muxplex-client
Typed sync/async HTTP client for the muxplex tmux-session-dashboard API.
Ships as its own PyPI distribution (import name muxplex_client) so a
consumer that only needs to make ~12 HTTP calls -- a Stream Deck sidecar, an
Amplifier tool module -- never has to install the server's dependencies
(fastapi, uvicorn, python-pam, ...) or its muxplex server console script.
See ../muxplex-client-design.md for the full
design rationale.
Install
pip install muxplex-client
Runtime dependency: httpx>=0.27.0. Nothing else -- no muxplex server
dependency, no console script installed.
Usage
Synchronous:
from muxplex_client import MuxplexClient
with MuxplexClient("https://your-server:8088", "federation-key") as client:
for session in client.sessions():
if session.bell.needs_attention:
print(f"{session.name} needs attention")
Asynchronous (Amplifier tool modules, or any asyncio caller):
from muxplex_client import AsyncMuxplexClient
async with AsyncMuxplexClient("https://your-server:8088", "federation-key") as client:
result = await client.run_shell_command("my-session", "pytest -q")
print(result.exit_code, result.elapsed)
A localhost caller needs no credential -- federation_key=None is the
default and is fine when running on the same host as the server.
What's in here vs. what isn't
See muxplex-client-design.md §3 for the full included/excluded endpoint
table and rationale. Notably excluded: PATCH /api/settings (highest
blast-radius operation in the API; a v2 concern requiring CAS + 409 retry +
backstop discrimination), all federation endpoints (server-to-server
protocol, no client consumer), and /api/internal/setup-hooks (internal,
self-healing as of server v0.18.0).
Version alignment
muxplex_client.__version__ is cut in lockstep with the muxplex server
version -- one vX.Y.Z tag publishes both wheels. This is provenance
("cut against server X"), not a runtime requirement: the client declares no
dependency on the muxplex package and enforces no version at runtime.
MIN_SERVER_VERSION backs an opt-in check_server() helper the caller may
call; it is never invoked automatically.
The load-bearing correctness mechanism is
muxplex/tests/test_client_contract.py, living in the server's own test
suite: it drives this client over httpx.ASGITransport against the real
FastAPI app and asserts every field the client parses actually exists on the
real response, that mirrored constants (KNOWN_KEYS, MAX_CAPTURE_LINES,
DEFAULT_CAPTURE_LINES) equal their server originals, and that
Bell.needs_attention agrees with the server's own predicate across a truth
table.
The shell-command sentinel
run_shell_command() (and the lower-level muxplex_client.sentinel module)
implements the completion-detection convention from AGENT_GUIDE.md §6.2/§6.4:
wrap a command with ; rc=$?; ... ; echo "MUXPLEX_DONE_<token>_EXIT_$rc" and
poll the pane for the marker.
This assumes the target pane is an idle POSIX shell prompt. It is not a
general HTTP contract -- it fails (types a garbage line into whatever is
actually running, then hangs until timeout) against vim, a REPL, less, a
TUI, an ssh session, or a non-POSIX shell without a matching exit_expr.
The one correctness rule worth calling out explicitly: matching must be
digit-anchored (MUXPLEX_DONE_<token>_EXIT_(\d+)), never a bare-token
substring check. tmux echoes the literal, unexpanded ...EXIT_$? into the
pane the instant you send the line -- before the shell has even run it -- so
a bare-token match reports "done" with a bogus exit code immediately. See
muxplex_client/sentinel.py's docstring and tests/test_sentinel.py's
digit-anchor regression test.
Development
uv sync --extra dev # from this directory, or from the repo root via the
# [tool.uv.workspace] declaration
uv run pytest
tests/ is pure -- no network, no server import, and passes with muxplex
not installed at all.
1 maintainer
Metadata
1 maintainer
Release files for muxplex-client 0.59.0
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