# KDP Niche Research (remote · nichedata.dev)

Kindle niche intelligence (demand/competition/BSR/revenue) gated by x402 USDC on Base.

- Trust score: 65/100 (medium)
- Change this week: +6
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `nichedata.dev`: 65/100 (this document), [markdown](https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata.md), [page](https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata)

## Channel facts

- Endpoint: `https://nichedata.dev/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to call this server, and 2 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 68/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 439 tokens (~219/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http simul813-kdp-niche-research https://nichedata.dev/mcp
```

### Codex

```toml
[mcp_servers.simul813-kdp-niche-research]
url = "https://nichedata.dev/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "simul813-kdp-niche-research": {
      "type": "remote",
      "url": "https://nichedata.dev/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add simul813-kdp-niche-research --url https://nichedata.dev/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  simul813-kdp-niche-research:
    url: "https://nichedata.dev/mcp"
```

### Other

```json
{
  "mcpServers": {
    "simul813-kdp-niche-research": {
      "type": "http",
      "url": "https://nichedata.dev/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-01 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-31 (score 63, +2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 61, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-28 (score 60, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-27 (score 59, +1)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-26 (score 58)

First indexed and scored.

## MCP tools (2)

### `list_niches` (~102 tokens)

List available KDP niche keywords ordered by demand score.

    Use this to discover what Kindle publishing niches are available for
    detailed research. Returns keywords ordered by demand score (highest first).

    This endpoint is free — no payment required.

    Args:
        limit: Number of results to return (1-100, default 20)
        offset: Pagination offset (default 0)

Input parameters:

- `limit` (integer)
- `offset` (integer)

### `research_niche` (~262 tokens)

Get detailed KDP niche intelligence for a specific keyword.

    Returns demand score, competition score, Amazon BSR range, estimated
    monthly revenue, review threshold, average book pricing, and data
    freshness for the given Kindle publishing niche.

    Pricing tiers (x402 USDC on Base network):
      - $0.03 per query for cached/pre-seeded keywords
      - $0.10 per query for live on-demand research (new keywords)

    Use the free `list_niches` tool first to see available keywords.

    Payment options:
      1. Set the KDP_X_PAYMENT environment variable on the server for auto-pay.
      2. Pass a valid x402 payment header via the x_payment argument.
      3. If neither is set, the tool returns structured 402 payment instructions
         that an x402-capable agent can use to construct and retry payment.

    Args:
        keyword: The KDP niche keyword to research (e.g. "romance novels", "keto cookbook")
        x_payment: Optional base64-encoded x402 payment header. Takes precedence
                   over the KDP_X_PAYMENT environment variable.

Input parameters:

- `keyword` (string, required)
- `x_payment` (string)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata#diagnostics

## Score history

- 2026-08-03: 65
- 2026-08-02: 64
- 2026-08-01: 64
- 2026-07-31: 63
- 2026-07-30: 61
- 2026-07-29: 60
- 2026-07-28: 60
- 2026-07-27: 59
- 2026-07-26: 58

## Links

- Remote endpoint: https://nichedata.dev/mcp
- Repository: https://github.com/simul813/kdp-intelligence-api
- Website: https://nichedata.dev/
- Changelog RSS feed: https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata/changelog.json
- HTML version of this page: https://verifymcp.io/servers/simul813-kdp-niche-research/nichedata