mongodb SKILL.md skillA

mongodb from lynricsy/hyperskills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add lynricsy/hyperskills/mongodb@v2026.11.04

Pins v2026.11.04 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: lynricsy/hyperskills
Path: skills/mongodb/SKILL.md
Versions recorded: 5
Latest version: v2026.11.04, committed Nov 4, 2026
First version recorded: Sep 30, 2026
Size: 19,933 bytes
Repository stars: 25
License: MIT

Designs and tunes MongoDB document models, aggregation pipelines, indexes and sharding. Use when designing or reviewing a MongoDB collection or pipeline, explain shows COLLSCAN or an in-memory SORT, documents near the 16 MB limit, writes are lost or duplicated across a failover, picking a shard key, or adding Atlas Search or $vectorSearch.

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

# mongodb

## Scope

Covers MongoDB itself: document modelling and its migration path, CRUD and update
operators, the aggregation pipeline, indexes and `explain`, transactions and durability,
replication and sharding semantics, time-series collections, Atlas Search and vector
search, driver-side connection and cursor behaviour, and authentication, authorisation and
encryption at the database level.

The body is written against **MongoDB 8.0** (long-term support). Rules that need a later
release carry a gate such as `(8.3+)` or `(9.0+)`; every measurement quoted below was taken on
8.3.x. MongoDB 9.0 is generally available, but nothing here assumes it unless the rule is
gated.

Not covered:

- Relational schema design, SQL, and the tuning of a SQL engine's planner. Use the
  `postgres` skill.
- Key-value caching and eviction policy. Use the `redis` skill.
- A dedicated search platform — analyzer pipelines, cross-cluster replication, index
  lifecycle management. Use the `elasticsearch` skill. This skill covers Atlas Search and
  `$vectorSearch` because they are queried through the aggregation pipeline.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add lynricsy/hyperskills/mongodb@sha256:be3f68de99c68e24

The line at the top of this page pins the label v2026.11.04, 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.

Badge

[![mdr](https://markdownregistry.com/badge/art_qbqxnsbyxge4kdv5.svg)](https://markdownregistry.com/a/art_qbqxnsbyxge4kdv5)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Sep 30, 2026 and Nov 4, 2026, about one every 9 days.

version	committed	commit	size	audit
v2026.11.04 latest	2026-11-04	131ceca	19,933 B	A	view · diff
v2026.11.01	2026-11-01	5f9305d	19,674 B	A	view · diff
v2026.10.15	2026-10-15	c4cfcf2	19,674 B	A	view · diff
v2026.10.15	2026-10-15	3bf8add	19,666 B	A	view · diff
v2026.09.30	2026-09-30	f258826	19,666 B	A	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 (19933 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

lynricsy/hyperskills · 25 stars · license MIT · pushed 2026-11-04 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_qbqxnsbyxge4kdv5
GET https://markdownregistry.com/api/v1/resolve?ref=lynricsy/hyperskills/mongodb
GET https://markdownregistry.com/api/v1/blob/be3f68de99c68e2491341ba9f9e8f3ead2f24e2e9b015810055b0c66eea5ac97

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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