> Discover all available Postdom documentation from the machine-readable index: https://postdom.com/llms.txt

Destination · publishing reference

# Snapchat publishing reference for Postdom

This Snapchat publishing reference explains the Public Profile prerequisite, current story surface, Spotlight-sourced limits, omitted settings, and outcome boundary.

[Create a workspace](https://app.postdom.com/signup) [Read publish_video](https://postdom.com/docs/tools/publish-video)

Human authorization boundary

## Snapchat publishing reference connection requirements

A human completes the destination connection. The agent receives the resulting account ID—not the social credential—and supplies that exact account ID to `publish_video`.

`connection`

OAuth

`prerequisite`

Snapchat needs a Public Profile on your account - you will choose one while connecting. Regular accounts cannot publish.

`current source surface`

story

Configured output

## What Postdom sends to Snapchat

The public tool accepts product-level publishing fields. Postdom builds destination settings after validation; callers cannot smuggle an undocumented settings object through `publish_video`.

**`settings`** — **omitted**  Postdom does not send locale or skip_save_to_profile.

Postdom sends no Snapchat-specific settings. The current core surface is story, so this page does not claim every request becomes a live Spotlight.

_CURRENT SOURCE ADAPTER OUTPUT · NOT TOOL INPUT_

```
{
  "platform": "snapchat",
  "settings": {}
}
```

Enforced, documented, or unknown

## Snapchat publishing limits

Every row comes from the current `@postdom/core` registry. “Postdom enforced” means the source contract checks the fact. A recommendation, documented-but-unenforced fact, or unpublished value must not be presented as a passed validation.

 Postdom enforced

### caption max chars

**4000**

Postdom contract · verified 2026-08-21T00:00:00.000Z

Evidence reference retained in the core registry.

 Postdom enforced

### media max bytes

**524,288,000 bytes**

Postdom contract · verified 2026-08-21T00:00:00.000Z

Evidence reference retained in the core registry.

 Postdom enforced

### video max seconds

**600**

Postdom contract · verified 2026-08-21T00:00:00.000Z

Evidence reference retained in the core registry.

 Postdom enforced

### video mime types

**video/mp4, video/quicktime**

Postdom contract · verified 2026-08-21T00:00:00.000Z

Evidence reference retained in the core registry.

 Postdom enforced

### image mime types

**image/jpeg, image/png, image/gif, image/webp**

Postdom contract · verified 2026-08-21T00:00:00.000Z

Evidence reference retained in the core registry.

 Postdom enforced

### public profile spotlight description

**160**

Unit: characters · Field: description · Scope: Public Profile API - Spotlight

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Postdom enforced

### video min seconds

**6**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Postdom enforced

### video max seconds

**60**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Postdom enforced

### video mime types

**video/mp4**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Postdom enforced

### resolution min pixels

**width: 540; height: 960**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Not published

### aspect ratio

**Not published**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Not published

### resolution max pixels

**Not published**

Platform evidence · verified 2026-09-02T00:00:00.000Z

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

 Documented, not enforced

### video max bytes

**1,000,000,000 bytes**

Platform evidence · verified 2026-09-02T00:00:00.000Z

Qualification

Snap's own figure - "A file of upto 1 GB can be uploaded through the multipart upload API" - but scoped to the upload mechanism rather than to Spotlight, and an order of magnitude above Postdom's 500 MB global cap. No request Postdom accepts can reach it, so a gate here would be unreachable and a violation test for it would pass on the global rule while proving nothing about Snapchat. Decimal rather than binary: the source says "1 GB" in prose with no convention stated, and the decimal reading is the smaller one, which is the safe error for a maximum. Reclassify the day the global cap rises above it.

[Official source](https://developers.snap.com/api/marketing-api/Public-Profile-API/ProfileAssetManagement)

Result boundary

## How to verify the Snapchat outcome

The limit evidence comes from Snapchat's Spotlight API, while Postdom's current source surface remains story. No live Spotlight, locale choice, or saved-profile result has been observed here.

### Never collapse a workflow state into success

Store the Postdom post ID, read the exact destination state with `get_publish`, and preserve a missing public URL, approval state, terminal refusal, or provider error exactly as returned.

Nine modeled fields

## Snapchat metric availability

The matrix records evidence states, not guaranteed live values. Unverified and never remain null with a reason; zero remains a measured zero.

| Metric | State | Baseline | Value behavior |
| --- | --- | --- | --- |
| views Views Required view count in a normalized snapshot. | unverified | Not verified | Always null with an explicit reason. |
| likes Likes Required like count in a normalized snapshot. | unverified | Not verified | Always null with an explicit reason. |
| comments Comments Required comment count in a normalized snapshot. | unverified | Not verified | Always null with an explicit reason. |
| shares Shares Required share count in a normalized snapshot. | unverified | Not verified | Always null with an explicit reason. |
| saves Saves Nullable saved or favorited count. | unverified | Not verified | Always null with an explicit reason. |
| watch_time_s Watch time Nullable total watch time in seconds. | unverified | Not verified | Always null with an explicit reason. |
| avg_watch_pct Average watch Nullable average watched percentage. | unverified | Not verified | Always null with an explicit reason. |
| completion_pct Completion Nullable completion percentage. | unverified | Not verified | Always null with an explicit reason. |
| follower_delta Follower delta Nullable follower-change field. | unverified | Not verified | Always null with an explicit reason. |

Verification scope

## Snapchat evidence boundary

### Contract evidence is not an observed publication

These pages describe source-backed product contracts. They do not represent an authenticated end-to-end publication or analytics test.

Inspect the connected tool schema before acting. Current source may be ahead of the separately published `@postdom/mcp` helper.

Use the contract

## Publish with explicit authority and outcomes

Create a workspace, connect an eligible account, and let the agent use only the fields exposed by the connected schema.

[Start free](https://app.postdom.com/signup) [Read outcome states](https://postdom.com/docs/tools/get-publish)

 VERIFIED · 23 SEPTEMBER 2026  **Current source adapter · Core evidence registries · Modeled metric availability**

Private identifiers and unverified publication claims are excluded. External links are limited to first-party platform sources.