Sippion

io.github.Sitten-TokyoPublished by GitHub account Sitten-Tokyov0.1.0Updated Oct 24, 2026

Local read-only repository context retrieval for AI coding agents.

VerifiedSTDIODesktop onlyKnowledge & MemoryDeveloper Tools

Overview

AI-generated overview

A local, read-only MCP server whose single tool returns small, relevant repository excerpts so AI coding agents use fewer tokens.

What you can do
Retrieve focused repository context: the single repo_context tool takes a query and returns a few bounded source excerpts instead of broad file reads, using lexical, structural and semantic retrieval that stays local and read-only.
When to use it
Worth adding when an AI coding agent tends to open large parts of a repository and burn through API tokens or subscription usage allowances, and you want it to read only the files it actually needs.
Requirements
Runs as a local process on the user's machine (desktop only), installed from platform-specific MCPB packages or the project's bootstrap script; then run sippion setup and restart the AI client. No authentication, environment variables or headers are declared, and no network access is needed while serving context.
Before you install
Read-only: it does not modify the repository, run repository code, build scripts or shell commands, and keeps no persistent index. Repository text is treated as untrusted and high-confidence secrets are redacted before model output, but excerpts still go to the model. The documented install steps pipe a remote script into a shell, so review them first.

Installation

In SourceWeft

  1. Open Sippion in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Sippion

[Release] [CI] [MCP Registry] [License] [Rust]

English | 日本語

Use less AI context. Make API tokens — and subscription usage allowances — last longer.

Sippion is a local, read-only MCP server that helps AI coding agents consume fewer tokens. Instead of letting an agent open large parts of a repository, Sippion's single tool, repo_context, returns a small set of relevant, bounded source excerpts first.

This reduces unnecessary context per task. It can lower usage for API-based workflows, but that is not the only benefit: Sippion can also help subscription-based AI coding plans last longer by reducing how much context the agent needs to consume.

How it works

text
AI coding agent    ↓ ask for focused repository contextSippion repo_context    ↓ return a few relevant excerptsAI reads only the files it actually needs

Example:

text
repo_context {"q":"authentication token validation"}

Sippion uses bounded lexical, structural, and semantic retrieval while staying local and read-only.

Install

macOS / Linux

sh
curl -fsSL --proto '=https' --proto-redir '=https' --tlsv1.2 https://raw.githubusercontent.com/Sitten-Tokyo/Sippion/75d6b27e83b86bec00297cd5b5c05bb014e16904/scripts/bootstrap.sh | sh

Windows PowerShell

powershell
irm https://raw.githubusercontent.com/Sitten-Tokyo/Sippion/75d6b27e83b86bec00297cd5b5c05bb014e16904/scripts/bootstrap.ps1 | iex

Then restart your AI client. sippion setup registers Sippion for Codex, Claude Code, Antigravity, and OpenCode.

Useful commands:

sh
sippion setupsippion doctorsippion uninstallsippion mcp --root-auto

Why Sippion

  • Fewer tokens: gives the agent focused repository context instead of broad file reads.
  • Useful beyond API billing: can help subscription usage allowances last longer too.
  • Local and private: no network access while serving repository context.
  • Read-only: never modifies the repository or executes repository code.
  • No persistent index: retrieval state stays in RAM.
  • Small surface area: one MCP tool, repo_context.

Sippion is a repository-context tool, not a compiler or language server. Structural parsing currently covers Rust, Python, JavaScript/TypeScript, Go, Java, C#, C, and C++.

Safety

Sippion does not run repository code, build scripts, compilers, LSP servers, or shell commands during retrieval. Repository text is treated as untrusted data, and high-confidence secrets are redacted before model output.

See Security and trust boundary for details.

Documentation

Credits

The compact efficiency behavior is inspired by Ponytail and i-have-adhd. License notes are in Third-party notices.

Source: README.md at commit 2d33808

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v0.1.0LatestSep 16, 2026

Score

40% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

    Declare a license in the repository or the registry entry.