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Mart402 MCP server

Which MCP servers are Mart402's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-24

← Back to Mart402

Whose server it is
  • Registry namecom.mart402/docsverified in the MCP registry

The registry name sits under mart402.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-24
  • Stateanswerschecked 2026-10-24
  • Tools14
  • Server calls itselfmart402
  • Server version0.3.0
  • Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 110 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: convert web pages and PDFs into markdown for agents; verify invoice totals and Japanese corporate registration numbers.
  • Checked on 3 of the 7 days it takes to judge reliability.

Once connected

  • For "convert web pages and PDFs into markdown for agents", the likely first call is extract_url.
  • For "verify invoice totals and Japanese corporate registration numbers", the likely first call is verify_invoice.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 3, the first on 2026-10-24
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
  • What an agent can do with it2 of 2 use cases
  • Answeredmeasuring3 of the 7 daily checks it takes to print a share
  • Median first answer314 ms
  • Space in an agent's context≈ 2,699 tokensthe definitions of all its tools (14), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Typed results14 of 14 toolsdeclared outputSchema: results come typed, read once
  • Every tool passes all six checks.

What an agent can do with it

  • can do · convert web pages and PDFs into markdown for agents
  • not sure · calculate Japanese payroll, social insurance, and withholding tax
  • can do · verify invoice totals and Japanese corporate registration numbers

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers14 tools · read 2026-10-24
  • get_catalog

    Mart402 product catalog: all products, prices, payment config, error codes, rate limits. Free.

  • quote_parse

    Free quote for PDF parsing: page count, route (text/scan-OCR) and the exact final price, before any payment. Use the returned quote_id with parse_document (on /mcp or /mcp/docs).

  • get_receipt

    Re-fetch a previously paid result for free by receipt id (every paid response carries receipt_id).

  • get_sample

    Free recorded sample response for a paid product (from real production runs, marked sample:true) - see the exact response shape before paying anything. Available: document-pipeline, enrich, extract, jp-bonus-net, jp-business-days…

  • extract_url

    Extract a web page to clean Markdown + metadata (auto JS rendering, robots.txt respected). $0.005 fast / $0.01 rendered; cached results half price. Choose this when you need a web PAGE as clean Markdown to read yourself; to fill a schema…

  • parse_document

    Parse a PDF to structured Markdown (hallucination-guarded OCR for scanned pages, Japanese-strong). Pass url (one step: the 402 quotes the exact price for that PDF) or quote_id from quote_parse (price fixed by the quote). One of the two is…

  • ocr_image

    OCR one image to text with dual-engine consensus, calibrated confidence and per-segment corroboration. Japanese-strong. Flat $0.05/image. Choose this when the input is an IMAGE (photo, screenshot, receipt); for PDFs use parse_document.

  • verify_invoice

    Verify extracted invoice fields: arithmetic consistency, line-item totals, JP registration number check-digit + corporate-number existence observation (official Japan NTA registry), accounting-ready JSON. $0.015/call. Choose this when you…

  • enrich_company

    Company name/domain/URL to a verified profile from primary sources + GLEIF LEI and Japan NTA corporate-number registries. Per-field evidence + confidence, honest nulls; unresolved lookups never charged. $0.03/company. Choose this when you…

  • structured_extract

    Fill YOUR JSON schema from any URL (hybrid LLM + deterministic canonicalization). $0.03/call. Choose this when you have your OWN JSON schema to fill from any page; for company profiles use enrich_company or jp_company_profile.

  • document_pipeline

    One call: PDF invoice to parse (hallucination-guarded OCR) + field extraction + arithmetic verification (+optional issuer enrich). Flat $0.05/document; inputs validated before payment. Choose this when a PDF is an invoice/receipt and you…

  • pdf_merge

    Merge 2-10 PDFs into one, in order. Deterministic, $0.003.

  • pdf_pages

    Extract pages from a PDF by 1-based ranges (e.g. 1-3,7) into a new PDF. Deterministic, $0.002.

  • pdf_info

    PDF facts before you pay for parsing: pages, metadata, per-page text volume, scanned-or-not estimate. $0.001. Choose this first for any unknown PDF (cheapest real call); then parse_document, pdf_pages or document_pipeline.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "docs": {
      "type": "http",
      "url": "https://mart402.com/mcp/docs"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http mart402 https://mart402.com/mcp/docs

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://mart402.com/mcp/docs as a custom connector in the settings.

Other servers listed as Mart402's
  • com.mart402/extractanswers, 35 toolsverified in the MCP registry
  • com.mart402/freeanswers, 6 toolsverified in the MCP registry
  • com.mart402/jp-statutorynot asked yetverified in the MCP registry
  • com.mart402/visionnot asked yetverified in the MCP registry

OpenAPI spec

65 paths, read 2026-10-24. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.