_ registry / mcp streamable-http · checked 2h ago

velven

https://velven.ai

Registry code: 4037f0fed6001325

api record

Velven (velven.ai) is where people make games and other things to play in a browser, publish them, and play what others made. This server publishes a space (a project published on Velven) to Velven's hosting and manages it.

- To put something online, call publish with the page (html) or its files. For a new space ask the person for its title and devices; never guess them. Without prod it makes a private preview (signed in) or an unlisted page (not signed in). Publish with prod: true only when the person asks to go live; it is live on its Velven page within seconds, or waits on Velven to…

endpoint
https://velven.ai/api/mcp
protocol
streamable-http ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is velven live?
Partly — its last checks failed now and then (checked 2h ago). It answered 0% of checks over the last 30 days.
Is velven free to use?
Not measured yet.
What tools does velven have?
5 tools: rollback, my_spaces, search_docs, publish, versions.
Is velven safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
degraded
uptime, 30 days
0%

90 days 0%· all time 0%

latency
—

last good check

priced tools
0

of 5 tools

_ answered our checks, 90 days 1 checks · signed record
  • unknown → degraded· HTTP 503: vercel DEPLOYMENT_PAUSED
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 5 tools
5 never probed 0 of 5 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • rollback unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "space",
    "version"
  ],
  "properties": {
    "space": {
      "type": "string",
      "pattern": "^[a-z0-9-]{1,100}$",
      "description": "The space's slug, as my_spaces or publish named it, e.g. pixel-racer."
    },
    "version": {
      "type": "integer",
      "maximum": 9007199254740991,
      "minimum": 1,
      "description": "The version number to make live again."
    }
  }
}
    arguments 21 lines
  • my_spaces unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • search_docs unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 10,
      "minimum": 1,
      "description": "How many sections to return. Default 5."
    },
    "query": {
      "type": "string",
      "maxLength": 200,
      "minLength": 2,
      "description": "What to look up, in a few words."
    }
  }
}
    arguments 21 lines
  • publish unknown never probed

    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).

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "sdk": {
      "type": "boolean",
      "description": "Add Velven's SDK script to the entry page. Default true."
    },
    "spa": {
      "type": "boolean",
      "description": "Serve the entry page for any unknown path (a single-page app)."
    },
    "clip": {
      "type": "string",
      "description": "The video the tile plays on hover, without sound. Give the path of one of the files sent: an MP4 or WebM, up to 3 MB and 5 to 10 seconds long. Velven then records no clip of its own. Without a thumbnail, the clip's first frame is the picture. It must show the space itself. A clip outside that length is refused. If the file doesn't say its length, Velven measures it once live. It keeps the first 10 seconds of a longer clip, and drops a shorter one. A later version that names neither keeps the space's."
    },
    "html": {
      "type": "string",
      "description": "A whole page as one HTML string, published as index.html."
    },
    "prod": {
      "type": "boolean",
      "description": "Go live on the space's Velven page instead of making a preview. Signed in only. Default false."
    },
    "claim": {
      "type": "string",
      "pattern": "^vlc_[A-Za-z0-9_-]{43}$",
      "description": "The claim token of an unlisted page: publishes its next version, or claims it when signed in."
    },
    "entry": {
      "type": "string",
      "description": "The page that opens first, if not index.html."
    },
    "files": {
      "type": "object",
      "description": "Files by relative path: text as a string, binary as { \"base64\": \"...\" }. Must include the entry page (index.html unless entry says otherwise). A velven.json, a dotfile, a dot-folder or node_modules, in any folder, is left out (never published; the result names the first 10 and counts the rest): send velven.json's settings as this tool's fields.",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "object",
            "required": [
              "base64"
            ],
            "properties": {
              "base64": {
                "type": "string"
              }
            }
          }
        ]
      }
    },
    "space": {
      "type": "string",
      "pattern": "^[a-z0-9-]{1,100}$",
      "description": "Publish a new version of this space (yours, signed in)."
    },
    "title": {
      "type": "string",
      "maxLength": 80,
      "description": "The space's name. Required for a new space."
    },
    "engine": {
      "enum": [
        "three.js",
        "r3f",
        "babylon.js",
        "playcanvas",
        "a-frame",
        "godot",
        "unity",
        "phaser",
        "p5.js",
        "canvas",
        "webgl",
        "webgpu",
        "wasm",
        "dom",
        "marble",
        "spline",
        "other"
      ],
      "type": "string",
      "description": "What it draws with, if one of these."
    },
    "devices": {
      "type": "array",
      "items": {
        "enum": [
          "desktop",
          "mobile",
          "vr"
        ],
        "type": "string"
      },
      "description": "Where it can be played. Required for a new space."
    },
    "thumbnail": {
      "type": "string",
      "description": "The picture on the space's tile. Give the path of one of the files sent: a JPEG, PNG or WebP, up to 2 MB and 4096 pixels on each side. It's used as soon as the version is live, and Velven takes no picture of its own. It must show the space itself."
    },
    "description": {
      "type": "string",
      "maxLength": 160,
      "description": "One line under the name."
    }
  }
}
    arguments 114 lines
  • versions unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "space"
  ],
  "properties": {
    "space": {
      "type": "string",
      "pattern": "^[a-z0-9-]{1,100}$",
      "description": "The space's slug, as my_spaces or publish named it, e.g. pixel-racer."
    }
  }
}
    arguments 14 lines
_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 4037f0fed6001325.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/4037f0fed6001325/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/4037f0fed6001325/badge.svg)](https://brick.blue/agent/4037f0fed6001325?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we know
card completeness
90%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.