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exasol-jdbc-virtual-schemas

exasol-jdbc-virtual-schemas is a skill for Claude Code from exasol-labs/exasol-agent-skills. It costs 77 tokens per session (538 once invoked), scanned A, original, MIT.

A guide for connecting Exasol to external databases through JDBC virtual schemas, which let Exasol query outside data without copying it in.

In plain words
What is it for?
Selecting a JDBC adapter, creating virtual schemas, refreshing metadata, checking query plans, and diagnosing pushdown or connection issues.
Why use it?
It explains how to create, inspect, refresh, and troubleshoot read-only federated connections.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the exasol plugin — 18 skills, 2 commands shipped together

not rated 10repo changed 8d ago A scan 77 tokens original MIT

Good fit Selecting a JDBC adapter, creating virtual schemas, refreshing metadata, checking query plans, and diagnosing pushdown or connection issues.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas
View source ↗ exasol-labs/exasol-agent-skills
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.

Any agent
npx skills add exasol-labs/exasol-agent-skills --skill exasol-jdbc-virtual-schemas
Clone the repo
git clone --depth 1 https://github.com/exasol-labs/exasol-agent-skills

Made for: Claude Code.

Or install exasol, the plugin that ships this one along with the rest of its 18 skills, 2 commands.

Wrote 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.

agentmods badge for exasol-jdbc-virtual-schemas

README.md
[![agentmods](https://agentmods.dev/badge/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas/github.svg)](https://agentmods.dev/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas)
Your own site
<a href="https://agentmods.dev/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas"><img src="https://agentmods.dev/badge/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas/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.

agentmods 80×15 button for exasol-jdbc-virtual-schemas

Your own site · 80×15
<a href="https://agentmods.dev/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas"><img src="https://agentmods.dev/badge/skills/exasol-labs/exasol-agent-skills/exasol-jdbc-virtual-schemas.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 77 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 538 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00077 $0.00538
Opus 5 $0.00039 $0.00269
Sonnet 5 $0.00015 $0.00108
Haiku 4.5 $0.00008 $0.00054

Measured 8d ago against content hash 08873e8efdfd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

exasol-jdbc-virtual-schemas 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 8d 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.

plugins/exasol/skills/exasol-jdbc-virtual-schemas/SKILL.md · 34 lines

How it starts

The opening of the file, as written. The whole thing — 34 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Exasol JDBC Virtual Schemas Skill

Use this skill only for JDBC or database-source virtual schemas where Exasol queries external data in place.

Trigger when the user mentions JDBC virtual schema, database-source federation, query external database through a virtual schema, JDBC source adapter, supported JDBC dialect, or EXPLAIN VIRTUAL together with a JDBC/database-source virtual schema context.

Routing Algorithm

  1. Create or query a JDBC virtual schema

    • Trigger phrases: JDBC virtual schema, query external database, database-source virtual schema, JDBC source adapter
    • Load: references/jdbc-virtual-schemas.md

  2. Refresh, explain, or troubleshoot a JDBC virtual schema

    • Trigger phrases: EXPLAIN VIRTUAL with JDBC context, ALTER VIRTUAL SCHEMA with JDBC context, REFRESH TABLES, partial refresh, connection validation, pushdown
    • Load: references/jdbc-virtual-schemas.md

  3. Choose a JDBC adapter family

    • Trigger phrases: supported JDBC dialect, dedicated adapter, PostgreSQL virtual schema, Oracle virtual schema, SQL Server virtual schema, MySQL virtual schema, DB2 virtual schema
    • Load: references/jdbc-virtual-schemas.md

Notes

  • Use this skill for federated access through JDBC/database-source virtual schemas.
  • Use exasol-import or exasol-cloud-storage-extension when the user wants to efficiently bulk-copy data into Exasol instead of querying it in place.
  • Use exasol-export when the user wants to move Exasol data out to another system.
  • Use exasol-virtual-schema-adapter-development when no maintained JDBC dialect fits and the user needs custom dialect code, packaging, or adapter-side debugging.
  • Use exasol-extension-catalog when the source is not clearly JDBC/database-based or the user is still choosing between Virtual Schema, extension, connector, or integration families.
  • Use exasol-bucketfs when the task is specifically about uploading, listing, or removing adapter and driver JARs in BucketFS.

Read the full file on GitHub · 34 lines

Files

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.

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.

  1. 8d ago Changed · +25 tokens per session 08873e8efdfd
  2. 12d ago First seen · 34 lines · 52 tokens per session scan A 94bc7a5c804e

Subscribe to this mod's changes

exasol-jdbc-virtual-schemas is a skill published in the GitHub repository exasol-labs/exasol-agent-skills (10 stars, last pushed 8d ago), licensed MIT. It adds 77 tokens to every session and 538 once invoked, about $0.0004 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.

Backend and APIsClaude CodeDatabasesagentic-aiaiclaudeclaude-skillsclaude-skills-library
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