system-design-communication SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
system-design-communication from hoangnguyen0403/agent-skills-standard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add hoangnguyen0403/agent-skills-standard/system-design-communication@git:20261021.8da3953Pins git:20261021.8da3953 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- hoangnguyen0403/agent-skills-standard
- Path
.agents/skills/system-design/system-design-communication/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261021.8da3953, committed Oct 21, 2026
- First version recorded
- Aug 30, 2026
- Size
- 3,863 bytes
- Repository stars
- 583
- License
- MIT
Select how services talk: REST, gRPC, GraphQL, WebSocket, SSE, or webhook per hop, sync versus async per flow, service discovery mode, and DNS/edge routing. Use when choosing a protocol or API paradigm; defer REST contract detail (status codes, pagination, OpenAPI) to common-api-design.
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
# Communication Selection ## **Priority: P1 (HIGH)** Choose the paradigm per hop from the constraint, not from familiarity. One flow may legitimately use three. ## Paradigm Table | Constraint observed | Paradigm | Cost accepted | | --- | --- | --- | | Resource CRUD for broad, unknown clients; HTTP caching wanted | REST | Over/under-fetching; N round trips for aggregates | | Internal service-to-service, low latency, streaming, schema-first | gRPC | Browser needs a proxy; L7 balancers need HTTP/2 awareness | | One client aggregates many sources with client-shaped responses | GraphQL | Query-cost limits and N+1 resolvers become your problem | | Bidirectional real-time (chat, collaboration, gaming) | WebSocket | Stateful connections; LB affinity; reconnect protocol | | Server push only (feeds, progress, notifications) | SSE | One direction; plain HTTP, auto-reconnect built in | | Cross-organization async callback | Webhook | Receiver retries, signature verification, idempotency required | ## Sync vs Async per Flow …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/system-design-communication@sha256:032fb36ac8074322The line at the top of this page pins the label git:20261021.8da3953, 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_oqvva4cnxslmjsiv)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 30, 2026 and Oct 21, 2026, about one every 52 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261021.8da3953 latest | 2026-10-21 | 8da3953 | 3,863 B | A | view · diff |
| git:20260830.00e03f4 | 2026-08-30 | 00e03f4 | 3,573 B | A | view |
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 (3863 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
hoangnguyen0403/agent-skills-standard · 583 stars · license MIT · pushed 2026-11-07 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_oqvva4cnxslmjsiv GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/system-design-communication GET https://markdownregistry.com/api/v1/blob/032fb36ac8074322c84f2f00469ca77c5f9b0a46fc83b9357dfd11f846341ccf
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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