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Serial Debug

skill-adancurusul-serial-mcp-server-serial-debug · by Adancurusul

CLI-first serial port debugging and macro automation with serial-mcp-server for Codex and Claude Code. Use when working with UART or USB-serial devices, listing serial ports, probing STM32/Arduino/ESP32 boards, writing or reading serial data, running JSON serial macros, controlling RTS/DTR, or using serial-mcp-server through MCP tools.

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Install

$ agentstack add skill-adancurusul-serial-mcp-server-serial-debug

✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • ✓ Prompt-injection patterns
  • ✓ Secret / credential exfiltration
  • ✓ Dangerous shell & filesystem operations
  • ✓ Untrusted network calls
  • ✓ Known-malicious package signatures

What it can access

  • ✓ Network access No
  • ✓ Filesystem access No
  • ✓ Shell / process execution No
  • ✓ Environment & secrets No
  • ✓ Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

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About

Serial Debug

Operating Rule

Use the serial-mcp-server CLI first unless the user explicitly asks for MCP or an MCP client is already configured. Keep stdout data separate from diagnostics, cite exact commands, and do not claim hardware success unless a real command touched the device and returned evidence.

Workflow

  1. Confirm the binary is available:
serial-mcp-server --help
  1. List available ports before choosing a device:
serial-mcp-server list-ports --json
  1. For a device smoke test, probe the port first, then write/read only when the probe succeeds:
serial-mcp-server probe --port  --baud 115200 --json
serial-mcp-server write --port  --baud 115200 --data H --read --timeout-ms 1000 --json
  1. If RTS or DTR is involved, state the requested line levels and use the control-line command:
serial-mcp-server set-control-lines --port  --rts high --dtr low --json
  1. For repeatable serial procedures, prefer JSON macro packs and validate or plan them before real hardware execution:
serial-mcp-server macro validate --file  --json
serial-mcp-server macro plan --file  --macro  --json
serial-mcp-server macro run --file  --macro  --simulate-read  --json
serial-mcp-server macro run --file  --macro  --port  --baud 115200 --json

Macro packs are restricted JSON DSL files. v0.3 supports send, delay, expect contains, expect equals, and assemblies that call macros. It does not support shell commands, language execution, loops, variables, Quick commands, or RTS/DTR macro steps.

References

  • Read references/cli.md for exact command behavior, output expectations, and automation rules.
  • Read references/mcp.md when the user asks for MCP setup or MCP tool usage.
  • Read references/hardware-safety.md before changing baud, wiring, voltage levels, RTS, DTR, or reset/boot lines.
  • Read references/troubleshooting.md when a command fails, times out, returns no ports, or cannot open the device.

Reporting

Report the command, exit status, and the relevant JSON or error excerpt. If no hardware is connected, say that only discovery/help paths were verified and mark device round-trip validation as manual.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.

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