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semantic-diff SKILL.md skillA

semantic-diff from echoyue-lp/echo-agent is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add echoyue-lp/echo-agent/semantic-diff@git:20260908.7e2cb50

Pins git:20260908.7e2cb50 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: echoyue-lp/echo-agent
Path: .agents/skills/semantic-diff/SKILL.md
Versions recorded: 1
Latest version: git:20260908.7e2cb50, committed Sep 8, 2026
Size: 2,110 bytes
Repository stars: 89
License: MIT

分析代码、配置、契约或工作树差异对既有语义基线的影响，计算影响闭包并标记需要重新审查的风险视角；仅在已有实际差异且存在语义基线时使用，不负责首次建库、编码前预检或泛化代码审查。.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# 语义增量分析

把普通代码差异转换成可验证的语义变化。输入可以是提交之间的差异，也可以是当前未提交工作树；
未提交变化必须同时记录基准提交、目标提交（如有）和未提交状态。

## 分析顺序

1. 调用 `semantic-contract`，取得当前合同版本；合同或基线不存在时转入 `semantic-discover`，不能继续增量写入。
2. 读取当前完整基线和对象引用，确认它们对应的源码快照；历史引用只按对应 Git 树预检。
3. 通过路径、符号、公共契约、序列化字段和调用关系定位直接受影响的能力图、边界、行为承诺、规则和证据。
4. 沿共享状态权威、生命周期、外部副作用、公共契约和证据关系扩展影响闭包。
5. 只让实际受影响的审查单元变为 `stale`；普通文件变化不能让全仓审查失效。
6. 重要变化无法映射时进入局部 `semantic-discover`，不能因未命中旧对象而判定“无语义影响”。

## 输出与限制

输出源码快照、语义变化、影响对象、失效视角、未映射变化和建议验证矩阵。保留人的期望，不把相反的实现
自动改写成新的预期。纯格式变化也必须先确认不会改变契约、解析、生成物或用户投影，再缩小影响范围。

这个 Skill 只分析并更新语义材料；修复问题记录使用独立的调试/构建流程。不要创建第二个差异解析器、
任务队列或状态权威。

输出验证矩阵后先执行对应机器验证。只有存在高风险失效单元、残余风险、新问题或事故关联时才调用
`semantic-audit`；其余情况直接调用 `semantic-verify` 检查本次材料更新。

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add echoyue-lp/echo-agent/semantic-diff@sha256:15efeebd9c82217e

The line at the top of this page pins the label git:20260908.7e2cb50, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_2ydkas53j46lipca.svg)](https://markdownregistry.com/a/art_2ydkas53j46lipca)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Sep 8, 2026.

version	committed	commit	size	audit
git:20260908.7e2cb50 latest	2026-09-08	7e2cb50	2,110 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (2110 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

echoyue-lp/echo-agent · 89 stars · license MIT · pushed 2026-10-31 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2ydkas53j46lipca
GET https://markdownregistry.com/api/v1/resolve?ref=echoyue-lp/echo-agent/semantic-diff
GET https://markdownregistry.com/api/v1/blob/15efeebd9c82217ef73e67c8a46618c21d71144aaffad8a50d248e497da0aa7b

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from echoyue-lp/echo-agent

coding-preflight SKILL.md skill

echoyue-lp/echo-agent · .agents/skills/coding-preflight/SKILL.md · 在 echo-agent 开始缺陷修复、功能开发、重构、契约或样式改动前，先完成复用搜索、架构分层、状态权威、修改边界和验证范围预检；当新需求可能导致重复代码、相近概念、公共接口漂移或风格分裂时使用，不负责首次全量语义建库。