engineer-system-change SKILL.md skillA
engineer-system-change from bytedance/deer-flow is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bytedance/deer-flow/engineer-system-change@git:20260723.2af2fb5Pins git:20260723.2af2fb5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bytedance/deer-flow
- Path
.agent/skills/engineer-system-change/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260723.2af2fb5, committed Jul 23, 2026
- Size
- 9,846 bytes
- Repository stars
- 84,762
- License
- MIT
Evaluate and carry out non-trivial software-system changes from first principles. Use when assessing RFCs, issues, designs, features, refactors, migrations, dependency changes, or proposed fields, events, APIs, modules, and services whose need, consumers, system fit, validation, or rollback require scrutiny. Read the actual system, identify the concrete problem and named semantic consumers, choose the smallest sufficient solution, reject pseudo-requirements and speculative abstractions, and…
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
# Engineer System Change Treat every proposed change as a hypothesis about a real system, not as an implementation checklist. Establish whether the change should exist before designing or building it, then keep the solution and the process proportional to the risk. ## Preserve the Task Boundary - If asked only to assess, review, or plan, make no project or external-state changes. - If explicitly asked to implement, including after an assessment, pass the decision gates before editing and verify the result afterward. - Treat implementation permission as separate from permission to commit, push, deploy, publish, or update issues and pull requests. - If repository truth matters, inspect the current target revision and relevant discussion. Do not rely on a stale checkout, an RFC alone, or remembered architecture. - Separate verified facts, inferences, and unknowns. Do not turn missing evidence into a confident conclusion. ## Apply the Decision Gates ### 1. Ground the Problem - Trace the current user workflow, failure, or code path before proposing a solution. - State the undesirable observable behavior and the invariant or outcome that should replace it. …
Read the whole file at its exact version.
How to install
mdr add bytedance/deer-flow/engineer-system-change@sha256:3824ac0af2773631The line at the top of this page pins the label git:20260723.2af2fb5, 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.
[](https://markdownregistry.com/a/art_a3w5umdbxel6yswu)
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Versions
The registry has recorded 1 version of this file, committed on Jul 23, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9846 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
bytedance/deer-flow · 84,762 stars · license MIT · pushed 2026-10-31 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a3w5umdbxel6yswu GET https://markdownregistry.com/api/v1/resolve?ref=bytedance/deer-flow/engineer-system-change GET https://markdownregistry.com/api/v1/blob/3824ac0af2773631d4e2374e5ec8457540fb1c9546870920319ddc68a3228ca6
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.