Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add rossumai/claude-marketplace --skill data-storage-referencegit clone --depth 1 https://github.com/rossumai/claude-marketplaceWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/rossumai/claude-marketplace/data-storage-reference)<a href="https://agentmods.dev/skills/rossumai/claude-marketplace/data-storage-reference"><img src="https://agentmods.dev/badge/skills/rossumai/claude-marketplace/data-storage-reference/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/rossumai/claude-marketplace/data-storage-reference"><img src="https://agentmods.dev/badge/skills/rossumai/claude-marketplace/data-storage-reference.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00053 | $0.00275 |
| Opus 5 | $0.00026 | $0.00138 |
| Sonnet 5 | $0.00011 | $0.00055 |
| Haiku 4.5 | $0.00005 | $0.00028 |
Grade A, and why
data-storage-reference scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Rossum Data Storage API Reference
This skill provides the complete REST API reference for Rossum's Data Storage service — a MongoDB-compatible data layer used by the Master Data Hub and available for direct API access. For complete details, see reference.md.
Use this knowledge when:
- Querying Data Storage collections via the REST API (find, aggregate)
- Performing CRUD operations on documents (insert, update, delete, replace)
- Running bulk write operations
- Managing collections (create, rename, drop)
- Managing indexes (create, drop, list) and Atlas Search indexes
- Understanding async operation patterns (202 responses, operation status polling)
- Debugging Data Storage API calls or understanding response schemas
- Building integrations that read/write data to Rossum's Data Storage
Note: The rossum-api MCP server provides convenient tool wrappers for some of these endpoints (aggregate, list collections, list indexes). Use the MCP tools for interactive exploration; use this reference when building configurations or understanding the full API surface.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 22 lines · 53 tokens per session scan A 942910b6dfbe
data-storage-reference is a skill published in the GitHub repository rossumai/claude-marketplace (5 stars, last pushed yesterday), licensed MIT. It adds 53 tokens to every session and 275 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other skills, from other repositories
dbx
DBX CLI for database schema exploration and read-only queries. When the user needs to list connections, explore tables, describe schemas, run queries, or generate AI-friendly schema context from DBX-managed databases. Do NOT use for write operations unless the user explicitly confirms with --allow-writes.
azure-mgmt-mongodbatlas-dotnet
Manage MongoDB Atlas Organizations as Azure ARM resources using Azure.ResourceManager.MongoDBAtlas SDK. Use when creating, updating, listing, or deleting MongoDB Atlas organizations through Azure Marketplace integration. This SDK manages the Azure-side organization resource, not Atlas clusters/databases directly.
nosqli
NoSQL injection — MongoDB operator injection ($ne, $gt, $where, $regex), CouchDB / Firebase / Redis attack patterns, auth bypass, blind extraction.
prisma-mongodb-upgrade
Decision and migration guide for Prisma ORM MongoDB projects on v6, which have no upgrade path to v7. Use when a MongoDB project asks about upgrading Prisma, when "upgrade to prisma 7" comes up in a project with provider = "mongodb", or when evaluating a move to Prisma Next. Triggers on "upgrade prisma mongodb"…
byted-volcengine-mongodb
An operations tool for Volcengine MongoDB, a document database that stores data in flexible, JSON-like records. It can query managed MongoDB instances and return details for further explanation or diagnosis.
dynamic
Fullstack development with bkend.ai BaaS — authentication, database, API integration. Triggers: fullstack, BaaS, login, signup, database, web app.