Synthesize a retro/8-bit game sound effect with the Bfxr engine and save it as a .wav file.

Presets: pickup_coin, laser_shoot, explosion, powerup, hit_hurt, jump, blip_select, random, tone. Pick the preset closest to what was asked for, then shape it with params:

• coin/pickup/collect -> pickup_coin; laser/shoot/zap -> laser_shoot; explosion/boom -> explosion

• powerup/level-up -> powerup; damage/hurt/impact -> hit_hurt; jump/hop -> jump; UI click/menu blip -> blip_select

• anything else -> start from tone (a plain sine) or random and set params by hand. Useful shaping params: frequency_start (pitch), frequency_slide (up/down glide), sustainTime + decayTime (length), sustainPunch (attack pop), lpFilterCutoff (muffle), bitCrush (lo-fi crunch), vibratoDepth/Speed, overtones (thicker).

Never set play or embed_audio, and never call play_sound — the user always plays sounds in the library UI. Prefer count=3..5, then report file paths. After writing, refresh the library in Cursor at http://localhost:4747. Each sound comes back with a bfxr.net permalink the user can open to tweak it by ear.

Nudge every parameter of an existing sound by a small random amount to produce close variations — the 'Mutate' button in Bfxr. Use this when the user likes a sound but wants it 'a bit different'. Give the source as a bfxr.net permalink, a path to a .wav generated by this server's sibling .bfxr file, a path to a .bfxr file, or a raw params object. Never set play or embed_audio, and never call play_sound — the user plays sounds in the library UI. After writing, refresh the library in Cursor at http://localhost:4747.

Decode a bfxr.net permalink or a .bfxr file into its parameters, optionally re-rendering it to a .wav. Use this to inspect or edit a sound the user shares.

Every Bfxr parameter with its range, default and what it does, plus the available presets and waveforms. Read this before hand-crafting a sound with params.

Do not call this. The user always plays sounds in the library web app. Only use if they explicitly ask you to play through the machine speakers.