comet-rs 0.1.1

CLI and library for extracting maSMP/CODEMETA metadata (and sources) from code repositories

comet-rs

CLI and Python library for extracting maSMP / CODEMETA metadata (plus per‑property sources and confidence) from GitHub and GitLab repositories.

Given a repository URL, comet-rs:

• Calls the platform API (GitHub / GitLab)
• Parses files like CITATION.cff, LICENSE, and README.md
• Optionally enriches with external services (OpenAlex, archives)
• Builds a maSMP or CODEMETA JSON‑LD document
• Tracks, for each property, which source set it and with what confidence

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Installation

pip install comet-rs

Python 3.10+ is required.

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CLI usage

Extract full metadata

comet-rs extract https://github.com/zbmed-semtec/maSMP-metadata-extraction maSMP --with-enrichment

Outputs JSON with:

• schema: maSMP or CODEMETA
• code_url: repository URL
• results: JSON‑LD document
• enriched_metadata: per‑property source / confidence / category (for maSMP)

Extract a single property (value + source)

comet-rs extract_property https://github.com/zbmed-semtec/maSMP-metadata-extraction author

Example output:

{
  "property_name": "author",
  "property_value": [
    {
      "@type": "Person",
      "familyName": "",
      "givenName": "Daniel",
      "@id": "https://orcid.org/0000-0003-0454-7145"
    }
  ],
  "source": "citation_cff",
  "confidence": 0.93
}

By default, extract_property uses the maSMP schema. To use CODEMETA:

comet-rs extract_property https://github.com/owner/repo name --schema CODEMETA

Compute a FAIRness assessment

comet-rs fairness https://github.com/zbmed-semtec/maSMP-metadata-extraction maSMP

Outputs JSON with:

• schema: maSMP or CODEMETA
• code_url: repository URL
• results: JSON‑LD document used for the assessment
• fairness: full FAIRness report (overall score, per‑principle scores, and indicator details)

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Authentication & rate limits

For public repositories you can often run without a token, but GitHub and GitLab apply rate limits. For heavier use or private repos, set:

export GITHUB_TOKEN=ghp_...      # for github.com URLs
export GITLAB_TOKEN=glpat_...    # for gitlab.com URLs

comet-rs automatically picks the right token based on the repository URL, or you can pass --token explicitly:

comet-rs extract https://gitlab.com/owner/repo maSMP --token glpat_...

Tokens only need minimal read scopes (repo / read:org on GitHub, read_api / read_repository on GitLab).

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Python API

You can also call the extractor directly from Python using the comet_rs package.

Full extraction

import os

import comet_rs

jsonld_document, enriched = comet_rs.extract_metadata(
    "https://github.com/zbmed-semtec/maSMP-metadata-extraction",
    schema="maSMP",                              # or "CODEMETA"
    token=os.getenv("GITHUB_TOKEN"),            # or GITLAB_TOKEN for GitLab
    with_enrichment=True,                       # False for JSON‑LD only
)

# jsonld_document: maSMP/CODEMETA JSON‑LD (dict)
# enriched: per‑property source/confidence/category (or None)

Extract a single property in Python

import comet_rs

extracted_at, matches = comet_rs.extract_property(
    "https://github.com/zbmed-semtec/maSMP-metadata-extraction",
    "author",                     # JSON-LD key or entity field name
    schema="maSMP",               # or "CODEMETA"
    token=os.getenv("GITHUB_TOKEN"),
)

for match in matches:
    print("Profile:", match["profile"])
    print("Value:", match["value"])
    print("Source:", match.get("source"))
    print("Confidence:", match.get("confidence"))

FAIRness assessment in Python

import os

import comet_rs

jsonld_document, fairness_report = comet_rs.assess_fairness(
    "https://github.com/zbmed-semtec/maSMP-metadata-extraction",
    schema="maSMP",               # or "CODEMETA"
    token=os.getenv("GITHUB_TOKEN"),
)

print("Overall score:", fairness_report.overall_score)
print("Findable score:", fairness_report.findable.score)
print("Accessible score:", fairness_report.accessible.score)
print("Interoperable score:", fairness_report.interoperable.score)
print("Reusable score:", fairness_report.reusable.score)

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Project links & docs

• Source code: GitHub / GitLab repository where comet-rs is developed
• Backend architecture and development docs:
  • README.md in the repo root (architecture & local FastAPI server)
  • docs/DEVELOPER_GUIDE.md
  • docs/ADDING_NEW_PLATFORM.md

Use those documents if you want to contribute, run the FastAPI backend locally, or add support for new code hosting platforms.