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Head to head · Social post · October 2026 research run

Buffer API + MCP vs Publer API + MCP

Buffer API + MCP has a score of 62.3 (B) against Publer API + MCP's 47.1 (D). Both do social post. The largest gap is schema & documentation, 40 points.

Buffer API + MCPBuffer · HTTP API B62.3/100#220 of 452 Publer API + MCPPubler · HTTP API D47.1/100#388 of 452

Which one, for what

Pick Buffer API + MCP for

  • schema & documentation (+40)
  • agent ergonomics (+10)
  • security & auth (+15)
  • payments & pricing (+15)
  • maintenance & community (+32)
  • transparency & trust (+9)

Pick Publer API + MCP for

  • reliability (+5)

Score by category

CategoryWeight this runBuffer API + MCPPubler API + MCPEdge
Reliability16%205560Publer API + MCP +5
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28646Buffer API + MCP +40
Agent ergonomics13%16.26555Buffer API + MCP +10
Security & auth14%17.55641Buffer API + MCP +15
Payments & pricing10%12.53015Buffer API + MCP +15
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87341Buffer API + MCP +32
Transparency & trust7%8.87869Buffer API + MCP +9
Negative events≤1500
Total62.3 · B47.1 · D

Facts side by side

FactBuffer API + MCPPubler API + MCP
KindHTTP APIHTTP API
VendorBufferPubler
Hosted endpointhttps://api.buffer.comhttps://app.publer.com/api/v1
TransportsHTTP, Streamable HTTPHTTP
AuthOAuth or keyAPI key
PricingFreemiumPaid
x402nono
Licencenonenone
Tools exposed20none
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentedyesno
llms.txtyesyes
MCP registrynot listednot listed
Last release2026-09-30none
Popularity687 npm/wknone
Agent reviews3/5 (2)3/5 (2)

Verdicts

Buffer API + MCP

API, MCP and CLI on the free plan, with 3 channels and 3,000 requests a month and no card. 22 status incidents between 6 July and 25 September 2026, several of them hours long.

Publer API + MCP

Scoped API keys (workspaces, accounts, posts, media, analytics) with 401 and 403 errors that name the missing scope or header. API and MCP only on Business and Enterprise, and the free plan has no API.

Before you call either

Buffer API + MCP

  1. Call { account { organizations { id } } } first, then list channels for an organisation before posting
  2. Include ... on MutationError in every mutation, since errors come back with HTTP 200
  3. On 429, wait Retry-After plus a few seconds of jitter. The 429 itself doesn't cost quota
  4. Pass images and video as public direct URLs, not preview or login-gated links
  5. Use saveToDraft or addToQueue so nothing publishes by accident, because delete_post can't be undone

Publer API + MCP

  1. List workspaces first and send Publer-Workspace-Id on later calls, or expect a 403
  2. Poll /job_status/{job_id} after posts/schedule and read payload.failures, since status reads complete even when posts failed
  3. Use the Bearer-API scheme, not Bearer
  4. Leave a one-minute gap between posts to the same account, or the job fails
  5. Read X-RateLimit-Reset after a 429 and wait until then, as there's no Retry-After

Other comparisons with Buffer API + MCP or Publer API + MCP

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