# Contentstack vs Storyblok

> Storyblok scores 67.7 (B) on agent readiness against Contentstack's 64 (B), and leads in 5 of 7 scored categories. Contentstack leads on schema & documentation. Both do cms content. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/contentstack-vs-storyblok
- Markdown: https://www.anchorterminal.com/compare/contentstack-vs-storyblok.md (~2,150 tokens)
- Slim: https://www.anchorterminal.com/compare/contentstack-vs-storyblok.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/contentstack-vs-storyblok.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

Storyblok scores 67.7 (B) on agent readiness against Contentstack's 64 (B), and leads in 5 of 7 scored categories. Contentstack leads on schema & documentation. Both do cms content.

- Contentstack: grade B, 64/100, rank #264 of 629. Markdown https://www.anchorterminal.com/tools/contentstack.md · JSON https://www.anchorterminal.com/api/v1/tools/contentstack.json
- Storyblok: grade B, 67.7/100, rank #188 of 629. Markdown https://www.anchorterminal.com/tools/storyblok.md · JSON https://www.anchorterminal.com/api/v1/tools/storyblok.json

## Which one, for what

### Contentstack (B)

Good for: Teams already on Contentstack, or starting on its free plan, who want an agent to draft, localise, release and publish structured content with scoped credentials and an audit trail.

Ahead on:
- Schema & documentation, 77 against 68

Also in its favour:
- Runs on your own machine

Watch for: The MCP server's default group loads 78 tools, including nine deletes, with no readOnlyHint or destructiveHint annotations and no read-only switch

### Storyblok (B)

Good for: Teams already on Storyblok who want an agent to draft, translate and publish stories or change component schemas under scoped, per-space permissions.

Ahead on:
- Reliability, 79 against 71
- Agent ergonomics, 78 against 67
- Payments & pricing, 35 against 30
- Transparency & trust, 80 against 73

Watch for: The Management API's OpenAPI spec sits in a private repository. Only the Content Delivery API has a public spec (OpenAPI 3.1, 14 operations)


## Score by category

| Category | Weight | Contentstack | Storyblok | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 71 | 79 | Storyblok +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 68 | Contentstack +9 |
| Agent ergonomics | 13% (16.2 this run) | 67 | 78 | Storyblok +11 |
| Security & auth | 14% (17.5 this run) | 69 | 73 | Storyblok +4 |
| Payments & pricing | 10% (12.5 this run) | 30 | 35 | Storyblok +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 80 | Contentstack +2 |
| Transparency & trust | 7% (8.8 this run) | 73 | 80 | Storyblok +7 |
| Negative events | ≤15 | -3 | -3 | |
| **Total** | | **64 · B** | **67.7 · B** | |

## Facts side by side

| Fact | Contentstack | Storyblok |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Contentstack Inc. | Storyblok GmbH |
| Hosted endpoint | `https://api.contentstack.io` | `https://mapi.storyblok.com/v1` |
| Transports | HTTP, stdio | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary service under Contentstack's Master Agreement and Terms of Service. The OpenAPI files, the management SDKs, the CLI and the @contentstack/mcp package are MIT | Proprietary service under Storyblok's terms. The SDKs, API clients and CLI in storyblok/monoblok are MIT |
| Tools exposed | 206 | 7 |
| Read-only variant documented | yes | no |
| llms.txt | yes | yes |
| Last release | 2026-09-22 | 2026-10-02 |
| Terms last updated | 2022-08-01 | couldn't be read |
| Privacy policy last updated | 2026-06-30 | 2025-10-06 |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Popularity | 44k npm/wk, 1.5k PyPI/wk | 68 stars, 433k npm/wk |

## Verdicts

**Contentstack.** The Content Management API has a public OpenAPI file, OAuth scopes that separate read, write and publish, read-only management tokens and a stack audit log. A free plan needs no card. The MCP server loads 78 tools by default with no annotations or read-only switch, and the `limit=0` behaviour changed on 11 September 2026 without advance notice.

**Storyblok.** The hosted MCP server covers the whole Management API with seven tools, OAuth scopes split into read, write and publish per space, and a confirmation step on deletes. The Management API has no public OpenAPI spec, no idempotency keys and no monitor on the public status page, and publishing is a GET request.

## Before you call either

### Contentstack

1. Pick the base URL for the stack's region first. North America on AWS is https://api.contentstack.io, and the other six regions use contentstack.com hosts
2. Send `api_key` and `authorization` headers on every Content Management API call. Ask for a read-only management token when the task only reads
3. Page with `limit` (100 at most), `skip` and `include_count=true`. `limit=0` no longer returns everything
4. Stay under 10 reads and 10 writes a second per organisation, and one bulk request a second. Watch `X-RateLimit-Remaining` and back off on 429
5. Start the MCP server with `--groups cma` only, and add `cma-extended` when the task needs audit logs or version history. Publishing and deleting need no confirmation

### Storyblok

1. Pick the base URL by the space's region (mapi.storyblok.com for the EU, api-us, api-ca or api-ap otherwise). A token sent to the wrong region fails
2. Create stories without `publish` to keep them as drafts, then call the publish endpoint. It is a GET, so never prefetch or blindly retry it
3. Write translations as `field__i18n__<code>` keys inside the same content object, and set the component field to translatable first
4. Upload an asset in three steps (signed response, POST to S3, finish upload). Through MCP the S3 step needs shell access for curl
5. Stay under 3 calls a second on Starter and 6 on paid plans, and back off exponentially on 429. Saves that break a field's max_length return 422

## Questions

### Which is better for AI agents, Contentstack or Storyblok?

Storyblok scores 67.7 (B) on agent readiness against Contentstack's 64 (B), and leads in 5 of 7 scored categories. Contentstack leads on schema & documentation.

### Do Contentstack and Storyblok need an API key?

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

### Can an agent call Contentstack and Storyblok without installing anything?

Yes. Contentstack has a hosted endpoint at https://api.contentstack.io and Storyblok at https://mapi.storyblok.com/v1.


## For agents

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

## Other comparisons with Contentstack or Storyblok

- [Contentstack vs Ghost](https://www.anchorterminal.com/compare/contentstack-vs-ghost.md)
- [Contentstack vs Sanity](https://www.anchorterminal.com/compare/contentstack-vs-sanity.md)
- [Contentstack vs Strapi](https://www.anchorterminal.com/compare/contentstack-vs-strapi.md)
- [Contentstack vs Webflow](https://www.anchorterminal.com/compare/contentstack-vs-webflow.md)
- [Contentstack vs WordPress](https://www.anchorterminal.com/compare/contentstack-vs-wordpress.md)
- [Ghost vs Storyblok](https://www.anchorterminal.com/compare/ghost-vs-storyblok.md)
- [Sanity vs Storyblok](https://www.anchorterminal.com/compare/sanity-vs-storyblok.md)
- [Storyblok vs Strapi](https://www.anchorterminal.com/compare/storyblok-vs-strapi.md)
- [Storyblok vs Webflow](https://www.anchorterminal.com/compare/storyblok-vs-webflow.md)
- [Storyblok vs WordPress](https://www.anchorterminal.com/compare/storyblok-vs-wordpress.md)