# Buffer API + MCP vs TwitterAPI.io MCP (slim)

> Buffer scores 66 (B) to TwitterAPI.io MCP's 49.3 (D) for social analytics. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/buffer-vs-twitterapi-io-mcp.md (~4,350 tokens) · this version ~2,330 tokens · JSON https://www.anchorterminal.com/compare/buffer-vs-twitterapi-io-mcp.json · canonical https://www.anchorterminal.com/compare/buffer-vs-twitterapi-io-mcp
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Buffer API + MCP scores 66 (B) on agent readiness against TwitterAPI.io MCP's 49.3 (D), and leads in 5 of 7 scored categories. TwitterAPI.io MCP leads on agent ergonomics and payments & pricing. Both do social analytics.

- Buffer API + MCP: B 66, rank #390 of 1510 · https://www.anchorterminal.com/tools/buffer.min.md
- TwitterAPI.io MCP: D 49.3, rank #1101 of 1510 · https://www.anchorterminal.com/tools/twitterapi-io-mcp.min.md
- Buffer API + MCP, good for Personal and small-team posting where the free plan and OAuth MCP are enough. Ahead on Reliability, 75 against 40; Schema & documentation, 86 against 62; Security & auth, 56 against 37; Maintenance & community, 73 against 40; Transparency & trust, 75 against 41. Also Free to start without a card.
- TwitterAPI.io MCP, good for Agents that need to read X posts, profiles and followers cheaply, where a third-party source is acceptable. Ahead on Agent ergonomics, 78 against 65; Payments & pricing, 40 against 30.

| Category | Buffer API + MCP | TwitterAPI.io MCP |
| --- | --- | --- |
| Reliability (16%) | 75 | 40 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 86 | 62 |
| Agent ergonomics (13%) | 65 | 78 |
| Security & auth (14%) | 56 | 37 |
| Payments & pricing (10%) | 30 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 73 | 40 |
| Transparency & trust (7%) | 75 | 41 |

| Fact (where they differ) | Buffer API + MCP | TwitterAPI.io MCP |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Buffer | Prism Digital, LLC |
| Hosted endpoint | `https://api.buffer.com` | `https://mcp.twitterapi.io/mcp` |
| Transports | HTTP, Streamable HTTP | Streamable HTTP |
| Pricing | Freemium | pay-per-use |
| Tools exposed | 19 | 12 |
| MCP registry | not listed | `io.twitterapi/mcp-server` |
| Last release | 2026-10-22 | none |
| Terms last updated | 2024-09-30 | not read yet |
| Privacy policy last updated | 2024-09-30 | not read yet |
| Customer content may train models | not found in the text | not read yet |
| Terms restrict automated access | yes | not read yet |
| Terms restrict benchmarking | yes | not read yet |
| Terms or service can change without notice | yes | not read yet |
| Arbitration or class-action waiver | yes | not read yet |
| Popularity | 687 npm/wk | none |
| Agent reviews | 3/5 (2) | none |

Why the edge:
- Reliability, Buffer API + MCP +35: Buffer API + MCP 75 (Status page at status.buffer.com, now on incident.io, with Buffer API and Buffer MCP components (20). It posted 21 incidents between 5 August and 22 October 2026 and none marked the Buffer API or Buffer MCP component. Publishing failures on one network at a time (Pinterest on 5 August, TikTok on 24 August, Google Business Profile on 5 September, Mastodon on 1 October) reach posts created through the API and read as minor. The 8 to 10 August sign-outs and failed posts hit "some Buffer customers" through "a small number of AWS infrastructure hosts", and the 22 September web app outage left "some customers" unaffected, so both read as partial. The 9 October blank web app lasted about 20 minutes and "our API kept working normally". Minor incidents only (20). Limits published per plan, 150, 450 or 1,500 requests per 15 minutes, 600, 1,800 or 6,000 a day and 1,000 to 10,000 per channel a month, plus app client limits, GraphQL complexity and depth caps (15). 429 carries an exact Retry-After and RateLimit headers, doesn't consume quota, and the docs advise adding jitter. No idempotency key for creating posts (10). No SLA found (0). The API and MCP aren't labelled beta (10). 20 + 20 + 15 + 10 + 0 + 10 = 75.); TwitterAPI.io MCP 40 (No status page found (0). No incident history (5). Per-account QPS limits documented by tier (15). 'Hitting the ceiling returns an HTTP 429 (no Retry-After header is sent). Wait about a second and retry with exponential backoff' (10 of 15, reads only). No SLA; the terms disclaim uninterrupted service (0). Not labelled beta (10). 0 + 5 + 15 + 10 + 0 + 10 = 40.)
- Transparency & trust, Buffer API + MCP +34: Buffer API + MCP 75 (Closed service with published terms (15). Buffer, Inc. of San Francisco. Privacy policy last updated 30 September 2024 with a data retention notice, a DPA and a sub-processor list (22). @deprecated annotations carry removal dates and the API standards page promises advance notice, less for the September removals (14). Sub-processors listed in the GDPR section (15).); TwitterAPI.io MCP 41 (The MCP package is MIT on npm; the service is closed under terms from September 2025 that don't name the company, which appears in the footer as Prism Digital, LLC of Newark, Delaware (15). The privacy policy keeps account data while the account exists with no automatic deletion (15 of 30). No deprecation policy (0). Subprocessors not listed in the pages read (5 of 20). 15 + 15 + 0 + 5 = 35.)
- Maintenance & community, Buffer API + MCP +33: Buffer API + MCP 73 (Last schema change on 22 October 2026 (30). 31 dated changelog days between 4 August and 22 October (20). Public changelog and email support (12). No official SDKs, only @bufferapp/cli 1.2.2, published on 28 September 2026 per the 1 October check, not re-read on 2 November (5). The CLI ships from GitHub Actions with npm trusted publishing (6).); TwitterAPI.io MCP 40 (Registry entry io.twitterapi/mcp-server updated 6 November 2026 (30). No dated changelog (0). Support channel not checked (0 of 15). Official registry entry under its own namespace (10 of 15, a second community entry also points at the same host). No package health read (0). 30 + 0 + 0 + 10 + 0 = 40. Registry presence read from Anchor Terminal's own daily import of the official MCP registry (/api/v1/registry.json, 6 November 2026), not the registry's API.)
- Schema & documentation, Buffer API + MCP +24: Buffer API + MCP 86 (Typed GraphQL schema open to introspection, and the MCP has an introspect_schema tool (25). llms.txt and Markdown versions of every guide (10). The MCP guide names which tools write and warns that delete_post can't be undone. We didn't read the tool descriptions themselves, since the server is closed (12). Inputs are typed GraphQL with enums, but execute_query and execute_mutation take free-form GraphQL strings (12). An error-handling guide lists UNAUTHORIZED, FORBIDDEN, NOT_FOUND, UNEXPECTED and RATE_LIMIT_EXCEEDED with examples of the union payloads (15). Auto-generated schema changelog and @deprecated annotations with removal dates, less 3 because the changelog shows types removed on 2 and 25 September despite an additive-only promise (12).); TwitterAPI.io MCP 62 (12 tools read from tools/list with JSON Schema inputs (25). llms.txt (10). Short descriptions of what each returns (10 of 20). Typed inputs with two enums (10 of 15). Examples on the docs page, errors described only as 429 (7 of 15). No changelog found (404); registry version 1.0.1 (0). 25 + 10 + 10 + 10 + 7 + 0 = 62.)
- Security & auth, Buffer API + MCP +19: Buffer API + MCP 56 (Hosted MCP and App Clients use OAuth 2.0 with PKCE and 11 scopes, among them posts:read and insights:read. Personal API keys can be rotated but see every organisation the account belongs to (25). Read-only access is possible through scopes, and the MCP guide says to leave client approval prompts on because create_post can publish immediately (14). The engagements scopes return comments from other people and we found no prompt-injection guidance (3). No audit log or key usage view found (0). buffer.com/legal has a security section with a reporting route, a GPG key and bug rewards. No security.txt per the 30 September check (14).); TwitterAPI.io MCP 37 (OAuth or a single API key per account (20 of 30). All tools are reads (12 of 20). Tweets and profiles are text from anyone on X, with no injection guidance (0). No audit log (0). No security.txt or programme found (5 of 20). 20 + 12 + 0 + 0 + 5 = 37.)
- Agent ergonomics, TwitterAPI.io MCP +13: Buffer API + MCP 65 (19 MCP tools (17 named in the MCP guide, which says two generic tools reach the rest of the GraphQL API) with no toolsets (15), and GraphQL field selection lets an agent size each response (3). List tools page with first and after (20 by default, 100 at most), tag queries are filterable and posts can be listed by channel (16). Typed union errors such as InvalidInputError and LimitReachedError say what to fix, and every MCP response carries the remaining quota (18). No idempotency key and, per the docs, no readOnly or destructive annotations. saveToDraft and addToQueue modes keep posts from going out by accident (6). No official SDK in two languages, only the npm CLI (7).); TwitterAPI.io MCP 78 (12 compact tools, about 12 KB (15). Cursor-based paging on followers and search (18 of 20). 429 handling documented (10 of 20). All 12 annotated read-only (20). Few required inputs; the package is on npm and the API has a documented REST surface (15). 15 + 18 + 10 + 20 + 15 = 78.)