data-client-manager SKILL.md skillA

data-client-manager from reactive/data-client is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add reactive/data-client/data-client-manager@git:20261027.486429b

Pins git:20261027.486429b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
reactive/data-client
Path
.agents/skills/data-client-manager/SKILL.md
Versions recorded
5
Latest version
git:20261027.486429b, committed Oct 27, 2026
First version recorded
Oct 5, 2026
Size
10,659 bytes
Repository stars
2,040
License
Apache-2.0

Write @data-client Managers for app-wide side effects and real-time data such as websockets, SSE and polling: code that reacts to every request or to events from outside the app and updates the store. Use one instead of useEffect for behavior that belongs to the whole app, such as error toasts and reporting, logging and analytics, auth failures, refetching on focus or reconnect, and cross-tab sync.

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

# Guide: Using `@data-client` Managers for global side effects

[Managers](references/managers.md) are singletons that handle global side-effects. Kind of like useEffect() for the central data store.
They interface with the store using [Controller](references/Controller.md), and [redux middleware](https://redux.js.org/tutorials/fundamentals/part-4-store#middleware) is run in response to [actions](references/Actions.md).

## Single Responsibility

One concern per Manager; compose many small managers (e.g. transport, subscriptions, logging, auth) rather than one large one.

Every Manager defines a `middleware` property and a `cleanup()` method. A Manager with nothing to intercept passes actions through: `middleware: Middleware = controller => next => async action => next(action);`

## Use cases

Minimal working examples for each use case live in [references/managers.md](references/managers.md) (see the named section) unless another file is linked:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add reactive/data-client/data-client-manager@sha256:8801268217a2c5b0

The line at the top of this page pins the label git:20261027.486429b, 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.

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Versions

The registry has recorded 5 versions of this file, between Oct 5, 2026 and Oct 27, 2026, about one every 6 days.

versioncommittedcommitsizeaudit
git:20261027.486429b latest2026-10-27 486429b 10,659 BA view · diff
git:20261021.bb0dda62026-10-21 bb0dda6 10,657 BA view · diff
git:20261017.9abb86a2026-10-17 9abb86a 10,829 BA view · diff
git:20261005.1bb231b2026-10-05 1bb231b 10,334 BA view · diff
git:20261005.3f291a62026-10-05 3f291a6 10,308 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (10659 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

GitHub

reactive/data-client · 2,040 stars · license Apache-2.0 · pushed 2026-11-01 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_osw7m2ghbxzgsxcx
GET https://markdownregistry.com/api/v1/resolve?ref=reactive/data-client/data-client-manager
GET https://markdownregistry.com/api/v1/blob/8801268217a2c5b0e5393b1d943f3a0e74afc4aa2b4c3fb924bedacc212d7dbe

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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