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Reported issues for Argent

Pod holds 9 of 9 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded entirely — a maintainer's release checklist is not a warning to a prospective user.

Back to Argent.

Most discussed

gesture-rotate, flow-read-prerequisite, flow-execute use top-level oneOf/anyOf in inputSchema, which the Anthropic Messages API rejects

Environment

Summary

3 of the 73 tools argent's MCP server exposes have oneOf/anyOf at the top level of inputSchema (used to express "either param A or param B" conditional requirements). We hit this in opencode, where the An

Read the thread · 2026-08-11 · closed · external user · 1 comment

stop-all-simulator-servers: scope session-end cleanup to the calling session

Problem

stop-all-simulator-servers takes no parameters and stops every simulator-server, native-devtools, and Chromium CDP transport on the machine. The rules file (rules/argent.md) and the MCP server instructions both tell every session to call it at session end.

On a machine running several concurrent agent sessions against the one shared tool-server, one session ending severs the transports of all the others mid-work. We observed this repeatedly with 5+ concurrent Claude Code session

Read the thread · 2026-08-08 · open · external user · 0 comments

screenshot: "no image to export" with >1 booted simulator (regression in 0.12.x; works in 0.11.0)

Summary

screenshot fails with no image to export when more than one simulator is booted, even when a specific --udid is passed. This is a regression: it works in 0.11.0 and breaks in 0.12.1.

Environment

Repro

  1. Boot two iOS simulators:
    xcrun simctl boot <UDID_A>
xcrun simctl boot <UDID_B>
  2. Start the tool-server and capture a screensho

Read the thread · 2026-06-22 · closed · external user · 3 comments

tool-server.cjs is orphaned (reparented to launchd) when the argent mcp process that spawned it exits

Environment: @swmansion/argent 0.11.0, Node v24.12.0 (nvm), macOS 26.5, Apple Silicon

Bug

When the argent mcp process that first spawns tool-server.cjs exits (e.g. its MCP client is a short-lived headless run that finishes), the tool-server does not exit. It re-parents to launchd (ppid 1) and runs indefinitely. There appears to be no parent-death detection (stdin EOF / ppid watchdog) and no idle timeout.

Repro (verified)

  1. Ensure no tool-server.cjs start process is run

Read the thread · 2026-06-11 · open · external user · 2 comments

argent init writes absolute /Users//… paths into committed MCP configs

After running argent init in a project, every generated MCP config has a literal home path baked into the ARGENT_MCP_LOG env var, e.g.:

"env": {
  "ARGENT_MCP_LOG": "/Users/<username>/.argent/mcp-calls.log"
}

This shows up in all six IDE-specific files that argent init writes:

.mcp.json (Claude Code) .cursor/mcp.json .vscode/mcp.json .zed/settings.json .gemini/settings.json .codex/config.toml

These files are meant to be committed and shared with the team, so every collaborator who pu

Read the thread · 2026-05-20 · closed · external user · 4 comments

[0.7.1] cpu at 100%, endless amount of simctl launched

Hi guys,

using 0.7.1, I left my mac alone for a while and when i came back i saw about ~500 simctl instances eating up the cpu.

I asked codex what is spawning it and responded: 

The process names point pretty strongly at the culprit already:
  argent mcp is running, and the simctl spawn ...
  DYLD_INSERT_LIBRARIES ... @swmansion/argent/... commands are
  Argent’s iOS simulator instrumentation. I’m doing one parent-
  process check now to make that airtight

No matter if I force qui

Read the thread · 2026-05-17 · closed · external user · 7 comments

argent init puts mcp config for Claude in a nonexistant "server" key

Basically what the title says. it puts this in the .mcp.json file:

 "servers": {
    "argent": {
      "type": "stdio",
      "command": "argent",
      "args": [
        "mcp"
      ],
...

but the key you need is "mcpServers.json" as far as I know. I looked through the Claude Code docs and didn't see any mention of a "servers" key.

Read the thread · 2026-05-15 · closed · external user · 2 comments

MCP Server Errors on Start

Likely not an issue, just hoping for some help. I had argent installed (globally) and working at one point, but when I went to use it today the MCP server errors every time I try to start with:

2026-05-01 17:25:32.746 [info] [V2] Handling CreateClient action
2026-05-01 17:25:32.746 [info] [V2 FSM] connection:connect_start: conn=idle,auth=unknown -> conn=connecting,auth=unknown
2026-05-01 17:25:32.778 [error] No version is set for command argent
Consider adding one of the following versions i

[Read the thread](https://github.com/software-mansion/argent/issues/179) · 2026-05-01 · closed · external user · 2 comments

## Most recent

### iOS ax-service segfaults on every attach on Intel (x86_64) Macs — and the "MUST call boot-device with force=true" hint then drives coding agents into an infinite simulator reboot loop

## Environment

- argent 0.20.0, global install (`npm i -g @swmansion/argent`)
- macOS 26.5.2 (25F84) on Intel — Core i9-9980HK, x86_64
- Xcode 26.5 (17F42), iOS 26.5 simulator runtime (23F77)
- Node v24.13.1
- Target: iPhone 17 Pro simulator (default device set)
- Telemetry is disabled on this machine, so none of this will have reached you that way

## Summary

Two linked problems, the second turning the first into a severe failure mode for agent-driven use:

1. **`bin/darwin/ax-service` crashe

[Read the thread](https://github.com/software-mansion/argent/issues/800) · 2026-08-16 · open · external user · 0 comments

The remaining reports are on [the project's issue tracker](https://github.com/software-mansion/argent/issues).