# DecimalAI Skills Registry (pypi · decimalai-mcp)

Search agent skills ranked by measured lift vs a no-skill baseline, with safety and rankings.

- Trust score: 79/100 (medium)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- pypi · `decimalai-mcp`: 79/100 (this document), [markdown](https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp.md), [page](https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp)

## Channel facts

- Registry: `pypi`
- Package: `decimalai-mcp`
- Version: `0.1.3`
- Transport: `stdio`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-21.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs hatchling.build at install time, a recognised native-build step with no shell scripting around it.
  - 0 of 29 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 36 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 463 tokens (~154/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 83/100
  - Stability observed for 25 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **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 4 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 DecimalAI Skills Registry MCP server?

DecimalAI Skills Registry runs locally as a PyPI package, launched with uvx decimalai-mcp. 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 ai-decimal-registry -- uvx decimalai-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "ai-decimal-registry": {
      "command": "uvx",
      "args": [
        "decimalai-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "ai-decimal-registry": {
      "command": "uvx",
      "args": [
        "decimalai-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add ai-decimal-registry -- uvx decimalai-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ai-decimal-registry": {
      "type": "local",
      "command": [
        "uvx",
        "decimalai-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ai-decimal-registry --command uvx --arg decimalai-mcp
```

### Hermes

```yaml
mcp_servers:
  ai-decimal-registry:
    command: "uvx"
    args: ["decimalai-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "ai-decimal-registry": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "decimalai-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add ai-decimal-registry -t stdio -c uvx -a decimalai-mcp
```

### Other

```json
{
  "mcpServers": {
    "ai-decimal-registry": {
      "command": "uvx",
      "args": [
        "decimalai-mcp"
      ]
    }
  }
}
```

## 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.

### 2026-09-20 (score 79, −3)

- [functional] Stability: pass → 0.80

### 2026-09-19 (score 82, +1)

- [security] Stability: 0.97 → pass

### 2026-09-17 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 90 to 93. That category is still filling its 30-day observation window: 27 days of observed history at the previous scan, 28 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-15 (score 80, +1)

No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-13 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-10 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 67 to 70. That category is still filling its 30-day observation window: 20 days of observed history at the previous scan, 21 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-08 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 60 to 63. That category is still filling its 30-day observation window: 18 days of observed history at the previous scan, 19 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-09-06 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 53 to 57. That category is still filling its 30-day observation window: 16 days of observed history at the previous scan, 17 at this one. The score rises as the window fills, whether or not the server changes.

## MCP tools (3)

### `search_skills` (~117 tokens)

Search the public DecimalAI skills registry.

Args:
    query: Keyword or natural-language query (hybrid keyword/semantic search).
    category: Optional category filter (e.g. "retrieval", "code-review").
    sort: recommended (SkillScore v2, default) | lift | popular | top_rated |
        efficiency | rating | recent.
    limit: Max results (1-50).

Input parameters:

- `category`
- `limit` (integer)
- `query` (string, required)
- `sort` (string)

Output parameters:

- `result` (string)

### `get_skill` (~166 tokens)

Get one skill's full record: trust/safety-scan status, verified benchmark
evidence (lift vs no-skill baseline), SkillScore, ratings, and the SKILL.md body.

Args:
    slug: The skill's `url_slug` from search results — NOT its `name`. A
        registry name may be namespaced (`owner/skill`), and a slash cannot
        survive a single URL path segment, so a namespaced name 404s here.
        `url_slug` is the slash-free identifier minted for exactly this
        (`owner/skill` -> `owner-skill`); for a plain un-namespaced name the
        two are identical. The skill's UUID `id` also works.

Input parameters:

- `slug` (string, required)

Output parameters:

- `result` (string)

### `get_leaderboard` (~114 tokens)

Ranked skills leaderboard.

Args:
    sort: skill_score | biggest_improvement | efficiency | top_rated.
    category: Optional category filter (uses the registry's ranked browse
        view — the dedicated leaderboard endpoint is uncategorized).
    window_days: Ranking window in days (1-3650; ignored for skill_score).
    limit: Max entries (1-50).

Input parameters:

- `category`
- `limit` (integer)
- `sort` (string)
- `window_days` (integer)

Output parameters:

- `result` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp#diagnostics

## Score history

- 2026-09-21: 79
- 2026-09-20: 79
- 2026-09-19: 82
- 2026-09-18: 81
- 2026-09-17: 81
- 2026-09-16: 80
- 2026-09-15: 80
- 2026-09-14: 79
- 2026-09-13: 79
- 2026-09-12: 78
- 2026-09-11: 78
- 2026-09-10: 78
- 2026-09-09: 77
- 2026-09-08: 77
- 2026-09-07: 76
- 2026-09-06: 76
- 2026-09-05: 75
- 2026-09-04: 75
- 2026-09-03: 74
- 2026-09-02: 74
- 2026-09-01: 73
- 2026-08-31: 73
- 2026-08-30: 72
- 2026-08-29: 72
- 2026-08-28: 71
- 2026-08-27: 68
- 2026-08-26: 68
- 2026-08-25: 66
- 2026-08-24: 66
- 2026-08-23: 66

## Common questions

### What is the DecimalAI Skills Registry MCP server?

DecimalAI Skills Registry is an MCP server listed in the public MCP registry as ai.decimal/registry. Search agent skills ranked by measured lift vs a no-skill baseline, with safety and rankings. This page covers its PyPI package (decimalai-mcp).

### Is the DecimalAI Skills Registry MCP server safe to use?

DecimalAI Skills Registry scores 79 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 21 September 2026. 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 DecimalAI Skills Registry MCP server expose?

DecimalAI Skills Registry exposes 3 tools: search_skills, get_skill, get_leaderboard. Their descriptions and schemas cost roughly 397 tokens of context every time the server is loaded.

### Is the DecimalAI Skills Registry MCP server still maintained?

DecimalAI Skills Registry is still listed as active in the MCP registry. We last reached this channel on 21 September 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 DecimalAI Skills Registry MCP server under?

DecimalAI Skills Registry declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- PyPI project: https://pypi.org/project/decimalai-mcp/
- Socket report: https://socket.dev/pypi/package/decimalai-mcp
- Repository: https://github.com/decimal-labs/decimalai-mcp
- Website: https://app.decimal.ai/skills
- Changelog RSS feed: https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp.json
- HTML version of this page: https://verifymcp.io/servers/ai-decimal-registry/decimalai-mcp