feat(mcp): auto-register MCP servers into Claude + Codex from packages.yaml

.chezmoidata/packages.yaml

@@ -94,3 +94,11 @@ plugins:
     - google-drive@openai-curated
   codex_marketplaces:
     []
+
+# MCP servers, registered into BOTH Claude Code + Codex by
+# run_onchange_after_70 (each via its own `mcp add` CLI, idempotent).
+# Agent-agnostic: keyless remote (streamable-http) servers only — no secrets
+# in this repo. API-keyed servers stay per-machine (`<agent> mcp add` by hand).
+mcp:
+  - name: context7          # up-to-date library/framework docs (Upstash)
+    url: https://mcp.context7.com/mcp

.chezmoiscripts/run_onchange_after_70-install-plugins.sh.tmpl

@@ -1,5 +1,5 @@
 {{- /*
-  Install Claude Code + Codex plugins from .chezmoidata/packages.yaml.
+  Install Claude Code + Codex plugins + MCP servers from .chezmoidata/packages.yaml.
   Claude: `plugin marketplace add` (defensively re-adds claude-plugins-official
   in case claude was never launched interactively) + `plugin install`/`update`.
   Codex: only non-reserved marketplaces need `plugin marketplace add`; enable
@@ -38,6 +38,16 @@ if command -v claude >/dev/null 2>&1; then
     claude plugin update {{ . }} >/dev/null 2>&1 || true
 {{ end -}}
     claude plugin marketplace update >/dev/null 2>&1 || true
+
+    # MCP servers (shared list, registered per-agent). User scope = all
+    # projects. Idempotent: `mcp get` succeeds if already registered.
+{{ range .mcp -}}
+    if ! claude mcp get {{ .name | quote }} >/dev/null 2>&1; then
+        claude mcp add -s user --transport http {{ .name | quote }} {{ .url | quote }} >/dev/null 2>&1 \
+            && echo "claude mcp add {{ .name }}" \
+            || echo "claude mcp add {{ .name }} failed" >&2
+    fi
+{{ end -}}
 else
     echo "claude CLI not found, skipping Claude plugin install" >&2
 fi
@@ -52,6 +62,16 @@ if command -v codex >/dev/null 2>&1; then
     fi
 {{ end -}}
     codex plugin marketplace upgrade >/dev/null 2>&1 || true
+
+    # Same MCP server list as Claude, via codex's own CLI (writes ~/.codex/
+    # config.toml [mcp_servers]; survives modify_config.toml's merge).
+{{ range .mcp -}}
+    if ! codex mcp get {{ .name | quote }} >/dev/null 2>&1; then
+        codex mcp add {{ .name | quote }} --url {{ .url | quote }} >/dev/null 2>&1 \
+            && echo "codex mcp add {{ .name }}" \
+            || echo "codex mcp add {{ .name }} failed" >&2
+    fi
+{{ end -}}
 else
     echo "codex CLI not found, skipping Codex plugin install" >&2
 fi

AGENTS.md

@@ -29,8 +29,8 @@ sh -c "$(curl -fsLS get.chezmoi.io/lb)" -- init --apply vaintrub
 | `iterm/com.googlecode.iterm2.plist` | real iTerm2 binary plist (chezmoi-ignored). iTerm2 reads + writes here directly via `PrefsCustomFolder` (set by run_once_after script) |
 | `dot_claude/` | Claude Code: instructions, settings (modify_), statusline, agents, skills, rules |
 | `dot_codex/` | Codex CLI: AGENTS.md, config.toml (modify_), shared skills (symlink) |
-| `.chezmoidata/packages.yaml` | single source of truth for all packages (Mac brews/casks, Linux apt/dnf/npm) AND Claude/Codex plugin lists |
-| `.chezmoiscripts/` | install hooks (run_once_after_*, run_onchange_after_*). Per-OS subdirs: `darwin/`, `linux/`. Numerical prefix (50/70/99) controls ordering — 50 installs packages (+ mise tools + post-installs from lib), 70 installs Claude+Codex plugins, 99 prints first-apply hint |
+| `.chezmoidata/packages.yaml` | single source of truth for all packages (Mac brews/casks, Linux apt/dnf/npm), Claude/Codex plugin lists, AND MCP servers (`mcp:` — agent-agnostic, registered into both Claude + Codex; keyless remote only) |
+| `.chezmoiscripts/` | install hooks (run_once_after_*, run_onchange_after_*). Per-OS subdirs: `darwin/`, `linux/`. Numerical prefix (50/70/99) controls ordering — 50 installs packages (+ mise tools + post-installs from lib), 70 installs Claude+Codex plugins + registers MCP servers into both, 99 prints first-apply hint |
 | `hooks/` | hook scripts registered in `.chezmoi.toml.tmpl`. `ensure-prereqs.sh` runs BEFORE source-state read on every apply, installing minimum tools (git/zsh/vim/tmux/curl + brew on Mac) |
 | `.chezmoitemplates/` | shared template partials (base configs read by `modify_` scripts via `includeTemplate`, not applied to $HOME) |
 | `lib/` | shell libraries sourced by `.chezmoiscripts/*` wrappers via `{{ .chezmoi.sourceDir }}/lib/X.sh`. Pure POSIX `sh`, no template syntax. Chezmoi-ignored so it never deploys to $HOME — also makes the libraries `source`-able by bats unit tests with mocked externals. |