system-design-communication skillA
system-design-communication is agent-read markdown (skill) from hoangnguyen0403/agent-skills-standard: 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..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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 - The caller needs the answer to proceed -> synchronous call with a timeout and a fallback. …
Read the whole file at its exact version.
How to install
mdr add hoangnguyen0403/agent-skills-standard/system-design-communication@git:20260830.00e03f4mdr add hoangnguyen0403/agent-skills-standard/system-design-communication@sha256:3d035b641496b7d7Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_57fxi7uu5rnyezlf)
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Versions
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 (3573 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 · 571 stars · license MIT · pushed 2026-09-24 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_57fxi7uu5rnyezlf GET https://markdownregistry.com/api/v1/resolve?ref=hoangnguyen0403/agent-skills-standard/system-design-communication GET https://markdownregistry.com/api/v1/blob/3d035b641496b7d7c6ac372da93bf74f0afbe3feeffaba01748c9872c535a40b
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