api-database-mongodb SKILL.md skillA
api-database-mongodb from agents-inc/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agents-inc/skills/api-database-mongodb@git:20261016.afd0e14Pins git:20261016.afd0e14 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agents-inc/skills
- Path
src/skills/api-database-mongodb/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261016.afd0e14, committed Oct 16, 2026
- First version recorded
- Mar 16, 2026
- Size
- 24,350 bytes
- Repository stars
- 26
- License
- MIT
Native MongoDB driver (the mongodb npm package) - MongoClient lifecycle, typed collections, CRUD result shapes, cursors, aggregation pipelines, index design, transactions.
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 Native Driver Patterns
> **Quick Guide:** Talk to MongoDB through the official `mongodb` driver with no schema layer in between. Create ONE `MongoClient` per process and reuse it -- it owns the connection pool. Type collections with a generic: `db.collection<UserDoc>("users")`. Write operations return acknowledgements, never documents. `find()` returns a lazy cursor; stream it with `for await` instead of `toArray()` for anything unbounded. Put `$match` first in every pipeline so it can use an index. Verify indexes with `explain("executionStats")` rather than assuming. Transactions need a replica set, a session on every operation, and a callback that can safely run twice.
---
<critical_requirements>
## CRITICAL: Before Using This Skill
**(You MUST create exactly ONE `MongoClient` per process and reuse it -- the client owns a connection pool, so constructing one per request opens a new pool per request and exhausts the server's connection limit)**
**(You MUST pass `{ session }` to EVERY operation inside a transaction -- an operation without it silently runs outside the transaction and is not rolled back)**
…Read the whole file at its exact version.
How to install
mdr add agents-inc/skills/api-database-mongodb@sha256:bc7a0e60b95f6f6eThe line at the top of this page pins the label git:20261016.afd0e14, 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_sxkxqard53mx5ze7)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Mar 16, 2026 and Oct 16, 2026, about one every 43 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261016.afd0e14 latest | 2026-10-16 | afd0e14 | 24,350 B | A | view · diff |
| git:20260809.97cd49d | 2026-08-09 | 97cd49d | 24,626 B | A | view · diff |
| git:20260328.47861b7 | 2026-03-28 | 47861b7 | 11,812 B | A | view · diff |
| git:20260320.ead8e05 | 2026-03-20 | ead8e05 | 17,897 B | A | view · diff |
| git:20260316.5c62783 | 2026-03-16 | 5c62783 | 17,684 B | A | view · diff |
| git:20260316.07d9b29 | 2026-03-16 | 07d9b29 | 17,326 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 (24350 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
agents-inc/skills · 26 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_sxkxqard53mx5ze7 GET https://markdownregistry.com/api/v1/resolve?ref=agents-inc/skills/api-database-mongodb GET https://markdownregistry.com/api/v1/blob/bc7a0e60b95f6f6e5bc9f2122e3fe78c9eb42183c3a5f07536d6bf61e47da252
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.