# objekt.sh File Upload — ENS-Keyed Blob Storage

> objekt.sh File Upload — ENS-Keyed Blob Storage is a paid API for AI agents from api.objekt.sh, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-10).

Upload a file blob to ENS-namespaced storage with optional permanent IPFS/Arweave pinning and CDN delivery

## Facts

- Endpoint: PUT https://api.objekt.sh/%7Bname%7D/blob/%7Bkey%7D?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/objekt-sh-file-upload-ens-keyed-blob-storage-203e06d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xdyUL7teqbvYuAG7wt1CR

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability objekt-sh-file-upload-ens-keyed-blob-storage-203e06d1 -d '<json body>'
```

Example prompt: Store this proof-of-ownership JSON file under my ENS name alice.eth with the key proof.twitter on objekt.sh — I want a permanent IPFS link back.

## When to prefer this

Choose this endpoint when you need to store a file under a specific ENS identity namespace with a stable, human-readable permalink, especially when permanent decentralized storage on IPFS or Arweave is required. Prefer it over generic S3-style storage when ENS-linked identity, censorship resistance, or IPFS compatibility matters. It is particularly suited to AI agents that need to publish outputs, proofs, or credentials tied to a Web3 identity.

## Known failure modes

- Invalid or unresolvable ENS name returns a 4xx error
- Blob key contains illegal characters causing a routing failure
- Payment of 0.25 USDC not attached results in 402 Payment Required
- File too large for the tier causes a 413 or quota error
- Network timeout during upload leaves the blob in an inconsistent state
- Arweave/IPFS pinning backend unavailable returns a partial or degraded response

## How this service works

File storage for AI agents and ENS names. Upload via MCP, REST, or CLI. Free CDN tier. Permanent Arweave and IPFS options.

## Output

Returns a JSON object containing the IPFS URI (e.g. ipfs://bafybei…), the number of bytes stored, and a human-readable permalink URL formed as https://ens.objekt.sh/{name}/blob/{key} for public CDN access.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {},
     "description": "Raw bytes body. Signing via X-Upload-Sig / X-Upload-Expiry / X-Upload-Address headers over EIP-712 Upload{upload:'blob/<key>',expiry,name,hash:sha256(body)}"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "name",
      "key"
     ],
     "properties": {
      "key": {
       "type": "string",
       "pattern": "^[a-z0-9]+(\\.[a-z0-9]+)*$",
       "description": "Dotted namespace key (e.g. proof.twitter)"
      },
      "name": {
       "type": "string",
       "description": "ENS name"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "uri": "ipfs://bafybeib…",
  "bytes": 234,
  "permalink": "https://ens.objekt.sh/alice.eth/blob/proof.twitter"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/objekt-sh-file-upload-ens-keyed-blob-storage-203e06d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.objekt.sh](https://www.zero.xyz/host/api.objekt.sh/llms.txt)