Skip to main content
Back

Every developer who ships social features learns the same lesson: building directly on Meta's Graph API, X's pay-per-use API, LinkedIn's restricted endpoints, and TikTok's shifting permission model is months of work before the first post goes live.

A unified social media API collapses that into one integration, with one authentication flow and one schema across many networks. The wrappers are not interchangeable, though. Some cost $149 a month and ship no dashboard at all. Others charge per connected channel. One is open source and self-hostable. Rate limits run from 30 requests an hour to effectively unbounded.

We compared the production unified APIs on platform coverage, authentication models, rate limits, pricing, and documentation. Here are the ten best, plus honest guidance on when to skip the wrapper entirely and build on the native APIs. Prices were checked in August 2026 and are monthly billing unless noted; vendor-stated API details we could not independently verify are called out as such.

What a Unified Social Media API Actually Is

A social media API is an HTTP interface that lets your code create posts, read analytics, and manage comments on a user's behalf. Every major network ships its own native API, each with different auth flows, rate limits, request schemas, and deprecation cycles.

A unified social media API, the category this article ranks, wraps those native APIs behind one consistent interface. Instead of maintaining ten SDKs, you authenticate once, call one endpoint such as POST /posts, and the wrapper handles routing, rate limits, token refresh, and per-platform media handling.

The tools sit on a spectrum, and knowing which kind you are buying saves a lot of evaluation time.

Developer-first APIs. Ayrshare and Zernio are pure API products with no end-user dashboard, built for companies embedding social features into their own software.
SaaS APIs. Maeve Social, Buffer, Publer, Sendible, and Hootsuite put an API on top of an end-user product, useful when you want both a UI and programmatic access.
Open-source APIs. Postiz is self-hostable, so you own both the infrastructure and the bill.
Analytics-first APIs. Vista Social's API is optimized for reading performance data, with publishing as a secondary concern.

The Maeve Social API

A REST API, CLI, and hosted MCP server on every plan, alongside the full dashboard. Generate an API key from settings and start scheduling posts programmatically in minutes.

See the API

Plan, preview, and publish in one workflow

1. Maeve Social: API, MCP, CLI, and Dashboard on One Subscription

Maeve Social ships four things on one flat subscription: a REST API, a CLI, a hosted MCP server for AI agents, and a production social media management dashboard. Other tools on this list have some of that combination. Vista Social and Hootsuite both offer MCP alongside their dashboards, and Ayrshare's API runs far deeper. What Maeve does differently is bundle all of it on every plan, including the $25 a month Basic plan, with no add-on pricing, no sales conversation, and no per-call metering.

The API covers connected accounts, content and publishing workflows, and analytics for Instagram, Facebook, YouTube, TikTok, Pinterest, Threads, and Google Business Profile. Maeve publishes to nine networks, but LinkedIn and X analytics are not currently part of the analytics surface. Workspaces and team permissions remain part of the surrounding product.

API keys are generated from the dashboard, and API, CLI, and MCP access are included on every plan, so Basic is a legitimate way to start building. The honest limits: this is an API attached to a product, not a standalone developer platform. There is no multi-tenant key model for reselling access to your own customers, and no Bluesky, Reddit, or Snapchat.

PlanPriceSocial connectionsAPI, CLI, and MCP
Basic$25/mo20Included
Standard$99/mo50Included
Premium$199/moUnlimitedIncluded
Maeve Social pricing, August 2026
One subscription, four surfaces. REST API, CLI, hosted MCP, and the full dashboard, with nothing gated behind add-ons or sales calls.
Nine platforms through one integration. Including Google Business Profile, which is uncommon in this category.
Analytics across seven supported networks. Including best-time-to-post suggestions, on every plan.
Publishing automation. Create and schedule content through the API without a built-in CSV bulk importer.
Approvals that automation respects (Standard and up). Programmatic publishing runs through the same approval workflow your team already uses, which matters for agency automation.
Workspaces. Keep brands or clients separate under one account.

Pros

Where Maeve Social wins

API, CLI, MCP, and a full dashboard on one flat price with no per-call, per-channel, or per-seat compounding. Build against the API directly or let an AI agent drive it over MCP. Approvals and workspaces carry through to automated publishing.

Cons

Where it falls short

It requires a Maeve Social account; it is not a standalone developer platform the way Ayrshare is, and there is no multi-tenant or white-label API model. Nine platforms, with no Bluesky, Reddit, or Snapchat. A newer product with a smaller user base than the incumbents.

2. Ayrshare: The Most Comprehensive Developer API

Ayrshare is the heavyweight of the category: 13 supported platforms (Bluesky, Facebook, Google Business Profile, Instagram, LinkedIn, Pinterest, Reddit, Snapchat, Telegram, Threads, TikTok, X, and YouTube), with endpoints for posting, analytics, comments, messages, and ads, including Facebook ad creation from existing posts. If you are building a product on top of a social media API, Ayrshare is the default pick.

The trade-off is that Ayrshare is a pure API product. There is no dashboard your marketing team can log into to plan a calendar; the product is the API. That makes it unmatched for embedding social into your own SaaS and overkill for teams that also need a UI.

Auth is a Bearer token, and the Business and Enterprise plans add a Profile-Key header that routes each request to a specific end user's connected accounts, the model you want for multi-tenant SaaS. Ayrshare documents that X operations require additional OAuth 1.0a credentials from March 2026, a gotcha worth planning for. Rate limits scale with plan tier and are not publicly disclosed per endpoint. All of these details are vendor-stated.

Platforms: 13, the widest coverage of any pure unified API here.
Pricing: Premium $149/mo for a single brand, Launch $299/mo for 10 profiles, Business $599/mo for 30 profiles scaling to thousands with white-label multi-user support, Enterprise custom. Vendor-stated; no free tier.
Best for: SaaS companies embedding social features into their own product, or agencies building a white-label social tool.
The verdict: The deepest platform and endpoint coverage in the category, with docs and an auth model genuinely built for developers. You pay for it, starting at $149 a month, and your marketing team gets no UI.

3. Postiz: Best Open-Source and Self-Hosted API

Postiz is the open-source default. Its public REST API exposes posts and integrations endpoints with API-key Bearer auth or OAuth 2.0, and you can self-host the whole product via Docker. If you run your own infrastructure, it is free, with no artificial API metering and support for 30 or more platforms including Dev.to, Hashnode, Slack, Discord, and Mastodon.

The caveat matters: Postiz documents that its cloud public API is rate-limited to 30 requests per hour, and recommends batching multiple scheduled posts into a single request. That is fine for nightly jobs and cron-driven publishing and hopeless for interactive dashboards or real-time automation. Self-hosted instances lift the cap, but then the infrastructure work and the bill are yours. The API surface is also narrower than Ayrshare's or Maeve Social's, and SDK support is thin.

Platforms: 30+, including long-tail networks no commercial wrapper touches.
Pricing: Free if self-hosted. Cloud plans start at $29/mo; upper cloud tiers are vendor-stated and worth confirming at signup. No permanent free cloud plan.
Best for: Developers who want to own their infrastructure, or teams needing unusual platform support.
The verdict: Unbeatable if you are willing to run it yourself. The cloud API's 30 requests an hour makes the hosted version a batch tool, not an application backend.

4. Zernio: Best Developer-First Challenger

Zernio, renamed from getlate.dev in early 2026, is the rising challenger in the developer-first space. The vendor lists 15 platforms including Discord and WhatsApp, which on paper is wider than Ayrshare, and the pitch is price: a free tier of 20 posts a month on 2 profiles and a $19 a month entry plan undercut Ayrshare's $149 starting point by an order of magnitude.

The API covers posting, comments, messaging, analytics, and ads, with simple Bearer-token auth and no OAuth setup required from developers. Limits are per-post quotas rather than per-call: 20 posts a month free, 120 on Build at $19, unlimited on Accelerate at $49, with add-ons for analytics, comments, and ads from $10 a month. We have not independently verified Zernio's platform list, endpoints, or pricing, so treat all of it as vendor-stated.

The risks are the usual challenger risks: a smaller, newer company, a feature set that needs add-ons to match Ayrshare's defaults, and a brand that just changed its name.

Platforms: 15 per the vendor, including Discord and WhatsApp.
Pricing: Free tier (20 posts, 2 profiles), Build $19/mo, Accelerate $49/mo, custom above that. Vendor-stated.
Best for: Indie developers, early-stage startups, and anyone evaluating Ayrshare alternatives on cost.
The verdict: The most usable free tier in the category and real breadth for the price, with the roadmap risk that comes with a young company.

5. Buffer: Best GraphQL Option

Buffer runs an official GraphQL API. For teams already on Buffer, it is a natural extension: same account, same channels, same limits, across Buffer's 11 platforms including Mastodon and Bluesky. API access is included on every plan, including the free plan's 3 channels, which makes Buffer one of the cheapest ways to experiment with programmatic posting at all.

GraphQL is the differentiator. If your backend is already GraphQL-native, Buffer's API slots in cleanly: request exactly the fields you need, batch queries, explore the schema interactively. If your team is REST-first, expect a modest but real learning curve. The bigger structural limit is scoping: the API represents one Buffer account at a time, which rules out multi-tenant SaaS, and per-channel pricing compounds once you run many channels.

Platforms: 11, including Mastodon and Bluesky.
Pricing: Free for 3 channels with API access included. Essentials $6 per channel a month for one user, Team $12 per channel with unlimited users and approvals; channels 11 through 25 drop to $4.
Best for: Teams already on Buffer, or GraphQL-native backends that want an idiomatic integration.
The verdict: A well-maintained official API with a genuinely free way in. Single-account scoping and per-channel pricing keep it out of multi-tenant territory.

6. Publer: Best for Bulk Scheduling

Publer's API is available to Business and Enterprise customers only. The headline feature is bulk scheduling of up to 500 posts in a single request, the most generous batch limit in the category, which suits agencies loading a quarter's content in one go or tools migrating schedules from another platform.

Endpoints cover creating, drafting, scheduling, auto-scheduling, and instantly publishing posts across multiple accounts, with one-time, recurring, and recycled schedule types; recycling is the native evergreen loop Publer is known for. An analytics API exposes engagement data and peak times. The 13 supported platforms include Mastodon, Telegram, Bluesky, and WordPress. The gaps: the API is gated to Business and up, the ecosystem and SDK support are smaller than Ayrshare's or Buffer's, and the documentation trails the category leaders.

Platforms: 13, including Mastodon, Telegram, Bluesky, and WordPress.
Pricing: API access requires Business, which runs from $10/mo for the first connected account plus $7 for each additional ($3 per extra member). Enterprise is custom.
Best for: Agencies and evergreen-content publishers running high-volume bulk operations.
The verdict: The best bulk scheduling in the category at a low entry price, behind a plan gate and thinner docs.

7. Blotato: Best for AI Media Workflows

Blotato's REST API is optimized for AI content pipelines: creating images, videos, carousels, and infographics programmatically in the same flow that publishes them. Native n8n and Make.com nodes, plus REST support for Zapier and custom webhooks, make it a default for teams wiring AI-generated content into automated publishing. The vendor even publishes its API spec in a format designed to be pasted into an LLM as context.

The API covers media creation, presigned uploads for local files, and cross-platform publishing. The constraints are real: API access excludes the free trial, AI credits are the effective meter and video-heavy workflows burn through the entry plan quickly, and there are no analytics or inbox endpoints. Blotato's platform list, plans (Starter $29, Creator $97, Agency $499), and credit allowances are vendor-stated and unverified by us.

Platforms: Around 10 per the vendor; no Google Business Profile.
Pricing: Starter $29/mo (1,250 AI credits), Creator $97/mo (5,000), Agency $499/mo (28,000). Vendor-stated; paid plans only for API access.
Best for: Teams wiring AI-generated content into automated publishing pipelines, especially via n8n or Make.com.
The verdict: The strongest AI-media angle here, priced in credits rather than calls. Skip it if you need analytics or inbox endpoints.

8. Vista Social: Best for Owned-Profile Analytics

Vista Social's API is a paid add-on, enabled through your customer success manager, that exposes owned-profile data for analytics-heavy reporting. Endpoints cover profile performance, post performance, comments, and scheduling, with particular depth on the analytics side. Vista also runs a hosted MCP server on paid plans, so like Maeve it can hand its capabilities to an AI agent.

The unusual angle is review sites: Vista covers 13 social platforms plus Google, Yelp, and Trustpilot reviews in the same data model, which makes it one of the few APIs where social and reputation data arrive together. The API is read-heavy, and its strongest use case is pulling analytics into internal dashboards or custom client reports. The friction is the sales motion: add-on pricing is not public, there is no self-serve path, and X publishing is itself a $29 a month add-on per account.

Platforms: 13, plus review sites (Google, Yelp, Trustpilot).
Pricing: Professional $79/mo (3 users, 15 profiles), Advanced $149, Scale $349, plus the unpriced API add-on. X is $29/mo per account extra.
Best for: Teams building custom client-reporting dashboards that need social and review-site data together.
The verdict: The deepest owned-profile analytics surface here, behind an opaque add-on price and a mandatory sales conversation.

9. Sendible: Best for Agency Dashboards

Sendible's API is available on its paid plans and covers its 10 platforms, which include WordPress and Bluesky. It has long been popular with agencies, where it underpins custom client dashboards and reporting workflows, and every Sendible plan includes unlimited users, which changes the economics for larger teams. The public API documentation is less polished than Ayrshare's or Buffer's, there is no prominently published OpenAPI spec, and official SDKs are few.

For agencies specifically, the draw is the surrounding product: a white-label dashboard is available as a paid extra on the Elite and Enterprise plans, and the API commonly feeds custom client-facing reporting on top of it.

Platforms: 10, including WordPress and Bluesky.
Pricing: Monthly price with workspace/profile allowance: Core $35 (1/6), Plus $99 (3/18), Premium $199 (7/42), Elite $299 (15/90), Enterprise $750 (50/300). Users are unlimited; white label is a paid extra for the top two tiers.
Best for: Agencies that want an API behind client-facing dashboards, with white-label available at the top tiers.
The verdict: An agency-shaped product with an API attached, rather than a developer product. Fine for reporting integrations, weak on developer ergonomics.

10. Hootsuite: Best for Enterprise Integrations

Hootsuite's Platform API is a REST API available to approved developers at no cost beyond a Hootsuite subscription, and the subscription is the real price: Standard starts at $99 per user a month billed annually, and monthly billing costs more. It is designed primarily for integrations, connecting Hootsuite to Salesforce, Marketo, Mailchimp, or internal dashboards, with OAuth 2.0 auth and approval workflow support in the API.

Hootsuite's strength is not raw API power, it is enterprise ecosystem fit. If your organization already runs on Hootsuite and needs to push content from a CMS or pull analytics into a BI tool, the Platform API is the natural route, and Hootsuite also ships MCP connectors for AI-agent access. For greenfield projects, lighter and cheaper options make more sense, and per-user pricing scales poorly for dev teams.

Platforms: 9, including Threads and Bluesky.
Pricing: Standard $99/user/mo, Professional $199, Advanced $399, all billed annually with monthly billing higher; Enterprise custom. 30-day trial.
Best for: Enterprises already on Hootsuite that need to wire it into internal systems.
The verdict: Reliable and deeply connected to the B2B stack, with an integration-focused surface and an entry price that assumes you wanted Hootsuite anyway.

The Whole Field at a Glance

Two ways to cut the field: what each API is best at, and which platforms each one reaches. Platform lists for Zernio and Blotato are vendor-stated.

APIBest forPlatformsAuthStarting price
Maeve SocialAPI + MCP + CLI + dashboard on one plan9API key$25/mo
AyrshareCompanies building on top13Bearer + Profile-Key$149/mo
PostizSelf-hosters30+Bearer or OAuth 2.0Free (self-host)
ZernioBudget-conscious developers15 (vendor-stated)BearerFree / $19/mo
BufferExisting Buffer customers, GraphQL11API keyFree / $6 per channel
PublerBulk scheduling13API key (Business+)From $10/mo
BlotatoAI content pipelines~10 (vendor-stated)API key$29/mo
Vista SocialAnalytics-heavy reporting13 + review sitesAPI key (add-on)From $79/mo + add-on
SendibleAgency dashboards10API keyFrom $35/mo
HootsuiteEnterprise integrations9OAuth 2.0From $99/user/mo annual
The ten APIs compared, August 2026
APIIGFBXLinkedInTikTokYouTubeThreadsPinterestBlueskyGBPOthers
Maeve SocialYesYesYesYesYesYesYesYesNoYesNone
AyrshareYesYesYesYesYesYesYesYesYesYesReddit, Snapchat, Telegram
PostizYesYesYesYesYesYesYesYesYesYesDev.to, Slack, Discord, Mastodon, more
ZernioYesYesYesYesYesYesYesYesYesYesReddit, Snapchat, Telegram, Discord, WhatsApp
BufferYesYesYesYesYesYesYesYesYesYesMastodon
PublerYesYesYesYesYesYesYesYesYesYesMastodon, Telegram, WordPress
BlotatoYesYesYesYesYesYesYesYesYesNoNone
Vista SocialYesYesAdd-onYesYesYesYesYesYesYesReddit, review sites
SendibleYesYesYesYesYesYesYesYesYesYesWordPress
HootsuiteYesYesYesYesYesYesYesYesYesNoNone
Platform coverage by API

Rate Limits Compared

Rate limits are the spec sheet line most likely to sink an integration after you have already committed. Most vendors do not publish per-endpoint numbers, so verify against your real workload during a trial. Native-API figures below are as documented by Meta and X and worth re-checking before you build against them.

APIRate limitNotes
Maeve SocialFlat plans, no per-call meteringLimits documented in the API docs per plan
AyrshareScales with plan tierNot publicly disclosed per endpoint
Postiz (cloud)30 requests/hourDocumented; batch posts into single requests
Postiz (self-hosted)Your infrastructure's limitNo artificial cap
ZernioPer-post quotas by plan20/mo free, 120 on Build, unlimited on Accelerate (vendor-stated)
BufferDocumented, plan-basedIncluded on all plans
PublerBusiness plan limitsUp to 500 posts per batch request
BlotatoAI credits are the real meterStarter includes 1,250 credits/mo (vendor-stated)
Vista SocialAdd-on termsSet with your customer success manager
SendibleNot publicly disclosedPaid plan required
HootsuiteNot publicly disclosedIncluded with subscription
Meta Graph API (native)Rolling 24-hour call budget tied to audience sizeGenerous for most apps; formula in Meta's docs
X API (native)Pay-per-use, no hard cap below EnterprisePer-call pricing is the effective limit

Build vs. Buy: When to Skip the Wrapper and Go Native

Before picking a unified API, ask the honest question: do you need one at all? The answer is no more often than vendor marketing suggests, and we say that as a vendor.

Native APIs win in four situations. You are targeting one or two platforms, where building directly on Meta Graph or the X API beats integrating a wrapper. You need obscure features such as Meta's Ads API, Instagram DM automation with its 24-hour messaging windows, or TikTok's research API, which are partial or missing in most wrappers. Your volume is huge, where per-call or per-channel wrapper pricing crushes the economics. Or you need maximum reliability, because every abstraction layer is one more thing that can break, and when Meta ships a Graph API change your direct integration can patch that afternoon while a wrapper has to catch up.

Unified APIs win everywhere else. At three or more platforms, maintaining parallel Meta, X, LinkedIn, TikTok, and YouTube integrations is months of work that a unified API turns into days. Multi-tenant products get OAuth, token refresh, and per-profile routing without building any of it. And rate-limit handling, token refresh, per-platform media rules, and thread splitting are solved problems you would otherwise re-solve.

On cost, the native APIs flip the wrapper equation: free or cheap in sticker price, expensive in engineering time. Meta Graph is free but app review takes weeks. X moved new developers to pay-per-use pricing, so publishing volume bills per call. LinkedIn's posting APIs need a partnership approval most teams will not get quickly. TikTok requires a verified developer account and app review. YouTube's free quota is generous for most, but uploads are expensive against it. These platform policies change often; verify each one before committing.

The bottom line: native APIs are free in dollars and expensive in time, and unified APIs flip that. If your runway is short, buy. If your product is the API itself, build.

Authentication Models Explained

If you are comparing APIs at the integration level, auth is where you will spend the most time. Three models dominate, and matching the model to your product shape matters more than any feature checkbox.

Single API key (Bearer token). One token scoped to an account, sent in the Authorization header. Used by Maeve Social, Zernio, Buffer, Publer, Blotato, and Sendible. Fine for single-tenant products and internal tooling.
Master key plus Profile-Key. Ayrshare's multi-tenant model on its upper tiers: a parent key authenticates your app, and a Profile-Key header routes each request to a specific end user's connected accounts. This is the model you want when customers bring their own social accounts to your SaaS.
OAuth 2.0. A user-facing consent flow with token refresh, used by Hootsuite, Postiz's multi-user mode, and most native APIs. More setup, and the correct model when end users connect their own accounts and you need per-user scopes with clean revocability.

How to Choose the Right Social Media API

Six checks, in the order that eliminates options fastest.

1. Count platforms first. If you need only one or two, consider going native. Then pad your list: plenty of teams who built for two networks spent the next year scrambling to add a third.
2. Check rate limits against your workload. A dashboard that calls the API on every user action needs minute-scale limits, not hourly ones. That rules out Postiz cloud for anything interactive.
3. Match the auth model to your product shape. Single-tenant internal tool: API key. Multi-tenant SaaS with user-connected accounts: OAuth 2.0 or Ayrshare's Profile-Key.
4. Budget along the right dimension. Per-call pricing punishes interactive apps, per-channel pricing punishes multi-platform products, per-user pricing punishes teams. Flat-rate options are the most predictable.
5. Test against real platform constraints. Do not just schedule to one account. Test the full mix: Instagram's video limits, X's billing, LinkedIn's image ratios. This is where cheap APIs fail silently.
6. Check for webhooks and an SDK in your language. If your product reacts to post-published or post-failed events, you need webhooks rather than polling. An official SDK halves integration time; failing that, insist on an OpenAPI spec you can generate a client from.

Migrating to a Unified API Without Breaking Things

If you already run native integrations, migrate in stages rather than cutting over.

Map your current integrations. List every network your product touches, what you do on each (post, read, comment), and at what volume. That is the shopping list you evaluate against.
Pilot on a free tier or trial. Zernio's free tier, Buffer's free plan, self-hosted Postiz, and Maeve Social's 3-day trial all let you prove the integration before paying.
Run both systems in parallel. Keep the native integrations live while you mirror writes to the new API, and compare deliverability and error rates for at least a week.
Migrate writes first, reads later. Schedule posts through the new API while still reading analytics from the old system until you trust it.
Switch from polling to webhooks. This is where the efficiency gains actually show up.
Decommission the legacy path only after a clean month. Keep the old credentials for another 30 days in case you need to roll back.

Keeping API Keys Safe

A social media API key can post as your brand, or as your customers' brands. Treat it accordingly.

Scope keys narrowly. Read-only keys for analytics pipelines, write-capable keys only where you publish.
Rotate regularly and revoke fast. Every tool on this list supports revocation from its dashboard; rotate on a schedule and immediately after any personnel change.
Never commit keys. Environment variables, a secret manager, or env files excluded from git.
Watch the audit logs. Most SaaS APIs expose per-key call logs; review them after any incident or unusual traffic.
Verify webhook signatures. If the API signs webhook payloads, validate the signature server-side rather than trusting inbound data.
Isolate tenants on multi-tenant SaaS. In a parent-key model, a compromised parent key exposes every customer, so use separate keys per environment and the narrowest scope each service needs. The same thinking applies when you hand an AI agent write access over MCP; see our guide to MCP servers for social media management.

How We Put This List Together

Maeve Social is our product, so read our placement with that in mind. We put it first because bundling a REST API, CLI, hosted MCP, and full dashboard on flat plans from $25 a month is a combination nothing else on the list matches at that price, not because it wins every category. It does not: Ayrshare's endpoint surface is deeper and multi-tenant, Postiz is open source and reaches 30+ platforms, Zernio has a free tier we cannot match, and Maeve has no Bluesky, Reddit, or Snapchat and no white-label API.

Maeve Social claims are grounded in our own product. Competitor pricing was checked against public pricing pages in August 2026, monthly billing unless noted. API details that only appear in vendor documentation, including Ayrshare's, Zernio's, and Blotato's plan structures and limits, are marked vendor-stated; confirm them during a trial before committing an architecture to them.

FAQ

The questions developers actually ask when picking a social media API.

What is a social media API? An HTTP interface that lets your code create posts, read analytics, and manage comments on social networks. Every major platform ships its own native API, but maintaining many parallel integrations is expensive, which is why unified APIs wrap them behind one consistent interface.
Should I build on the native APIs or use a unified API? Go native if you target one or two platforms, need obscure features, or run at a scale where wrapper pricing hurts. Go unified if you target three or more platforms, need multi-tenant isolation, or your team's priority is shipping product rather than maintaining integrations.
What is the best free social media API? Zernio's free tier (20 posts a month on 2 profiles, vendor-stated) is the most usable pure-API option. Buffer's free plan includes API access across 3 channels. Postiz is free if you self-host. Maeve Social has no free plan, but the 3-day trial opens the full API, CLI, and MCP.
Is the Meta Graph API free? There is no usage fee, but Instagram publishing needs a Business or Creator account linked to a Facebook Page, plus approved app permissions. The free sticker price hides real engineering time on app review, token refresh, and Meta's periodic API changes, which is exactly the work unified APIs absorb.
How much does the X API cost? X has moved new developers toward pay-per-use pricing, so publishing and reading bill per call rather than per month. Pricing has changed several times in recent years, so check X's developer pricing page before building. Most unified APIs handle X within their plans, though some, like Vista Social, price X access separately.
Can I post to Instagram and TikTok from my own app? Yes, either through a unified API (Maeve Social, Ayrshare, Zernio, and Buffer all cover both) or directly against the Meta Graph API and TikTok's Content Posting API. Both native paths require app review before production use.
What is the difference between REST, GraphQL, and MCP? REST is the dominant model here. GraphQL, used by Buffer, lets you request exactly the fields you need in one round trip. MCP is a newer standard for exposing tools to AI assistants: use REST or GraphQL for traditional programmatic access, MCP when you want an AI agent driving the account. Maeve Social, Vista Social, and Hootsuite all ship MCP alongside their APIs.
Do I need OAuth? If your end users connect their own social accounts, yes, OAuth 2.0 is the right model. For internal tooling or a single-brand product, an API key is simpler and enough. Ayrshare's Profile-Key sits in between: your app holds one parent key and routes per user via a header.
Can I white-label a social media API? Ayrshare's Business plan is built for it, with white-label multi-user support. Sendible sells a white-label dashboard as a paid extra on its Elite and Enterprise plans. Self-hosted Postiz can be rebranded under its open-source license, though AGPL obligations apply. Maeve Social offers white-labeled PDF reports on Standard and up, but not a white-labeled API.

The short version: at one or two platforms, go native and keep the control. At three or more, a unified API saves you months of integration work. Ayrshare if you are embedding social into a product you sell, Postiz if you want to own the infrastructure, Zernio if budget is the constraint, and Buffer if you are already there.

If your team wants programmatic access and a product humans log into, that is the combination Maeve Social was built for: a REST API, CLI, and hosted MCP server on every flat plan from $25 a month, with API keys generated from the dashboard in seconds and a 3-day trial that opens all of it.