Effective Date: 03/18/2026 Last Updated: 03/18/2026
Overview
BlockchainQuery is a free Claude Desktop Extension provided by the Pocket Network Foundation (“PNF,” “we,” “us”). This policy describes what data BlockchainQuery handles and how.
The short version: BlockchainQuery does not collect any personal data. It runs locally on your machine and makes read-only queries to public blockchain endpoints on your behalf.
What BlockchainQuery Does
BlockchainQuery gives Claude Desktop the ability to look up public blockchain data — account balances, transactions, blocks, and network information — across 60+ blockchain networks. All queries are read-only. The extension cannot send transactions, modify on-chain state, or access private keys.
Data We Collect
None. BlockchainQuery does not collect, store, or transmit any personal information, usage analytics, telemetry, crash reports, or behavioral data.
The extension does not require accounts, API keys, authentication, or registration of any kind.
Network Requests
BlockchainQuery makes two types of network requests, both initiated from your local machine:
1. Chain Registry
At startup, the extension fetches the list of supported blockchains from a publicly hosted JSON file on GitHub:
https://raw.githubusercontent.com/pokt-network/public-rpc/main/supported-chains.json
This is a standard HTTPS GET request. No user-identifying information is included beyond what your operating system and network configuration transmit by default (e.g., your IP address in the request headers).
2. Blockchain Queries
When you ask Claude a blockchain-related question, the extension sends an RPC request to Pocket Network’s public gateway:
The gateway routes your query to the appropriate blockchain network and returns the result. These requests contain only the blockchain query itself (e.g., an address to look up, a transaction hash to fetch). No personal information, Claude conversation content, or device identifiers are included in these requests.
Pocket Network operates this gateway as public infrastructure. Standard server access logs may be maintained for operational and security purposes (e.g., rate limiting, abuse prevention). These logs may include IP addresses and request metadata. Pocket Network does not correlate these logs with individual users, sell access to this data, or use it for advertising or profiling.
For Pocket Network’s general privacy practices, see: https://pocket.network/privacy-policy
Data Stored on Your Device
BlockchainQuery caches the chain registry data locally for performance. No query history, results, personal data, or credentials are stored by the extension. Any query results you see are held in Claude Desktop’s conversation context, which is governed by Anthropic’s privacy policy, not ours.
Third-Party Services
BlockchainQuery interacts with two external services:
| Service | Purpose | Data Sent |
|---|---|---|
| GitHub (raw.githubusercontent.com) | Fetch chain registry at startup | Standard HTTPS request |
| Pocket Network Gateway (api.pocket.network) | Route blockchain queries | Blockchain RPC request content only |
We do not share any data with advertisers, analytics providers, or any other third parties.
Children’s Privacy
BlockchainQuery does not knowingly collect any information from anyone, including children under 13.
Changes to This Policy
If we make material changes to this policy, we will update the “Last Updated” date above and note changes in the BlockchainQuery release notes on GitHub.
Contact
For privacy questions about BlockchainQuery: