# Placid API + MCP vs PostNitro

> PostNitro scores 44.5 (E) to Placid's 42.9 (E) for design templates. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/placid-vs-postnitro
- Markdown: https://www.anchorterminal.com/compare/placid-vs-postnitro.md (~2,250 tokens)
- Slim: https://www.anchorterminal.com/compare/placid-vs-postnitro.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/placid-vs-postnitro.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
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-14

PostNitro scores 44.5 (E) on agent readiness against Placid API + MCP's 42.9 (E), and leads in 3 of 7 scored categories. Placid API + MCP leads on reliability, payments & pricing and transparency & trust. Both do design templates.

- Placid API + MCP: grade E, 42.9/100, rank #964 of 1084. Markdown https://www.anchorterminal.com/tools/placid.md · JSON https://www.anchorterminal.com/api/v1/tools/placid.json
- PostNitro: grade E, 44.5/100, rank #945 of 1084. Markdown https://www.anchorterminal.com/tools/postnitro.md · JSON https://www.anchorterminal.com/api/v1/tools/postnitro.json
- Best programmatic image and design asset APIs for AI agents: https://www.anchorterminal.com/best/design-assets/index.md
- All 55 assets comparisons: https://www.anchorterminal.com/compare/design-assets/index.md

## Which one, for what

### Placid API + MCP (E)

Good for: Small teams and no-code builders who want template renders to image, PDF and video at a low monthly price, and agents that should be fenced to a few templates.

Ahead on:
- Reliability, 75 against 42
- Payments & pricing, 35 against 20
- Transparency & trust, 57 against 48

Watch for: No OpenAPI, no llms.txt, and the MCP tool list isn't published

### PostNitro (E)

Good for: An agent that must produce a designed, on-brand carousel or slide video and book it on LinkedIn, Instagram, TikTok, Threads, Facebook Pages or Pinterest in one chain.

Ahead on:
- Schema & documentation, 77 against 34
- Agent ergonomics, 49 against 40
- Maintenance & community, 65 against 7

Watch for: No status page, incident history, SLA, security.txt or certification was found


## Score by category

| Category | Weight | Placid API + MCP | PostNitro | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 42 | Placid API + MCP +33 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 34 | 77 | PostNitro +43 |
| Agent ergonomics | 13% (16.2 this run) | 40 | 49 | PostNitro +9 |
| Security & auth | 14% (17.5 this run) | 34 | 30 | Placid API + MCP +4 |
| Payments & pricing | 10% (12.5 this run) | 35 | 20 | Placid API + MCP +15 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 7 | 65 | PostNitro +58 |
| Transparency & trust | 7% (8.8 this run) | 57 | 48 | Placid API + MCP +9 |
| Negative events | ≤15 | 0 | -2 | |
| **Total** | | **42.9 · E** | **44.5 · E** | |

## Facts side by side

| Fact | Placid API + MCP | PostNitro |
| --- | --- | --- |
| Kind | HTTP API | MCP server |
| Vendor | Placid | PostNitro Inc. |
| Hosted endpoint | `https://api.placid.app/api/rest` | `https://mcp.postnitro.ai/mcp` |
| Transports | HTTP, Streamable HTTP | Streamable HTTP, HTTP |
| Auth | API key | OAuth or key |
| Pricing | Paid | Paid |
| x402 | no | no |
| Licence | none | Proprietary hosted service under PostNitro's Terms of Service. The CLI, agent skill and agent plugin repositories are MIT |
| Tools exposed | none | 35 |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | none | 2026-10-07 |
| Terms last updated | 2024-11-25 | 2024-05-20 |
| Privacy policy last updated | 2024-11-18 | 2023-10-05 |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | yes |
| Arbitration or class-action waiver | not found in the text | not found in the text |
| Popularity | none | 2 stars, 200 npm/wk |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**Placid API + MCP.** Hyperping status page with separate App and API components and 90-day history. No OpenAPI, no llms.txt, and the MCP tool list isn't published.

**PostNitro.** A hosted MCP server and REST API let an agent turn a topic, article or own slides into a branded carousel, image or slide video and schedule it, with OAuth, numbered rate limits and Markdown docs. No status page, security contact or idempotency key was found, and the privacy policy contradicts the vendor's no-training statement.

## Before you call either

### Placid API + MCP

1. Send the token in the `Authorization` header, not as ?api_token=, wherever the client allows it
2. Read X-RateLimit-Remaining and wait for X-RateLimit-Reset after a 429
3. Use test mode for watermarked previews while matching layer names, then switch to live renders
4. Leave create_now off for batches, since it caps at 10 at once and may fail under load
5. Poll the returned polling_url or pass webhook_success, since images start as queued

### PostNitro

1. Call `postnitro_set_defaults` once with a template, brand and AI preset, or every generate call must carry those IDs
2. Pass the `designId` from `postnitro_get_output` to scheduling, never the `embedPostId`, or the call fails with `Design not found`
3. For a LinkedIn PDF post, set `linkedinPostSettings.postType` to `document` with a 5 to 90 character `postTitle`
4. Ask for the `DESIGN` output or save as `DRAFT` when a person must approve before anything publishes
5. Keep to 5 create calls a minute per key and wait for `Retry-After` on a 429

## Questions

### Which is better for AI agents, Placid API + MCP or PostNitro?

PostNitro scores 44.5 (E) on agent readiness against Placid API + MCP's 42.9 (E), and leads in 3 of 7 scored categories. Placid API + MCP leads on reliability, payments & pricing and transparency & trust.

### Do Placid API + MCP and PostNitro need an API key?

Placid API + MCP needs an API key. PostNitro takes an API key or an OAuth sign-in.

### Can an agent call Placid API + MCP and PostNitro without installing anything?

Yes. Placid API + MCP has a hosted endpoint at https://api.placid.app/api/rest and PostNitro at https://mcp.postnitro.ai/mcp.


## For agents

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

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