mcp-config: add mcp-sync to force a refresh, ignoring the TTL

The sync runs only at shell start and is throttled to MCP_SYNC_TTL (1h), so a
model added on the gateway can take up to an hour AND a new terminal before
opencode sees it. There was no way to say "fetch it now", so the recurring
symptom was "I added a model and it isn't showing up" -- with a healthy
gateway and a correctly-scoped key.

`mcp-sync` re-sources the hook with the throttle disabled and prints the
resulting model list, so it also answers "what does the client actually have?"
in one step.

README gains a section splitting the two failure modes: a model the gateway
returns but opencode lacks is a stale client; a model the gateway does not
return is a LiteLLM model_list / key-scoping problem.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

mcp-config/README.md

@@ -122,6 +122,30 @@ Models are different: they live on the gateway
 Add a folder under `skills/` and push to `main` — see `skills/README.md`.
 Verify with `opencode debug skill`.
 
+## "I added a model on the gateway and opencode doesn't see it"
+
+Almost always a stale local config, not a gateway or key problem. The sync runs
+**only at shell start** and is throttled to `MCP_SYNC_TTL` (1h), so a new model
+can take up to an hour *and* a new terminal to appear.
+
+Pull it immediately:
+
+```sh
+mcp-sync          # force a refresh now, ignoring the TTL; prints the model list
+```
+
+If the model still isn't listed, it isn't reaching your key — check the gateway,
+not the client:
+
+```sh
+curl -fsS -H "Authorization: Bearer $LITELLM_KEY" \
+  https://llm.covert-gpt.com/v1/models | jq -r '.data[].id'
+```
+
+Whatever that prints is exactly what `sync.sh` will deploy. A model present here
+but missing in opencode is a sync problem; a model missing here is a LiteLLM
+`model_list` or key-scoping problem.
+
 ## Notes / caveats
 
 - **Local-server precedence**: opencode merges with later-config-wins on key
@@ -130,4 +154,8 @@ Verify with `opencode debug skill`.
 - **Key rotation**: re-run `install.sh` (or edit `~/.config/mcp-sync/key`).
 - **Other clients**: this ships an opencode config. Claude Code / open-webui
   would need their own equivalent file + a parallel sync entry; not done yet.
-- **Throttle**: override with `MCP_SYNC_TTL=0` to force a pull every shell.
+- **Throttle**: `mcp-sync` forces one refresh; `MCP_SYNC_TTL=0` in the
+  environment makes every new shell pull.
+- **python3 is required** for model discovery. Without it `sync.sh` deploys the
+  base config verbatim, so the provider comes up with an EMPTY model list. It
+  warns when this happens; `bootstrap.sh` installs python3.

mcp-config/sync.sh

@@ -211,4 +211,31 @@ _mcp_sync_skills
 # the synced file so it is layered on top of the user's global opencode.json.
 [ -f "$MCP_SYNC_DEST" ] && export OPENCODE_CONFIG="$MCP_SYNC_DEST"
 
+# --- mcp-sync: force a refresh now, ignoring the TTL ------------------------
+# The automatic sync above runs ONLY at shell start and is throttled to
+# MCP_SYNC_TTL (1h). So a model or MCP server added on the gateway can take up
+# to an hour AND a new terminal before it shows up in opencode -- which reads
+# as "my new model isn't there" when in fact the gateway is fine and the local
+# config is just stale. Run `mcp-sync` to pull it immediately.
+#
+# Defined for the interactive shell (zsh/bash), which is the only place sync.sh
+# is sourced; the hyphen in the name is fine there.
+MCP_SYNC_SELF="${MCP_SYNC_SELF:-$HOME/.config/mcp-sync/sync.sh}"
+mcp-sync() {
+  [ -f "$MCP_SYNC_SELF" ] || {
+    printf 'mcp-sync: %s not found\n' "$MCP_SYNC_SELF" >&2; return 1
+  }
+  # Re-source with the throttle disabled; this redefines and re-runs everything.
+  # shellcheck disable=SC1090
+  MCP_SYNC_TTL=0 . "$MCP_SYNC_SELF" || return 1
+  command -v python3 >/dev/null 2>&1 || { printf 'mcp-sync: refreshed.\n' >&2; return 0; }
+  MCP_SYNC_PY_DEST="$MCP_SYNC_DEST" MCP_SYNC_PY_PROVIDER="$MCP_SYNC_PROVIDER" \
+  python3 - <<'PYEOF' >&2
+import json, os
+cfg = json.load(open(os.environ["MCP_SYNC_PY_DEST"]))
+models = cfg.get("provider", {}).get(os.environ["MCP_SYNC_PY_PROVIDER"], {}).get("models", {})
+print(f"mcp-sync: {len(models)} models -> {', '.join(models) or '(none)'}")
+PYEOF
+}
+
 unset -f _mcp_sync_export_key _mcp_sync_refresh _mcp_sync_skills 2>/dev/null || true