Create write

Writes bytes to one path in the caller's sandbox, creating parents, and answers the resolved path.

POST /v1/sandbox/write

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Address	`https://api.hanzo.ai/v1/sandbox/write`
Method	`POST`
Operation	`write_sandbox_file`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Writes bytes to one path in the caller's sandbox, creating parents, and answers the resolved path.

Request

3 fields, body application/json (required).

Field	In	Type	Required	Description
`data`	body	string	—	Data is the file's bytes, and replaces whatever was there.
`id`	body	string	—	ID is the sandbox to write into, from an earlier lease.
`path`	body	string	—	Path is confined the same way PathIn.Path is.

Response

Status	Body	Meaning
`200`	sandbox.Wrote	ok
`default`	problem-details	refused

200 body — 2 fields.

Field	In	Type	Always	Description
`bytes`	body	integer (int64)	—	Bytes is how many bytes the file now holds.
`path`	body	string	—	Path is where the bytes actually landed: the caller's path resolved against the sandbox's working directory (Leased.Workdir), which is what a later read or a shell line inside the sandbox has to name.

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo sandbox write

.ts

.py

.go

.rs

.java

import { Configuration, SandboxApi } from 'hanzoai';

const api = new SandboxApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.writeSandboxFile({ data: "<data>", id: "<id>" });

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import SandboxApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = SandboxApi(client).write_sandbox_file(data="<data>", id="<id>")

cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.SandboxAPI.WriteSandboxFile(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, sandbox_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = sandbox_api::write_sandbox_file(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.SandboxApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new SandboxApi(client).writeSandboxFile();

curl -X POST https://api.hanzo.ai/v1/sandbox/write \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "data": "<data>",
       "id": "<id>"
     }'

Tool sandbox, op write_sandbox_file — POST the JSON-RPC envelope to https://api.hanzo.ai/v1/mcp.

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "sandbox",
         "arguments": {
           "op": "write_sandbox_file",
           "input": {
             "data": "<data>",
             "id": "<id>"
           }
         }
       }
     }'

Sandbox API · All Hanzo APIs · Interactive reference

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