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Set a tide alarm

set_tide_alarm
Destructive

Sets a tide alarm: it rings on the person's phone at a tide at the station nearest a place, or up to three hours before it: "low tide in Santa Cruz", "an hour before every high tide", "the next negative low tide", "every king tide". lowTide and highTide come about twice a day; negativeLow is a low tide below the chart's zero (the best tidepool days); kingTide is the year's highest tides. The tide is worked out from the station's tidal constants and rings for everyone at once. Once at the next one, or every one. People added to a friends alarm are notified. Returns the alarm, when it next rings, its link and a share picture.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "event": "<event>"
    },
    "name": "set_tide_alarm"
  }
}

Input Schema

NameRequiredDescriptionDefault
noteNoA note from the person about the alarm, in their words, shown under its trigger on the alarm's page and in the Daily drop. Up to 500 characters; an empty note clears it.
vibeNoThe feel of the alarm in a few words, and the kind of background and colour if the person named them: "fun poppy anime", "calm", "a simple bell", "hype for a token launch", "ocean waves, purple", "neon and chaotic". LFG picks a sound and a look from its library to match: a live, moving wallpaper when one fits, otherwise a drawn one. Wallpaper words given here replace the look's words; a colour given here makes it a plain gradient in that colour.
eventYeslowTide, highTide, negativeLow (a low tide below the zero, for tidepools) or kingTide (the year's highest tides).
everyNoTrue rings at every one ("every low tide"); false rings at the next one only.
placeNoA beach, harbour or coastal town, only when the person named one, "Santa Cruz". Left out, the person's own tide place is used.
reachNoWho can join: private (only the person), friends (people on its list, or with its link), public (anyone; listed in Discover).private
soundNoThe shelf of our library closest to the sound they asked for, read for what they mean: lo-fi or study beats is music/chill, "make it a vibe" might be music/chill, music/rnb or music/beats, hype me up is voices/hype_man, yelling at me is voices/drill_sergeant. "own" for one of their own uploads ("my song"). "soundcloud" when they asked for SoundCloud, or no shelf is close: a genre we have no shelf for (k-pop, drum and bass), or an artist or a song by name; put what to look for in song_search, and they play SoundCloud songs and tap one. Leave it out when they said nothing about the sound. A song from Apple Music, or a song or voiceover made for them: leave this out, make the alarm, and say they get it in the alarm's Studio, under its sound, after Arm it. Never say you will make one. The wallpaper follows the song unless one is asked for.
themeNoA theme or holiday: the alarm gets a song in its moods, a new alarm a title written for it, and a wallpaper dealt for it for variety, one of the theme's pictures, a GIF, a live wallpaper or a gradient. A vibe given as well shapes that ("cozy", "degen"); wallpaper words or a title given are kept. One of: birthday (Birthday), love (Love), night_out (Night out), shopping (Shopping), winter (Winter), christmas (Christmas), hanukkah (Hanukkah), diwali (Diwali), halloween (Halloween), thanksgiving (Thanksgiving), friendsgiving (Friendsgiving), new_years (New Year's Eve).
titleNoShort name for the alarm, "Tidepool morning". Write one that fits what they asked, fresh each time, 2 to 6 words (never just the time). When absent, LFG names it.
surpriseNoFor a friends alarm: keep it a surprise. People who join see a curtain instead of its title, picture, sound and note until it rings. Free on every plan.
link_modeNoFor a friends alarm, what its link does: open (anyone who opens the link rides along, the default) or approve (anyone else with the link asks first and the person says yes or no). Invited people walk straight in either way.
add_groupsNoFor a friends alarm: names of the person's friend groups whose members to let in, "Family". Members get a notification.
add_peopleNoFor a friends alarm: up to 20 people to let in, as usernames of the person's LFG friends or as email addresses. Friends get a notification; an email address with no LFG account gets an invitation. Any other username is refused.
gif_searchNo2 to 5 plain words to search GIFs with, written for this alarm, "solana pump celebration", "sleepy cat monday": used if the look dealt is a GIF, which has no words of its own. Fill it whenever you make an alarm.
look_wordsNoShort words of your own for the wallpaper, written for this alarm, "SOL TO THE MOON", "EXAM DAY", "BEACH BY 6": used if the look dealt is a live wallpaper or a gradient, in place of its own words. 2 to 4 words. Unlike wallpaper_words, the look is still dealt. Fill it whenever you make an alarm.
button_linkNo
song_searchNoWith "soundcloud": what to look for there, in their words, "k-pop", "fred again".
upload_nameNoWith "own": the name they gave the upload, "my dog picture". Left out, one of theirs is used.
words_colorNoColour of the words as hex, any colour, "#D7FF00".
hide_triggerNoNeeded with surprise, true or false: whether to also keep back when and why it rings, so people who join only know that it will. A surprise is not made until it is given.
snooze_timesNoHow many times it can be snoozed: 3, 10 or unlimited.
silent_snoozeNotrue to snooze without the spoken roast LFG plays by default.
offset_minutesNoMinutes before the tide: -60 is an hour before, 0 is at it. Up to three hours early.
snooze_minutesNoMinutes each snooze lasts: 5, 10, 15, 30 or 60.
wallpaper_kindNoOnly when they named a kind: a gradient, a live (moving) wallpaper, a gif or meme, or "own" for one of their own uploads ("my wallpaper", "the picture I uploaded"). Left out, LFG deals one of every kind in turn.
send_beacons_toNoA webhook the person got from the other side (a Discord channel's hook, a Zapier catch hook, their own agent's address): every beacon on this alarm is POSTed there as JSON, signed with the alarm's horn token. Public https only. An empty string stops it.
wallpaper_colorNoWallpaper background colour as hex, any colour, "#5B2BFF".
wallpaper_wordsNoWords drawn on the wallpaper, "WAKE UP"; a line break starts a new line. Up to 40 characters; it looks best as 1 to 4 short words, since the words are drawn as large as the square allows.
people_confirmedNoWhether the person has confirmed the people and groups being added. Nobody is added or told without it.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changed
    • addedInput schema / properties / gif_search
      Added value: +{
      +  "description": "2 to 5 plain words to search GIFs with, written for this alarm, \"solana pump celebration\", \"sleepy cat monday\": used if the look dealt is a GIF, which has no words of its own. Fill it whenever you make an alarm.",
      +  "maxLength": 60,
      +  "minLength": 2,
      +  "type": "string"
      +}
    • addedInput schema / properties / look_words
      Added value: +{
      +  "description": "Short words of your own for the wallpaper, written for this alarm, \"SOL TO THE MOON\", \"EXAM DAY\", \"BEACH BY 6\": used if the look dealt is a live wallpaper or a gradient, in place of its own words. 2 to 4 words. Unlike wallpaper_words, the look is still dealt. Fill it whenever you make an alarm.",
      +  "maxLength": 40,
      +  "minLength": 1,
      +  "type": "string"
      +}
    • changedInput schema / properties / title / description
      Previous value: -"Short name for the alarm, \"Tidepool morning\". When absent, LFG names it."New value: +"Short name for the alarm, \"Tidepool morning\". Write one that fits what they asked, fresh each time, 2 to 6 words (never just the time). When absent, LFG names it."
  2. Changed3 schema fields changed
    • addedInput schema / properties / song_search
      Added value: +{
      +  "description": "With \"soundcloud\": what to look for there, in their words, \"k-pop\", \"fred again\".",
      +  "maxLength": 120,
      +  "type": "string"
      +}
    • changedInput schema / properties / sound / description
      Previous value: -"The shelf of our library closest to the sound they asked for: lo-fi or study beats is music/chill or music/cozy, hype me up is voices/hype_man, yelling at me is voices/drill_sergeant. \"own\" for one of their own uploads (\"my song\"). Leave it out when they said nothing about the sound. A SoundCloud song: make the alarm, then find_soundcloud_song. A song from Apple Music, or a song or voiceover made for them: leave this out, make the alarm, and say they get it in the alarm's Studio, under its sound, after Arm it. Never say you will make one. The wallpaper follows the song unless one is asked for."New value: +"The shelf of our library closest to the sound they asked for, read for what they mean: lo-fi or study beats is music/chill, \"make it a vibe\" might be music/chill, music/rnb or music/beats, hype me up is voices/hype_man, yelling at me is voices/drill_sergeant. \"own\" for one of their own uploads (\"my song\"). \"soundcloud\" when they asked for SoundCloud, or no shelf is close: a genre we have no shelf for (k-pop, drum and bass), or an artist or a song by name; put what to look for in song_search, and they play SoundCloud songs and tap one. Leave it out when they said nothing about the sound. A song from Apple Music, or a song or voiceover made for them: leave this out, make the alarm, and say they get it in the alarm's Studio, under its sound, after Arm it. Never say you will make one. The wallpaper follows the song unless one is asked for."
    • changedInput schema / properties / sound / enum
      Previous value: -[
      -  "own",
      -  "music/afrobeats",
      -  "music/anime",
      -  "music/beats",
      -  "music/broadway",
      -  "music/chill",
      -  "music/cinematic",
      -  "music/classical",
      -  "music/country_folk",
      -  "music/cozy",
      -  "music/electronic",
      -  "music/happy_birthday",
      -  "music/heavenly",
      -  "music/hiphop",
      -  "music/jazzblues",
      -  "music/latin",
      -  "music/metal",
      -  "music/pop",
      -  "music/reggae",
      -  "music/rnb",
      -  "music/roasts",
      -  "music/rock",
      -  "music/video_game",
      -  "voices/android",
      -  "voices/anime",
      -  "voices/battle_cry",
      -  "voices/boss",
      -  "voices/breaking",
      -  "voices/bro",
      -  "voices/calm",
      -  "voices/chants",
      -  "voices/chaos",
      -  "voices/doomer",
      -  "voices/drama",
      -  "voices/drill_sergeant",
      -  "voices/gamer",
      -  "voices/hype_man",
      -  "voices/narrator",
      -  "voices/party",
      -  "voices/super_positive",
      -  "voices/the_butler",
      -  "voices/toxic_coach",
      -  "voices/warning",
      -  "voices/wtf",
      -  "voices/your_bestie",
      -  "tones/beeps",
      -  "tones/buzzers",
      -  "tones/chimes",
      -  "tones/footsteps",
      -  "tones/horns_drums",
      -  "tones/nature",
      -  "tones/powerups",
      -  "tones/sirens",
      -  "tones/winning",
      -  "themes/halloween",
      -  "themes/thanksgiving"
      -]New value: +[
      +  "own",
      +  "soundcloud",
      +  "music/afrobeats",
      +  "music/anime",
      +  "music/beats",
      +  "music/broadway",
      +  "music/chill",
      +  "music/cinematic",
      +  "music/classical",
      +  "music/country_folk",
      +  "music/cozy",
      +  "music/electronic",
      +  "music/happy_birthday",
      +  "music/heavenly",
      +  "music/hiphop",
      +  "music/jazzblues",
      +  "music/latin",
      +  "music/metal",
      +  "music/pop",
      +  "music/reggae",
      +  "music/rnb",
      +  "music/roasts",
      +  "music/rock",
      +  "music/video_game",
      +  "voices/android",
      +  "voices/anime",
      +  "voices/battle_cry",
      +  "voices/boss",
      +  "voices/breaking",
      +  "voices/bro",
      +  "voices/calm",
      +  "voices/chants",
      +  "voices/chaos",
      +  "voices/doomer",
      +  "voices/drama",
      +  "voices/drill_sergeant",
      +  "voices/gamer",
      +  "voices/hype_man",
      +  "voices/narrator",
      +  "voices/party",
      +  "voices/super_positive",
      +  "voices/the_butler",
      +  "voices/toxic_coach",
      +  "voices/warning",
      +  "voices/wtf",
      +  "voices/your_bestie",
      +  "tones/beeps",
      +  "tones/buzzers",
      +  "tones/chimes",
      +  "tones/footsteps",
      +  "tones/horns_drums",
      +  "tones/nature",
      +  "tones/powerups",
      +  "tones/sirens",
      +  "tones/winning",
      +  "themes/halloween",
      +  "themes/thanksgiving"
      +]
  3. Changed3 schema fields changed
    • addedInput schema / properties / sound
      Added value: +{
      +  "description": "The shelf of our library closest to the sound they asked for: lo-fi or study beats is music/chill or music/cozy, hype me up is voices/hype_man, yelling at me is voices/drill_sergeant. \"own\" for one of their own uploads (\"my song\"). Leave it out when they said nothing about the sound. A SoundCloud song: make the alarm, then find_soundcloud_song. A song from Apple Music, or a song or voiceover made for them: leave this out, make the alarm, and say they get it in the alarm's Studio, under its sound, after Arm it. Never say you will make one. The wallpaper follows the song unless one is asked for.",
      +  "enum": [
      +    "own",
      +    "music/afrobeats",
      +    "music/anime",
      +    "music/beats",
      +    "music/broadway",
      +    "music/chill",
      +    "music/cinematic",
      +    "music/classical",
      +    "music/country_folk",
      +    "music/cozy",
      +    "music/electronic",
      +    "music/happy_birthday",
      +    "music/heavenly",
      +    "music/hiphop",
      +    "music/jazzblues",
      +    "music/latin",
      +    "music/metal",
      +    "music/pop",
      +    "music/reggae",
      +    "music/rnb",
      +    "music/roasts",
      +    "music/rock",
      +    "music/video_game",
      +    "voices/android",
      +    "voices/anime",
      +    "voices/battle_cry",
      +    "voices/boss",
      +    "voices/breaking",
      +    "voices/bro",
      +    "voices/calm",
      +    "voices/chants",
      +    "voices/chaos",
      +    "voices/doomer",
      +    "voices/drama",
      +    "voices/drill_sergeant",
      +    "voices/gamer",
      +    "voices/hype_man",
      +    "voices/narrator",
      +    "voices/party",
      +    "voices/super_positive",
      +    "voices/the_butler",
      +    "voices/toxic_coach",
      +    "voices/warning",
      +    "voices/wtf",
      +    "voices/your_bestie",
      +    "tones/beeps",
      +    "tones/buzzers",
      +    "tones/chimes",
      +    "tones/footsteps",
      +    "tones/horns_drums",
      +    "tones/nature",
      +    "tones/powerups",
      +    "tones/sirens",
      +    "tones/winning",
      +    "themes/halloween",
      +    "themes/thanksgiving"
      +  ],
      +  "type": "string"
      +}
    • addedInput schema / properties / upload_name
      Added value: +{
      +  "description": "With \"own\": the name they gave the upload, \"my dog picture\". Left out, one of theirs is used.",
      +  "maxLength": 80,
      +  "type": "string"
      +}
    • addedInput schema / properties / wallpaper_kind
      Added value: +{
      +  "description": "Only when they named a kind: a gradient, a live (moving) wallpaper, a gif or meme, or \"own\" for one of their own uploads (\"my wallpaper\", \"the picture I uploaded\"). Left out, LFG deals one of every kind in turn.",
      +  "enum": [
      +    "gradient",
      +    "live",
      +    "gif",
      +    "own"
      +  ],
      +  "type": "string"
      +}
  4. Added

TDQS

A4.5/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Beyond the annotations (destructiveHint, openWorldHint, non-idempotent) the description discloses that the tide is computed from the station's tidal constants, that it rings for everyone at once, that people added to a friends alarm are notified, and what the call returns (the alarm, next ring time, link, share picture). That is substantive behavioral context an agent could not infer from the hints alone.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The core purpose and the offset window are front-loaded, followed by examples and the tide-type glossary; no sentence is filler. It runs long and the tide-type paragraph borders on restating the schema enum descriptions, but the density of useful detail justifies most of the length.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a 29-parameter tool with no output schema, the description covers the essential behavioral facts and explicitly states the return shape (alarm, next ring, link, share picture). The heavy per-parameter detail is handled by the 97%-covered schema, so what remains missing is minor — no mention of permissions, plan limits, or failure modes.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 97%, so the schema already carries most parameter meaning and the baseline is 3. The description adds real conceptual value for the required 'event' enum — explaining that lowTide and highTide occur about twice a day, that negativeLow means below chart zero and is the best tidepool day, and that kingTide is the year's highest — which helps an agent map vague user language onto the right enum value.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Opens with a specific verb and resource ('Sets a tide alarm') and immediately specifies the mechanism: it rings on the person's phone at the tide at the station nearest a place, or up to three hours before. The four user-phrasing examples and the tide-type glossary make it unambiguous that this is a tide-specific alarm rather than a generic one.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Gives clear usage context: natural-language triggers the person might say, the once-vs-every distinction ('Once at the next one, or every one'), and the friends-alarm notification behavior. It does not name alternatives (e.g. set_time_alarm or tide_times) or state when not to use it, so the routing decision is implied rather than explicit.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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