# Sanity vs Storyblok

> Sanity scores 73.7 (BB) on agent readiness against Storyblok's 67.7 (B), and leads in 4 of 7 scored categories. Storyblok leads on security & auth. Both do cms content. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/sanity-vs-storyblok
- Markdown: https://www.anchorterminal.com/compare/sanity-vs-storyblok.md (~2,150 tokens)
- Slim: https://www.anchorterminal.com/compare/sanity-vs-storyblok.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/sanity-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

Sanity scores 73.7 (BB) on agent readiness against Storyblok's 67.7 (B), and leads in 4 of 7 scored categories. Storyblok leads on security & auth. Both do cms content.

- Sanity: grade BB, 73.7/100, rank #69 of 629. Markdown https://www.anchorterminal.com/tools/sanity.md · JSON https://www.anchorterminal.com/api/v1/tools/sanity.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

### Sanity (BB)

Good for: Teams that model content as structured documents and want an agent to draft, patch and stage changes in releases for a person to publish.

Ahead on:
- Schema & documentation, 87 against 68
- Payments & pricing, 40 against 35
- Maintenance & community, 89 against 80
- Transparency & trust, 87 against 80

Also in its favour:
- Agent-ready, a grade of BB or better
- No incidents deducted, where Storyblok loses 3 points for them

Watch for: Schema validation rules run only in Sanity Studio. The HTTP mutation API accepts a document without checking them

### 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:
- Security & auth, 73 against 67

Also in its favour:
- Free to start without a card

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 | Sanity | Storyblok | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 77 | 79 | Storyblok +2 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 68 | Sanity +19 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 78 | Storyblok +4 |
| Security & auth | 14% (17.5 this run) | 67 | 73 | Storyblok +6 |
| Payments & pricing | 10% (12.5 this run) | 40 | 35 | Sanity +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 89 | 80 | Sanity +9 |
| Transparency & trust | 7% (8.8 this run) | 87 | 80 | Sanity +7 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **73.7 · BB** | **67.7 · B** | |

## Facts side by side

| Fact | Sanity | Storyblok |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Sanity US Inc. and Sanity AS | Storyblok GmbH |
| Hosted endpoint | `https://api.sanity.io` | `https://mapi.storyblok.com/v1` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | Proprietary hosted service under Sanity's terms of service. Sanity Studio, the CLI, `@sanity/client` and the agent toolkit on GitHub are MIT | Proprietary service under Storyblok's terms. The SDKs, API clients and CLI in storyblok/monoblok are MIT |
| Tools exposed | 53 | 7 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `io.sanity.www/mcp` | not listed |
| Last release | 2026-10-02 | 2026-10-02 |
| Terms last updated | no date given | couldn't be read |
| Privacy policy last updated | no date given | 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 | not found in the text | couldn't be read |
| Popularity | 6.4k stars, 4.1M npm/wk | 68 stars, 433k npm/wk |

## Verdicts

**Sanity.** Sanity publishes 26 OpenAPI specs covering 225 operations, and its hosted MCP server saves edits to drafts or release versions, with publishing as a separate call. The Content Lake does not run schema validation on API writes, and custom roles that limit a token to one dataset or document type are sold only on Enterprise plans.

**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

### Sanity

1. Pin a static dated version in every URL, such as `v2025-02-19`. Omitting `apiVersion` in `@sanity/client` falls back to `v1`.
2. Validate documents against the schema yourself before an HTTP write, or run `sanity documents validate` afterwards. The Content Lake does not enforce schema rules.
3. Back off on 429 for mutations yourself. `@sanity/client` retries queries five times but never retries mutations. The limit is 25 mutations a second per IP.
4. Over MCP, call `create_version` before `patch_documents` when editing inside a release, then patch the returned version ID with the same `releaseId`.
5. Use GROQ projections and slices to size results. MCP query responses are limited to 64 KiB, and a blocked Free project answers 402 with `plan_limit_reached`.

### 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, Sanity or Storyblok?

Sanity scores 73.7 (BB) on agent readiness against Storyblok's 67.7 (B), and leads in 4 of 7 scored categories. Storyblok leads on security & auth.

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

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

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

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


## For agents

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

## Other comparisons with Sanity or Storyblok

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