Arduino MCP Server
NPM · ARDUINO-MCP-SERVER
Arduino MCP server for CLI setup, board detection, compile/upload, serial monitoring, and pin refs.
Available components
Last scanned (23 hours ago)
Scores higher than 82% of npm servers
Category IoT and Hardware
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 30 of 92 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency44
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 241 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability78
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1535 tokens (~69/item across 22 items; 21 tools + 1 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage94
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 79% of tool parameters carry a description.Partial
- Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 21 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 22 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 3 Nov 26 +1
- Stability: 0.97 → pass security
- 1 Nov 26 −1
- Stability: pass → 0.93 functional
- 26 Oct 26 0
- Stability: 0.97 → pass security
- 25 Oct 26 0
- Stability: pass → 0.97 functional
- 19 Oct 26 0
- Stability: 0.97 → pass security
- 18 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 16 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 14 Oct 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 80 to 83. That category is still filling its 30-day observation window: 24 days of observed history at the previous scan, 25 at this one. The score rises as the window fills, whether or not the server changes.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 4 Nov 2026 · Analysed npm/arduino-mcp-server@0.2.8
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 92 packages
| Packages resolved | 92 |
|---|---|
| Stale | 30 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
arduino_cli_doctor Arduino CLI Doctor ~27
Check whether arduino-cli is available and return OS-specific installation instructions if missing.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
compile_sketch Compile Sketch ~131
Compile an Arduino sketch with a specific board FQBN.
| Name | Type | Req | Description |
|---|---|---|---|
| autoInstallCore | boolean | – | If true (default), auto-install missing board core before compile. |
| buildPath | string | – | Optional build output directory. |
| clean | boolean | – | If true, clean build cache before compile. |
| exportBinaries | boolean | – | If true, export binaries into sketch folder. |
| fqbn | string | yes | Board FQBN, e.g. arduino:avr:uno. |
| sketchPath | string | yes | Path to sketch folder or .ino file. |
| warnings | string | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
detect_hardware Detect Hardware ~80
Detect connected Arduino-compatible hardware, infer board/FQBN candidates, and generate next compile/upload commands.
| Name | Type | Req | Description |
|---|---|---|---|
| includeBoardDetails | boolean | – | If true, query `arduino-cli board details` for selected FQBN candidates. |
| port | string | – | Optional exact port filter, e.g. COM6 or /dev/ttyACM0. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
ensure_core_installed Ensure Core Installed ~92
Ensure the Arduino core required by a board FQBN is installed. Can auto-install via `arduino-cli core install`.
| Name | Type | Req | Description |
|---|---|---|---|
| autoInstall | boolean | – | If true (default), install missing core automatically. |
| coreId | string | – | Core ID, e.g. arduino:avr. |
| fqbn | string | – | Board FQBN, e.g. arduino:avr:uno. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
get_board_details Get Board Details ~46
Get detailed board metadata from arduino-cli for a specific FQBN.
| Name | Type | Req | Description |
|---|---|---|---|
| fqbn | string | yes | Board FQBN, e.g. arduino:avr:uno. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
install_arduino_cli Install Arduino CLI ~83
Attempt to install arduino-cli for the current OS using available package managers, then verify and configure CLI path.
| Name | Type | Req | Description |
|---|---|---|---|
| method | string | – | Install method. Default `auto` tries OS-relevant methods in order. |
| setCliPathInProcess | boolean | – | If true (default), set ARDUINO_CLI_PATH in this MCP process after install. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
list_board_reference List Board Reference ~19
List local board reference entries with pin/spec metadata.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
list_connected_boards List Connected Boards ~22
List connected boards and serial ports detected by arduino-cli.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
list_serial_ports List Serial Ports ~29
List serial ports and any detected board metadata using arduino-cli. Works on Windows/macOS/Linux.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
list_supported_boards List Supported Boards ~40
List supported/installable boards from the local arduino-cli index.
| Name | Type | Req | Description |
|---|---|---|---|
| search | string | – | Optional case-insensitive filter for name/FQBN. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
read_serial_snapshot Read Serial Snapshot ~73
Capture serial output for a bounded duration from a given port.
| Name | Type | Req | Description |
|---|---|---|---|
| baudRate | integer | – | Baud rate. Default: 9600. |
| durationMs | integer | – | Capture duration in ms. |
| port | string | yes | Serial port path, e.g. COM6 or /dev/ttyACM0. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
safety_preflight Safety Preflight ~84
Run electrical preflight checks (voltage/current/pin risks) before upload or serial write operations.
| Name | Type | Req | Description |
|---|---|---|---|
| board | string | – | Board name/id (preferred when known). |
| fqbn | string | – | Board FQBN when known. |
| port | string | – | Optional port for automatic board inference. |
| power | object | – | – |
| wiring | array | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
search_board_reference Search Board Reference ~33
Search local board reference by board name, alias, id, or FQBN.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_close_session Serial Close Session ~27
Close a serial session and release its port lock.
| Name | Type | Req | Description |
|---|---|---|---|
| sessionId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_expect Serial Expect ~64
Wait for a string pattern in a serial session buffer with timeout.
| Name | Type | Req | Description |
|---|---|---|---|
| caseSensitive | boolean | – | – |
| fromOffset | integer | – | Optional explicit cursor offset. |
| pattern | string | yes | – |
| sessionId | string | yes | – |
| timeoutMs | integer | – | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_list_sessions Serial List Sessions ~19
List active serial sessions and current port lock state.
Input schema present but exposes no named parameters.
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_open_session Serial Open Session ~88
Open a stateful serial monitor session with port lock ownership.
| Name | Type | Req | Description |
|---|---|---|---|
| baudRate | integer | – | Baud rate. Default: 9600. |
| maxBufferBytes | integer | – | Max in-memory receive buffer. |
| port | string | yes | Serial port path, e.g. COM6 or /dev/ttyACM0. |
| ttlMs | integer | – | Session lease TTL in ms. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_read Serial Read ~68
Read buffered bytes from an open serial session.
| Name | Type | Req | Description |
|---|---|---|---|
| encoding | string | – | Output encoding. Default: utf8. |
| fromOffset | integer | – | Read offset cursor. Defaults to current buffer start. |
| maxBytes | integer | – | Maximum bytes to return. |
| sessionId | string | yes | – |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
serial_write Serial Write ~103
Write bytes to an open serial session. Safety preflight is enforced unless explicitly skipped.
| Name | Type | Req | Description |
|---|---|---|---|
| data | string | yes | Payload to send. |
| encoding | string | – | Payload encoding. Default: utf8. |
| lineEnding | string | – | Optional line ending append. |
| safetyContext | object | – | – |
| sessionId | string | yes | – |
| unsafeSkipPreflight | boolean | – | If true, bypasses safety_preflight checks. Use only with explicit user acceptance. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
upload_and_wait_ready Upload And Wait Ready ~231
Upload a sketch and wait for a serial readiness pattern, handling post-upload reset/re-enumeration windows.
| Name | Type | Req | Description |
|---|---|---|---|
| autoInstallCore | boolean | – | If true (default), auto-install missing board core when fqbn is provided. |
| fqbn | string | – | Optional board FQBN when auto-detect is insufficient. |
| port | string | yes | Serial port path, e.g. COM6 or /dev/ttyACM0. |
| readyBaudRate | integer | – | Baud rate for readiness check. Default 115200. |
| readyCaseSensitive | boolean | – | If true, readiness matching is case-sensitive. |
| readyPattern | string | – | Optional serial text pattern to wait for after upload. |
| readyTimeoutMs | integer | – | How long to wait for readyPattern. |
| safetyContext | object | – | – |
| sketchPath | string | yes | Path to sketch folder or .ino file. |
| unsafeSkipPreflight | boolean | – | If true, bypasses safety_preflight checks. Use only when user explicitly accepts risk. |
| verify | boolean | – | Verify uploaded binary when supported. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
upload_sketch Upload Sketch ~157
Upload a compiled sketch to a connected board/port.
| Name | Type | Req | Description |
|---|---|---|---|
| autoInstallCore | boolean | – | If true (default), auto-install missing board core when fqbn is provided. |
| fqbn | string | – | Optional board FQBN when auto-detect is insufficient. |
| port | string | yes | Serial port path, e.g. COM6 or /dev/ttyACM0. |
| safetyContext | object | – | Optional electrical context for preflight checks. |
| sketchPath | string | yes | Path to sketch folder or .ino file. |
| unsafeSkipPreflight | boolean | – | If true, bypasses safety_preflight checks. Use only when user explicitly accepts risk. |
| verify | boolean | – | Verify uploaded binary when supported. |
| Name | Type | Req | Description |
|---|---|---|---|
| command | string | – | – |
| data | – | – | – |
| error | string | – | – |
| errorCode | string | – | – |
| nextActions | array | – | – |
| note | string | – | – |
| ok | boolean | yes | – |
| raw | object | – | – |
| rawTail | object | – | – |
| reasonCodes | array | – | – |
| retryable | boolean | – | – |
| stage | string | – | – |
| status | string | – | – |
No examples provided.
How do I install the Arduino MCP Server server?
Arduino MCP Server runs locally as an npm package, launched with npx -y arduino-mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · arduino-mcp-server
claude mcp add hardware-mcp-arduino-mcp-server -- npx -y arduino-mcp-server
What is the Arduino MCP Server server?
Arduino MCP Server is listed in the public MCP registry as io.github.hardware-mcp/arduino-mcp-server. Arduino MCP server for CLI setup, board detection, compile/upload, serial monitoring, and pin refs. This page covers its npm package (arduino-mcp-server).
Is the Arduino MCP Server server safe to use?
Arduino MCP Server scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 4 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the Arduino MCP Server server expose?
Arduino MCP Server exposes 21 tools: list_connected_boards, arduino_cli_doctor, install_arduino_cli, list_supported_boards, ensure_core_installed, and 16 more. Their descriptions and schemas cost roughly 1,516 tokens of context every time the server is loaded.
Is the Arduino MCP Server server still maintained?
Arduino MCP Server is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the Arduino MCP Server server under?
Arduino MCP Server declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.