It is possible to interact with geth via JSONRPC over HTTP.
Some examples are shown here to familiarize you with the POST request and show how to make POST requests using curl.
A Complete Guide to Understanding This Blockchain Concept
You can read more about POST here https://en.wikipedia.org/wiki/POST_(HTTP) Before using the JSONRPC interface over HTTP, the geth client should be started up with appropriate switches, as shown here: –rpcapi web3 This switch will enable the web3 interface over HTTP.
The Linux command, curl, can be used for the purpose of communicating over HTTP, as shown here in the example.
Finally, localhost:8545 is used where the HTTP endpoint from geth is opened.
POST requests It is possible to interact with geth via JSONRPC over HTTP. For this purpose, the curl tool can be used. Curl is Some examples are shown here to familiarize you with the POST request and show how to make POST requests using curl. POST is request method supported by HTTP. You can read more about POST here https://en.wikipedia.org/wiki/POST_(HTTP) Before using the JSONRPC interface over HTTP, the geth client should be started up with appropriate switches, as shown here: –rpcapi web3 This switch will enable the web3 interface over HTTP. The Linux command, curl, can be used for the purpose of communicating over HTTP, as shown here in the example. Retrieve the list of accounts: For example, in order to retrieve the list of accounts using the personal_listAccounts method, the following command can be used: $ curl –request POST –data ‘{“jsonrpc”:”2.0″,”method”:”personal_listAccounts”,”params”: [],”id”:4}’ localhost:8545 -H “Content-Type: application/json” This will return the output, a JSON object with the list of accounts: {“jsonrpc”:”2.0″,”id”:4,”result”:[“0xcf61d213faa9acadbf0d110e1397caf20445c58f”,”0x3681e23a71ae8add5b88f01cbda153f1d805dde8″]} In the preceding curl command, –request is used to specify the request command, POST is the request, and –data is used specify the parameters and values. Finally, localhost:8545 is used where the HTTP endpoint from geth is opened.
Why This Matters for Blockchain Technology
Understanding POST requests is not just an academic exercise — it has real-world implications for how blockchain systems are designed, deployed, and secured. Whether you are a developer building decentralized applications, a business leader evaluating blockchain adoption, or a curious learner exploring the technology, this knowledge provides a critical foundation.
Key Points to Remember
- POST requests It is possible to interact with geth via JSONRPC over HTTP.
- Some examples are shown here to familiarize you with the POST request and show how to make POST requests using curl.
- You can read more about POST here https://en.wikipedia.org/wiki/POST_(HTTP) Before using the JSONRPC interface over HTTP, the geth client should be started up with appropriate switches, as shown here: –rpcapi web3 This switch will enable the web3 interface over HTTP.
- The Linux command, curl, can be used for the purpose of communicating over HTTP, as shown here in the example.
Conclusion
POST requests represents one of the many innovative layers that make blockchain technology so powerful and transformative. As distributed systems continue to evolve, a solid understanding of these core concepts becomes increasingly valuable — not just for developers, but for anyone building, investing in, or working alongside blockchain-powered systems.
Whether you are just starting your blockchain journey or deepening existing expertise, mastering these fundamentals gives you the tools to think clearly about decentralized systems and make smarter decisions in this rapidly evolving space.