> ## Documentation Index
> Fetch the complete documentation index at: https://docs.memorycrystal.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Skill Suite

> Five cross-CLI skills the installer ships alongside the MCP config — workflow discipline on top of memory capability.

The universal installer ships a small skill suite next to the MCP configuration
for every host with a skill/command surface: Claude Code (`~/.claude/skills/`),
Codex CLI and Codex Desktop (`~/.codex/skills/`, the open agent-skills
standard), and OpenCode (`~/.config/opencode/commands/`). Hosts without a
surface are skipped automatically. Opt out with `--no-skills` (PowerShell:
`-NoSkills`).

| Skill                | What it does                                                                                                                                                                  |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `crystal-brief`      | Session bootstrap: verifies the MCP server responds, loads context, then applies the mandatory memory discipline (identical, by lockstep test, to the homepage agent prompt). |
| `crystal-kb`         | Knowledge-base workflows: import with mandatory `dedupeKey` (one key = one chunk), enumerate, edit, empty-in-place, agent access, and reading per-agent priorities.           |
| `crystal-architect`  | Documents a codebase into a re-runnable `Architecture: <repo>` knowledge base with deterministic `arch:*` dedupeKeys — refreshes in place, never duplicates.                  |
| `crystal-hygiene`    | Conversational-memory cleanup under the freshness policy: every fact is timeless, dated, or a pointer; contradictions resolve via `crystal_supersede`, never silent deletion. |
| `crystal-checkpoint` | Milestone ritual: checkpoint + a durable summary memory, verified.                                                                                                            |

Skills only ever call Memory Crystal's MCP tools — they never edit agent
config files. If the tools are missing, every skill stops and points you at
the installer.

## Current endpoints

The canonical API base is `https://convex.memorycrystal.ai` (MCP:
`https://api.memorycrystal.ai/mcp`). Legacy Convex-generated hosts —
`rightful-mockingbird-389.convex.cloud`/`.convex.site` and earlier — were
decommissioned on 2026-07-14 and return errors for every request. The
installer migrates configs it manages automatically; if an agent reports
500s from a legacy host, re-run the installer.