The Buffer API, and where it stops

It is an API onto a Buffer account

This is the whole thing, and it is a design choice rather than a shortcoming. Buffer's API lets you do programmatically what you could do in the Buffer UI: add posts to the queue, read your channels, pull metrics on what you published. It extends your workspace. If you are automating your own team's publishing, wiring Buffer into an internal tool, or building a personal workflow, that is a good fit and you should use it.

It becomes the wrong tool at one specific moment: when the accounts you need to post to belong to your customers rather than to you. Say you are building a CRM with social scheduling, an agency dashboard, or an AI marketing tool, and each of your customers wants to connect their own Instagram and LinkedIn. Through Buffer that means one of two things.

Either every customer holds their own Buffer subscription and authorizes your app against it - which makes a third-party vendor something your customers have to buy, manage and see the branding of, right in the middle of your onboarding. Or every customer's channels get funnelled into your Buffer account. That second path collapses on two fronts at once.

Pricing. Buffer meters per connected channel per month. Two hundred customers with three channels each is six hundred channels. Per-channel pricing is completely reasonable for a team managing a brand, and completely unworkable as the cost base of a product, because the thing you are trying to grow is the exact thing being metered against you.

Data model. Buffer has no concept of your customer as a tenant, because it was never trying to. There is no per-organization isolation to build multi-tenant permissions on top of, and no way to guarantee at the API layer that customer A's tokens and posts cannot reach customer B.

The long version of this argument, with the OAuth ownership details, is in the Buffer API in 2026, and the wider product landscape is in Buffer alternatives.

Buffer concepts, translated to Outstand

The nouns line up closely enough that porting an integration is mostly mechanical. Outstand lives at https://api.outstand.so/v1 and authenticates with Authorization: Bearer YOUR_API_KEY.

Listing the connected accounts

curl -X GET https://api.outstand.so/v1/social-accounts \
  -H "Authorization: Bearer YOUR_API_KEY"

Publishing across networks in one call

Buffer targets specific channel ids. Outstand's accounts array accepts an account id, a network name such as x or linkedin, or a username, and resolves each identifier to the matching connected accounts - so one call fans out and returns a publish outcome per account.

curl -X POST https://api.outstand.so/v1/posts/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "containers": [{ "content": "Our Q2 launch is live" }],
    "accounts": ["x", "linkedin"]
  }'

Queueing instead of publishing now

curl -X POST https://api.outstand.so/v1/posts/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "containers": [{ "content": "Scheduled with Outstand" }],
    "accounts": ["acc_123"],
    "scheduledAt": "2026-09-01T09:00:00Z"
  }'

There is no separate queue resource - a scheduled post is a queued post. Cancel it with DELETE /v1/posts/:id. The step that is not a find-and-replace is authorization: tokens issued inside a Buffer workspace do not move, so each account is connected once through Outstand's own OAuth flow, scoped to the organization that owns it.