Install Jentic One Beta

Connect the Ankr Advanced API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Ankr Advanced API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fankr.com%2Fankr" | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fankr.com%2Fankr" | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Ankr Advanced API.

Look up an account's token and native-coin balances across multiple blockchains in a single call

List all NFTs owned by a wallet with metadata and collection info

Retrieve NFT transfer history and current holders for a given collection

Fetch token holder distributions and supply metrics for ERC-20 contracts

Pull on-chain event logs and internal transactions filtered by block range

GET STARTED

Start building with Ankr Advanced API

Explore with Jentic One

View OpenAPI Document

Use Cases

Patterns agents use Ankr Advanced API for, with concrete tasks.

★ Multichain Wallet Dashboard

Build a portfolio dashboard that shows native and token balances, NFT holdings, and recent activity for a user's wallets across Ethereum, BSC, Polygon, and other Ankr-supported chains. A single Ankr Advanced API key covers all networks via the multichain URL, so the agent issues one ankr_getAccountBalance call instead of spinning up an RPC connection per chain. Setup is short because each operation returns the same normalised JSON structure regardless of source network.

Call ankr_getAccountBalance via POST /?ankr_getAccountBalance with the user's wallet and a list of chains, then format the returned token balances into a dashboard view

NFT Collection Analytics

Monitor an NFT collection by combining ankr_getNFTHolders, ankr_getNFTsByOwner, and ankr_getNftTransfers to surface ownership concentration, recent flips, and per-wallet holdings. Agents use this for floor-watch alerts, whale tracking, or due-diligence workflows where the underlying chain (Ethereum, Polygon, BSC) should not change the calling code. Ankr's normalised metadata also reduces the post-processing required compared to raw chain RPCs.

Call ankr_getNFTHolders with the collection contract address, then ankr_getNftTransfers for the last 24 hours and surface the top 10 buying wallets

On-Chain Activity Monitoring

Watch a smart contract's events by polling ankr_getLogs with a topic filter and block range, then use ankr_getInternalTransactionsByBlockNumber to expand into internal-call detail when an event triggers further on-chain activity. This avoids running a self-hosted indexer for low-to-medium volume monitoring use cases such as alerting on governance votes, liquidations, or DAO treasury movements.

Call ankr_getLogs with the contract address and the Transfer topic for the last 1000 blocks, then drill into ankr_getInternalTransactionsByParentHash for any transaction over a threshold value

AI Agent Wallet Inspector via Jentic

An AI agent answering 'what's in this wallet?' style questions uses Ankr Advanced API through Jentic to fetch balances, NFTs, and recent transfers without managing the multichain key directly. Jentic's intent search routes the agent to the correct ankr_* method with its parameter schema, and the API key is loaded from the vault at execution time so it never enters the agent's tool context.

Search Jentic for 'get NFTs owned by a wallet', load ankr_getNFTsByOwner, and execute with the user-supplied address and chain list to return a normalised NFT list

Key Endpoints

18 endpoints — jentic publishes the only available openapi specification for ankr advanced api, keeping it validated and agent-ready.

METHOD

PATH

DESCRIPTION

POST

/?ankr_getAccountBalance

Retrieve native and token balances for a wallet across chains

POST

/?ankr_getNFTsByOwner

List all NFTs owned by a given wallet

POST

/?ankr_getNFTHolders

List holders of a given NFT collection

POST

/?ankr_getNftTransfers

Retrieve NFT transfer history for a wallet or collection

POST

/?ankr_getLogs

Fetch on-chain event logs filtered by topic and block range

POST

/?ankr_getBlockchainStats

Return per-chain block height, block time, and gas stats

POST

/?ankr_getNFTMetadata

Retrieve metadata for a single NFT token

POST

/?ankr_getInternalTransactionsByParentHash

List internal transactions for a given parent transaction

POST

/?ankr_getAccountBalance

Retrieve native and token balances for a wallet across chains

POST

/?ankr_getNFTsByOwner

List all NFTs owned by a given wallet

POST

/?ankr_getNFTHolders

List holders of a given NFT collection

POST

/?ankr_getNftTransfers

Retrieve NFT transfer history for a wallet or collection

POST

/?ankr_getLogs

Fetch on-chain event logs filtered by topic and block range

POST

/?ankr_getBlockchainStats

Return per-chain block height, block time, and gas stats

POST

/?ankr_getNFTMetadata

Retrieve metadata for a single NFT token

Why Jentic?

What agents get from Jentic-routed access to this vendor.

Setup

Wiring the Ankr Advanced API by hand means embedding your API key in the multichain RPC URL and hand-building JSON-RPC method envelopes yourself. Through Jentic you install once, import Ankr Advanced from the API Directory, store the API key once, and your agent calls it.

Permission scoping

Ankr selects behaviour by an ankr_ method name rather than resource ids in the path, so scope the agent to the operations it needs, such as ankr_getAccountBalance and ankr_getNFTsByOwner. Because every method here is a read-only query, you scope the agent to the reads it needs.

Credential isolation

Your Ankr API key is stored once, encrypted, by your own Jentic One instance, which builds the key-embedded multichain URL at execution time. The URL with the key never enters the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'get NFTs owned by a wallet' or 'get an account balance', and Jentic returns the matching ankr_ method with its input schema so the agent calls the right method without memorising names from the reference docs.

FAQs

Specific to using Ankr Advanced API through Jentic.

Why is there no official OpenAPI spec for Ankr Advanced API?

Ankr does not publish an OpenAPI specification - the Advanced API is documented as JSON-RPC methods. Jentic generates and maintains this spec so that AI agents and developers can call Ankr via structured tooling. It is validated against the live API and kept up to date. Get started with Jentic One, the self-hosted execution layer.

What authentication does the Ankr Advanced API use?

Ankr uses an API key embedded directly in the multichain RPC URL path (https://rpc.ankr.com/multichain/{API_KEY}). There is no separate Authorization header. Through Jentic the API key is stored in the encrypted vault and the URL is reconstructed at execution time so the key never enters the agent's prompt context.

Can I query NFTs across multiple chains with the Ankr Advanced API?

Yes. ankr_getNFTsByOwner, ankr_getNFTHolders, and ankr_getNftTransfers accept a blockchain list parameter, so a single call can span Ethereum, Polygon, BSC, and other supported networks and return normalised metadata.

What are the rate limits for the Ankr Advanced API?

The OpenAPI spec does not declare explicit rate limits. Ankr enforces per-plan throughput on the live service, so check your Ankr dashboard for the exact RPS for your tier and back off on 429 responses.

How do I look up a wallet's NFTs with the Ankr Advanced API through Jentic?

Run pip install jentic, then search Jentic for 'get NFTs owned by a wallet'. Jentic returns ankr_getNFTsByOwner with its parameter schema. Execute the call with the wallet address and the list of chains you want covered.

Does the Ankr Advanced API support sending transactions?

No. The Advanced API surface in this spec is read-only - balances, transfers, logs, and NFT data. Transaction broadcasting is handled by Ankr's standard JSON-RPC node endpoints, not by the ankr_* method namespace covered here.

Can I limit what my agent is allowed to do with the Ankr Advanced API?

Yes. Because you run Jentic One yourself and your own rules decide which operations and credentials the agent may use, you scope the agent to only the ankr_ methods it needs, such as ankr_getAccountBalance or ankr_getNFTsByOwner. Ankr selects behaviour by the method name rather than by resource ids in the path, and every method in this API is a read-only query, so you grant the agent just the specific reads it requires. Any ankr_ method you do not allow, such as ankr_getLogs or ankr_getNFTHolders, stays off limits to the agent.

Ankr Advanced API

Name: Ankr Advanced API
Brand: Ankr Advanced API
Availability: InStock

Agent-ready OpenAPI document · curated by JenticDeveloper ToolsMonitoring ObservabilityapiKey18 EndpointsREST

Know of an official OpenAPI document? Contribute it →

For Agents

Query account balances, NFT holdings, transactions, and on-chain logs across 30+ blockchains through Ankr's multichain JSON-RPC. Returns normalised data so agents can answer wallet questions without per-chain RPC code.

Use for: Get the token balance of a wallet across Ethereum, BSC, and Polygon, List all NFTs owned by this Ethereum address, Retrieve NFT transfer history for a specific collection, Find all holders of an ERC-20 token contract

Not supported: Does not broadcast transactions, sign messages, or run smart contract calls - use for read-only multichain balance, NFT, token, and log queries only.

Jentic publishes the only available OpenAPI specification for Ankr Advanced API, keeping it validated and agent-ready. Ankr Advanced API is a multichain JSON-RPC service that exposes account balances, blockchain stats, transaction history, NFT ownership and metadata, token holders, and on-chain logs across more than thirty supported networks behind a single endpoint. Each operation is invoked via the ankr_* method namespace (for example ankr_getAccountBalance, ankr_getNFTsByOwner) and returns normalised JSON across chains so agents do not have to learn each network's native RPC. Authentication is via an API key embedded in the multichain URL path.

Jentic One on Github View OpenAPI Document

Connect the Ankr Advanced API to your agent

Capabilities

Start building with Ankr Advanced API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs

Ankr Advanced API