# Adafruit IO MCP by usefulapi (remote · adafruit-io.usefulapi.io)

Read Adafruit IO feeds, data, groups and dashboards; publish a data point or create a feed.

- Trust score: 66/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `adafruit-io.usefulapi.io`: 66/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io.md), [page](https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io)

## Channel facts

- Endpoint: `https://adafruit-io.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `required`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-18.

- **Endpoint Security**: 78/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation is enforced on tool calls, advertised via RFC 9728 protected-resource metadata. Discovery is public, which costs nothing: no tool can be invoked without a token.
  - HTTPS enforcement could not be verified: the plaintext port redirected somewhere other than https, so enforcement is unproven.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
  - The authorisation server offers only Dynamic Client Registration (RFC 7591), which MCP 2026-07-28 deprecated in favour of Client ID Metadata Documents.
- **Transport & Reachability**: 0/100
  - Transport check failed: declared streamable-http, but the endpoint redirected instead of responding directly.
- **Schema Quality & AI Usability**: 85/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 1783 tokens (~104/item across 17 items; 17 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 20/100
  - Stability observed for 6 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - All 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation.
  - An AI judge read all 18 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the Adafruit IO MCP by usefulapi server?

Adafruit IO MCP by usefulapi is a hosted endpoint at https://adafruit-io.usefulapi.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http io-usefulapi-adafruit-io 'https://adafruit-io.usefulapi.io/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "io-usefulapi-adafruit-io": {
      "url": "https://adafruit-io.usefulapi.io/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "io-usefulapi-adafruit-io": {
      "type": "http",
      "url": "https://adafruit-io.usefulapi.io/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.io-usefulapi-adafruit-io]
url = "https://adafruit-io.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-adafruit-io": {
      "type": "remote",
      "url": "https://adafruit-io.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-adafruit-io --url 'https://adafruit-io.usefulapi.io/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-adafruit-io:
    url: "https://adafruit-io.usefulapi.io/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "io-usefulapi-adafruit-io": {
      "Transport": "http",
      "Url": "https://adafruit-io.usefulapi.io/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add io-usefulapi-adafruit-io -t streamable-http -u 'https://adafruit-io.usefulapi.io/mcp'
```

### Other

```json
{
  "mcpServers": {
    "io-usefulapi-adafruit-io": {
      "type": "http",
      "url": "https://adafruit-io.usefulapi.io/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-18 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-14 (score 64, +2)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional] The server now declares the “prompts” capability
- [functional] First check of Schema quality: 100
- [functional] New prompt “getting_started”
- [functional] Server version: 1.0.0 → 1.1.0

### 2026-10-13 (score 62, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-12 (score 61)

First indexed and scored.

## MCP tools (17)

### `adafruitio_get_user` (~50 tokens)

Get user

The Adafruit IO account this key belongs to: id, name, username, time zone, created/updated times, plus the data rate limit when reported. GET /api/v2/user.

### `adafruitio_get_throttle` (~61 tokens)

Get data rate limit

The account's data rate limit (data-record modifications per minute: 30 on free accounts, 60 on Plus) and the current active data rate. Check it before publishing many points. GET /api/v2/{username}/throttle.

### `adafruitio_list_feeds` (~43 tokens)

List feeds

List all of the account's feeds with key, name, description, unit, visibility, enabled flag, last value and last update. GET /feeds.

### `adafruitio_get_feed` (~77 tokens)

Get feed

One feed by key: name, description, unit, visibility, last value, status settings and the groups it belongs to. GET /feeds/{feed_key}.

Input parameters:

- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).

### `adafruitio_get_feed_details` (~74 tokens)

Get feed details

A feed with its details block: first and last data point and the number of stored points. GET /feeds/{feed_key}/details.

Input parameters:

- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).

### `adafruitio_list_feed_data` (~252 tokens)

List feed data

Data points of a feed (max 1000 per call). Newest first, except that with start_time the API returns the oldest page after that time. Filter by time range and limit; to read further back call again with the reply's next_page_args (the same filters plus `before`). GET /feeds/{feed_key}/data.

Input parameters:

- `before` (string): Pagination token: next_before from the previous reply (keep the same other arguments).
- `end_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.
- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).
- `include` (string): Comma-separated fields to return: value, lat, lon, ele, id, created_at.
- `limit` (integer): Maximum records to return, 1-1000 (default 100).
- `start_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.

### `adafruitio_get_last_data` (~99 tokens)

Get latest data point

The most recent data point of a feed (value, location, created_at). GET /feeds/{feed_key}/data/last.

Input parameters:

- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).
- `include` (string): Comma-separated fields to return: value, lat, lon, ele, id, created_at.

### `adafruitio_get_data_point` (~89 tokens)

Get data point

One stored data point of a feed by its id. GET /feeds/{feed_key}/data/{id}.

Input parameters:

- `data_id` (string, required): Data point id (the `id` field of a data point).
- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).

### `adafruitio_get_feed_chart` (~215 tokens)

Get feed chart data

Aggregated chart data for a feed: values sliced by `resolution` minutes over the last `hours` (or a start/end range), using avg, sum, min, max, val or val_count. Good for trends without downloading every point. GET /feeds/{feed_key}/data/chart.

Input parameters:

- `end_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.
- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).
- `field` (string): Aggregation (default avg).
- `hours` (integer): Hours of history (ignored when start_time and end_time are given).
- `resolution`: Slice size in minutes.
- `start_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.

### `adafruitio_list_groups` (~30 tokens)

List groups

List the account's groups (named sets of feeds) with their feeds. GET /groups.

### `adafruitio_get_group` (~36 tokens)

Get group

One group by key with its feeds. GET /groups/{group_key}.

Input parameters:

- `group_key` (string, required): Group key.

### `adafruitio_list_dashboards` (~31 tokens)

List dashboards

List the account's dashboards with key, name, description and visibility. GET /dashboards.

### `adafruitio_get_dashboard` (~34 tokens)

Get dashboard

One dashboard by key. GET /dashboards/{dashboard_key}.

Input parameters:

- `dashboard_key` (string, required): Dashboard key.

### `adafruitio_list_blocks` (~63 tokens)

List dashboard blocks

The blocks (widgets: gauges, toggles, charts, sliders...) of a dashboard with their feeds, position and properties. Integration secrets in properties are removed. GET /dashboards/{dashboard_key}/blocks.

Input parameters:

- `dashboard_key` (string, required): Dashboard key.

### `adafruitio_list_activities` (~116 tokens)

List activity log

The account's activity log (feed/data/dashboard changes), optionally within a time range. GET /activities.

Input parameters:

- `end_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.
- `limit` (integer): Maximum entries, 1-1000.
- `start_time` (string): ISO 8601 date or date-time, e.g. 2026-10-01T00:00:00Z.

### `adafruitio_publish_data_point` (~201 tokens)

Publish data point

WRITE: publish one data point (a value) to a feed. This can drive REAL DEVICES: anything subscribed to the feed (relays, motors, lights, heaters, locks, dashboard toggles) will receive and may act on the value, and it cannot be undone from here. Only publish a value the user has asked for. Counts against the account's data rate limit (30 per minute on free accounts, 60 on Plus). POST /feeds/{feed_key}/data.

Input parameters:

- `ele` (number): Elevation of the reading in meters.
- `feed_key` (string, required): Feed key (the URL-safe key shown in Adafruit IO, for example 'temperature'; 'group-key.feed-key' also works).
- `lat` (number): Latitude of the reading.
- `lon` (number): Longitude of the reading.
- `value` (required): The value to publish (text or number, up to 1000 characters).

### `adafruitio_create_feed` (~98 tokens)

Create feed

WRITE: create a new, empty feed (private by default), optionally inside an existing group. Adds a feed only; it does not change or delete anything existing, and fails if the name is taken. POST /feeds.

Input parameters:

- `description` (string): Optional description.
- `group_key` (string): Optional existing group key to create the feed in.
- `name` (string, required): Feed name (the key is derived from it).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io#diagnostics

## Score history

- 2026-10-18: 66
- 2026-10-17: 65
- 2026-10-16: 65
- 2026-10-15: 64
- 2026-10-14: 64
- 2026-10-13: 62
- 2026-10-12: 61

## Common questions

### What is the Adafruit IO MCP by usefulapi server?

Adafruit IO MCP by usefulapi is listed in the public MCP registry as io.usefulapi/adafruit-io. Read Adafruit IO feeds, data, groups and dashboards; publish a data point or create a feed. This page covers its hosted endpoint (https://adafruit-io.usefulapi.io/mcp).

### Is the Adafruit IO MCP by usefulapi server safe to use?

Adafruit IO MCP by usefulapi scores 66 out of 100 on VerifyMCP. 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 Adafruit IO MCP by usefulapi server expose?

Adafruit IO MCP by usefulapi exposes 17 tools: adafruitio_get_user, adafruitio_get_throttle, adafruitio_list_feeds, adafruitio_get_feed, adafruitio_get_feed_details, and 12 more. Their descriptions and schemas cost roughly 1,569 tokens of context every time the server is loaded.

### Does the Adafruit IO MCP by usefulapi server require authentication?

Yes. Adafruit IO MCP by usefulapi asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

### Is the Adafruit IO MCP by usefulapi server still maintained?

Adafruit IO MCP by usefulapi is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://adafruit-io.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Website: https://usefulapi.io/adafruit-io/
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-adafruit-io/adafruit-io