Head to head · Design templates · October 2026 research run

Placid API + MCP vs Robolly

Robolly scores 48.4 (D) on agent readiness against Placid API + MCP's 43 (E), and leads in 3 of 7 scored categories. Placid API + MCP leads on reliability and transparency & trust. Both do design templates.

Best programmatic image and design asset APIs for AI agents · All 153 assets comparisons

Which one, for what

Placid API + MCP E

Best 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 48
  • Transparency & trust, 58 against 49

Watch for

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

Robolly D

Best for Template-driven images, PDFs and short videos for marketers and developers who want a hosted editor and simple synchronous calls.

Ahead on

  • Schema & documentation, 57 against 34
  • Agent ergonomics, 75 against 40
  • Security & auth, 47 against 34

Also in its favour

  • Free to start without a card

Watch for

No OpenAPI or other machine-readable contract found

Why the edge

Each category where one leads by five points or more, with the reason behind each side's score from its assessment. The numbers are in the table below; this is what they stand for.

Agent ergonomics Robolly +35

Placid API + MCP 40

Image, PDF and video objects are small and the MCP can be limited to chosen templates and creative types (15). We found no pagination or filter parameters on the pages we read (5). Six status codes documented without an error body format (10). No idempotency key, no MCP tool annotations we could see, and DELETE removes an image for good. Polling the polling_url is safe (3). Only template_uuid is required, but the official libraries are PHP and Laravel only, both last tagged v1.0.1 on 2022-07-20 (7).

Robolly 75

Nine MCP tools (25). The renders list pages with a cursor, and templates are found by name (14 of 20). Errors carry errorCode and developerMessage with eight documented codes (17 of 20). Identical renders are cached for 45 days, so repeats are free and safe, the MCP server has no delete tool, and annotations couldn't be read on the closed server (12 of 20). Renders return the file synchronously by default, but there's no SDK (7 of 15). 25 + 14 + 17 + 12 + 7 = 75.

Reliability Placid API + MCP +27

Placid API + MCP 75

Hyperping status page at status.placid.app with separate App and API components and 90-day bars (20). No incidents are posted. The page's own figure for the API is 99.963 per cent over 90 days, roughly 48 minutes of recorded downtime with no write-up, so minor rather than clean (20). 60 requests a minute and 10 simultaneous create_now requests, documented (15). X-RateLimit-Limit, -Remaining and -Reset headers and exponential backoff advice on 429, but no idempotency key or safe-retry note for renders, which are writes (10). No SLA found on the pricing page or in the docs (0). REST API 2.0 is GA (10).

Robolly 48

Hosted lines. The footer links an UptimeRobot status page, but it loads its figures from /api/, which stats.uptimerobot.com's robots.txt disallows, so the page showed no monitors or history (10 of 20 for a page that exists) and no history was read (5). A hard limit of 3 renders a second is published (15). The rate-limit error code and advice to send renders one at a time, and identical renders are cached for 45 days at no cost, which makes a retry safe; there's no Retry-After or backoff interval (8 of 15). No SLA found (0). The API isn't labelled beta (10). 10 + 5 + 15 + 8 + 0 + 10 = 48.

Schema & documentation Robolly +23

Placid API + MCP 34

No OpenAPI or other machine-readable contract, and the MCP tool definitions aren't published (0). /llms.txt returns 404 (0). Endpoint pages state purpose and warn that create_now may fail under high load (12). template_uuid is the one required field and status is an enum, but layers and modifications are open objects keyed by layer name (8). Request and response examples per endpoint, and an error page with six codes but no body format (9). Docs are versioned 2.0, but the changelog on Headway carries no dates and its newest entries predate the MCP server (5).

Robolly 57

No OpenAPI or other machine-readable contract found for the REST API, and the MCP server is closed. The MCP page lists all nine tools and get_template_modifications returns each template's keys, constraints and examples at run time (8 of 25, on that partial evidence). llms.txt indexes the docs (10). The MCP page says what each tool does, which tools change templates or spend credits, and that there is no delete tool (14 of 20). Modification keys follow {element-name}.{modification-key} with constraints from the template rather than a fixed schema (7 of 15). Request examples throughout and an error code table with eight codes (13 of 15). /v1 paths with no changelog (5 of 15). 8 + 10 + 14 + 7 + 13 + 5 = 57.

Security & auth Robolly +13

Placid API + MCP 34

One bearer token per project, no scopes, and the docs say nothing on revoking or rotating it (15). The MCP setup guide documents ?api_token= in the server URL for clients that can't set headers, less 10 (5). MCP settings restrict which templates and which output types (image, PDF, video, docs only) the server can use (14). Returns renders from your own templates (10). A dashboard activity log is mentioned in the changelog, nothing per call documented (5). No security.txt (404), no certification in the privacy policy and no disclosure policy found (0).

Robolly 47

Bearer API key, signed render links, and MCP OAuth with one robolly:mcp scope limited to the organisation the user approves. Connections are listed and revoked under Connected AI Tools, and the API key is never shared with an OAuth client. No key scopes or rotation documented (22 of 30). The MCP server can create and update templates but not delete them; there's no read-only mode (10 of 20). Tools return the user's templates and public gallery designs (10 of 15). A renders list and the connected-tools view give some visibility, with no audit log documented (5 of 15). No security.txt (the path returns the site's HTML shell), disclosure policy, bug bounty or certification (0). 22 + 10 + 10 + 5 + 0 = 47.

Transparency & trust Placid API + MCP +9

Placid API + MCP 58

Closed service under published terms, per the 30 September check (15). Privacy policy updated 18 November 2024, a DPA on request, and raw request data kept 'for a limited amount of time' with no period stated (12). No deprecation policy or dated notices. The old changelog says v1 remains functional (3). Subprocessor categories only, with 'We don't publish further details of our data processors', and no hosting location (3).

Robolly 49

Closed service under terms effective 8 April 2026 from Avantis Innovations LLC in Wyoming. The terms can change without notice (15). The privacy policy of the same date covers Google sign-in and Sheets data, says spreadsheet rows aren't kept beyond a render and account data is deleted with the account, and otherwise names no periods (10 of 30). No deprecation policy or notices (0). Hosting is described only as third-party vendors, with no processors or locations named, while the footer says Made in EU (2 of 20). 15 + 10 + 0 + 2 = 27.

Score by category

CategoryWeight this runPlacid API + MCPRobollyEdge
Reliability16%207548Placid API + MCP +27
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.23457Robolly +23
Agent ergonomics13%16.24075Robolly +35
Security & auth14%17.53447Robolly +13
Payments & pricing10%12.53535even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.875Placid API + MCP +2
Transparency & trust7%8.85849Placid API + MCP +9
Negative events≤1500
TotalE 43/100D 48.4/100

Facts side by side

FactPlacid API + MCPRobolly
KindHTTP APIHTTP API
VendorPlacidAvantis Innovations LLC (Robolly)
Hosted endpointhttps://api.placid.app/api/resthttps://api.robolly.com/v1
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthAPI keyOAuth or key
PricingPaidPaid
x402nono
LicencenoneClosed service under the Robolly terms of use (effective 8 April 2026)
Tools exposednone9
Read-only variant documentednono
llms.txtnoyes
Terms last updated2024-11-252026-04-08
Privacy policy last updated2024-11-182026-04-08
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textnot found in the text
Terms restrict benchmarkingnot found in the textnot found in the text
Terms or service can change without noticeyesyes
Arbitration or class-action waivernot found in the textyes
Agent reviews3.5/5 (2)none

How the scores have moved

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.

Robolly

Robolly's nine MCP tools, synchronous renders, typed error codes and free cached re-renders keep template rendering cheap and predictable for an agent, and OAuth connections can be revoked per client. There is no OpenAPI file, changelog or dated release, and API access starts at $39 a month after a 7-day trial.

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

Robolly

  1. Call get_template_modifications before render to learn the keys a template accepts
  2. Send renders one at a time; the API refuses more than 3 a second with rate-limit
  3. Repeat an identical render freely; it is cached for 45 days and costs nothing
  4. Poll get_render after render_video, since video renders are queued
  5. Stop on render-limit-exhausted and tell the user the monthly credits are spent

Questions

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

Robolly scores 48.4 (D) on agent readiness against Placid API + MCP's 43 (E), and leads in 3 of 7 scored categories. Placid API + MCP leads on reliability and transparency & trust.

Do Placid API + MCP and Robolly need an API key?

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

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

Yes. Placid API + MCP has a hosted endpoint at https://api.placid.app/api/rest and Robolly at https://api.robolly.com/v1.

Other comparisons with Placid API + MCP or Robolly

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