SuperSkill Registry
Find, inspect and install reviewed reusable AI-agent capabilities from superskill.sh.
Should I use this
Quality & Safety
A
Findings (2)
- LOWTool 'pull_instructions' description lacks action verbin pull_instructions
- LOWTool 'pull_harness' description lacks action verbin pull_harness
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~2,782Tokens (tool definitions)
~1.8 KBTypical response size
Significant attention impact (2.17% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"registry": {
"url": "https://onlyharness.com/mcp"
}
}
}Remote endpoints
https://onlyharness.com/mcpstreamable-httphttps://superskill.sh/mcpstreamable-httpWhat it can do
Tool inventory
Tools (12)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢search(query)
Search public agent resources. Returns exact resource ids and canonical browser-openable URLs for citation.
Input Schema
{
"type": "object",
"properties": {
"query": {
"description": "Natural-language or keyword query for public SuperSkill resources.",
"type": "string",
"minLength": 1,
"maxLength": 500
}
},
"required": [
"query"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"results": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string"
},
"title": {
"type": "string"
},
"url": {
"type": "string",
"format": "uri"
}
},
"required": [
"id",
"title",
"url"
],
"additionalProperties": false
}
}
},
"required": [
"results"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢fetch(id)
Fetch the complete public catalog record for an exact resource id returned by search, including a canonical citation URL.
Input Schema
{
"type": "object",
"properties": {
"id": {
"description": "Exact resource id returned by search.",
"type": "string",
"minLength": 1,
"maxLength": 320
}
},
"required": [
"id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"id": {
"type": "string"
},
"title": {
"type": "string"
},
"text": {
"type": "string"
},
"url": {
"type": "string",
"format": "uri"
},
"metadata": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"required": [
"id",
"title",
"text",
"url"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢search_harnesses(query, limit)
Search the SuperSkill registry by task, job, title, summary or tag.
Input Schema
{
"type": "object",
"properties": {
"query": {
"description": "Search terms such as market research, support triage or finance safety.",
"default": "",
"type": "string"
},
"limit": {
"default": 10,
"type": "integer",
"minimum": 1,
"maximum": 20
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢harness_detail(owner, name)
Return manifest, trust signals, example and file list for one harness.
Input Schema
{
"type": "object",
"properties": {
"owner": {
"default": "harnesses",
"type": "string"
},
"name": {
"description": "Harness slug, for example deep-market-researcher.",
"type": "string"
}
},
"required": [
"name"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢search_resources(query, q, type, worksWith, limit)
Search mixed source-aware resources: harnesses, skills, plugins, workflows, MCP servers, configs, guides, runtimes and directories.
Input Schema
{
"type": "object",
"properties": {
"query": {
"description": "Search terms such as superpowers, MCP browser, workflow or Claude skill.",
"default": "",
"type": "string"
},
"q": {
"description": "Alias for query, matching the HTTP /resources?q= contract.",
"type": "string"
},
"type": {
"description": "Optional resource type filter, for example skill, plugin, workflow, mcp_server or harness.",
"type": "string"
},
"worksWith": {
"description": "Optional compatibility filter: claude-code, codex, cursor, mcp, cli or github.",
"type": "string"
},
"limit": {
"default": 10,
"type": "integer",
"minimum": 1,
"maximum": 20
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢resource_detail(id, version)
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 Schema
{
"type": "object",
"properties": {
"id": {
"description": "Exact mixed resource identifier.",
"type": "string"
},
"version": {
"description": "Optional immutable hosted release version. When supplied, latest is never used.",
"type": "string",
"pattern": "^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
}
},
"required": [
"id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢resource_use_instructions(id, version)
Return the best safe next action for a mixed resource. Pass version to bind an immutable hosted release. Hosted skills expose explicit-consent exact native client install commands; upstream-only resources stay open-only.
Input Schema
{
"type": "object",
"properties": {
"id": {
"description": "Exact mixed resource identifier.",
"type": "string"
},
"version": {
"description": "Optional immutable hosted release version. When supplied, latest is never used.",
"type": "string",
"pattern": "^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
}
},
"required": [
"id"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢pull_instructions(owner, name)
Return CLI and HTTP commands for pulling a harness into a local workspace.
Input Schema
{
"type": "object",
"properties": {
"owner": {
"default": "harnesses",
"type": "string"
},
"name": {
"type": "string"
}
},
"required": [
"name"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢pull_harness(owner, name, version)
Return archive files for a harness. Paid harnesses return payment requirements unless the Bearer token is entitled.
Input Schema
{
"type": "object",
"properties": {
"owner": {
"default": "harnesses",
"type": "string"
},
"name": {
"type": "string"
},
"version": {
"type": "string"
}
},
"required": [
"name"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🟢search_docs(query)
Search /llms.txt and agent guidance for API, CLI, MCP and safety instructions.
Input Schema
{
"type": "object",
"properties": {
"query": {
"default": "",
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🔴publish_markdown_to_harness(name, markdown)
Convert markdown into an unverified harness scaffold. Requires a SuperSkill Bearer token.
Input Schema
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"markdown": {
"type": "string",
"minLength": 20
}
},
"required": [
"markdown"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}🔴publish_resource_package(name, version, idempotencyKey, title, summary, ...)
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 Schema
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"version": {
"type": "string",
"pattern": "^(0|[1-9]\\d*)\\.(0|[1-9]\\d*)\\.(0|[1-9]\\d*)(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?(?:\\+[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$"
},
"idempotencyKey": {
"type": "string",
"minLength": 16,
"maxLength": 200,
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]+$"
},
"title": {
"type": "string"
},
"summary": {
"type": "string"
},
"resourceType": {
"type": "string"
},
"sourceUrl": {
"type": "string"
},
"worksWith": {
"type": "array",
"items": {
"type": "string"
}
},
"tags": {
"type": "array",
"items": {
"type": "string"
}
},
"files": {
"minItems": 1,
"maxItems": 120,
"type": "array",
"items": {
"type": "object",
"properties": {
"path": {
"type": "string"
},
"content": {
"type": "string"
},
"truncated": {
"type": "boolean"
}
},
"required": [
"path",
"content"
]
}
}
},
"required": [
"version",
"idempotencyKey",
"files"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"ok": {
"type": "boolean",
"const": true
},
"code": {
"type": "string",
"const": "OK"
},
"status": {
"type": "integer",
"minimum": 100,
"maximum": 599
}
},
"required": [
"ok",
"code",
"status"
],
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": {}
}Community
Evidence
Recent observations
verifiedversion not recorded12 tools
verifiedversion not recorded12 tools
verifiedversion not recorded12 tools
verifiedversion not recorded12 tools