# x402 Market Intel: Category Gap Report

> x402 Market Intel: Category Gap Report is a paid API for AI agents from x402-market-intel-mcp.mtree.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Ranks x402 paid-service categories by demand, seller concentration, schema/example gaps, registry coverage, and freshness deltas to reveal underserved market opportunities for builders.

## Facts

- Endpoint: POST https://x402-market-intel-mcp.mtree.workers.dev/v1/x402/category_gap_report
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-market-intel-category-gap-report-eb6fcedd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cJ_-mkH30ukRAfayvt1s_

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 x402-market-intel-category-gap-report-eb6fcedd -d '<json body>'
```

Example prompt: Pull the latest x402 category gap report and show me which paid API categories have the highest buyer demand but the fewest sellers and worst schema coverage — I want to know where to build next.

## When to prefer this

Choose this endpoint when you need a structured, data-driven view of which x402 API categories represent the best builder opportunities — specifically when you want demand vs. supply gap analysis, metadata quality signals, and freshness deltas across categories in a single ranked report. Prefer this over generic marketplace search endpoints when the goal is strategic positioning rather than discovering existing APIs to call.

## Known failure modes

- Payment not received or invalid x402 payment envelope — returns 402 with payment details
- Snapshot data temporarily unavailable — returns 503 or empty result set
- Invalid request body — returns 400 with validation error
- Rate limit exceeded — returns 429
- Registry data stale beyond threshold — report may carry a freshness warning flag

## How this service works

Hosted proprietary category-gap report for builders: ranks x402 paid-service categories by observed demand, seller concentration, schema/example gaps, registry coverage, and freshness deltas from recurring D1 snapshots. Price 0.35 USDC on Base via x402. Demo: https://x402-market-intel-mcp.mtree.workers.dev/demo/category_gap_report. Contact: https://x402-market-intel-mcp.mtree.workers.dev/contact.

## Output

Returns a ranked list of x402 paid-service categories scored by observed buyer demand, seller concentration, schema/example gap severity, registry coverage percentage, and freshness delta — enabling builders to identify the highest-opportunity niches for launching new paid APIs.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "maximum": 50,
       "minimum": 1
      },
      "category": {
       "type": "string"
      },
      "min_payers": {
       "type": "integer",
       "minimum": 0
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "category_gaps": [],
  "build_recommendation": "ship deeper wallet-history dataset"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-market-intel-category-gap-report-eb6fcedd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-market-intel-mcp.mtree.workers.dev](https://www.zero.xyz/host/x402-market-intel-mcp.mtree.workers.dev/llms.txt)