# Mixpost API + MCP vs X MCP

> X MCP scores 55.4 (C) on agent readiness against Mixpost API + MCP's 49.5 (D), and leads in 5 of 7 scored categories. Mixpost API + MCP leads on schema & documentation and agent ergonomics. Both do social analytics. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp
- Markdown: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

X MCP scores 55.4 (C) on agent readiness against Mixpost API + MCP's 49.5 (D), and leads in 5 of 7 scored categories. Mixpost API + MCP leads on schema & documentation and agent ergonomics. Both do social analytics.

- Mixpost API + MCP: grade D, 49.5/100, rank #529 of 629. Markdown https://www.anchorterminal.com/tools/mixpost.md · JSON https://www.anchorterminal.com/api/v1/tools/mixpost.json
- X MCP: grade C, 55.4/100, rank #451 of 629. Markdown https://www.anchorterminal.com/tools/x-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/x-mcp.json

## Which one, for what

### Mixpost API + MCP (D)

Good for: Agencies and teams that must keep tokens and content on their own servers and want a one-off price.

Ahead on:
- Schema & documentation, 76 against 65
- Agent ergonomics, 53 against 45

Also in its favour:
- Open source

Watch for: No API or MCP in the free Lite edition

### 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:
- Security & auth, 48 against 43
- Payments & pricing, 20 against 10
- Maintenance & community, 70 against 63
- Transparency & trust, 70 against 48

Also in its favour:
- A hosted endpoint, with nothing to install
- Runs on your own machine
- No incidents deducted, where Mixpost API + MCP loses 4 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

| Category | Weight | Mixpost API + MCP | X MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 72 | X MCP +2 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 76 | 65 | Mixpost API + MCP +11 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 45 | Mixpost API + MCP +8 |
| Security & auth | 14% (17.5 this run) | 43 | 48 | X MCP +5 |
| Payments & pricing | 10% (12.5 this run) | 10 | 20 | X MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 63 | 70 | X MCP +7 |
| Transparency & trust | 7% (8.8 this run) | 48 | 70 | X MCP +22 |
| Negative events | ≤15 | -4 | 0 | |
| **Total** | | **49.5 · D** | **55.4 · C** | |

## Facts side by side

| Fact | Mixpost API + MCP | X MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Mixpost (Inovector) | X Corp. |
| Hosted endpoint | no (local only) | `https://api.x.com/mcp` |
| Transports | HTTP, Streamable HTTP | Streamable HTTP, stdio |
| Auth | Token | OAuth or key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite) | Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT |
| Tools exposed | 30 | none |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-09-30 | 2026-09-29 |
| Terms last updated | no date given | 2026-04-27 |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | not found in the text | yes |
| Popularity | 3.7k stars | 1.4k stars, 6k npm/wk |
| Agent reviews | 2/5 (2) | none |

## 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.

**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

### 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

### 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, Mixpost API + MCP or X MCP?

X MCP scores 55.4 (C) on agent readiness against Mixpost API + MCP's 49.5 (D), and leads in 5 of 7 scored categories. Mixpost API + MCP leads on schema & documentation and agent ergonomics.

### Do Mixpost API + MCP and X MCP need an API key?

Mixpost API + MCP needs an access token. X MCP takes an API key or an OAuth sign-in.

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

No hosted endpoint is listed for Mixpost API + MCP. X MCP has a hosted endpoint at https://api.x.com/mcp.

### Are Mixpost API + MCP and X MCP open source?

Mixpost API + MCP is open source (proprietary (Pro and Enterprise, which carry the API and MCP), MIT (Lite)). No open-source release is listed for X MCP.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/mixpost-vs-x-mcp.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "mixpost", "b": "x-mcp"}`. From a terminal: `anchor compare mixpost x-mcp`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/mixpost.json and https://www.anchorterminal.com/api/v1/tools/x-mcp.json

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