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Head to head · Social post · October 2026 research run

Mixpost API + MCP vs Upload-Post API + MCP

Upload-Post API + MCP has a score of 58.9 (C) against Mixpost API + MCP's 49.7 (D). Both do social post. The largest gap is transparency & trust, 22 points.

Mixpost API + MCPMixpost (Inovector) · HTTP API D49.7/100#368 of 452 Upload-Post API + MCPUpload-Post · HTTP API C58.9/100#275 of 452

Which one, for what

Pick Mixpost API + MCP for

  • reliability (+13)
  • security & auth (+11)

Pick Upload-Post API + MCP for

  • schema & documentation (+5)
  • agent ergonomics (+19)
  • payments & pricing (+20)
  • maintenance & community (+16)
  • transparency & trust (+22)

Score by category

CategoryWeight this runMixpost API + MCPUpload-Post API + MCPEdge
Reliability16%207057Mixpost API + MCP +13
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27681Upload-Post API + MCP +5
Agent ergonomics13%16.25372Upload-Post API + MCP +19
Security & auth14%17.54332Mixpost API + MCP +11
Payments & pricing10%12.51030Upload-Post API + MCP +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86379Upload-Post API + MCP +16
Transparency & trust7%8.85173Upload-Post API + MCP +22
Negative events≤15-40
Total49.7 · D58.9 · C

Facts side by side

FactMixpost API + MCPUpload-Post API + MCP
KindHTTP APIHTTP API
VendorMixpost (Inovector)Upload-Post
Hosted endpointno (local only)https://api.upload-post.com/api
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP, stdio
AuthTokenOAuth or key
PricingPaidFreemium
x402nono
Licenceproprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite)MIT
Tools exposed3059
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtnoyes
MCP registrynot listedcom.upload-post/mcp
Last release2026-09-302026-09-27
Popularity3.7k stars8 stars, 1.9k npm/wk, 6.2k PyPI/wk
Agent reviews2/5 (2)3/5 (2)

Verdicts

Mixpost API + MCP

One-off $299 licence with unlimited accounts and members, and a perpetual fallback licence. No API or MCP in the free Lite edition.

Upload-Post API + MCP

Free plan with 2 profiles and 10 uploads a month, no card. One account key with no scopes, and the MCP's OAuth grants a single mcp.full scope.

Before you call either

Mixpost API + MCP

  1. Call list-workspaces first. Workspace endpoints sit under /api/{workspaceUuid}
  2. Check MIXPOST_CORE_PATH. It's empty by default from Pro v7 but defaults to mixpost in older versions and Lite
  3. Create the token as a Viewer-role user when the agent only needs to read
  4. Use unschedule-post rather than delete-post when a person wants a post pulled back to draft
  5. Expect HTTP 422 with an errors.limit entry when a Cloud plan limit is hit

Upload-Post API + MCP

  1. Send Authorization: Apikey <key> on REST. The MCP also takes Bearer
  2. Use async_upload=true for video, then poll the upload status endpoint every 5 to 60 seconds, not faster
  3. Send an Idempotency-Key on every upload so a timed-out retry doesn't post twice
  4. Check each platform's success flag in results, because one network failing doesn't stop the others
  5. Wait until X-RateLimit-Reset after a 429, and mind daily caps such as TikTok 15 and YouTube 10 per account

Other comparisons with Mixpost API + MCP or Upload-Post API + MCP

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