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Buffer API alternatives

19 tools we tested head to head against Buffer API, ranked — and what each one actually does differently.

last reviewed 23 jul 2026 · from our best 20 social media api providers ·list curated by Onur Ozcanxin

first — what you'd be leaving

Buffer API ranks #2 of 20 in our social media api providers testing. a free-tier api and an official mcp server, from a company that will still exist next year.

88/100

a decade-old company shipping a genuinely open api with an official mcp server — the best reliability-per-dollar here, if you can live with the monthly ceiling.

why people look for an alternative
  • −30-day rolling caps are low for multi-tenant products
  • −publishing-focused; analytics thinner than rivals
  • −higher limits require emailing support

stay with Buffer API if api and mcp server available on the free plan is the thing you care about most — nothing below beats it on that.

the short version
best alternativeZernioproducts connecting many social accounts, where per-profile pricing would kill margins90/100
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  1. 1

    Zernio

    #1 in social media api providers · formerly Late — graduated per-account pricing that beats everyone at scale

    90/100

    verdictthe best price-to-capability ratio in the category by a wide margin, with a real free tier and webhooks included from the start.

    Zernio vs Buffer API
     Buffer APIZernio
    pricefree — api access is available on the free planfree for 2 accounts, then $6 / $3 / $1 per account per month
    free tieryesyes
    typeunified aggregatorunified aggregator
    accessopen, self-serve, free tieropen, self-serve
    pricing modelplan tier with rolling capsper connected account, graduated
    ai agent supportofficial mcp + climcp server marketed; verify scope
    rate limit100/15min, 250–500/day, 3k–15k/30dnot publicly documented

    switch forproducts connecting many social accounts, where per-profile pricing would kill margins

    pros
    • +graduated pricing is 10–25× cheaper than per-profile rivals at scale
    • +genuine free tier with webhooks included
    • +unlimited posts, analytics, messaging and ads at every tier
    • +sdk rename was backwards-compatible with a six-month grace period
    cons
    • −young company with a recent rebrand — dependency risk
    • −x/twitter costs passed through, not absorbed
    • −platform count is stated inconsistently across its own marketing
    visit Zernio →full Zernio review →
  2. 2

    Ayrshare

    #3 in social media api providers · the broadest surface area, at a price most indie developers can't justify

    86/100

    verdictthe most complete api in the category — publishing, analytics, comments, dms and ads across thirteen networks — priced squarely at companies rather than individuals.

    Ayrshare vs Buffer API
     Buffer APIAyrshare
    pricefree — api access is available on the free plan$149 / month for a single profile
    free tieryesno
    typeunified aggregatorunified aggregator
    accessopen, self-serve, free tieropen, self-serve
    pricing modelplan tier with rolling capsper profile, tiered
    ai agent supportofficial mcp + clitwo mcp servers + sdks
    rate limit100/15min, 250–500/day, 3k–15k/30d300 req / 5 min per profile

    switch forfunded products that need publishing, analytics, comments and dms in one api

    pros
    • +widest capability surface — publishing, analytics, comments, dms, ads
    • +handles per-user oauth so you don't register platform apps
    • +two mcp servers, including one for documentation
    • +documented rate limits and an explicit suspension policy
    cons
    • −$149/month for one profile is steep for indie developers
    • −per-profile pricing punishes multi-tenant products
    • −messaging and ads coverage is narrower than the marketing suggests
    visit Ayrshare →full Ayrshare review →
  3. 3

    Postiz

    #4 in social media api providers · open source, self-hostable, api on the cheapest tier

    84/100

    verdictthe best open-source option, and one of very few that puts the api and webhooks on the entry tier rather than behind an enterprise plan.

    Postiz vs Buffer API
     Buffer APIPostiz
    pricefree — api access is available on the free plan$29 / month cloud, or free self-hosted
    free tieryesyes
    typeunified aggregatorunified aggregator, open source
    accessopen, self-serve, free tieropen; self-host or cloud
    pricing modelplan tier with rolling capschannel-count tiers, or free self-hosted
    ai agent supportofficial mcp + cliofficial mcp + node sdk
    rate limit100/15min, 250–500/day, 3k–15k/30dnot publicly documented

    switch forteams who want no vendor lock-in and are willing to run it themselves

    pros
    • +api and webhooks on the $29 entry tier
    • +fully self-hostable with no vendor lock-in
    • +official mcp server, node sdk and n8n node
    • +very active development
    cons
    • −agpl is a genuine constraint for commercial embedding
    • −self-hosting means you own every platform approval yourself
    • −cloud channel caps are low relative to rivals
    visit Postiz →full Postiz review →
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  4. 4

    Blotato

    #5 in social media api providers · flat pricing regardless of account count, with a hosted mcp

    82/100

    verdictflat monthly pricing whatever your account count, plus a working hosted mcp server — held back by being an ai content product with an api rather than an api company.

    Blotato vs Buffer API
     Buffer APIBlotato
    pricefree — api access is available on the free plan$29 / month
    free tieryesyes
    typeunified aggregatorunified aggregator + ai content
    accessopen, self-serve, free tieropen, self-serve
    pricing modelplan tier with rolling capsflat tier, unlimited accounts
    ai agent supportofficial mcp + clihosted mcp + n8n/make nodes
    rate limit100/15min, 250–500/day, 3k–15k/30d30 req/min upload and publish

    switch forn8n and make workflows, and anyone burned by per-account pricing

    pros
    • +flat pricing regardless of connected account count
    • +hosted mcp server working with claude and cursor
    • +official n8n and make nodes, actively recommended
    • +documented 30 req/min limits
    cons
    • −pricing table contradicts its own api docs on access
    • −generation credits complicate cost modelling
    • −content product first, api second — thinner docs
    visit Blotato →full Blotato review →
  5. 5

    Bluesky / AT Protocol

    #6 in social media api providers · the only major network with zero access friction

    80/100

    verdictfree, open, generously rate-limited and with an open firehose — the best platform in existence for developers, attached to the smallest audience.

    Bluesky / AT Protocol vs Buffer API
     Buffer APIBluesky / AT Protocol
    pricefree — api access is available on the free planfree — no approval, no review, no partner programme
    free tieryesyes
    typeunified aggregatorfirst-party platform, open protocol
    accessopen, self-serve, free tierfully open — no review
    pricing modelplan tier with rolling capsfree
    ai agent supportofficial mcp + cliofficial sdks; community mcp
    rate limit100/15min, 250–500/day, 3k–15k/30d5,000 points/hr, 35,000/day

    switch foragent builders who want to ship today instead of waiting on approvals

    pros
    • +no approval process of any kind — start immediately
    • +open firehose for real-time whole-network access
    • +generous point-based limits: ~1,600 creates/hour
    • +official typescript and go sdks, self-hostable pds
    cons
    • −much smaller audience than the closed networks
    • −minimal built-in analytics
    • −no official mcp server, though community ones exist
    visit Bluesky / AT Protocol →full Bluesky / AT Protocol review →
  6. 6

    Postproxy

    #7 in social media api providers · api, sdks and webhooks on the free tier

    78/100

    verdictthe strongest newcomer — unusually complete engagement coverage including dms and review management, with the api genuinely available on the free tier.

    Postproxy vs Buffer API
     Buffer APIPostproxy
    pricefree — api access is available on the free planfree (10 posts/month), then $17 / month
    free tieryesyes
    typeunified aggregatorunified aggregator
    accessopen, self-serve, free tieropen, self-serve, free tier
    pricing modelplan tier with rolling capsprofile-group tiers
    ai agent supportofficial mcp + climcp + sdks + webhooks
    rate limit100/15min, 250–500/day, 3k–15k/30dnot publicly documented

    switch forevaluating an integration properly before paying for anything

    pros
    • +api, sdks and webhooks on the free tier
    • +dm and comment read-and-reply, plus review management
    • +clear tier pricing from $17 to $699
    • +mcp, n8n and zapier support
    cons
    • −early-stage company — higher dependency risk
    • −smaller platform list than the incumbents
    • −limited public track record
    visit Postproxy →full Postproxy review →
  7. 7

    Mixpost

    #8 in social media api providers · a one-time licence instead of a subscription

    76/100

    verdictthe best total cost of ownership here — $299 once against $599 a month elsewhere — in exchange for owning the hosting and every platform approval yourself.

    Mixpost vs Buffer API
     Buffer APIMixpost
    pricefree — api access is available on the free plan$299 once (pro), or free self-hosted lite
    free tieryesyes
    typeunified aggregatorself-hosted aggregator
    accessopen, self-serve, free tieropen; you self-host
    pricing modelplan tier with rolling capsone-time perpetual licence
    ai agent supportofficial mcp + climcp server on pro and above
    rate limit100/15min, 250–500/day, 3k–15k/30dyour own infrastructure

    switch forlong-lived products where a monthly subscription compounds badly

    pros
    • +one-time $299 licence rather than a subscription
    • +unlimited accounts and team members
    • +rest api and mcp server included on paid tiers
    • +enterprise tier is a white-label resale kit
    cons
    • −free tier's three networks make evaluation hard
    • −you own hosting, upgrades and every platform approval
    • −no managed option at all
    visit Mixpost →full Mixpost review →
  8. 8

    bundle.social

    #9 in social media api providers · unlimited accounts and users, no per-seat fee

    74/100

    verdictunlimited connected accounts and unlimited users on paid plans — the right shape for a product whose customers bring their own profiles.

    bundle.social vs Buffer API
     Buffer APIbundle.social
    pricefree — api access is available on the free planfree (20 posts/month), then $100 / month
    free tieryesyes
    typeunified aggregatorunified aggregator
    accessopen, self-serve, free tieropen, self-serve, free tier
    pricing modelplan tier with rolling capsflat tier, volume-capped
    ai agent supportofficial mcp + cliapi-first; mcp not documented
    rate limit100/15min, 250–500/day, 3k–15k/30dpost and comment volume caps

    switch formulti-tenant saas where each customer connects their own accounts

    pros
    • +unlimited connected accounts and users on paid plans
    • +no per-seat or per-account fees
    • +api access on the free tier
    • +covers discord, slack and mastodon alongside the majors
    cons
    • −post and comment volume caps replace account caps
    • −x costs are extra and prepaid
    • −smaller company with a limited public track record
    visit bundle.social →full bundle.social review →
  9. 9

    X API

    #10 in social media api providers · pay-per-usage, no approval — and a $0.20 tax on any post with a link

    71/100

    verdictx replaced its subscription tiers with credits and removed the approval gate entirely — then made any post containing a link cost thirteen times a normal one.

    X API vs Buffer API
     Buffer APIX API
    pricefree — api access is available on the free plan$0.015 per post; $0.200 per post containing a url
    free tieryesno
    typeunified aggregatorfirst-party platform
    accessopen, self-serve, free tieropen — priced, not gated
    pricing modelplan tier with rolling capsprepaid credits, per request
    ai agent supportofficial mcp + cliofficial mcp; no post-create tool
    rate limit100/15min, 250–500/day, 3k–15k/30d2M post reads / billing cycle

    switch forproducts that must be on x, once they have modelled the link cost

    pros
    • +no approval gate and no minimum spend
    • +24-hour deduplication window on repeated reads
    • +official mcp servers for search, bookmarks and articles
    • +usable at genuinely small scale
    cons
    • −$0.20 per post containing a link — 13× a normal post
    • −the mcp cannot post regular tweets
    • −third pricing regime since 2023; unpredictable bills
    visit X API →full X API review →
  10. 10

    Threads API

    #11 in social media api providers · the most generous free publishing quota, and the easiest meta surface

    69/100

    verdictfree, generously limited and noticeably easier to get into than instagram or facebook — the best meta surface for developers by a distance.

    Threads API vs Buffer API
     Buffer APIThreads API
    pricefree — api access is available on the free planfree
    free tieryesyes
    typeunified aggregatorfirst-party platform
    accessopen, self-serve, free tiergated, but the easiest meta surface
    pricing modelplan tier with rolling capsfree
    ai agent supportofficial mcp + cliwebhooks; no official mcp
    rate limit100/15min, 250–500/day, 3k–15k/30d250 posts / 1,000 replies per 24h

    switch foragents that post frequently and want a first-party integration without the meta gauntlet

    pros
    • +250 posts and 1,000 replies per 24 hours, free
    • +much lower access friction than instagram or facebook
    • +webhooks and keyword search included
    • +granular permissions — request only what you use
    cons
    • −general call budget scales with impressions, hurting small accounts
    • −smaller audience than the other networks
    • −no official mcp server
    visit Threads API →full Threads API review →
+ 9 more tested, not detailed here
we ranked 20 social media api providers in total. the 9 that didn't make this page are written up in the full ranking →

how these were compared

every tool on this page went through the same test as Buffer API — same tasks, same order, scored the same way. the comparison tables are the figures from that testing, not vendor spec sheets.

the social media api providers test in full →
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