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Subscan (BYOK)

Read Subscan on-chain data of Substrate networks: accounts, token balances, transfers, blocks, extrinsics, events and validators with your own paid-plan API key

Unify Dynamics LLC

Tools11read-only
Sign-inBYOKbring your own key
Key keptNeverused for one call only
PriceFreeoptional Pro limits
ProviderSubscanunofficial, not affiliated
Works withMCP · RESTany agent

Try asking

Real questions, and the tools your agent calls to answer them.

What is the SS58 prefix of the Polkadot network on Subscan?
Tools called
get_network_metadata
What is the balance of account 5GrwvaEF5zXb26Fz9rcQpDWS57CtERHpNehXCPcNoHGKutQY on Polkadot?
Tools called
get_account
Which tokens does this Polkadot account hold?
Tools called
list_account_tokens
What are the latest transfers for this Polkadot account?
Tools called
list_transfers
What are the latest blocks on Polkadot?
Tools called
list_blocks
Show Polkadot block 1000000
Tools called
get_block

About

Subscan (BYOK) lets an AI assistant read your own Subscan data through the Subscan API with a key you supply (Subscan direct API key (paid plan; free access now goes through the PubFi gateway)). Read-only: 11 tools (get_network_metadata, get_account, list_account_tokens, list_transfers, list_blocks, get_block, list_extrinsics, get_extrinsic, list_events, list_validators, list_democracy_referendums). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to *.api.subscan.io. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Subscan. Subscan and its logos are trademarks of their owners and are used only to say which service the connector works with.

Sources: Live from the Subscan API (*.api.subscan.io) with a BYOK key; documentation: https://support.subscan.io/doc-361776. Endpoints checked against that documentation on 2026-10-16.

Privacy

The publisher, Unify Dynamics LLC, states that tool inputs are processed in memory and not retained.

Data not collectedNo account, no profile, no stored prompts or results.

What it can do

11 tools, grouped by job. Every one is read-only or compute-only.

OpenAPI
Read your data11 tools
  • Get network metadataShow the current network's metadata: node name, SS58 address type, current runtime and other chain settings.
  • Get accountLook up one account by Substrate address, EVM address or SS58 index: balance, locks, reserved and bonded amounts, nonce, roles and extrinsic count.
  • List account tokensList the token holdings of one account (native token, assets, ERC-20 and ERC-721 where available) with balance, price, symbol, decimals and category.
  • List transfersList transfers on the network filtered by account, direction, token, amount, success or block range, with amounts, sender, receiver, block and…
  • List blocksList recent blocks with number, hash, timestamp, extrinsic and event counts, finalized flag and block author.
  • Get blockGet one block by number, hash or nearest timestamp: hash, parent hash, roots, extrinsic and event counts, finalized flag, validator and spec version.
  • List extrinsicsList extrinsics (transactions) filtered by signer, module, call, success or block range, with hash, index, fee, tip and block time.
  • Get extrinsicGet one extrinsic by index (block-position) or hash: call, signer, success, fee, nonce, events count, error and transfer summary.
  • List eventsList on-chain events filtered by pallet, event, extrinsic or block range with event ID, extrinsic index, phase and timestamp.
  • List validatorsList staking validators (networks with the staking pallet) with status, bonded totals, nominator count, commission value and reward points.
  • List democracy referendumsList democracy referendums (networks with the democracy pallet) with index, title, status, call and vote threshold.

Information

PublisherUnify Dynamics LLC
CategoryMoney & business
LanguagesEnglish
Built forWorldwide
CompatibilityAny MCP client · any agent · REST
Version0.1.0
MCP endpointhttps://byok-subscan.connectorbay.com/mcp
REST APIopenapi.json
SupportGet help · Status
CountryWorldwide
FunctionOther
LayerDeep connectors

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Get Subscan (BYOK)

Free · BYOK · Read-only

BYOK: bring your own keyThis connector uses your own Subscan Subscan direct API key (paid plan; free access now goes through the PubFi gateway). Create one at https://pro.subscan.io/api_service, with the fewest permissions it needs (read-only if the provider offers it). Your assistant sends it in the X-Upstream-Key header with every request. It is used for that one call only: never stored, logged or cached, and only ever sent to Subscan. Revoke it at the provider whenever you like. Unofficial connector: not affiliated with Subscan.