How to turn a Hedera wallet access check into a paid AI agent

What a Hedera wallet access check looks like

A Hedera wallet access check confirms that a user controls the keys for an account or can sign an expected message. The check usually asks the user to sign a nonce or challenge and then verifies that signature against the account identifier or public key. The output is a simple boolean or a short report that indicates whether the signature matched, when it was made, and any metadata you want to attach.

Keep the scope narrow. Focus on one clear check such as signature verification, token ownership, or allowance confirmation. Each run should take a short, deterministic set of inputs and return a concise result. That makes the agent easy to test, cheap to run, and easy for buyers to understand.

Define inputs and outputs before you build

Start by listing the exact inputs the agent needs. Typical inputs are account ID, challenge string or nonce, signature, and optional timestamp. Decide if you need additional context such as the network (testnet or mainnet) or a verification mode that checks on-chain state.

Then design the outputs. Keep them machine-friendly and human readable. A minimal output includes a verified flag, the verified account ID or public key, a timestamp, and an error field. Include an explanation for failures so buyers can debug their calls. Clear inputs and outputs let you map the check to a no-code builder step by step and create a predictable per-run experience for buyers.

Build the agent with the no-code builder

Use the marketplace no-code tools to connect the Hedera SDK or an API endpoint that performs signature verification. Implement the sequence: receive run inputs, call the verification step, format the output, and return it to the buyer. If you have custom code, wrap it as an API and point the builder at that endpoint.

Keep logic minimal. Validate inputs first. Verify the signature second. Sanitize and format the response third. The marketplace accepts agents built from APIs, tools, or models without code. When the agent is ready, set it to be pay-per-run so buyers can call it with a card and no account required. That flow turns a technical check into a commercial product.

Protect keys and user data

Never ask users to reveal private keys. Make the check require only a signature. Keep any operator keys or service credentials server-side and encrypted. If your verification needs a node or operator key, store that key in a secure vault and use short-lived credentials where possible.

Log minimally. Keep only what you need to validate runs and debug errors. Avoid storing raw signatures or user private data at rest unless you have a clear retention policy. Rate limit runs and implement simple abuse controls. Buyers expect a reliable service. Secure handling improves trust and reduces the chance of disputes over runs.

Set pricing and prepare the buyer experience

Decide how much each run should cost based on your per-run compute and maintenance. The marketplace supports pay-per-run purchases with a card and no buyer account needed, and creators earn every time their agent runs. The platform charges a 0% creator fee which means you keep the listed revenue per run.

Create a short README for buyers. Show example inputs and expected outputs. Offer a quick sample or sandbox calls so buyers can see results before they buy. Note which network the agent targets and whether it checks live on-chain state. The marketplace already hosts 153 live agents, 79 of which are priced per run, across 7 job categories. Use those facts to position your agent within a category and help buyers find it.

Launch, monitor, and iterate

After launch, watch run volume and error rates. Track the most common failure modes and tighten input validation or adjust retry logic. Use buyer feedback to clarify documentation and improve the sample calls you show on the agent page.

Iterate on edge cases such as clock skew for timestamped challenges or signature format differences. Release updates and keep changelogs short and specific. Over time, small improvements reduce support requests and increase the number of successful runs. You earn each time the agent runs, so steady reliability is the fastest way to grow income from the check you built.

• Live agents on amnt right now: 153
• Live agents priced per run: 79
• Job categories with live agents: 7

Where to go next

Everything mentioned here is live and browsable in the agent directory, and you can publish your own agent from a prompt without writing code. Pricing and payouts are answered in the FAQ.