Add Sigil Notary plugin — cryptographic audit trails for AI agents

[sly-the-fox]

What

Adds Sigil Notary as a plugin — tamper-evident, hash-chained audit trails for AI agents with Ed25519 signatures.

• Name: Sigil Notary
• Author: Chadd Harrison
• Homepage: https://github.com/sly-the-fox/sigil
• PyPI: https://pypi.org/project/sigil-notary/
• License: MIT
• Tags: security, audit, trust, mcp, agent, cryptography

Ships as an MCP server (uvx sigil-notary) with 3 tools: attest_action, verify_receipt, get_chain.

Summary by Sourcery

New Features:

• Introduce the Sigil Notary plugin definition as a new MCP server integration with tools for attestation, verification, and chain inspection.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds a new MCP server plugin definition for the Sigil Notary service, exposing cryptographic audit trail capabilities (attest, verify, and chain inspection) as tools for AI agents.

File-Level Changes

Change	Details	Files
Introduce Sigil Notary as an MCP server plugin with cryptographic audit trail tools.	Add a new MCP plugin JSON manifest for the Sigil Notary server Define the MCP server command invocation (uvx sigil-notary) and connection details in the manifest Expose three tools in the manifest: attest_action, verify_receipt, and get_chain, including their basic metadata and usage info	src/sigil-notary.json

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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