# SuperSkill Registry (remote · superskill.sh)

Find, inspect and install reviewed reusable AI-agent capabilities from superskill.sh.

- Trust score: 64/100 (medium)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `superskill.sh`: 64/100 (this document), [markdown](https://verifymcp.io/servers/com-onlyharness-registry/superskill.md), [page](https://verifymcp.io/servers/com-onlyharness-registry/superskill)

## Channel facts

- Endpoint: `https://superskill.sh/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.3.1`

## 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 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (publish_markdown_to_harness).
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - 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**: 60/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 757 tokens (~63/item across 12 items; 12 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 82/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 36% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http com-onlyharness-registry https://superskill.sh/mcp
```

### Codex

```toml
[mcp_servers.com-onlyharness-registry]
url = "https://superskill.sh/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-onlyharness-registry": {
      "type": "remote",
      "url": "https://superskill.sh/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-onlyharness-registry --url https://superskill.sh/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-onlyharness-registry:
    url: "https://superskill.sh/mcp"
```

### Other

```json
{
  "mcpServers": {
    "com-onlyharness-registry": {
      "type": "http",
      "url": "https://superskill.sh/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.

### 2026-08-03 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 62, +2)

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

### 2026-07-30 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 59, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-07-27 (score 58)

First indexed and scored.

## MCP tools (12)

### `search` (~42 tokens)

Search public SuperSkill resources

Search public agent resources. Returns exact resource ids and canonical browser-openable URLs for citation.

Input parameters:

- `query` (string, required): Natural-language or keyword query for public SuperSkill resources.

Output parameters:

- `results` (array)

### `fetch` (~41 tokens)

Fetch a public SuperSkill resource

Fetch the complete public catalog record for an exact resource id returned by search, including a canonical citation URL.

Input parameters:

- `id` (string, required): Exact resource id returned by search.

Output parameters:

- `id` (string)
- `metadata` (object)
- `text` (string)
- `title` (string)
- `url` (string)

### `search_harnesses` (~53 tokens)

Search harnesses

Search the SuperSkill registry by task, job, title, summary or tag.

Input parameters:

- `limit` (integer)
- `query` (string): Search terms such as market research, support triage or finance safety.

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `harness_detail` (~46 tokens)

Harness detail

Return manifest, trust signals, example and file list for one harness.

Input parameters:

- `name` (string, required): Harness slug, for example deep-market-researcher.
- `owner` (string)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `search_resources` (~134 tokens)

Search agent resources

Search mixed source-aware resources: harnesses, skills, plugins, workflows, MCP servers, configs, guides, runtimes and directories.

Input parameters:

- `limit` (integer)
- `q` (string): Alias for query, matching the HTTP /resources?q= contract.
- `query` (string): Search terms such as superpowers, MCP browser, workflow or Claude skill.
- `type` (string): Optional resource type filter, for example skill, plugin, workflow, mcp_server or harness.
- `worksWith` (string): Optional compatibility filter: claude-code, codex, cursor, mcp, cli or github.

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `resource_detail` (~70 tokens)

Resource detail

Return provenance, trust, popularity and actions for one mixed resource. Pass version to bind a hosted immutable release; latest is never substituted for an explicit version.

Input parameters:

- `id` (string, required): Exact mixed resource identifier.
- `version` (string): Optional immutable hosted release version. When supplied, latest is never used.

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `resource_use_instructions` (~80 tokens)

Resource use instructions

Return the best safe next action for a mixed resource. Pass version to bind an immutable hosted release. Hosted skills expose explicit-consent exact native client install commands; upstream-only resources stay open-only.

Input parameters:

- `id` (string, required): Exact mixed resource identifier.
- `version` (string): Optional immutable hosted release version. When supplied, latest is never used.

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `pull_instructions` (~37 tokens)

Pull instructions

Return CLI and HTTP commands for pulling a harness into a local workspace.

Input parameters:

- `name` (string, required)
- `owner` (string)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `pull_harness` (~51 tokens)

Pull harness

Return archive files for a harness. Paid harnesses return payment requirements unless the Bearer token is entitled.

Input parameters:

- `name` (string, required)
- `owner` (string)
- `version` (string)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `search_docs` (~33 tokens)

Search SuperSkill docs

Search /llms.txt and agent guidance for API, CLI, MCP and safety instructions.

Input parameters:

- `query` (string)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `publish_markdown_to_harness` (~43 tokens)

Publish markdown to harness

Convert markdown into an unverified harness scaffold. Requires a SuperSkill Bearer token.

Input parameters:

- `markdown` (string, required)
- `name` (string)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

### `publish_resource_package` (~127 tokens)

Publish agent resource package

Publish an immutable canonical hosted package release. Requires a confirmed-user Bearer with active superskill:managed scope, semantic version and idempotency key. Returns unreviewed trust; never grants a Verified badge.

Input parameters:

- `files` (array, required)
- `idempotencyKey` (string, required)
- `name` (string)
- `resourceType` (string)
- `sourceUrl` (string)
- `summary` (string)
- `tags` (array)
- `title` (string)
- `version` (string, required)
- `worksWith` (array)

Output parameters:

- `code` (string)
- `ok` (boolean)
- `status` (integer)

## Diagnostics

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

## Score history

- 2026-08-03: 64
- 2026-08-02: 63
- 2026-08-01: 63
- 2026-07-31: 62
- 2026-07-30: 60
- 2026-07-29: 59
- 2026-07-28: 59
- 2026-07-27: 58

## Links

- Remote endpoint: https://superskill.sh/mcp
- Repository: https://github.com/elvismusli/onlyharness
- Website: https://superskill.sh/
- Changelog RSS feed: https://verifymcp.io/servers/com-onlyharness-registry/superskill/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-onlyharness-registry/superskill/changelog.json
- HTML version of this page: https://verifymcp.io/servers/com-onlyharness-registry/superskill