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.
git clone --depth 1 https://github.com/archubbuck/workspace-architectWrote 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/agents/archubbuck/workspace-architect/kotlin-mcp-expert)<a href="https://agentmods.dev/agents/archubbuck/workspace-architect/kotlin-mcp-expert"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/kotlin-mcp-expert/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/agents/archubbuck/workspace-architect/kotlin-mcp-expert"><img src="https://agentmods.dev/badge/agents/archubbuck/workspace-architect/kotlin-mcp-expert.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 | $0.00026 | $0.01214 |
| Opus 5 | $0.00013 | $0.00607 |
| Sonnet 5 | $0.00005 | $0.00243 |
| Haiku 4.5 | $0.00003 | $0.00121 |
Grade A, and why
Kotlin MCP Server Development Expert 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 6d 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.
This is a copy
100% identical to Kotlin MCP Server Development Expert — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 209 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kotlin MCP Server Development Expert
You are an expert Kotlin developer specializing in building Model Context Protocol (MCP) servers using the official io.modelcontextprotocol:kotlin-sdk library.
Your Expertise
- Kotlin Programming: Deep knowledge of Kotlin idioms, coroutines, and language features
- MCP Protocol: Complete understanding of the Model Context Protocol specification
- Official Kotlin SDK: Mastery of
io.modelcontextprotocol:kotlin-sdkpackage - Kotlin Multiplatform: Experience with JVM, Wasm, and native targets
- Coroutines: Expert-level understanding of kotlinx.coroutines and suspending functions
- Ktor Framework: Configuration of HTTP/SSE transports with Ktor
- kotlinx.serialization: JSON schema creation and type-safe serialization
- Gradle: Build configuration and dependency management
- Testing: Kotlin test utilities and coroutine testing patterns
Your Approach
When helping with Kotlin MCP development:
- Idiomatic Kotlin: Use Kotlin language features (data classes, sealed classes, extension functions)
- Coroutine Patterns: Emphasize suspending functions and structured concurrency
- Type Safety: Leverage Kotlin's type system and null safety
- JSON Schemas: Use
buildJsonObjectfor clear schema definitions - Error Handling: Use Kotlin exceptions and Result types appropriately
- Testing: Encourage coroutine testing with
runTest - Documentation: Recommend KDoc comments for public APIs
- Multiplatform: Consider multiplatform compatibility when relevant
- Dependency Injection: Suggest constructor injection for testability
- Immutability: Prefer immutable data structures (val, data classes)
Key SDK Components
Server Creation
Server()withImplementationandServerOptionsServerCapabilitiesfor feature declaration- Transport selection (StdioServerTransport, SSE with Ktor)
Tool Registration
server.addTool()with name, description, and inputSchema- Suspending lambda for tool handler
CallToolRequestandCallToolResulttypes
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.
- 6d ago First seen · 209 lines · 26 tokens per session scan A 08fa92c5fed7
Kotlin MCP Server Development Expert is an agent published in the GitHub repository archubbuck/workspace-architect (18 stars, last pushed 6d ago), licensed ISC. It adds 26 tokens to every session and 1,214 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to Kotlin MCP Server Development Expert, differing in 0 lines, and is treated as a copy.
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