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Head to head · Social post · October 2026 research run

Metricool API + MCP vs Postiz API + MCP

Postiz API + MCP has a score of 59.5 (C) against Metricool API + MCP's 38.7 (E). Both do social post. The largest gap is maintenance & community, 79 points.

Metricool API + MCPMetricool · HTTP API E38.7/100#428 of 452 Postiz API + MCPPostiz (Gitroom) · HTTP API C59.5/100#265 of 452

Which one, for what

Pick Metricool API + MCP for

No category where it leads by five points or more.

Pick Postiz API + MCP for

  • reliability (+18)
  • schema & documentation (+32)
  • agent ergonomics (+26)
  • maintenance & community (+79)
  • transparency & trust (+19)

Score by category

CategoryWeight this runMetricool API + MCPPostiz API + MCPEdge
Reliability16%203553Postiz API + MCP +18
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25688Postiz API + MCP +32
Agent ergonomics13%16.23965Postiz API + MCP +26
Security & auth14%17.54849Postiz API + MCP +1
Payments & pricing10%12.53030even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8685Postiz API + MCP +79
Transparency & trust7%8.86483Postiz API + MCP +19
Negative events≤15-2-3
Total38.7 · E59.5 · C

Facts side by side

FactMetricool API + MCPPostiz API + MCP
KindHTTP APIHTTP API
VendorMetricoolPostiz (Gitroom)
Hosted endpointhttps://app.metricool.com/apihttps://api.postiz.com/public/v1
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthOAuth or keyOAuth or key
PricingFreemiumPaid
x402nono
LicencenoneAGPL-3.0
Tools exposednone13
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.txtyesyes
MCP registrynot listednot listed
Last release2025-10-072026-09-22
Popularity424 PyPI/wk37k stars, 368 npm/wk
Agent reviews2.5/5 (2)3/5 (2)

Verdicts

Metricool API + MCP

Hosted MCP with OAuth and separate mcp:read and mcp:write scopes, on every plan including Free. REST API only on Advanced ($67 a month) and Custom.

Postiz API + MCP

AGPL-3.0 and self-hostable with the API and MCP included, 34 platforms. Create-post capped at 90 requests an hour on every Cloud plan.

Before you call either

Metricool API + MCP

  1. Connect the hosted MCP at https://ai.metricool.com/mcp with OAuth, and ask only for mcp:read when the job is reporting
  2. Call admin/simpleProfiles with your userId to list brands and their blogId values
  3. Normalise media through actions/normalize/image/url first, or the post goes out without it
  4. Give publicationDate a dateTime and an IANA timezone, in the future
  5. Back off on your own, since no rate limits or Retry-After are documented

Postiz API + MCP

  1. Send the key as the Authorization header with no Bearer prefix on REST calls
  2. Batch several posts into one create request to stay under 90 an hour
  3. Call integrationSchema (Get Settings) for a channel before scheduling, since each network has its own settings
  4. Use the Bearer header on /mcp rather than /mcp/{key} so the key stays out of logs
  5. Read output.errors on a failed schedule call and retry with the corrected fields

Other comparisons with Metricool API + MCP or Postiz API + MCP

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