India Company Diligence

india-company-diligence

An open-source MCP server that makes India's public company data agent-legible: a full local mirror of the MCA company master data (~3.74M companies), offline CIN decoding and GSTIN validation, and provenance on every field.

v0.1.0 · mirror as_of 2026-10-25 · upstream dataset updated 2026-10-13 · MIT license · github.com/amit043/india-company-diligence

60-second demo

You: A vendor called "Hella Infra Market" wants a ₹2 crore credit line. Check them out.

Claude (calls company_search, then company_lookup): HELLA INFRA MARKET LIMITED (CIN U46632MH2016PLC283737) is Active, a public unlisted company registered with ROC Mumbai, incorporated 2016-07-15, paid-up capital ₹285.8 crore. Note: HELLA INFRACON PRIVATE LIMITED — a similarly named entity — is Strike Off, so confirm the exact CIN on the invoice. Missing: directors, charges, and financials require the live MCA layer (roadmap). Source: mca-master-data, as_of 2026-10-25.

Every answer carries where each field came from, what is missing, and what is stale. Missing is stated, never fabricated.

Install & run (Claude Desktop)

Requires uv.

# 1. one-time: download the prebuilt mirror (~530 MB download, ~1.4 GB on disk)
uvx --from india-company-diligence icd-fetch

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "india-company-diligence": {
      "command": "uvx",
      "args": ["india-company-diligence"],
      "env": { "ICD_MIRROR_DB": "C:\\full\\path\\to\\mca_mirror.duckdb" }
    }
  }
}

Restart Claude Desktop. Ask: "Look up CIN L17110MH1973PLC019786".

Tools

Tool	What it does	Network
company_lookup(cin)	Full registry row for one CIN, per-field provenance	mirror only
company_search(name, limit)	Case-insensitive name search, ≤50 rows, ranked	mirror only
cin_decode(cin)	Offline structural decode: listing status, state, year, company type	none
gstin_validate(gstin)	Offline GSTIN structure + mod-36 checksum validation	none

The provenance contract

Every tool returns data plus provenance, and states what is missing or stale — never fabricated, never an error page:

{
  "data": { "...": "..." },
  "provenance": [{"field": "CompanyStatus", "source": "mca-master-data", "as_of": "2026-10-25"}],
  "missing": ["director_network (live layer unavailable)"],
  "stale": []
}

Data & attribution

Company Master Data (RoC-wise), published by the Ministry of Corporate Affairs via data.gov.in, licensed under the Government Open Data License – India (GODL). 3,738,721 companies; upstream dataset updated 2026-10-13; this mirror built 2026-10-25.

gstin_validate is offline-only by design: no keyless public GST API exists, so legal name / registration status are stated as missing rather than guessed.

Roadmap

• L1 live layer — MCA directors & charges via browser automation (week 2)
• LLP decode — cin_decode currently handles company CINs; LLP IDs (e.g. ABA-1729) next
• Refresh cadence: monthly mirror rebuilds as upstream updates

Bugs and data gaps: open an issue.

Sync the mirror yourself (alternative to icd-fetch)

Get a free API key on data.gov.in, then:

export OGD_API_KEY=your-key        # or put it in a .env file at the repo root
uv run icd-sync                    # paginated pull, checkpointed, safe to interrupt
uv run icd-import                  # CSV -> data/mca_mirror.duckdb, source/as_of baked in

The pull is paced (5s between pages by default; override with OGD_DELAY_SECONDS or uv run icd-sync --delay 3). Completion matters, not speed.

Pausing & resuming

• stop: uv run icd-watch stop (or just close the terminal)
• status: uv run icd-watch status
• resume: uv run icd-watch start — continues from data/mca_master.checkpoint
• when the checkpoint reaches the dataset total, run uv run icd-import

Development

uv sync
uv run pytest
uv run ruff check .

Prefer plain pip? requirements.txt / requirements-dev.txt mirror the deps.

License

MIT. Data under GODL-India; attribution as above.