About siGit CLI
siGit CLI is a terminal interface for managing sigit.si repositories, pull requests, issues, code search, and Cloud Sessions. It can also expose these operations to AI agents over stdio, with controls for limiting available tools or making them read-only.
Key features
- 01Manage repositories, PRs, and issues
- 02Search code and manage Cloud Sessions
- 03Machine-readable JSON output
- 04Select MCP tools by toolset
- 05Read-only MCP mode
Use cases
- 01Review repositories and PRs in a terminal
- 02Let an AI agent triage issues
- 03Restrict an agent to read-only access
MCP support
Run `si mcp` to expose the same commands as MCP tools over stdio. Toolsets can be selected or made read-only, and authentication reuses the token stored by `si auth login`.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project READMEsigit-si-cli
si is the command line interface for sigit.si — sign in,
manage repositories, review pull requests, triage issues, search code, and
drive Cloud Sessions, all from the terminal. It's the gh of sigit.si.
Install
cargo install --path crates/cli
This installs a binary named si.
Usage
si auth login # sign in with your sigit.si account
si repo list # your repositories
si repo create my-project --private
# Inside a repo checkout, si infers OWNER/NAME from the sigit.si git remote —
# --repo is only needed when you're not standing in one.
si pr list
si pr view 42
si pr create --title "Fix the thing" --base main
si issue list --state open
si issue create --title "Bug: ..." --body "Steps to reproduce..."
si code search "TODO" --ref main
si code view README.md
si session new --title "Refactor auth"
si billing show
si browse # open the current repo on sigit.si
si api repos # raw escape hatch for any endpoint
Pass --json to any read command for machine-readable output.
As an MCP server
si mcp serves these same commands to an AI agent as
MCP tools over stdio:
{
"mcpServers": {
"sigit": { "command": "si", "args": ["mcp"] }
}
}
There is nothing to authenticate — the server reuses the token si auth login
stored. Point your editor at the directory of a checkout and repository tools
default to the repo you're standing in, so the agent can say "list the open
pull requests" without naming one; create_pull_request likewise defaults its
head to the checked-out branch.
Trim the tool list when an agent doesn't need all of it:
si mcp --read-only # drop every tool that writes
si mcp --toolsets repo,issue,pr,code # or SIGIT_TOOLSETS=repo,issue
Toolsets are account, repo, issue, pr, code, hook, session, and
billing. sigit.si also hosts a remote MCP server at /api/v1/mcp for clients
that would rather connect over HTTP than spawn a binary.
Environments
si --environment dev repo list # a local sigit.si server (localhost:3000)
SIGIT_HOST=staging.example.com si repo list
Credentials are stored per-environment in ~/.sigit/token (or
~/.sigit-dev/token). SIGIT_TOKEN overrides the stored token, which is how
CI authenticates without an interactive login.
Workspace layout
crates/sigit-si-api— a standalone, typed Rust client for the sigit.si JSON API. No CLI dependencies (clap, dialoguer, …); usable from any Rust project that wants to talk to sigit.si, including the desktop app.crates/cli— thesibinary: command parsing, terminal rendering, git remote resolution, and credential storage, built on top ofsigit-si-api.
Issues, pull requests, and code search have no REST surface on sigit.si yet —
they're served over the same MCP (Model Context Protocol) JSON-RPC endpoint
the AI agent uses. sigit-si-api speaks that transport internally; it's not
visible at the call site.
MCP Registry listings
This repo publishes two entries to the official MCP Registry, one per way of reaching the same tools, so registry-aware clients can add either in one click:
| Listing | File | What it is |
|---|---|---|
si.sigit/cli | server.json | This CLI: a cargo package listing that runs si mcp over stdio. |
si.sigit/sigit | server-sigit.json | The hosted server at sigit.si/api/v1/mcp, a remote Streamable-HTTP listing. The endpoint sigit-si-api talks to, and the official server siGit Code bakes in. |
The CLI holds server.json because it's what this repo ships, and that's the
filename mcp-publisher defaults to. Sibling listings are named after their
own leaf, so the file says which entry it publishes.
Both go out through the release-mcp-registry.yml workflow, and both prove
namespace ownership with a DNS TXT record on sigit.si rather than GitHub
OIDC, so one credential covers the pair. A package listing has a second hurdle:
the registry fetches the crate from crates.io and looks for the
mcp-name: si.sigit/cli marker in its README, which is why that marker sits in
this file. Crate versions are immutable, so a release that ships without the
marker can never be listed, and fixing it costs a new version. The internal
setup and release runbook live with the server (private sigit-si repo).
Development
make build # cargo build --workspace
make test # cargo test --workspace
make lint # cargo clippy --workspace --all-targets -- -D warnings
make fmt # cargo fmt --all
make check # fmt + lint + test
Disclaimer
All em dashes are written by Seto Elkahfi.
License
Apache-2.0
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.