How do I install the Stix2 Validator skill?

Run npx skillmds add majiayu000/stix2-validator in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

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Is Stix2 Validator free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Stix2 Validator?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Stix2 Validator by majiayu000 — Agent Skill

Name: Stix2 Validator
Rating: 4.2 (5 reviews)
Author: majiayu000

Stix2 Validator

Validate STIX 2.1 JSON files and bundles against the STIX specification. Use when validating threat intelligence data, checking STIX bundle integrity before ingestion, verifying indicator/malware/attack-pattern objects have required fields, or bulk-validating directories of STIX files. Provides detailed error reports showing which objects failed and why.

majiayu000 e6b40ef 2 files · 2.5 KB Updated Sep 9, 2026 567 repo stars

File contents

STIX 2.1 Validator

Validate STIX 2.1 JSON bundles using the official stix2-validator library.

Requirements

Install the validator library before use:

pip install stix2-validator --break-system-packages

Usage

Validate a Single File

python scripts/validate_stix.py /path/to/bundle.json

Validate a Directory

python scripts/validate_stix.py /path/to/stix_files/

Add -r for recursive subdirectory scanning.

Options

Option	Description
`--strict`	Enable all optional validation checks
`--enforce-refs`	Warn when object references don't resolve within the bundle
`-r, --recursive`	Recursively validate files in subdirectories
`--json`	Output results as JSON for programmatic use
`-q, --quiet`	Suppress success messages, show only errors

JSON Output

For integration with other tools, use --json:

python scripts/validate_stix.py bundle.json --json

Returns structured output:

{
  "file": "bundle.json",
  "valid": false,
  "errors": [
    {"id": "indicator--abc123", "type": "", "message": "'pattern_type' is a required property"}
  ],
  "warnings": []
}

Error Categories

The validator checks for:

Schema errors: Missing required properties, invalid property types
Format errors: Malformed UUIDs, invalid timestamps, incorrect ID formats
Reference errors: Unresolved object references (with --enforce-refs)
Semantic errors: Invalid STIX patterns, constraint violations

Exit Codes

0: All files valid
1: Validation errors found or file not found

---name: stix2-validatordescription: Validate STIX 2.1 JSON files and bundles against the STIX specification. Use when validating threat intelligence data, checking STIX bundle integrity before ingestion, verifying indicator/malware/attack-pattern objects have required fields, or bulk-validating directories of STIX files. Provides detailed error reports showing which objects failed and why.--- # STIX 2.1 Validator Validate STIX 2.1 JSON bundles using the official stix2-validator library. ## Requirements Install the validator library before use: ```bash pip install stix2-validator --break-system-packages ``` ## Usage ### Validate a Single File ```bash python scripts/validate_stix.py /path/to/bundle.json ``` ### Validate a Directory ```bash python scripts/validate_stix.py /path/to/stix_files/ ``` Add `-r` for recursive subdirectory scanning. ### Options | Option | Description | |--------|-------------| | `--strict` | Enable all optional validation checks | | `--enforce-refs` | Warn when object references don't resolve within the bundle | | `-r, --recursive` | Recursively validate files in subdirectories | | `--json` | Output results as JSON for programmatic use | | `-q, --quiet` | Suppress success messages, show only errors | ### JSON Output For integration with other tools, use `--json`: ```bash python scripts/validate_stix.py bundle.json --json ``` Returns structured output: ```json { "file": "bundle.json", "valid": false, "errors": [ {"id": "indicator--abc123", "type": "", "message": "'pattern_type' is a required property"} ], "warnings": [] } ``` ## Error Categories The validator checks for: - **Schema errors**: Missing required properties, invalid property types - **Format errors**: Malformed UUIDs, invalid timestamps, incorrect ID formats - **Reference errors**: Unresolved object references (with `--enforce-refs`) - **Semantic errors**: Invalid STIX patterns, constraint violations ## Exit Codes - `0`: All files valid - `1`: Validation errors found or file not found

Frequently asked questions