[Feature] Add new standard module: mcp (Model Context Protocol integration)

[Avey777]

Describe the feature

Propose adding a new standard library module mcp to support Model Context Protocol (MCP) — a lightweight protocol for connecting V applications with AI models, tools, or external services.

This module could provide:

Basic MCP client implementation (connect, send, receive)

Type-safe message structures (Request, Response, Error, etc.)

Utilities for integrating with V’s concurrency model (spawn, chan, etc.)

https://github.com/ThinkInAIXYZ/go-mcp

Use Case

import mcp

fn main() {
    mut client := mcp.connect('http://localhost:8000') or { panic(err) }
    response := client.send(.get, '/status', {}) or { panic(err) }
    println(response.body)
}

Proposed Solution

Provide official, standardized way for V programs to integrate with MCP-compatible tools and AI systems.

Encourage interoperability and automation use cases (editor tools, LSP assistants, etc.).

Other Information

No response

Acknowledgements

• [ ] I may be able to implement this feature request
• [ ] This feature might incur a breaking change

Version used

V 0.4.12 af62364

Environment details (OS name and version, etc.)

V full version	V 0.4.12 c560e7290059aaff6d43005c5bc5d0ed9dab4d9f.af62364
OS	linux, Deepin 25
Processor	4 cpus, 64bit, little endian, Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz
Memory	0.3GB/11.57GB
V executable	/home/Jengro/.vmr/versions/v_versions/v_latest/v
V last modified time	2025-11-08 10:57:46
V home dir	OK, value: /home/Jengro/.vmr/versions/v_versions/v_latest
VMODULES	OK, value: /home/Jengro/.vmodules
VTMP	OK, value: /tmp/v_1000
Current working dir	OK, value: /home/Jengro
Git version	git version 2.50.1
V git status	weekly.2025.45-28-gaf62364a
.git/config present	true
cc version	cc (Deepin 12.3.0-17deepin15) 12.3.0
gcc version	gcc (Deepin 12.3.0-17deepin15) 12.3.0
clang version	Deepin clang version 17.0.6 (5deepin6)
tcc version	tcc version 0.9.28rc 2025-02-13 HEAD@f8bd136d (x86_64 Linux)
tcc git status	thirdparty-linux-amd64 696c1d84
emcc version	N/A
glibc version	ldd (Debian GLIBC 2.38-6deepin17) 2.38

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[Delta456]

Good idea! This can be a separate library like vsl rather than being in vlib IMHO.

[jorgeluismireles]

Would be great if this code reuse the components from the vlib http, sse and convert https://github.com/nedpals/v-jsonrpc to work with x.json2 whether integrating the sub-components in vlib or vsl.

[Avey777]

Perhaps we can create an MCP repository to provide a place for those who want to contribute code

[Avey777]

https://github.com/vlang/v/issues/25706