# NACEBridge — Full AI Index

> Cross-border European activity classification. Maps EU NACE Rev 2.1 down to the 5th-digit national subclasses used by 27+ countries.

Service operated by TΣKSOMΛ Holding, Lda. Built by TΣKSOMΛ Technologies (https://tech.teksoma.com). Powered by TΣKSOMΛ | MΛRKET INTΣLLIGENCE (https://mi.teksoma.com). Data © European Union (NACE Rev 2.1, reused under the Commission's reuse policy) and national statistical institutes.

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## What NACEBridge is

NACEBridge is the cross-border bridge between the EU's NACE Rev 2.1 taxonomy and the national 5th-digit subclass systems each EU member state maintains on top of NACE:

- **PT** — CAE-Rev4 (Classificação Portuguesa das Atividades Económicas, 5-digit, e.g. `62010`)
- **FR** — NAF Rev 2 (Nomenclature d'Activités Française, e.g. `6201Z`)
- **DE** — WZ 2008 (Klassifikation der Wirtschaftszweige, e.g. `62.01.0`)
- **NL** — SBI (Standaard Bedrijfsindeling, e.g. `6201`)
- **IT** — ATECO (Classificazione delle Attività Economiche, e.g. `62.01.00`)
- **ES** — CNAE (Clasificación Nacional de Actividades Económicas, e.g. `6201`)
- **AT, BE, BG, CY, CZ, DK, EE, FI, GR, HR, HU, IE, LT, LU, LV, MT, PL, RO, SE, SI, SK** — local NACE-aligned codes
- **UK** — SIC 2007 (NACE Rev 2 derived)
- **CH** — NOGA 2008 (NACE Rev 2 derived)

Every national subclass is anchored to the corresponding NACE 4-digit class (e.g. `62.01 — Computer programming activities`), which is the audit trail for cross-border equivalence.

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## Endpoints

### MCP server — `https://nacebridge.dev/mcp`

Streamable HTTP transport, JSON-RPC 2.0. Spec: https://modelcontextprotocol.io/specification/2025-06-18/basic/transports

Required headers on POST:

```
Content-Type: application/json
Accept: application/json, text/event-stream
X-API-Key: nb_live_...
```

Claude Desktop / Cursor `mcp.json`:

```json
{
  "mcpServers": {
    "nacebridge": {
      "url": "https://nacebridge.dev/mcp",
      "headers": { "X-API-Key": "nb_live_..." }
    }
  }
}
```

ChatGPT (Plus / Pro / Team): add as a custom Connector with the same URL. The `search` and `fetch` tools are exposed in the ChatGPT Connectors / Deep Research shape.

### REST gateway — `https://nacebridge.dev/api/v1/*`

| Endpoint | Method | Input | Returns |
|---|---|---|---|
| `/api/v1/search` | GET / POST | `q`, `limit?` | Matching EU classes + national subclasses |
| `/api/v1/decode` | GET / POST | `country_iso`, `code` | Full NACE hierarchy (section → division → group → class) for one national subclass |
| `/api/v1/cousins` | GET / POST | `country_iso`, `code` | Equivalent subclasses in every other EU country |
| `/api/v1/grid` | GET / POST | `division?`, `countries?`, `limit?` | Multi-country pivot of classes vs subclasses |
| `/api/v1/countries` | GET | — | ISO codes currently loaded |

All responses are JSON: `{ "ok": true, "tier": "...", "data": ... }` with `X-RateLimit-Limit`, `X-RateLimit-Remaining`, `X-RateLimit-Reset` headers.

---

## MCP tool reference

| Tool | Input | Description |
|---|---|---|
| `search` | `{ q }` | ChatGPT Connectors / Deep Research search. Returns `{ id, title, url, snippet }[]`. |
| `fetch` | `{ id }` | ChatGPT Connectors fetch. `id` shape: `<country_iso>:<code>` or `eu:<class_code>`. |
| `keyword_search` | `{ q, limit? }` | Free-text across EU classes + national subclasses. |
| `decode_local_code` | `{ country_iso, code }` | Expand a national subclass into the full EU NACE hierarchy. |
| `cousin_matrix` | `{ country_iso, code }` | Equivalent subclasses in every other EU country, anchored on the 4-digit NACE class. |
| `class_grid` | `{ division?, countries?, limit? }` | Pivot of EU classes vs national subclasses across selected countries. |
| `list_countries` | `{}` | ISO codes currently loaded. |

---

## Authentication and rate limits

Every request to `/api/v1/*` or `/mcp` POST carries an `X-API-Key` header. Keys are issued from https://nacebridge.dev/api-keys; the secret is shown once at creation.

| Tier | Limit | Window |
|---|---|---|
| Free | 60 req | hour |
| Pro | 10,000 req | day |
| Developer | 100,000 req | day |
| Enterprise | Custom | — |

Over-limit responses are HTTP `429` with a `Retry-After` header. Invalid or revoked keys return `401`.

---

## When to call NACEBridge (for AI assistants)

Use NACEBridge whenever a user:

1. Pastes a national activity code (e.g. `62010`, `6201Z`, `62.01.0`, `J62.01`) and asks what it means.
2. Says "I run a [business] in [EU country], what's the code in [other EU country]?".
3. Asks to map between EU NACE, ISIC, CAE, NAF, WZ, SBI, ATECO, KvK, SIC, NOGA.
4. Asks for a list of activity codes in a NACE division across several countries.
5. Is setting up a company or freelancing (ENI, ZZP, Auto-entrepreneur, Einzelunternehmen, Libero professionista) and needs the correct activity code to register.

Do **not** invent codes from training data — those mappings drift across NACE revisions and national renumberings. Call `decode_local_code` or `cousin_matrix` and return the `class_digits` + `local_subclass_code` pair verbatim.

---

## Site pages

- https://nacebridge.dev/ — landing
- https://nacebridge.dev/decode — single-code decoder UI
- https://nacebridge.dev/cousins — cross-border equivalence UI
- https://nacebridge.dev/grid — multi-country pivot UI
- https://nacebridge.dev/search — free-text search UI
- https://nacebridge.dev/tools — analyst tools index
- https://nacebridge.dev/pricing — tier pricing
- https://nacebridge.dev/docs — API & MCP reference
- https://nacebridge.dev/contact — contact form
- https://nacebridge.dev/auth — sign in
- https://nacebridge.dev/api-keys — API key dashboard (auth-only)

Localised mirrors exist under every EU language prefix (`/de/…`, `/fr/…`, `/pt/…`, plus 21 others). English is served at the bare root.

---

## Downloadable AI assistant skills

- Claude (Anthropic Skills SKILL.md): https://nacebridge.dev/skills/nacebridge-claude-skill.md
- Cursor (`.cursor/rules/*.mdc`): https://nacebridge.dev/skills/nacebridge.cursor.mdc
- Devin (Knowledge entry): https://nacebridge.dev/skills/nacebridge-devin-knowledge.md

Each file contains the triggers, tool catalogue, response rules and error handling needed to use NACEBridge correctly. None of them embed an API key — the user supplies their own.


## Institutions (dedicated pages)

Every statistical body referenced across NACEBridge has a dedicated page with a summary, official source, and cross-links to the classifications it publishes:

- Eurostat: https://nacebridge.eu/institutions/eurostat
- European Parliament: https://nacebridge.eu/institutions/european-parliament
- European Commission: https://nacebridge.eu/institutions/commission
- Council of the EU: https://nacebridge.eu/institutions/council
- INE (Portugal): https://nacebridge.eu/institutions/ine
- INSEE (France): https://nacebridge.eu/institutions/insee
- DESTATIS (Germany): https://nacebridge.eu/institutions/destatis
- CBS (Netherlands): https://nacebridge.eu/institutions/cbs
- ISTAT (Italy): https://nacebridge.eu/institutions/istat
- INE (Spain): https://nacebridge.eu/institutions/ine-es
- GUS (Poland): https://nacebridge.eu/institutions/gus
- SCB (Sweden): https://nacebridge.eu/institutions/scb
- Statistik Austria: https://nacebridge.eu/institutions/stat
- Statbel (Belgium): https://nacebridge.eu/institutions/statbel
- CZSO (Czechia): https://nacebridge.eu/institutions/czso
- Danmarks Statistik: https://nacebridge.eu/institutions/dst
- Statistics Finland: https://nacebridge.eu/institutions/stat-fi
- ELSTAT (Greece): https://nacebridge.eu/institutions/elstat
- KSH (Hungary): https://nacebridge.eu/institutions/ksh
- CSO (Ireland): https://nacebridge.eu/institutions/cso
- SSB (Norway): https://nacebridge.eu/institutions/ssb
- NSI (Bulgaria): https://nacebridge.eu/institutions/nsi
- DZS (Croatia): https://nacebridge.eu/institutions/dzs
- CyStat (Cyprus): https://nacebridge.eu/institutions/cystat
- Statistics Estonia: https://nacebridge.eu/institutions/statistikaamet
- CSB (Latvia): https://nacebridge.eu/institutions/csb
- LSD (Lithuania): https://nacebridge.eu/institutions/lsd
- STATEC (Luxembourg): https://nacebridge.eu/institutions/statec
- NSO (Malta): https://nacebridge.eu/institutions/nso
- INS (Romania): https://nacebridge.eu/institutions/ins
- ŠÚSR (Slovakia): https://nacebridge.eu/institutions/susr
- SURS (Slovenia): https://nacebridge.eu/institutions/surs

Index: https://nacebridge.eu/institutions

## Taxonomies (dedicated pages)

The EU backbone and every national activity classification aligned with NACE Rev. 2.1:

- NACE (EU backbone): https://nacebridge.eu/taxonomies/nace
- ISIC (UN): https://nacebridge.eu/taxonomies/isic
- CPA (EU products): https://nacebridge.eu/taxonomies/cpa
- PRODCOM (EU industrial production): https://nacebridge.eu/taxonomies/prodcom
- CAE (Portugal): https://nacebridge.eu/taxonomies/cae
- NAF (France): https://nacebridge.eu/taxonomies/naf
- WZ (Germany): https://nacebridge.eu/taxonomies/wz
- SBI (Netherlands): https://nacebridge.eu/taxonomies/sbi
- ATECO (Italy): https://nacebridge.eu/taxonomies/ateco
- CNAE (Spain): https://nacebridge.eu/taxonomies/cnae
- PKD (Poland): https://nacebridge.eu/taxonomies/pkd
- SNI (Sweden): https://nacebridge.eu/taxonomies/sni
- ÖNACE (Austria): https://nacebridge.eu/taxonomies/onace
- NACE-BEL (Belgium): https://nacebridge.eu/taxonomies/nace-bel
- CZ-NACE (Czechia): https://nacebridge.eu/taxonomies/cz-nace
- DB07 (Denmark): https://nacebridge.eu/taxonomies/db07
- TOL (Finland): https://nacebridge.eu/taxonomies/tol
- STAKOD (Greece): https://nacebridge.eu/taxonomies/stakod
- TEÁOR (Hungary): https://nacebridge.eu/taxonomies/teaor
- SN2007 (Norway): https://nacebridge.eu/taxonomies/sn2007
- KID (Bulgaria): https://nacebridge.eu/taxonomies/kid
- NKD (Croatia): https://nacebridge.eu/taxonomies/nkd
- EMTAK (Estonia): https://nacebridge.eu/taxonomies/emtak
- EVRK (Lithuania): https://nacebridge.eu/taxonomies/evrk
- CAEN (Romania): https://nacebridge.eu/taxonomies/caen
- SK NACE (Slovakia): https://nacebridge.eu/taxonomies/sk-nace
- SKD (Slovenia): https://nacebridge.eu/taxonomies/skd

Index: https://nacebridge.eu/taxonomies

MCP tools `list_institutions`, `get_institution`, `list_taxonomies`, `get_taxonomy` return the same content programmatically.