gmeow-gts 0.1.3

GTS (Graph Transport Substrate): a single-file CBOR transport for RDF 1.2 graphs — append-only log, BLAKE3 chain verification, deterministic fold, multi-segment cat-append composition.

gts — Graph Transport Substrate

A single-file, language-independent transport for an RDF 1.2 graph (statements and statement-level metadata) together with any content-addressed binary the graph references.

A GTS file is a CBOR Sequence of one or more segments, each an append-only log: a header followed by frames chained by BLAKE3 content-id. Composition is cat — concatenating valid GTS files yields a valid GTS file whose fold is the value-union of the segment graphs.

This package is the Python reference implementation of the GTS specification: reader (fold, chain verification, opaque degradation, torn-append detection), writer, COSE signing, N-Quads projection, and the frozen language-neutral conformance corpus. A Rust engine implementing the same spec is gated against the identical corpus and will ship inside this package as a native wheel.

Install

pip install gmeow-gts

The installed package name is gmeow-gts; the import name and CLI binary both remain gts, and GTS files keep the .gts extension.

Library

from pathlib import Path

import gts

graph = gts.read(Path("package.gts").read_bytes())
print(gts.to_nquads(graph))

Command line

gts info <file>...            per-segment composition ledger
gts fold <file>               fold to N-Quads on stdout
gts verify <file>...          verify chains; exit 1 on any diagnostic
gts cat -o <out> <file>...    validating composer: refuse degenerate inputs,
                              then byte-concatenate

cat output is the raw byte concatenation — validation added, transformation never. It refuses dirty inputs, contributes-nothing segments, and compositions whose suppressions hide every folded quad.

Example: grounded agent memory

The gts.examples.agent_memory module shows how to build a tiny claim store on top of GTS: every claim is a reified RDF 1.2 statement with confidence, standpoint, source, and timestamp; revision is supersession, never deletion; the file is always a valid, gts verify-able package.

pip install gmeow-gts
python -m gts.examples.agent_memory

from gts.examples.agent_memory import Memory

mem = Memory("assistant.gts")
mem.store(
    "Patrick prefers explicit error handling over exceptions-as-flow",
    source="conversation 2026-06-10",
    confidence=0.8,
    according_to="claude-fable-5",
)
print([c.text for c in mem.recall("error handling")])

For rdflib interop, install the optional rdf extra:

pip install 'gmeow-gts[rdf]'

Verifying the build

Wheels and sdists for gmeow-gts are built in GitHub Actions and signed with GitHub artifact attestations. After downloading a package from PyPI, verify it with:

gh attestation verify <path-to-wheel-or-sdist> --repo Blackcat-Informatics/gmeow-gts

An SPDX SBOM is also generated for each release and attached as a workflow artifact.

License

Triple-licensed: MIT OR Apache-2.0 OR proprietary — use under MIT or Apache-2.0 at your option; a proprietary license is also available (see LICENSING.md). © Blackcat Informatics® Inc.