context-fundamentals SKILL.md skillA
context-fundamentals from foryourhealth111-pixel/vibe-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add foryourhealth111-pixel/vibe-skills/context-fundamentals@git:20260226.1632f40Pins git:20260226.1632f40 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- foryourhealth111-pixel/vibe-skills
- Path
bundled/skills/context-fundamentals/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260226.1632f40, committed Feb 26, 2026
- Size
- 12,137 bytes
- Repository stars
- 3,758
- License
- Apache-2.0
This skill should be used when the user asks to "understand context", "explain context windows", "design agent architecture", "debug context issues", "optimize context usage", or discusses context components, attention mechanics, progressive disclosure, or context budgeting. Provides foundational understanding of context engineering for AI agent systems.
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
# Context Engineering Fundamentals Context is the complete state available to a language model at inference time. It includes everything the model can attend to when generating responses: system instructions, tool definitions, retrieved documents, message history, and tool outputs. Understanding context fundamentals is prerequisite to effective context engineering. ## When to Activate Activate this skill when: - Designing new agent systems or modifying existing architectures - Debugging unexpected agent behavior that may relate to context - Optimizing context usage to reduce token costs or improve performance - Onboarding new team members to context engineering concepts - Reviewing context-related design decisions ## Core Concepts Context comprises several distinct components, each with different characteristics and constraints. The attention mechanism creates a finite budget that constrains effective context usage. Progressive disclosure manages this constraint by loading information only as needed. The engineering discipline is curating the smallest high-signal token set that achieves desired outcomes. ## Detailed Topics ### The Anatomy of Context **System Prompts** …
Read the whole file at its exact version.
How to install
mdr add foryourhealth111-pixel/vibe-skills/context-fundamentals@sha256:4f6b700280f63966The line at the top of this page pins the label git:20260226.1632f40, 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_6ayixgofvfbqht6s)
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Versions
The registry has recorded 1 version of this file, committed on Feb 26, 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 (12137 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
foryourhealth111-pixel/vibe-skills · 3,758 stars · license Apache-2.0 · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6ayixgofvfbqht6s GET https://markdownregistry.com/api/v1/resolve?ref=foryourhealth111-pixel/vibe-skills/context-fundamentals GET https://markdownregistry.com/api/v1/blob/4f6b700280f6396661d8f94a764a9e8153dbfa81a037b7cbd0bf9d8b98de8168
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.
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