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 jxoesneon/Ciel --skill jvm-server-frameworksgit clone --depth 1 https://github.com/jxoesneon/CielWrote 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/jxoesneon/ciel/jvm-server-frameworks)<a href="https://agentmods.dev/skills/jxoesneon/ciel/jvm-server-frameworks"><img src="https://agentmods.dev/badge/skills/jxoesneon/ciel/jvm-server-frameworks.svg" alt="Measured on agentmods" 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 | $0.00024 | $0.00523 |
| Opus 5 | $0.00012 | $0.00262 |
| Sonnet 5 | $0.00005 | $0.00105 |
| Haiku 4.5 | $0.00002 | $0.00052 |
Grade A, and why
jvm-server-frameworks 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 4d 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
CIEL ADAPTATION: JVM Server Frameworks (Ktor & Exposed)
This skill formalizes the use of lightweight, DSL-driven frameworks on the JVM. It focuses on the Ktor + Exposed + Flyway stack.
Ktor Server Standards
- Plugin Discipline: Install
ContentNegotiation,Authentication, andStatusPagesin the central module. - Routing DSL: Group routes by resource (
/users,/orders). Extract logic to Services injected via Koin. - Validation: Use
require()blocks at the route boundary for fail-fast input checking. - Serialization: Standardize on
kotlinx.serializationwith custom serializers forInstant.
Exposed ORM (Persistence)
- Transaction Safety: All DB operations MUST run inside
newSuspendedTransaction. - DSL vs DAO:
- Use DSL style for complex joins and aggregations.
- Use DAO style for entity lifecycle and simple CRUD.
- JSONB: Use the
jsonbcolumn pattern withkotlinx.serializationfor unstructured metadata.
Database Lifecycle
- Migrations: Mandate Flyway for all schema changes. Versioned SQL scripts only.
- Connection Pooling: Use HikariCP with
TRANSACTION_READ_COMMITTEDisolation.
Anti-Patterns
- Implicit Nulls: Allowing
explicitNulls = truein serialization (leads to large, sparse JSON). - Blocking Transactions: Running long-running I/O or network calls inside a
transactionblock. - Manual Table Creation: Using
SchemaUtils.createin production instead of Flyway.
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.
- 4d ago First seen · 52 lines · 24 tokens per session scan A 5b3075c9d9f7
jvm-server-frameworks is a skill published in the GitHub repository jxoesneon/Ciel (1 stars, last pushed today), licensed Apache-2.0. It adds 24 tokens to every session and 523 once invoked, about $0.0001 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 2026-09-03.
Other skills, from other repositories
backend-patterns
Backend architecture patterns, API design, database optimization, and server-side best practices for Node.js, Express, and Next.js API routes.
supabase-cli
This skill should be used when user asks to "use supabase CLI", "supabase init", "supabase start", "run migrations", "deploy edge functions", "manage Supabase project", or works with the supabase command-line tool for local development and project management.
supabase-js
This skill should be used when user asks to "use supabase-js", "query Supabase database", "supabase auth", "supabase storage", "supabase realtime", "supabase edge functions", or works with the @supabase/supabase-js JavaScript/TypeScript SDK.
notion-tool
Notion integration tool for searching, reading, creating, and updating pages and databases via the API. Use when: editing Notion pages, adding database rows, or searching a workspace.
neo4j-getting-started-skill
Orchestrates zero-to-running-app in 8 stages — prerequisites → context → provision → model → load → explore → query → build. Each stage reads its own reference file. Supports HITL and fully autonomous operation. Use when starting a new Neo4j project from scratch, provisioning Aura, generating synthetic data, building…
neo4j-graphql-skill
Build and configure a GraphQL API backed by Neo4j using @neo4j/graphql v7 (current) or v5 (LTS). Covers Neo4jGraphQL constructor, getSchema(), assertIndexesAndConstraints(), type definitions with @node, @relationship (IN/OUT/UNDIRECTED), @cypher for custom resolvers, @authorization/@authentication for JWT/JWKS…