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Get Started Free →Save on the preset editor performs local structural validation only — it never makes a live provider/model network call. Real availability diagnosis is owned by /doctor and actual runtime execution.
.claude/skills/lingtai-ai-preset-skill-op-availability-save-gate/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-15 | ✗→✓ | ▲ Improved | -51% | 0% |
| case-01 | ✗→✓ | ▲ Improved | -18% | 0% |
| case-02 | ✗→✓ | ▲ Improved | 10% | 0% |
| case-09 | ✗→✓ | ▲ Improved | -63% | 0% |
| case-03 | ✗→✓ | ▲ Improved | -20% | 0% |
Evidence: tui/internal/tui/preset_editor.go's commit().
commit() runs the preset's structural Validate() and, if it passes, saves immediately. There is no live HTTP call, no pending/checking state, and no per-tuple credential fingerprinting gate on Save — for any provider, including Codex, Codex-pool, and API-key providers like DeepSeek. See reference/operations/saved-presets/SKILL.md for what Validate() checks.
An earlier revision of this editor ran a real live provider/model call on every Save and hard-blocked the save on a non-2xx response (a "real-availability gate"). That gate false-positived broadly — every provider, including working Codex and API-key configurations, could be rejected by transient network/provider conditions unrelated to whether the configuration was actually usable — and was removed (2026-07-23, reported by Jason). It has not been replaced by another probe, whitelist, or retry loop.
/doctor (tui/internal/tui/doctor.go's probeLLM) and real runtime execution remain the places that diagnose whether a provider/model is actually reachable. Save does not duplicate that check.
For structural Validate() and the Load/Save/Delete file contract, see reference/operations/saved-presets/SKILL.md. For what happens after a successful save — activation and /refresh — see reference/operations/activation-session-refresh/SKILL.md.
Other measured skills in the registry, with their headline benchmark lift.