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KDP Niche Research

by io.github.simul813
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Server Details

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

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A4.6/5.0

Scored across 2 tools

Disambiguation5/5

The two tools are completely distinct: list_niches provides an overview of available keywords, while research_niche dives into detailed metrics for a specific keyword. There is no overlap in purpose or output, making selection unambiguous.

Naming Consistency5/5

Both tools follow a consistent verb_noun convention with lowercase and underscores: list_niches and research_niche. The pattern is predictable and matches the server's research-focused domain.

Tool Count3/5

With only two tools, the server feels thin for a complete research workflow, though it covers the essential 'discover then investigate' flow. The count is borderline but not entirely inadequate given the focused purpose.

Completeness4/5

The core workflow of listing niches and researching a specific niche is covered with no dead ends. Minor gaps include lack of bulk research or filtering options, but agents can manually iterate over list results to achieve similar outcomes.

Available Tools

2 tools
list_nichesAInspect

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)

Inputs: limit, offset. Returns: object

research_nicheAInspect

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.

Inputs: keyword (required), x_payment. Returns: object

Tool Schema Changelog

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