# JSON-RPC Projects at AI Tinkerers

> Canonical HTML: https://aitinkerers.org/technologies/json-rpc
> Markdown URL: https://aitinkerers.org/technologies/json-rpc.md
> Technology record last updated: 2026-04-13T14:18:05Z
> Generated: 2026-09-23T04:45:31Z

JSON-RPC is a stateless, lightweight Remote Procedure Call (RPC) protocol, using JSON exclusively to encode method invocation requests and responses.

JSON-RPC (version 2.0 is standard) defines a simple, transport-agnostic protocol for remote service interaction: it is not bound to HTTP, operating over sockets, WebSockets, or other streams. A client sends a Request object—containing the protocol version (`"jsonrpc": "2.0"`), the remote function name (`"method": "getBalance"`), parameters (`"params": ["0x123..."],` an array or object), and a unique `id`—to the server. The server executes the method and returns a Response object with the matching `id` and either a `result` or an `error` object. This structure facilitates efficient batch requests and one-way notifications (requests without an `id`), making it a preferred choice for high-throughput systems, notably in the blockchain ecosystem (e.g., Ethereum's API).

- Official technology site: https://www.jsonrpc.org/specification
- Public AI Tinkerers demos and talks: 2
- Result page: 1 of 1

## Recent Public Talks and Demos

### [CodeDB: Building a Code Intelligence Server That Cuts Agent Token Usage](https://singapore.aitinkerers.org/talks/rsvp_YyFDIYV6hPs)

CodeDB is a code intelligence server for AI agents that indexes a codebase once and serves structured answers through MCP, HTTP, and CLI instead of forcing models to repeatedly scan raw files. In this demo, I show how CodeDB uses structural indexing, trigram search, inverted word lookups, dependency graphs, and snapshots to help agents find only the most relevant code context with much lower latency and dramatically fewer tokens.

- Event context: AI Tinkerers Singapore: The Agentic Future & Dev/Eng Workflows — 2026-04-21 — Singapore
- Public talk page: https://singapore.aitinkerers.org/talks/rsvp_YyFDIYV6hPs

### [A2A Deep dive](https://dublin.aitinkerers.org/talks/rsvp_PUfCKEuGrfQ)

Agent To Agent (A2A) is a newly proposed protocol by google that aims at standardizing how Agents communicate with other vendors, this is particularly useful in the case of 3rd party AI Agents. In this demo, I'll walk through some of the key design principles of A2A, by walking through code and highlighting how the principles are/can be implemented. We'll step through what a client and server for A2A should look like and how communication between the two is facilitated by a task manager.

- Event context: AI Tinkerers - Dublin Event (April) — 2025-04-24 — Dublin
- Public talk page: https://dublin.aitinkerers.org/talks/rsvp_PUfCKEuGrfQ

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