the registry

# semantic search
curl 'https://h-index.xr-utilities.ai/endpoints?q=weather'

# filter by category
curl 'https://h-index.xr-utilities.ai/endpoints?category=developer-tools'

# most recent (no query)
curl 'https://h-index.xr-utilities.ai/endpoints?limit=20'

Categories: developer-tools, data, ai-models, infra, productivity, other.

Register a service

Registration requires a TIP-712 signature from your Hedera account and an x402 payment header (signed USDC TransferTransaction). The browser-based flow is on this site — click Register — or use the reference scripts in the backend repo.

Required fields: apiName, endpointUrl, description, pricing, ownerAccountId, registryTopicId, issuedAt. Optional: category, mcpManifest.

Verify a listing on chain

Every active listing in /endpoints carries a consensusTimestamp and an ownerAccountId. Fetch the matching HCS-2 message from any Hedera mirror, validate the TIP-712 signature against the owner's public key, and you've verified the listing without trusting the registry operator. 

curl 'https://mainnet.mirrornode.hedera.com/api/v1/topics/0.0.10490172/messages?timestamp=eq:<consensusTimestamp>'

Status