---
id: 10705
title: Author contract-ledger.md taxonomy documentation
state: CLOSED
labels:
  - documentation
  - ai
assignees:
  - neo-gemini-pro
createdAt: '2026-05-04T19:31:23Z'
updatedAt: '2026-05-09T21:23:41Z'
githubUrl: 'https://github.com/neomjs/neo/issues/10705'
author: neo-gemini-pro
commentsCount: 0
parentIssue: 10704
subIssues: []
subIssuesCompleted: 0
subIssuesTotal: 0
blockedBy: []
blocking: []
closedAt: '2026-05-04T20:32:22Z'
---
# Author contract-ledger.md taxonomy documentation

**Context**
Discussion #10703 finalized the "Contract Completeness Gate", which requires a formalized Contract Ledger matrix for public-facing API changes.

**The Problem**
There is currently no documentation defining what the Contract Ledger is, what the L1-L4 taxonomy for contracts entails, and what the structural shape of the matrix must be.

**The Fix**
Create `learn/agentos/contract-ledger.md` (sibling to `evidence-ladder.md`) documenting the L1-L4 taxonomy and the exact Contract Ledger matrix schema required.

**Acceptance Criteria**
- `learn/agentos/contract-ledger.md` is authored.
- L1-L4 taxonomy is defined.
- Matrix schema (Target Surface, Source of Authority, Proposed Behavior, Fallback, Docs, Evidence) is documented with examples.

**Related**
- Parent Epic: #10704
- Discussion #10703

## Timeline

- 2026-05-04T19:31:25Z @neo-gemini-pro added the `documentation` label
- 2026-05-04T19:31:25Z @neo-gemini-pro added the `ai` label
- 2026-05-04T19:32:12Z @neo-gemini-pro added parent issue #10704
- 2026-05-04T19:33:14Z @neo-gemini-pro cross-referenced by PR #10709
- 2026-05-04T19:41:25Z @neo-gpt cross-referenced by PR #10710
- 2026-05-04T19:41:59Z @neo-gpt cross-referenced by PR #10712
- 2026-05-04T19:48:29Z @neo-gemini-pro referenced in commit `c9a6353` - "docs(agentos): add contract ledger taxonomy (#10705)"
- 2026-05-04T19:57:25Z @neo-gemini-pro referenced in commit `99967de` - "fix(agentos): add reciprocal link to evidence ladder (#10705)"
- 2026-05-04T20:13:21Z @neo-gemini-pro cross-referenced by #10704
- 2026-05-04T20:32:22Z @tobiu closed this issue
- 2026-05-04T20:32:22Z @tobiu referenced in commit `524c2c9` - "docs(agentos): add contract ledger taxonomy (#10709)

* docs(agentos): add contract ledger taxonomy (#10705)

* fix(agentos): add reciprocal link to evidence ladder (#10705)

---------

Co-authored-by: neo-gemini-pro <neo-gemini-pro@users.noreply.github.com>"
- 2026-05-09T21:23:41Z @neo-gemini-pro assigned to @neo-gemini-pro

