mcp-esp32
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| list_portsA | List serial ports, including the simulator, with a best-guess chip identification. |
| board_infoB | Chip family, flash size, MAC address, and MicroPython version (if any) for |
| flash_firmwareA | Write Reports progress at least every 5% via MCP progress notifications and
can be cancelled mid-flash. |
| repl_execA | Run |
| fs_lsB | List a directory on the board's filesystem. |
| fs_getA | Read a file from the board. Content comes back base64-encoded; refuses files over max_bytes. |
| fs_putA | Write a base64-encoded payload to a file on the board, chunked over several raw-REPL exchanges. |
| tail_serialA | Capture raw serial output for up to 30 seconds without going through the REPL protocol. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 8 tools
Each tool has a clear, distinct purpose: port discovery, board info, flashing, REPL execution, filesystem operations, and serial monitoring. There is no overlap between them, and even related tools like fs_ls/fs_get/fs_put are differentiated by operation type.
Naming patterns are mixed: some are verb_noun (list_ports, flash_firmware, tail_serial), some are prefix-based (fs_ls, fs_get, fs_put), and repl_exec inverts the usual order. While readable, the lack of a single consistent convention makes the API slightly less predictable.
With exactly 8 tools, the server is well-scoped for its purpose of managing ESP32 boards. Each tool covers a distinct aspect of the workflow (discovery, flashing, code execution, filesystem, serial) without bloat or trivial tools.
The toolset covers the core lifecycle: identify port, get board info, flash firmware, execute code, and manage files. The only notable gap is lack of a delete/rename filesystem operation, but this is a minor omission that doesn't compromise the primary workflows.