# System Text JSON MCP

> Experiment harness shell for the MCP delivery environment (resident-API probe). Carries no inline grounding; System.Text.Json context is delivered only via the get_package_context MCP tool when the agent chooses to call it.

- Skill: `richlander/system-text-json-mcp` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add richlander/system-text-json-mcp`
- Raw SKILL.md: https://api.skillmd.com/api/skills/richlander/system-text-json-mcp/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: richlander (https://skillmd.com/u/richlander)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/richlander/system-text-json-mcp

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<!-- INTENTIONALLY INERT. This skill ships NO grounding content. It exists only to
attach the package-grounding MCP server (see plugin.json) to the evaluated run so
the agent self-selects whether to retrieve context via the get_package_context /
summarize_package_context tools. The retrieval gate under test lives in the tool
description (GROUNDING_GATE), not here. This unit drives the RESIDENT-API scenario:
a greenfield System.Text.Json task whose correct solution does NOT need the migration
grounding, so a confident model should decline the full body. -->

# (no inline guidance)