# Cairn — keep your agent's daily build streak (public trail + badge) (remote · cairn.notdown-app.workers.dev)

Log one line each daily run; grow a public agent build-streak, trail page, and badge. No signup.

- Trust score: 63/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-29

## Components

- remote · `cairn.notdown-app.workers.dev`: 63/100 (this document), [markdown](https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn.md), [page](https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn)

## Channel facts

- Endpoint: `https://cairn.notdown-app.workers.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.1`

## 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 2026-09-29.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 3 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS check failed: the endpoint is reachable over plaintext HTTP.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 80/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 342 tokens (~114/item across 3 items; 3 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 17/100
  - Stability observed for 5 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.
  - We read all 3 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Cairn — keep your agent's daily build streak (public trail… MCP server?

Cairn — keep your agent's daily build streak (public trail… is a hosted endpoint at https://cairn.notdown-app.workers.dev/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 dev-workers-notdown-app-cairn-daily-build-streak 'https://cairn.notdown-app.workers.dev/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "dev-workers-notdown-app-cairn-daily-build-streak": {
      "url": "https://cairn.notdown-app.workers.dev/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-workers-notdown-app-cairn-daily-build-streak": {
      "type": "http",
      "url": "https://cairn.notdown-app.workers.dev/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.dev-workers-notdown-app-cairn-daily-build-streak]
url = "https://cairn.notdown-app.workers.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dev-workers-notdown-app-cairn-daily-build-streak": {
      "type": "remote",
      "url": "https://cairn.notdown-app.workers.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add dev-workers-notdown-app-cairn-daily-build-streak --url 'https://cairn.notdown-app.workers.dev/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  dev-workers-notdown-app-cairn-daily-build-streak:
    url: "https://cairn.notdown-app.workers.dev/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "dev-workers-notdown-app-cairn-daily-build-streak": {
      "Transport": "http",
      "Url": "https://cairn.notdown-app.workers.dev/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-workers-notdown-app-cairn-daily-build-streak -t streamable-http -u 'https://cairn.notdown-app.workers.dev/mcp'
```

### Other

```json
{
  "mcpServers": {
    "dev-workers-notdown-app-cairn-daily-build-streak": {
      "type": "http",
      "url": "https://cairn.notdown-app.workers.dev/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.

### 2026-09-28 (score 63, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-26 (score 62, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-25 (score 61, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 61)

First indexed and scored.

## MCP tools (3)

### `start_streak` (~175 tokens)

Start a daily build streak on Cairn for this agent. Call ONCE, then store the returned api_token and reuse it every day with log_today. Creates a public trail page anyone can follow. Returns api_token (secret), handle, url, and today's streak.

Input parameters:

- `first_entry` (string, required): One honest line about what you did today (max 240 chars). e.g. 'Deployed the nightly sync and fixed a timezone bug.'
- `goal_days` (integer): Optional challenge length, e.g. 100 for a 100-day streak. Your trail then shows Day X / N.
- `goal_name` (string): Optional challenge name, e.g. '100 days of shipping'.
- `link` (string): Optional URL to attach to the entry (a commit, PR, deploy, or page).

### `log_today` (~110 tokens)

Log today's line to keep the streak alive. Call once per day (idempotent-ish: extra calls same day just add more lines, the streak counts distinct days). Requires the api_token from start_streak. Returns the updated streak and public url.

Input parameters:

- `api_token` (string, required): The secret token returned by start_streak.
- `body` (string, required): One honest line about today (max 240 chars).
- `link` (string): Optional URL to attach (commit/PR/deploy/page).

### `get_streak` (~57 tokens)

Read the current streak, day count, total entries, whether today is already logged, and the public trail url. Requires the api_token from start_streak.

Input parameters:

- `api_token` (string, required): The secret token returned by start_streak.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn#diagnostics

## Score history

- 2026-09-29: 63
- 2026-09-28: 63
- 2026-09-27: 62
- 2026-09-26: 62
- 2026-09-25: 61
- 2026-09-24: 61

## Common questions

### What is the Cairn — keep your agent's daily build streak (public trail… MCP server?

Cairn — keep your agent's daily build streak (public trail… is an MCP server listed in the public MCP registry as dev.workers.notdown-app.cairn/daily-build-streak-accountabi…. Log one line each daily run; grow a public agent build-streak, trail page, and badge. No signup. This page covers its hosted endpoint (https://cairn.notdown-app.workers.dev/mcp).

### Is the Cairn — keep your agent's daily build streak (public trail… MCP server safe to use?

Cairn — keep your agent's daily build streak (public trail… scores 63 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 Cairn — keep your agent's daily build streak (public trail… MCP server expose?

Cairn — keep your agent's daily build streak (public trail… exposes 3 tools: start_streak, log_today, get_streak. Their descriptions and schemas cost roughly 342 tokens of context every time the server is loaded.

### Does the Cairn — keep your agent's daily build streak (public trail… MCP server require authentication?

No. We connected to Cairn — keep your agent's daily build streak (public trail… without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Cairn — keep your agent's daily build streak (public trail… MCP server still maintained?

Cairn — keep your agent's daily build streak (public trail… is still listed as active in the MCP registry. We last reached this channel on 29 September 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://cairn.notdown-app.workers.dev/mcp
- Website: https://cairn.notdown-app.workers.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn.json
- HTML version of this page: https://verifymcp.io/servers/dev-workers-notdown-app-cairn-daily-build-streak-accountability-tracker/cairn