# Post Bridge API + MCP vs Sprout Social API

> Sprout Social scores 54.7 (C) to Post Bridge's 48.3 (D) for social analytics. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/post-bridge-vs-sprout-social
- Markdown: https://www.anchorterminal.com/compare/post-bridge-vs-sprout-social.md (~2,650 tokens)
- Slim: https://www.anchorterminal.com/compare/post-bridge-vs-sprout-social.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/post-bridge-vs-sprout-social.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: 2026-10-09

Sprout Social API scores 54.7 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema & documentation and maintenance & community. Both do social analytics.

- Post Bridge API + MCP: grade D, 48.3/100, rank #816 of 950. Markdown https://www.anchorterminal.com/tools/post-bridge.md · JSON https://www.anchorterminal.com/api/v1/tools/post-bridge.json
- Sprout Social API: grade C, 54.7/100, rank #679 of 950. Markdown https://www.anchorterminal.com/tools/sprout-social.md · JSON https://www.anchorterminal.com/api/v1/tools/sprout-social.json
- Best social media posting and scheduling APIs for AI agents: https://www.anchorterminal.com/best/social-media/index.md
- All 103 social comparisons: https://www.anchorterminal.com/compare/social-media/index.md

## Which one, for what

### Post Bridge API + MCP (D)

Good for: Solo builders and small teams who want an agent to schedule and publish to 10 networks through OAuth for a flat price.

Ahead on:
- Schema & documentation, 72 against 51
- Maintenance & community, 76 against 38

Watch for: Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only

### Sprout Social API (C)

Good for: Reporting agents that pull profile, post, inbox, listening and case data for a company that already pays for Sprout Social, and for drafting posts a person will approve.

Ahead on:
- Reliability, 71 against 35
- Security & auth, 61 against 44
- Payments & pricing, 20 against 15
- Transparency & trust, 70 against 41

Watch for: Posts can be created only as drafts (`is_draft: true`), so the API cannot publish or schedule a post without a person in Sprout


## Score by category

| Category | Weight | Post Bridge API + MCP | Sprout Social API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 71 | Sprout Social API +36 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 72 | 51 | Post Bridge API + MCP +21 |
| Agent ergonomics | 13% (16.2 this run) | 60 | 59 | Post Bridge API + MCP +1 |
| Security & auth | 14% (17.5 this run) | 44 | 61 | Sprout Social API +17 |
| Payments & pricing | 10% (12.5 this run) | 15 | 20 | Sprout Social API +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 76 | 38 | Post Bridge API + MCP +38 |
| Transparency & trust | 7% (8.8 this run) | 41 | 70 | Sprout Social API +29 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.3 · D** | **54.7 · C** | |

## Facts side by side

| Fact | Post Bridge API + MCP | Sprout Social API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Post Bridge | Sprout Social, Inc. |
| Hosted endpoint | `https://api.post-bridge.com/v1` | `https://api.sproutsocial.com` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | MIT | Proprietary service under the Sprout Social Developer Terms and Terms of Service |
| Tools exposed | 16 | none |
| Read-only variant documented | yes | no |
| llms.txt | yes | no |
| MCP registry | `io.github.jackfriks/post-bridge` | not listed |
| Last release | 2026-09-09 | 2026-10-06 |
| Terms last updated | 2026-10-07 | 2024-05-09 |
| Privacy policy last updated | 2026-10-05 | 2026-09-16 |
| Customer content may train models | not found in the text | not found in the text |
| Terms restrict automated access | not found in the text | yes |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | 17 stars, 51 npm/wk | none |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**Post Bridge API + MCP.** Hosted MCP with OAuth 2.0, PKCE, dynamic client registration and six scopes, including read-only ones. Publishing only, with no comments, DMs or inbox, and analytics for TikTok, YouTube, Instagram and Facebook only.

**Sprout Social API.** The API reads analytics, inbox messages, listening topics and cases across the main networks, with OAuth client credentials, field selection and a dated changelog. It creates draft posts only, so a person must publish them in Sprout. Access needs the Advanced plan at $399 per seat a month, and no OpenAPI file or SDK was found.

## Before you call either

### Post Bridge API + MCP

1. Call list_social_accounts first, upload media, then create_post. Omit scheduled_at to publish at once
2. Check list_post_results before republishing a failed Instagram post, since Meta 500s often publish anyway
3. Set is_draft true when a person should approve the post
4. Put links for X in a reply, because captions sent to X lose their URLs
5. Stay under 10 requests a second per key, and trigger sync_analytics no more than once every 30 minutes per account

### Sprout Social API

1. Call `GET /v1/metadata/client` first for the customer ID, then `GET /v1/<customer ID>/metadata/customer` for profile and group IDs. Every other path needs them
2. Send `is_draft: true` on `POST /v1/<customer ID>/publishing/posts`. Tell the user the draft waits in the Sprout calendar for a person to publish
3. Name the `fields` you want on messages and posts requests. Without the list only `guid` comes back
4. Stay under 60 requests a minute and 250,000 a month, and back off on 429 on your own because no `Retry-After` is documented
5. Check the response when a draft names several profiles. A profile that cannot take the attached media is dropped with no error

## Questions

### Which is better for AI agents, Post Bridge API + MCP or Sprout Social API?

Sprout Social API scores 54.7 (C) on agent readiness against Post Bridge API + MCP's 48.3 (D), and leads in 4 of 7 scored categories. Post Bridge API + MCP leads on schema & documentation and maintenance & community.

### Do Post Bridge API + MCP and Sprout Social API need an API key?

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

### Can an agent call Post Bridge API + MCP and Sprout Social API without installing anything?

Yes. Post Bridge API + MCP has a hosted endpoint at https://api.post-bridge.com/v1 and Sprout Social API at https://api.sproutsocial.com.


## For agents

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

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