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Proof-chain registry for AI agents — backed by Walrus for persistent, portable, verifiable memory

Project description

verity

A proof-chain registry for AI agents — backed by Walrus for persistent, portable, verifiable memory.

CI Coverage PyPI version Python 3.11+ License: MIT


What it does

verity gives AI agents structured, portable memory:

feature → claim → test → evidence → release
                                       │
                              verity push ──► Walrus blob ID (immutable)
                              verity pull ◄── restore anywhere, any agent
  1. Proof-chain registry — track what an agent claimed, what it tested, and what it proved, all in a single verity.json file.
  2. Agent memory layer — push the registry to Walrus (or MemWal) and pull it back in any future session, on any machine, by any agent.

Built for the Sui Overflow hackathon, Walrus track.


Install

pip install walrus-verity

# With MemWal support
pip install "walrus-verity[memwal]"

Quick start

verity init --repo-id repo:my-project

verity add feature feat:auth "User authentication"
verity add claim   clm:auth.t1 "Login succeeds" --feature feat:auth
verity add test    tst:auth.unit "Unit test" --claim clm:auth.t1 --kind unit --path tests/test_auth.py
verity add evidence evd:auth.run1 "CI run" --test tst:auth.unit --artifact artifacts/run1.json --status passed

verity validate          # → OK
verity release 1.0.0     # fail-closed — all verified claims need passed evidence
verity push              # → blob: AbCdEfGh…

# Any agent, any machine, any future session:
verity pull AbCdEfGh…
$ verity validate
OK

$ verity release 1.0.0
Released rel:1.0.0 at 2026-05-23T19:08:25Z
  claims: clm:auth.t1

$ verity push
blob: AbCdEfGhIjKlMnOpQrStUvWxYz0123456789

$ verity log
  1.  [walrus]  2026-05-23T19:08:25Z  AbCdEfGhIjKlMnOpQrStUvWxYz0123456789

Documentation

Topic
CLI Reference All commands: init, add, validate, release, push, pull, log, site
Python API VeritySession, low-level functions, custom backends
Schema Reference verity.json fields, ID prefixes, status values, validation rules
Walrus Setup Testnet, mainnet, custom endpoints
MemWal Setup Env vars, delegate keys, namespace isolation
Multi-Agent Patterns Handoff pattern, audit trail, dry-run
Scripts store_project_context.py — seed MemWal with verity project knowledge

Acknowledgements

The proof-chain model — feature → claim → test → evidence → release — is directly inspired by the ssot-registry project, licensed under Apache 2.0. verity adapts that model for AI agents and Walrus-backed persistence.


Contributing

See CONTRIBUTING.md. Run tests with uv run pytest.

License

MIT — see LICENSE.

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