# FetchSandbox

> Use this tool when you need to create a stateful sandbox environment from an OpenAPI specification, solving the problem of AI agents making incorrect assumptions about field names and IDs. FetchSandbox ingests OpenAPI specs and exposes tools to list and run workflows with realistic, schema-validated responses. It is ideal for use cases where AI agents require a reliable and validated testing environment to interact with APIs.

Canonical page: https://skillsregistry.net/skills/fetchsandbox  
JSON: https://api.skillsregistry.net/v1/skills/fetchsandbox

## Description

FetchSandbox turns any OpenAPI specification into a stateful, AJV-validated sandbox that AI agents can actually call, solving the problem of agents hallucinating field names and IDs from raw specs. It exposes tools to ingest OpenAPI specs, list workflows, and run them with realistic schema-validated responses.

## Trust

- **Trust score (0–1):** 0.65
- **Verification tier:** scanned
- **Last scanned:** 2026-09-01

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-09-01

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/fetchsandbox)
- **Repository:** <https://github.com/fetchsandbox/mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "fetchsandbox"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/fetchsandbox` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/fetchsandbox/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt