registry.query

registry.query

Version: 0.1.0 Status: Active Tags: registry, search, query, discovery, metadata, cli

Overview

The registry.query skill enables programmatic searching of Betty registries (skills, agents, and commands) with flexible filtering capabilities. It's designed for dynamic discovery, workflow automation, and CLI autocompletion.

Features

• Multi-Registry Support: Query skills, agents, commands, or hooks registries
• Flexible Filtering: Filter by name, version, status, tags, domain, and capability
• Fuzzy Matching: Optional fuzzy search for name and capability fields
• Result Limiting: Control the number of results returned
• Rich Metadata: Returns key metadata for each matching entry
• Multiple Output Formats: JSON, table, or compact format for different use cases
• Table Formatting: Aligned column display for easy CLI viewing

Usage

Command Line

# List all skills (compact format, default)
python3 skills/registry.query/registry_query.py skills

# Find skills with 'api' tag in table format
python3 skills/registry.query/registry_query.py skills --tag api --format table

# Find agents with 'design' capability
python3 skills/registry.query/registry_query.py agents --capability design

# Query hooks registry
python3 skills/registry.query/registry_query.py hooks --status active --format table

# Find active skills with name containing 'validate'
python3 skills/registry.query/registry_query.py skills --name validate --status active

# Fuzzy search for commands
python3 skills/registry.query/registry_query.py commands --name test --fuzzy

# Limit results to top 5
python3 skills/registry.query/registry_query.py skills --tag api --limit 5

# Get full JSON output
python3 skills/registry.query/registry_query.py skills --tag validation --format json

Programmatic Use

from skills.registry.query.registry_query import query_registry

# Query skills with API tag
result = query_registry(
    registry="skills",
    tag="api",
    status="active"
)

if result["ok"]:
    matching_entries = result["details"]["results"]
    for entry in matching_entries:
        print(f"{entry['name']}: {entry['description']}")

Betty CLI

# Via Betty CLI (when registered)
betty registry query skills --tag api
betty registry query agents --capability "API design"

Parameters

Required

• registry (string): Registry to query
  • Valid values: skills, agents, commands, hooks

Optional Filters

• name (string): Filter by name (substring match, case-insensitive)
• version (string): Filter by exact version match
• status (string): Filter by status (e.g., active, draft, deprecated, archived)
• tag (string): Filter by single tag
• tags (array): Filter by multiple tags (matches any)
• capability (string): Filter by capability (agents only, substring match)
• domain (string): Filter by domain (alias for tag filter)
• fuzzy (boolean): Enable fuzzy matching for name and capability
• limit (integer): Maximum number of results to return
• format (string): Output format (json, table, compact)
  • json: Full JSON response with all metadata
  • table: Aligned column table for easy reading
  • compact: Detailed list format (default)

Output Format

Success Response

{
  "ok": true,
  "status": "success",
  "errors": [],
  "timestamp": "2025-10-23T10:30:00.000000Z",
  "details": {
    "registry": "skills",
    "query": {
      "name": "api",
      "version": null,
      "status": "active",
      "tags": ["validation"],
      "capability": null,
      "domain": null,
      "fuzzy": false,
      "limit": null
    },
    "total_entries": 21,
    "matching_entries": 3,
    "results": [
      {
        "name": "api.validate",
        "version": "0.1.0",
        "description": "Validates OpenAPI or AsyncAPI specifications...",
        "status": "active",
        "tags": ["api", "validation", "openapi", "asyncapi"],
        "dependencies": ["context.schema"],
        "entrypoints": [
          {
            "command": "/api/validate",
            "runtime": "python",
            "description": "Validate API specification files"
          }
        ],
        "inputs": [...],
        "outputs": [...]
      }
    ]
  }
}

Error Response

{
  "ok": false,
  "status": "failed",
  "errors": ["Invalid registry: invalid_type"],
  "timestamp": "2025-10-23T10:30:00.000000Z"
}

Metadata Fields by Registry Type

Skills

• name, version, description, status, tags
• dependencies: List of required skills
• entrypoints: Available commands and handlers
• inputs: Expected input parameters
• outputs: Generated outputs

Agents

• name, version, description, status, tags
• capabilities: List of agent capabilities
• skills_available: Skills the agent can invoke
• reasoning_mode: oneshot or iterative
• context_requirements: Required context fields

Commands

• name, version, description, status, tags
• execution: Execution configuration (type, target)
• parameters: Command parameters

Hooks

• name, version, description, status, tags
• event: Hook event trigger (e.g., on_file_edit, on_commit)
• command: Command to execute
• enabled: Whether the hook is enabled

Use Cases

1. Dynamic Discovery

Find skills related to a specific domain:

python3 skills/registry.query/registry_query.py skills --domain api

2. Workflow Automation

Programmatically find and invoke skills:

# Find validation skills
result = query_registry(registry="skills", tag="validation", status="active")

for skill in result["details"]["results"]:
    print(f"Found validation skill: {skill['name']}")
    # Invoke skill programmatically

3. CLI Autocompletion

Generate autocompletion data:

# Get all active skill names for tab completion
result = query_registry(registry="skills", status="active")
skill_names = [s["name"] for s in result["details"]["results"]]

4. Dependency Resolution

Find skills with specific dependencies:

result = query_registry(registry="skills", status="active")
for skill in result["details"]["results"]:
    if "context.schema" in skill.get("dependencies", []):
        print(f"{skill['name']} depends on context.schema")

5. Capability Search

Find agents by capability:

python3 skills/registry.query/registry_query.py agents --capability "API design"

6. Hooks Management

Query and monitor hooks:

# List all hooks in table format
python3 skills/registry.query/registry_query.py hooks --format table

# Find hooks by event type
python3 skills/registry.query/registry_query.py hooks --tag commit

# Find enabled hooks
python3 skills/registry.query/registry_query.py hooks --status active

7. Status Monitoring

Find deprecated or draft entries:

python3 skills/registry.query/registry_query.py skills --status deprecated
python3 skills/registry.query/registry_query.py skills --status draft

Future Extensions

The skill is designed with these future enhancements in mind:

1. Advanced Fuzzy Matching: Implement more sophisticated fuzzy matching algorithms (e.g., Levenshtein distance)
2. Full-Text Search: Search within descriptions and documentation
3. Dependency Graph: Query dependency relationships between skills
4. Version Ranges: Support semantic version range queries (e.g., >=1.0.0,<2.0.0)
5. Sorting Options: Sort results by name, version, or relevance
6. Regular Expression Support: Use regex patterns for advanced filtering
7. Marketplace Integration: Query marketplace catalogs with certification status
8. Performance Caching: Cache registry data for faster repeated queries

Examples

Example 1: Find all API-related skills in table format

$ python3 skills/registry.query/registry_query.py skills --tag api --format table

================================================================================
REGISTRY QUERY: SKILLS
================================================================================

Total entries: 21
Matching entries: 5

+-------------------+---------+--------+---------------------------+-------------------------+
| Name              | Version | Status | Tags                      | Commands                |
+-------------------+---------+--------+---------------------------+-------------------------+
| api.define        | 0.1.0   | active | api, openapi, asyncapi    | /api/define             |
| api.validate      | 0.1.0   | active | api, validation, openapi  | /api/validate           |
| api.compatibility | 0.1.0   | draft  | api, compatibility        | /api/compatibility      |
| api.generate      | 0.1.0   | active | api, codegen              | /api/generate           |
| api.test          | 0.1.0   | draft  | api, testing              | /api/test               |
+-------------------+---------+--------+---------------------------+-------------------------+

================================================================================

Example 2: Find all API-related skills in compact format

$ python3 skills/registry.query/registry_query.py skills --tag api

================================================================================
REGISTRY QUERY: SKILLS
================================================================================

Total entries: 21
Matching entries: 5

--------------------------------------------------------------------------------
RESULTS:
--------------------------------------------------------------------------------

1. api.define (v0.1.0)
   Status: active
   Description: Generates OpenAPI 3.1 or AsyncAPI 2.6 specifications from natural language...
   Tags: api, openapi, asyncapi, scaffolding
   Commands: /api/define

2. api.validate (v0.1.0)
   Status: active
   Description: Validates OpenAPI or AsyncAPI specifications against their respective schemas...
   Tags: api, validation, openapi, asyncapi
   Commands: /api/validate

...

Example 3: Query hooks registry

$ python3 skills/registry.query/registry_query.py hooks --format table

================================================================================
REGISTRY QUERY: HOOKS
================================================================================

Total entries: 3
Matching entries: 3

+------------------+---------+--------+------------------+----------------------------------------+---------+
| Name             | Version | Status | Event            | Command                                | Enabled |
+------------------+---------+--------+------------------+----------------------------------------+---------+
| pre-commit-lint  | 0.1.0   | active | on_commit        | python3 hooks/lint.py                  | True    |
| auto-test        | 0.1.0   | active | on_file_save     | pytest tests/                          | True    |
| telemetry-log    | 0.1.0   | active | on_workflow_end  | python3 hooks/telemetry.py --capture   | True    |
+------------------+---------+--------+------------------+----------------------------------------+---------+

================================================================================

Example 4: Find agents that can design APIs

$ python3 skills/registry.query/registry_query.py agents --capability design

================================================================================
REGISTRY QUERY: AGENTS
================================================================================

Total entries: 2
Matching entries: 1

--------------------------------------------------------------------------------
RESULTS:
--------------------------------------------------------------------------------

1. api.designer (v0.1.0)
   Status: draft
   Description: Design RESTful APIs following best practices and guidelines...
   Tags: api, design, openapi
   Capabilities: 7 capabilities
   Reasoning: iterative

Example 5: Fuzzy search with limit

$ python3 skills/registry.query/registry_query.py skills --name vld --fuzzy --limit 3

# Finds: api.validate, context.validate, etc.

Error Handling

The skill handles various error conditions:

• Invalid registry type: Returns error with valid options
• Missing registry file: Returns empty results with warning
• Invalid JSON: Returns error with details
• Invalid filter combinations: Logs warnings and proceeds with valid filters

Performance Considerations

• Registry files are loaded once per query
• Filtering is performed in memory (O(n) complexity)
• For large registries, use --limit to control result size
• Consider caching registry data for repeated queries in production

Dependencies

• None: This skill has no dependencies on other Betty skills
• Python Standard Library: Uses json, re, pathlib
• Betty Framework: Requires betty.config, betty.logging_utils, betty.errors

Permissions

• filesystem:read: Required to read registry JSON files

Contributing

To extend this skill:

1. Add new filter types in filter_entries()
2. Enhance fuzzy matching in matches_pattern()
3. Add new metadata extractors in extract_key_metadata()
4. Update tests and documentation

See Also

• skill.define: Define new skills
• agent.define: Define new agents
• plugin.sync: Sync registry files
• marketplace: Betty marketplace catalog