A plugin that lets Claude query and change SQL or MongoDB databases through GraphJin, a tool that turns GraphQL requests into database operations.

Querying database records and making database changes from Claude through GraphJin's MCP server.

It gives Claude a schema-aware way to work with database data while reducing the need to write database-specific queries directly.

graphjin — Plugin by dosco

Install

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.

Claude Code

/plugin marketplace add dosco/graphjin

agentmods

npx agentmods add plugins/dosco/graphjin/marketplace

Clone the repo

git clone --depth 1 https://github.com/dosco/graphjin

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

graphjin 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 yesterday.

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.

.claude-plugin/marketplace.json · 20 lines

What it actually says

{
  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
  "name": "graphjin",
  "metadata": {
    "description": "GraphJin is a GraphQL-to-database query compiler that lets Claude safely query and mutate SQL and MongoDB through MCP tools."
  },
  "owner": {
    "name": "@dosco"
  },
  "plugins": [
    {
      "name": "graphjin-mcp",
      "description": "Connect Claude to your SQL or MongoDB databases using GraphJin's schema-aware MCP server.",
      "category": "development",
      "source": "./claude-plugins/graphjin-mcp",
      "homepage": "https://github.com/dosco/graphjin/tree/master/claude-plugins/graphjin-mcp"
    }
  ]
}

Changes

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.

yesterday First seen · 20 lines scan A 3866bd01c640

Subscribe to this mod's changes

graphjin is a plugin published in the GitHub repository dosco/graphjin (3,153 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-30.

Backend and APIs Databases cloud-native graphql mysql postgresql sql

graphjin

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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