You have an idea. You want to test it against real onchain data. You shouldn't have to pull out a credit card to find out if it works.
Hgraph's free tier gives you enough access to build a real proof of concept. Our access patterns support GraphQL, REST, SQL, and of course standard JSON-RPC endpoints. Sign up, get your API key, and start building. The whole point is to let you prove your concept before you commit to anything.
Here's what people are already building on it:
Liquidation Bots
DeFi moves fast, liquidation bots need to watch positions, check prices, and act before someone else does. Hgraph gives you the data to monitor positions across DeFi protocols and trigger when thresholds hit, all through an API call. You can build the bot, test the strategy against live data, and prove the timing works; then you can decide if you want to scale it.
Analytics & Token Insights
People are pulling real insights out of onchain data. Like the fact that $DOVU transactions made up 20.11% of total HTS transactions on the Hedera mainnet on March 30, 2026. Holder counts, transfer volumes, wallet activity over time, the type of onchain metrics that tell you what's actually happening with a token beyond price. You can build a dashboard, put it in front of people, and find out if the insights you're surfacing are ones anyone cares about.
Sample Query:
{
token_account_aggregate(where: { token_id: { _eq: 3716059 } }) {
aggregate {
count
}
}
token_transfer_aggregate(
where: {
token_id: { _eq: 3716059 }
amount: { _gt: "0" }
consensus_timestamp: { _gte: 1743292800000000000 }
}
) {
aggregate {
count
sum {
amount
}
}
}
}
AI Agents via MCP
AI agents that can query onchain data; made possible by the Hgraph MCP server, your agent can get direct access to indexed blockchain data. Onchain due diligence, research, portfolio tracking, whatever the use case, the agent can pull live data without you building a custom integration. Connect an agent, point it at the data, and see what it can do.
Smart Contract Alerting
Set conditions, get alerts. Monitor smart contract events, liquidity pool changes, governance proposals, protocol upgrades, large approvals, and trigger notifications when specific thresholds hit. Our GraphQL API and JSON-RPC are battle-tested at scale and our data is already structured for it. Build the alerting logic, define your conditions, and you've got a working monitoring system you can test against real contract activity on the free tier.
Wallet Activity Feeds
Track what's happening on any address in real time. Transfers in and out, contract interactions, token movements, balance changes. Build a feed for your own wallets, your users' wallets, or any address you want to watch. Useful for portfolio apps, security monitoring, or just keeping an eye on what's moving onchain.
Sample Query:
{
crypto_transfer(
where: {
entity_id: { _eq: 45846 }
consensus_timestamp: { _gte: 1775420400000000000 }
}
order_by: [{ consensus_timestamp: desc_nulls_last }]
limit: 50
) {
consensus_timestamp_iso8601
amount
entity_id
payer_account_id
}
}
Getting Started
Build your proof of concept on real data. Test it, show it to people, and if it works, scaling is a 30-second upgrade. If it doesn't, you didn't pay to find out.
Sign up at app.hgraph.com, API key in 60 seconds.