# Velven

> Publish browser games, worlds, tools and wonders built with AI to Velven's hosting, and manage them.

- name: io.github.velvenai/velven
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 83/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.velvenai%2Fvelven
- tools: https://api.protogrid.dev/v1/servers/io.github.velvenai%2Fvelven/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "velven": {
      "type": "http",
      "url": "https://mcp.velven.ai/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 100
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-100% +updated-22d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 83/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 93 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 5 of 5 tools declare readOnlyHint or destructiveHint
- warn `tools.directory_hints`: 2 of 5 tools declare all four hints; missing: my_spaces (destructiveHint, idempotentHint); versions (destructiveHint, idempotentHint); search_docs (destructiveHint, idempotentHint)
- pass `tools.token_cost`: about 1,390 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 75 (weight 15)

- warn `stability.changes`: 9 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 1,390 tokens to load them all
- tool set hash: cad7227915b10b9284eea0afcb2afee6
- tools last changed: 2026-10-09T17:29:06.125Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.velvenai/velven.svg)](https://protogrid.dev/servers/io.github.velvenai/velven)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-09 `publish` changed (description, inputSchema)
  - before: Publish a browser game, world, tool or wonder on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version, live on its Velven page within seconds. Not signed in: an unlisted page, live the same way, returned with a claim token that keeps it. A new space needs title, type and devices from the person. To update a space pass space (signed in) or claim (not signed in).
  - after: Publish a browser game or any other page made to play or use on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version, live on its Velven page within seconds. Not signed in: an unlisted page, live the same way, returned with a claim token that keeps it. A new space needs title and devices from the person. To update a space pass space (signed in) or claim (not signed in).
- 2026-09-29 `rollback` changed (description)
  - before: Make an earlier version of a hosted space live again. Only a version that was live before (rollback: true in versions) can be picked; it goes live at once without a new check. Needs sign-in.
  - after: Make an earlier version of a hosted space live again. Only a version that was live before (rollback: true in versions) can be picked; it goes live at once. Needs sign-in.
- 2026-09-29 `versions` changed (description, outputSchema)
  - before: List a hosted space's versions, newest first: number, status (uploading, preview, checking, live, refused, unjudged, replaced), size, and whether rollback can pick it. Refused versions carry the reason. Needs sign-in.
  - after: List a hosted space's versions, newest first: number, status (uploading, preview, publishing, live, refused, unjudged, replaced), size, and whether rollback can pick it. Refused versions carry the reason. Needs sign-in.
- 2026-09-29 `publish` changed (description, inputSchema, outputSchema)
  - before: Publish a browser game, world, tool or wonder on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version after Velven's safety check. Not signed in: an unlisted page, live after the check, returned with a claim token that keeps it. A new space needs title, type and devices from the person. To update a space pass space (signed in) or claim (not signed in).
  - after: Publish a browser game, world, tool or wonder on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version, live on its Velven page within seconds. Not signed in: an unlisted page, live the same way, returned with a claim token that keeps it. A new space needs title, type and devices from the person. To update a space pass space (signed in) or claim (not signed in).
- 2026-09-28 `search_docs` changed (outputSchema)
- 2026-09-28 `rollback` changed (outputSchema)
- 2026-09-28 `versions` changed (outputSchema)
- 2026-09-28 `my_spaces` changed (outputSchema)
- 2026-09-28 `publish` changed (description, outputSchema)
  - before: Publish a browser game, world, tool or toy on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version after Velven's safety check. Not signed in: an unlisted page, live after the check, returned with a claim token that keeps it. A new space needs title, type and devices from the person. To update a space pass space (signed in) or claim (not signed in).
  - after: Publish a browser game, world, tool or wonder on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version after Velven's safety check. Not signed in: an unlisted page, live after the check, returned with a claim token that keeps it. A new space needs title, type and devices from the person. To update a space pass space (signed in) or claim (not signed in).

Full history: https://api.protogrid.dev/v1/servers/io.github.velvenai%2Fvelven/changes

## Remotes

- https://mcp.velven.ai/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (5)

- `my_spaces`: List the spaces of the signed-in Velven account: slug, title, status, whether Velven hosts it, and its page. Needs sign-in; called without it, the app asks the person to sign in to Velven.
- `publish`: Publish a browser game or any other page made to play or use on Velven's hosting, from one HTML page or a small set of files (3 MB in all). Signed in: a private preview by default, or with prod: true the next live version, live on its Velven page within seconds. Not signed in: an unlisted page, live the same way, returned with a claim token that keeps it. A new space needs title and devices from the person. To update a space pass space (signed in) or claim (not signed in).
- `rollback`: Make an earlier version of a hosted space live again. Only a version that was live before (rollback: true in versions) can be picked; it goes live at once. Needs sign-in.
- `search_docs`: Search Velven's documentation: publishing and hosting, velven.json, the CLI, the SDK (sign-in, leaderboards, saves, achievements, rooms), claiming a page, the agent API and limits. Returns the best matching sections with links.
- `versions`: List a hosted space's versions, newest first: number, status (uploading, preview, publishing, live, refused, unjudged, replaced), size, and whether rollback can pick it. Refused versions carry the reason. Needs sign-in.