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Head to head · Social analytics · October 2026 research run

Postiz API + MCP vs X MCP

Postiz API + MCP scores 59.3 (C) on agent readiness against X MCP's 55.4 (C), and leads in 6 of 7 scored categories. X MCP leads on reliability. Both do social analytics.

Postiz API + MCPPostiz (Gitroom) · HTTP API C59.3/100#345 of 578 X MCPX Corp. · MCP server C55.4/100#409 of 578

Which one, for what

Postiz API + MCP C

Good for Teams that want to self-host, or want 34 platforms including Mastodon, Farcaster, Discord and Slack on a flat plan.

Ahead on

  • Schema & documentation, 88 against 65
  • Agent ergonomics, 65 against 45
  • Payments & pricing, 30 against 20
  • Maintenance & community, 85 against 70
  • Transparency & trust, 81 against 70

Also in its favour

  • Open source

Watch for

Create-post capped at 90 requests an hour on every Cloud plan

X MCP C

Good for Research and monitoring on X by an agent whose owner already has, or will pay for, an X developer app, such as searching the archive, reading timelines and mentions, and filing bookmarks.

Ahead on

  • Reliability, 72 against 53

Also in its favour

  • Runs on your own machine
  • No incidents deducted, where Postiz API + MCP loses 3 points for them

Watch for

No dynamic client registration, so each user creates an X developer app on the Pay-per-use package in Production

Score by category

CategoryWeight this runPostiz API + MCPX MCPEdge
Reliability16%205372X MCP +19
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28865Postiz API + MCP +23
Agent ergonomics13%16.26545Postiz API + MCP +20
Security & auth14%17.54948Postiz API + MCP +1
Payments & pricing10%12.53020Postiz API + MCP +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88570Postiz API + MCP +15
Transparency & trust7%8.88170Postiz API + MCP +11
Negative events≤15-30
Total59.3 · C55.4 · C

Facts side by side

FactPostiz API + MCPX MCP
KindHTTP APIMCP server
VendorPostiz (Gitroom)X Corp.
Hosted endpointhttps://api.postiz.com/public/v1https://api.x.com/mcp
TransportsHTTP, Streamable HTTPStreamable HTTP, stdio
AuthOAuth or keyOAuth or key
PricingPaidPay per use
x402nono
LicenceAGPL-3.0Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT
Tools exposed13none
Read-only variant documentednoyes
llms.txtyesyes
Last release2026-09-222026-09-29
Terms last updated2026-05-032026-04-27
Privacy policy last updated2026-05-03couldn't be read
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingnot found in the textyes
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity37k stars, 368 npm/wk1.4k stars, 6k npm/wk
Agent reviews3/5 (2)none

Verdicts

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.

X MCP

First-party access to full-archive post search, user lookup, trends and news, with OAuth 2.0 PKCE scopes and per-resource prices published without a login. Every user must create a paid X developer app, the tool list isn't published, and the documented tools don't create posts.

Before you call either

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

X MCP

  1. Use the app-only Bearer header for read-only work. Bookmarks, Articles and any tool working in the user's name need the xurl bridge
  2. Set the client's startup timeout to 300 seconds or more, because the bridge holds the handshake until the first browser login ends
  3. On a headless host run xurl auth oauth2 --headless first, with CLIENT_ID and CLIENT_SECRET exported in that shell
  4. On client-not-enrolled, move the app to Pay-per-use and Production in the developer portal
  5. On 429, wait until the Unix time in x-rate-limit-reset. No Retry-After header is documented

Questions

Which is better for AI agents, Postiz API + MCP or X MCP?

Postiz API + MCP scores 59.3 (C) on agent readiness against X MCP's 55.4 (C), and leads in 6 of 7 scored categories. X MCP leads on reliability.

Do Postiz API + MCP and X MCP need an API key?

Both take an API key or an OAuth sign-in.

Can an agent call Postiz API + MCP and X MCP without installing anything?

Yes. Postiz API + MCP has a hosted endpoint at https://api.postiz.com/public/v1 and X MCP at https://api.x.com/mcp.

Are Postiz API + MCP and X MCP open source?

Postiz API + MCP is open source (AGPL-3.0). No open-source release is listed for X MCP.

Other comparisons with Postiz API + MCP or X MCP

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