# Publer API + MCP vs X MCP

> X MCP scores 55.4 (C) on agent readiness against Publer API + MCP's 46.8 (D), and leads in 6 of 7 scored categories. Publer API + MCP leads on agent ergonomics. Both do social analytics. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/publer-vs-x-mcp
- Markdown: https://www.anchorterminal.com/compare/publer-vs-x-mcp.md (~2,150 tokens)
- Slim: https://www.anchorterminal.com/compare/publer-vs-x-mcp.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/publer-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 Publer API + MCP's 46.8 (D), and leads in 6 of 7 scored categories. Publer API + MCP leads on agent ergonomics. Both do social analytics.

- Publer API + MCP: grade D, 46.8/100, rank #556 of 629. Markdown https://www.anchorterminal.com/tools/publer.md · JSON https://www.anchorterminal.com/api/v1/tools/publer.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

### Publer API + MCP (D)

Good for: Agencies already on Publer Business who want an agent to schedule in bulk and read deep analytics, including competitors.

Ahead on:
- Agent ergonomics, 55 against 45

Watch for: API and MCP only on Business and Enterprise, and the free plan has no API

### 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 60
- Schema & documentation, 65 against 46
- Security & auth, 48 against 41
- Payments & pricing, 20 against 15
- Maintenance & community, 70 against 41

Also in its favour:
- Runs on your own machine

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 | Publer API + MCP | X MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 72 | X MCP +12 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 46 | 65 | X MCP +19 |
| Agent ergonomics | 13% (16.2 this run) | 55 | 45 | Publer API + MCP +10 |
| Security & auth | 14% (17.5 this run) | 41 | 48 | X MCP +7 |
| Payments & pricing | 10% (12.5 this run) | 15 | 20 | X MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 41 | 70 | X MCP +29 |
| Transparency & trust | 7% (8.8 this run) | 66 | 70 | X MCP +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **46.8 · D** | **55.4 · C** | |

## Facts side by side

| Fact | Publer API + MCP | X MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Publer | X Corp. |
| Hosted endpoint | `https://app.publer.com/api/v1` | `https://api.x.com/mcp` |
| Transports | HTTP | Streamable HTTP, stdio |
| Auth | API key | OAuth or key |
| Pricing | Paid | Pay per use |
| x402 | no | no |
| Licence | none | Proprietary hosted server under the X Developer Agreement. The xurl bridge on GitHub and npm is MIT |
| Read-only variant documented | no | yes |
| llms.txt | yes | yes |
| Last release | none | 2026-09-29 |
| Terms last updated | couldn't be read | 2026-04-27 |
| Privacy policy last updated | couldn't be read | couldn't be read |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | not found in the text |
| Arbitration or class-action waiver | couldn't be read | yes |
| Popularity | none | 1.4k stars, 6k npm/wk |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Publer API + MCP.** Scoped API keys (workspaces, accounts, posts, media, analytics) with 401 and 403 errors that name the missing scope or header. API and MCP only on Business and Enterprise, and the free plan has no API.

**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

### Publer API + MCP

1. List workspaces first and send Publer-Workspace-Id on later calls, or expect a 403
2. Poll /job_status/{job_id} after posts/schedule and read payload.failures, since status reads complete even when posts failed
3. Use the Bearer-API scheme, not Bearer
4. Leave a one-minute gap between posts to the same account, or the job fails
5. Read X-RateLimit-Reset after a 429 and wait until then, as there's no Retry-After

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

X MCP scores 55.4 (C) on agent readiness against Publer API + MCP's 46.8 (D), and leads in 6 of 7 scored categories. Publer API + MCP leads on agent ergonomics.

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

Publer API + MCP needs an API key. X MCP takes an API key or an OAuth sign-in.

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

Yes. Publer API + MCP has a hosted endpoint at https://app.publer.com/api/v1 and X MCP at https://api.x.com/mcp.


## For agents

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

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