is-gps-200n SKILL.md skillA
is-gps-200n from jgsystemsconsulting/jgs-se-knowledge-packs is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jgsystemsconsulting/jgs-se-knowledge-packs/is-gps-200n@git:20260817.ee762d0Pins git:20260817.ee762d0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jgsystemsconsulting/jgs-se-knowledge-packs
- Path
packs/is-gps-200n/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260817.ee762d0, committed Aug 17, 2026
- Size
- 5,186 bytes
- Repository stars
- 71
- License
- a license file GitHub does not identify
Knowledge base from IS-GPS-200 Rev N (NAVSTAR GPS Space Segment / Navigation User Segment Interfaces). Use as a worked ICD/IS exemplar: what an interface specification is, DIST-A and IRN/CCB change control, interface definition vs identification, composite-signal criteria patterns, NAV data as payload families, and time/definition hygiene. Covers Rev N synthesized notes only; does not transcribe Apps II–IV bit fields or PRN/Gold-code tables, and does not replace faa-std-025 preparation rules.
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
<!-- argument-hint: [topic, ICD pattern, or chapter number] --> # NAVSTAR GPS Space Segment / Navigation User Segment Interfaces (IS-GPS-200N) **Source**: IS-GPS-200 Rev N (cover 01-AUG-2022) (US Government work, public domain, DIST-A) | **Chapters**: 6 ## When to use Reach for this pack when you need a **worked Interface Specification / ICD** — how a live IS defines RF links, identifies codes and NAV payload, writes interface-criteria shalls, and keeps time/definition hygiene — complementary to `faa-std-025` (how to *prepare* an IRD/ICD, not a live ICD). **Prerequisites:** none — plain Markdown; no MCP server, API key, or licence tier needed at runtime. ## How to Use This Skill - **Without arguments** — load the core frameworks below. - **With a topic** — ask about ICD-as-contract, IRN/CCB, L1/L2 criteria, LNAV vs CNAV families, URA/CEI, or which appendix to open. - **With a chapter** — ask for `ch01` through `ch06`. Supporting files: `glossary.md`, `patterns.md`, `cheatsheet.md`. ## Core Frameworks & Mental Models ### Document-as-contract …
Read the whole file at its exact version.
How to install
mdr add jgsystemsconsulting/jgs-se-knowledge-packs/is-gps-200n@sha256:4e76b1b6af361fb9The line at the top of this page pins the label git:20260817.ee762d0, 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_jwhx44ijdarh2sd2)
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Versions
The registry has recorded 1 version of this file, committed on Aug 17, 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 (5186 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
jgsystemsconsulting/jgs-se-knowledge-packs · 71 stars · license a license file GitHub does not identify · pushed 2026-11-04 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_jwhx44ijdarh2sd2 GET https://markdownregistry.com/api/v1/resolve?ref=jgsystemsconsulting/jgs-se-knowledge-packs/is-gps-200n GET https://markdownregistry.com/api/v1/blob/4e76b1b6af361fb998141bcadaab600f1e16821d5f5ca689b9dfd4db4bf99b65
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.