# Free Small Biz Tools — Stack Report

> Free Small Biz Tools — Stack Report is a paid API for AI agents from api.freesmallbiztools.com, paid per call via x402, $1/call, status unknown (last checked 2026-10-16).

Returns a curated list of free and freemium software tools recommended for a given small business type, with optional filters for team size, cost, and specific need categories.

## Facts

- Endpoint: GET https://api.freesmallbiztools.com/v1/stack-report?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/free-small-biz-tools-stack-report-aab03f3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AcUW-NGd45-fKqPvSrjoG

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 free-small-biz-tools-stack-report-aab03f3e
```

Example prompt: Pull me a free tool stack report for my consulting business — show only completely free tools, no freemium, for a team of 3.

## When to prefer this

Choose this endpoint when an agent needs a curated, up-to-date list of free or freemium tools tailored to a specific small business type. It is ideal for onboarding workflows, business setup assistants, or cost-reduction audits where the user wants vendor-vetted recommendations rather than generic web search results. Prefer this over general web search when structured, categorized tool data is needed with known freshness timestamps.

## Known failure modes

- Missing required 'business_type' parameter returns a validation error
- Invalid 'business_type' value not in the allowed enum returns a 400-level error
- Payment failure (x402) if USDC is not sent or insufficient — endpoint returns 402 Payment Required
- Empty stack array returned if no tools match the combined filters (e.g., very restrictive needs + free_only)
- Stale tool data if vendor pages have changed since the last recorded check date

## How this service works

A directory of free and freemium tools for small businesses. Each listing quotes the vendor's own page and records the date we checked it.

## Output

A JSON object containing a list of recommended tools ('stack' array) for the specified business type, along with the report identifier and business type echo. Each tool entry is sourced from vendor pages with a recorded check date, covering categories relevant to the business type requested.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "business_type"
     ],
     "properties": {
      "needs": {
       "type": "string",
       "description": "Extra category slugs, comma separated"
      },
      "free_only": {
       "enum": [
        "true",
        "false"
       ],
       "type": "string"
      },
      "team_size": {
       "type": "string"
      },
      "business_type": {
       "enum": [
        "service",
        "trades",
        "retail",
        "online_store",
        "creator",
        "consultant",
        "agency",
        "nonprofit"
       ],
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "stack": [],
  "report": "small_business_tool_stack",
  "business_type": "consultant"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/free-small-biz-tools-stack-report-aab03f3e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.freesmallbiztools.com](https://www.zero.xyz/host/api.freesmallbiztools.com/llms.txt)