Moonriver Block Explorer API MCP. Analyze on-chain data without leaving your chat.
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Moonriver Block Explorer API MCP Server lets your AI agent query all deep on-chain data points for the Moonriver network.
You can check account balances, list recent blocks, track specific token movements (ERC-20/721), and analyze transaction history directly from your chat or IDE.
It acts as a dedicated blockchain analyst without you needing to leave your current window.
What your AI agents can do
Get account info
Gets the current balance, metadata, and general info for a specific Moonriver account address.
Get block
Retrieves full details about one single block using its height or ID.
Get extrinsic
Gets the specific data points of a single transaction record (extrinsic).
Retrieves balance, metadata, and transfer history for a specific Moonriver wallet address.
Gets the complete details of any specified block height on the network.
Retrieves granular details about a specific transaction (extrinsic) by its hash or index.
Pulls high-level status and descriptive information for the entire Moonriver network.
Returns a list of recent block hashes, allowing you to identify blocks by height or time.
Lists all available ERC-20 and ERC-721 token contracts on the Moonriver chain.
Queries a list of recent transaction records (extrinsics) associated with an address or time range.
Gathers the complete, chronological history of funds moved into or out of an account.
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Supported MCP Clients
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Moonriver Block Explorer API: 8 Tools for Web3 Analysis
Analyze block details, account balances, token lists, and transaction histories on the Moonriver network using these eight specialized tools.
019e5d37get account info
Gets the current balance, metadata, and general info for a specific Moonriver account address.
019e5d37get block
Retrieves full details about one single block using its height or ID.
019e5d37get extrinsic
Gets the specific data points of a single transaction record (extrinsic).
019e5d37get metadata
Pulls high-level descriptive information about the Moonriver network status.
019e5d37list blocks
Returns a list of recent blocks on the chain, including their height and timestamp.
019e5d37list evm tokens
Fetches a complete list of all ERC-20 and ERC-721 token contracts available on Moonriver.
019e5d37list extrinsics
Returns a summarized list of recent transactions (extrinsics) for an address or time period.
019e5d37list transfers
Gathers a chronological list of all fund movements associated with a given account.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
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Make Your AI Do More
Start with Moonriver (Moonriver Block Explorer API), then connect any of our 4,700+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 4,700+ others, all in one place
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What you can do with this MCP connector
This API lets your AI agent query deep on-chain data points across the entire Moonriver network. You can check account balances, track token movements, and analyze transaction history directly from your chat or IDE without leaving your current window.
When you use get_metadata, your agent pulls high-level status information about the whole Moonriver network. This gives you a quick snapshot of what's going on across the chain. You can also get a list of all available ERC-20 and ERC-721 token contracts using list_evm_tokens. That function returns a complete roster, so you know exactly which assets are running on Moonriver.
For tracking wallets, you've got two key tools. First, run get_account_info to nail down a specific account address. This gives you the current balance, general metadata, and all the core details for that wallet. You can then use list_transfers to get a chronological list of every fund movement associated with that same account; it's your full transfer history.
To understand what's happening at the block level, start by running list_blocks. This returns a list of recent blocks on the chain, giving you both the height and the timestamp for each one. If you need the whole scoop on just one block—say, Block 12345—you use get_block, which retrieves all the complete details for that specific ID or height.
When it comes to transactions, you've got granular options. You can run list_extrinsics to get a summarized list of recent transaction records, either for a specified address or within a given time period. If you want every single data point on one particular transfer—the full details of an extrinsic—you use get_extrinsic by providing its hash or index.
These tools let you see the raw mechanics of how funds move across Moonriver.
Basically, your agent handles all this complex querying for you: it collects a list of recent blocks via list_blocks, gets the full details of any single block using get_block, and monitors every fund movement through list_transfers while also keeping track of balances with get_account_info. You'll never have to jump between dashboards or manually format these queries again.
It just works.
How Moonriver Block Explorer API MCP Works
- 1 Subscribe to this server and enter your Moonriver API Key. This connects the necessary credentials to your AI client.
- 2 Ask your agent a direct question, like 'What was the last block height?' or 'List all tokens for address X.'
- 3 The agent runs the required tool (e.g.,
list_blocks), processes the raw data, and gives you a clean answer in natural language.
The bottom line is: your AI client translates complex blockchain queries into simple conversations.
Who Is Moonriver Block Explorer API MCP For?
Anyone working with on-chain data needs this. Think Web3 developers who can't afford to switch tabs while coding, or Data Analysts drowning in CSV exports. It’s for the crypto researcher tired of manual block explorer archaeology.
Needs to quickly verify transaction statuses and account balances without leaving their IDE or local development environment.
Extracts large sets of block data, token transfer history, and network metadata for reports and research modeling.
Monitors wallet activity patterns and overall network health across multiple addresses in a natural conversation flow.
What Changes When You Connect
- Saves time by eliminating manual cross-referencing. You can check a full transfer history using
list_transfersand then immediately pull the related block details withget_block, all in one conversation. - Get token visibility instantly. Use
list_evm_tokensto see every ERC-20 asset available, which is much faster than browsing multiple contract pages manually. - Deep transaction analysis is easy. Instead of just seeing a list of transactions via
list_extrinsics, you can drill down and get the full details usingget_extrinsicfor forensic clarity. - Understand network scope with one call. The
get_metadatatool gives immediate context on the Moonriver network status, so you don't have to check multiple official websites. - Efficiently track history. You can use
list_blocksto find a specific period and then runlist_extrinsicsagainst that block’s range to narrow down activity.
Real-World Use Cases
Investigating a recent transfer spike
A researcher notices unusual activity. They ask their agent to use list_transfers for the last 48 hours on Wallet X. The agent returns the list, and the researcher follows up by asking the agent to use get_account_info for that same address to check its current balance.
Verifying a smart contract deployment
A developer needs to confirm when a specific contract was deployed. They ask their agent to run list_blocks and filter by time, then use get_block on the resulting block height to verify the transaction details in the coinbase list.
Auditing asset liquidity
A data analyst needs a full picture of what assets are available. They first run list_evm_tokens to get all contract addresses, and then they use that list to cross-reference against the transfer history using list_extrinsics.
Troubleshooting transaction failures
A user's transaction failed. They ask their agent to run get_extrinsic on the failing hash. The tool returns detailed error codes, letting them know if it was a gas issue or an invalid smart contract call.
The Tradeoffs
Over-relying on external block explorer tabs
You manually open the Moonriver site, search by address, look at transactions, then click into a specific block to find metadata. It's slow, and you lose context.
→
Just talk to your agent. Ask it to 'Get me the transfer history for this account AND list the tokens they moved.' The agent uses list_transfers and cross-references with list_evm_tokens in one go.
Forgetting API rate limits
Running dozens of simple calls back-to-back, hitting the endpoint for every single block or account detail separately, which will fail due to throttling.
→
Structure your query. First, use list_blocks to define a time window, then ask the agent to process that range in bulk using get_extrinsic, letting the tool manage the necessary batching.
Asking for generic 'blockchain data'
Saying simply, 'Show me the data.' The AI doesn't know if you want tokens, blocks, or addresses, so it fails or gives useless filler.
→
Be specific. Use tool names: 'Use get_account_info to check balance, then use list_transfers for history.' Specific tools yield accurate results.
When It Fits, When It Doesn't
Use this server if your job requires querying multiple, distinct types of on-chain data (e.g., tokens AND transfers AND block metadata). You need the specific granularity provided by tools like get_extrinsic or list_evm_tokens.
Don't use it if you just want a simple visual chart of price movement over time—that requires an external charting service. Also, don’t use it if you only need to know the current gas fee (use a dedicated gas tracker). This server is for raw, structured data retrieval: what happened, who owned it, and when. If your query can be solved with one simple lookup on Google Maps, this isn't the right tool.
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Moonriver. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
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Works with Claude, ChatGPT, Cursor, and more
The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.
This server provides 8 capabilities that interface natively with Claude, ChatGPT, Cursor, and any MCP client. No middleware. No custom integration required.
Available Capabilities
Reading block explorers requires endless tab switching.
Today, if you need to verify a transaction's impact, you open the Moonriver explorer. You copy the hash, paste it into one tab for details, then open another tab to check the surrounding blocks, and maybe a third just to list all tokens involved. You spend more time clicking than analyzing.
With this MCP server, your agent handles the entire flow. Just ask: 'What happened with transaction X?' The AI client automatically calls `get_extrinsic` and cross-references it against `list_evm_tokens`, delivering one clean summary directly to you.
The Moonriver Block Explorer API MCP Server makes querying data simple.
Previously, fetching an account's full history meant manually running multiple queries: first listing blocks via `list_blocks`, then finding all the associated transactions using `list_extrinsics`, and finally aggregating those details with `get_account_info`. It was a multi-step coding chore.
Now, you just ask your agent to 'Check the full activity for this address.' The server orchestrates the calls—running `list_transfers` and pulling current balance data via `get_account_info`—and gives you a unified report. That's how it should work.
Common Questions About Moonriver Block Explorer API MCP
What is the difference between using `list_extrinsics` and `list_transfers`? +
List_extrinsics gives a summary list of raw transactions by hash or time. Use it when you need to see what was sent. List_transfers, on the other hand, provides a cleaner history focused specifically on fund movement and account balances.
How do I get information about all available tokens using `list_evm_tokens`? +
list_evm_tokens returns a list of contracts (ERC-20, ERC-721). This is your starting point for any token audit. You then use the contract addresses returned to check specific transfers with get_account_info.
What information does `get_block` provide? +
get_block gives you all the raw data associated with a single block height, including its timestamp, collator, and every transaction that was included in it. It’s the deepest dive into a specific moment on the chain.
Can I use `get_metadata` to check network health? +
Yes, get_metadata pulls high-level information about the Moonriver network itself—things like its current version or status. It gives you context that isn't tied to a specific account or block.
Should I use `list_blocks` first when tracking transactions? +
It depends on your goal. If you want the latest activity, start with list_blocks. This gives you the current range of blocks, which helps narrow down where to look for recent transactions using list_extrinsics.
What credentials are required to run `get_account_info`? +
You must provide your Moonriver API key in the request headers. This ensures secure access, preventing unauthorized queries and keeping network data private.
If I try to run `get_block` with an invalid height, what error should I expect? +
The server returns a specific API error code (like 404). Your AI client must check this status code before attempting to parse any block data.
When using `list_transfers`, how can I optimize fetching history across many addresses? +
You should paginate your requests by utilizing start and end parameters. This prevents hitting rate limits and keeps the massive transfer dataset manageable for processing.
Can I check the balance and metadata of a specific Moonriver address? +
Yes! Use the get_account_info tool by providing the wallet address. Your agent will return the current balance and associated account metadata.
How can I track token transfers for a specific user? +
Use the list_transfers tool with the user's address. It will retrieve the history of token transfers (ERC-20/ERC-721) for that specific account.
Is it possible to look up a transaction using its hash? +
Absolutely. Use the get_extrinsic tool and provide the transaction hash to get full details about that specific operation on the network.
Use it with your favorite AI tools
Connect this server to Cursor, Claude, VS Code, and more.
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