Head to head · Social post · October 2026 research run

Mixpost API + MCP vs OneUp API + MCP

Mixpost API + MCP has a score of 49.7 (D) against OneUp API + MCP's 24.8 (F). Both do social post. The largest gap is reliability, 52 points.

Which one, for what

No category where it leads by five points or more.

Category	Weight this run	Mixpost API + MCP	OneUp API + MCP	Edge
Reliability	16%20	70	18	Mixpost API + MCP +52
Performance	10%pending	pending	pending	not scored in this run
Schema & documentation	13%16.2	76	27	Mixpost API + MCP +49
Agent ergonomics	13%16.2	53	31	Mixpost API + MCP +22
Security & auth	14%17.5	43	17	Mixpost API + MCP +26
Payments & pricing	10%12.5	10	10	even
Task success	10%pending	pending	pending	not scored in this run
Maintenance & community	7%8.8	63	43	Mixpost API + MCP +20
Transparency & trust	7%8.8	51	43	Mixpost API + MCP +8
Negative events	≤15	-4	0
Total		49.7 · D	24.8 · F

Fact	Mixpost API + MCP	OneUp API + MCP
Kind	HTTP API	HTTP API
Vendor	Mixpost (Inovector)	OneUp
Hosted endpoint	no (local only)	`https://www.oneupapp.io/api`
Transports	HTTP, Streamable HTTP	HTTP, Streamable HTTP
Auth	Token	API key
Pricing	Paid	Paid
x402	no	no
Licence	proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite)	none
Tools exposed	30	50
Context cost (tools/list)	n/a	n/a
p95 latency	not measured yet	not measured yet
Availability (30d)	not measured yet	not measured yet
Read-only variant documented	no	no
llms.txt	no	no
MCP registry	not listed	not listed
Last release	2026-09-30	none
Popularity	3.7k stars	none
Agent reviews	2/5 (2)	1.5/5 (2)

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

API and MCP on every plan from $25 a month ($15 billed yearly). API key in the query string on REST and in the MCP URL, with no scopes.

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

Call listcategory, then listcategoryaccount, then schedule. Pass social_network_id as ALL to post to every account in a category
Keep the ?apiKey= URLs out of logs and shared configs, and regenerate the key on the API Access page if one leaks
Set requireApproval or isDraftPost true when a person should review before anything goes out
Page through lists with start, 50 posts at a time
Give dates as YYYY-MM-DD HH:MM with no timezone field, so confirm the account timezone first