---
name: viral-rules
description: The platforms' rules that decide reach and money for a short video, each with its source and date, from get_platform_rules — length and format thresholds, ranking signals the platforms named, AI labels and what happens without them, originality and re-upload rules, monetization conditions and benchmark numbers with their formula, for TikTok, Instagram Reels, YouTube Shorts and long YouTube, X, Snapchat, Pinterest, LinkedIn, Threads and Facebook.
---
# What the platforms say

FlashBoards user skill, version 1.2.3 (2026-10-13).

On the board, read these guides with `list_skills` and `get_skill` when the assistant exposes them; otherwise use the hosted index through an available read-only retrieval tool. Use that runtime’s actual model discovery, current page context and guarded board actions for execution. Keep native readiness, approval and cost gates; do not claim a guide was read when retrieval is unavailable.

Read related guides with `get_skill({skillId:"<id>"})` or the [hosted index](https://pub-78da82d51ed14147ac554d38094b0c0b.r2.dev/user-skills/1.2.3/index.html). Reading a guide does not start or authorize a paid generation.

Read `viral` for the shared rules. **A rulebook, not legal advice and not a promise of reach. Every line is given with its source and date: keep them when you tell the person.**

Slots: {platform} · {ai} — none, photoreal, animation, avatar, voice, music · {content} — talking_head, cartoon, film_scene, ad_ugc, music_video, product, series, sensitive_topic.

## One call — free

`get_platform_rules` with:

- `platform`: one or several (aliases reels, shorts); none gives TikTok, Instagram and YouTube Shorts;
- `ai` and `content`: the rules written for that case come first. What was made here: Reels and Avatar → `avatar`; Cartoon → `animation`; Film scene and photoreal Animate → `photoreal`; a changed or cloned voice → `voice`; a generated song → `music`;
- `kind` narrows: `threshold` (length, format), `signal` (what the ranking looks at), `ai_label`, `ai_reach`, `originality`, `monetization`, `benchmark`, `tip`;
- the clip's facts (`durationSeconds`, `aspectRatio`, `heightPx`, `hasAudio`) run the checks: `ok: true` passes, `ok: false` with `severity: "block"` means the platform will not take it, `warn` and `info` are said as such.

A draft video goes to `viral-score`: it runs the same checks on the measured clip.

## How to tell it

1. **Answer the question first**, then the rule with its source and date in brackets: "Yes — an account led by an AI persona needs the AI-generated label, or it is not shown to people who don't follow it [instagram.com, 2026-08-31]."
2. **Three kinds of AI trouble** — say which one applies: undisclosed photoreal content (a label is required), mass-produced template content (reach or money cut), an AI persona standing in for a person (labels, or no recommendation at all). Animation is the mildest for labels and the strictest for "is this a template".
3. **A benchmark is quoted with its formula** ("engagements ÷ followers, median, brands"); never compare two numbers computed differently.
4. **A weak source is said as weak** (`weakSource: true`): a vendor's claim or press reports that disagree.
5. If `stale` is true, tell the person the rulebook's date and that the policy may have changed since.
6. At most 12 rules a platform come back; `moreRules` says how many more — narrow with `kind`, `ai` or `content` rather than reading them all out.

## Example run (reference only)

- The rulebook of 2026-10-12: policies changed on eight dates in 2026 (13.03, 30.04, 06.05, 07.05, 27.05, 31.07, 31.08, 01.10), the reason it is re-verified monthly.

## Execute through MCP or on the board

Use the person's FlashBoards account; never ask for a personal provider key or run the source's local scripts. Discover `get_account`, `list_generation_models` and the tools of this client first: a published guide does not prove a feature is deployed.

**Headless, no open board.** Quote with `estimate_generation_cost` (skill models: `estimate_skill_model`), then run `generate_image`, `generate_video`, `generate_audio` or `run_skill_model` with one stable `generationAttemptId` per logical attempt. Pass `maxCostUsd` only when the current operation and selected model support it; otherwise use the quoted cost and the person's explicit approval with the supported controls. Never silently ignore an unsupported spending cap; make one `get_generation` check after `retryAfterSeconds`. Pass the person's own results by `generationId`: images in `referenceGenerationIds`, `firstFrameUrl` and `endFrameUrl`, audio in `referenceAudioUrls` or `targetAudioUrl`, videos in `referenceVideoGenerationIds`. They are read on the server; signed result links do not work as public URLs. Every `generationId` a tool returns stays valid: a later read of the same result gives a different string, and both work. Film frames and gallery pictures go in by `previewHandle`: `referencePreviewHandles` of the generation tools, a `{previewHandle}` source of `arrange_images`, `crop_image` and `pad_image`, and `describe_media`. New files come from `show_media_upload_picker` as receipts. The person's character comes in as its sheet, by `generationId` or as an upload; there is no search by name. If the person names a character without the sheet, ask for it or make one with `character-sheet`; do not scan recent results for it. Free server steps: `trim_video`, `concat_videos`, `conform_video`, `replace_video_audio`, `extract_video_frame`, `extract_video_audio`, `detect_video_cuts`, `crop_image`, `pad_image`, `arrange_images`, `cut_audio_span`, `concat_audio_tracks`, `mix_audio_tracks`, `fit_audio_duration`, `add_audio_reverb`. Check every result with `describe_media` (a question about an image; `model`, `mode` and `sourceRange` only for a video) and `transcribe_media` for speech. Both checks are paid: `describe_media` costs a fraction of a cent for an image and about 2–4 ¢ for a short video (more for a long one), `transcribe_media` under 1 ¢ a minute — count the checks you plan in the price you name before the first paid step. `describe_media` is not reliable about sound: it misses effects mixed under music and can hear voices or instruments that are not there. Check speech with `transcribe_media` and ask the person to listen for effects and music. Never repay an uncertain submission; reuse an attempt ID only for the identical request. Make each new `requestId` or `generationAttemptId` unique, for example the task, the date and a short random suffix: an ID used before, even in another chat, replays that earlier request or answers `REQUEST_ID_CONFLICT`.

**On the board.** Inspect with `list_board_sessions` and `get_board_snapshot` and carry the same `sessionId` and a fresh `activeBoardId` as `expectedBoardId`. Native cards: `execute_board_action` (`listNativeModels`, `setModel`), `prepare_board_generation` with ordered board items or owned outputs, then one `generate_on_board` within the authorized budget. Board media tools: `list_media_tools` → `start_media_tool` → `get_media_tool_run`. Put headless results on a board with `add_media_to_board`.

Keep mandatory safety settings and the live limits of each model. Prices, timings, endpoints and "free retry" claims in the sources are historical, not FlashBoards contracts. If a step this guide needs is not available or is refused (a tool error, `audio_not_configured`, a missing model or input), keep the finished assets, tell the person which step is blocked and why, and ask how to go on. A single generation that ends `failed` is not a blocked step: submit it once more with a new `generationAttemptId` (reworded if it may have hit the content checker), and stop to ask only if it fails again. A failed attempt is not always refunded, so the retry may be paid again and `maxCostUsd` caps each request on its own: count both against the budget the person approved. Never swap in another route on your own: no image model redrawing a layout or a frame, no `describe_media` in place of the frames it should check, no clip generated only to take its sound, no picture drawn where the guide takes a film frame.

## Source and related guides

- The owner's viral radar (flashboards-apps `.claude/skills/viral-rules`, 2026-10-12); no Learn article yet.

Read: `viral`, `viral-score`, `viral-publish`. Source experiments and demo materials are historical; use the person's own approved media.
