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Agent-First API
Agents can autonomously discover, evaluate, and install skills  ·  GET /v1/agent/search?capability=web_search
/llms.txt /v1/agent/info USK Spec Register Skill
USK v3 — AI Skill Store's primary skill standard. Write once, auto-convert for 7 platforms. Anthropic SKILL.md v2 also accepted as compatibility input.
📖 USK Guide USK Spec

🔥 Popular Skills — Top 5 by downloads

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Most Wanted · 3 unmet searches
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📦 All Skills 263

approved Web Search

Multi-engine web search aggregator supporting SerpAPI/Tavily/Brave/Bing with unified output schema, automatic fallback, and mock demo mode. 멀티 엔진 통합 검색, 자동 폴백, 웹 검색 통합 어댑터.

approved Development

GraphQL SDL schema and query validation offline. GraphQL 스키마 검증, SDL 유효성 확인. Detects type conflicts, undefined fields, deprecated usage, and query depth violations.

approved Development

SemVer 2.0 version comparison, range matching (^1.2.3, ~0.4.0, >=2.0.0 <3.0.0), sorting, and parsing. Deterministic dependency compatibility checks without external API.

approved Data Processing

Apply JMESPath expressions to JSON data for path-based extraction and filtering. JSON 경로 추출, API 응답 필터링. Deterministic, offline, no external API.

approved Development

Validate Lua 5.3/5.4 source code via AST parsing. Returns error locations (line:col), error type, and optional AST summary. Deterministic, offline, no external API.

approved Knowledge

Search arXiv preprints (CS/AI/physics/math/economics) and return structured metadata — title, authors, abstract, DOI, categories, PDF URL — as JSON.

approved Data Processing

Parse, validate, and extract fields from HL7 v2.x pipe-delimited messages. Structured JSON output per segment. Covers ADT, ORU, ORM, SIU message types for legacy hospital system integration.

approved Utilities

RFC 5545 .ics / iCalendar string parser — event extraction, RRULE expansion, timezone normalization, conflict detection

approved Development

Deterministic YAML syntax + style validation (indentation, line length, trailing spaces, duplicate keys) with exact line/column positions and rule names. Standard tool for CI/CD pipelines and agent self-correction loops.

approved Knowledge

Offline FHIR R4 resource validation (Patient, Observation, Bundle, etc). Checks required fields, data types, and coding rules. Returns structured errors with fix hints. No live FHIR server required.

approved Utilities

Fill PDF AcroForm fields from JSON data, extract field list, and return completed PDF as base64. Ideal for contracts, government forms, and HR documents.

colony-memory v0.1.0
approved

Back up and restore an AI agent's memory to its own Colony vault — versioned, integrity-checked, optionally ed25519-signed snapshots. Wraps the colony-memory library as stdin/stdout JSON actions.

approved Knowledge

Look up, validate, search, and traverse the hierarchy of ICD-10-CM FY2026 diagnosis codes. Bundled offline data — no external API needed. Prevents insurance claim rejections and medical record errors caused by invalid or hallucinated diagnosis codes.

approved Development

Validates OpenSearch/Elasticsearch Query DSL JSON deterministically — bool clause structure, aggregation type conflicts, disallowed field nesting, and deprecated parameters — without a live cluster. Designed for CI/CD pre-deployment query checks.

approved Web Search

NCBI E-utilities API로 PubMed 논문을 검색하고 초록·저자·DOI를 구조화된 JSON으로 반환합니다. 의료·연구 에이전트가 실시간 바이오메디컬 문헌에 접근하는 결정론적 연결 레이어. Search PubMed via NCBI E-utilities and return structured article metadata (title, authors, abstract, DOI) as JSON.

approved Security

A documentation‑only meta‑skill that teaches AI agents how to generate secure, zero‑exposure skills using MGC Blackbox for credential management. Contains no executable code.

approved Development

Validate XML documents against XSD schemas; returns structured JSON with XPath paths, messages, and line numbers. Supports inline or URL-fetched XML/XSD.

approved Data Processing

Parses SQL DDL statements (CREATE TABLE, INDEX, CONSTRAINT) into structured JSON — tables, columns, types, constraints, foreign keys. Supports MySQL, PostgreSQL, BigQuery, Snowflake, MSSQL, SQLite with auto-dialect detection.

approved Utilities

Parse and validate TOML config files, extract key paths, and convert to JSON. Supports pyproject.toml, Cargo.toml, config.toml. Zero external dependencies (Python 3.11 stdlib tomllib).

approved Development

Validates PHP code syntax using php -l (built-in lint). Returns structured JSON with error line numbers, messages, and types. Designed as a deterministic validation anchor for agent self-repair loops.

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