TracePass DPP Compliance Assistant

TracePass MCP Server

A Model Context Protocol server for TracePass — the EU Digital Product Passport platform. It lets AI assistants (Claude, Cursor, IDE agents) manage products, Digital Product Passports, economic-operator parties, and GS1 EPCIS 2.0 supply-chain events.

It speaks the full MCP protocol — tools, resources, resource templates, and prompts.

Two ways to use it

The same server core ships two ways:

1. Hosted — point your MCP client at https://ai.tracepass.eu/mcp. Nothing to install; always current.
2. Local (npm) — run tracepass-mcp-server via npx. The MCP client launches it as a subprocess and speaks MCP over stdio.

Authentication

The server accepts either of TracePass's two v1 auth methods on the same Authorization: Bearer … header — it forwards whatever you send to the API, which decides. Pick the one that fits how you're connecting:

Which should an AI assistant use? If your MCP client supports OAuth (Claude.ai, ChatGPT, and others), prefer OAuth — the user authorizes the connection once on a TracePass consent screen, you never handle a secret, and access is least-privilege and revocable. If your client only takes a header/token, use an API key.

OAuth 2.0 (recommended for hosted clients)

No config beyond pointing your client at the hosted endpoint — discovery is automatic. On the first unauthenticated request the server returns a 401 whose WWW-Authenticate header carries a resource_metadata URL (RFC 9728) pointing at /.well-known/oauth-protected-resource, which names the TracePass authorization server. The client runs the standard authorization-code flow with PKCE (/api/oauth/authorize → /api/oauth/token), the user approves scopes, and the client stores + refreshes the token. If you distribute your own client, register an app under Developer → OAuth Apps to get a client_id; many hosted clients self-register via Dynamic Client Registration automatically.

Request only the scopes you need, e.g. passports:read passports:write offline_access. Users manage connected apps (and revoke) under Developer → OAuth Apps → Connected Apps.

API key

Mint a tp_… key under Developer → API Keys and send it as a Bearer token.

Hosted:

{
  "mcpServers": {
    "tracepass": {
      "url": "https://ai.tracepass.eu/mcp",
      "headers": { "Authorization": "Bearer tp_YOUR_KEY" }
    }
  }
}

Local (npx / stdio) — the local subprocess can't do an interactive OAuth consent step, so it's API-key only, via the TRACEPASS_API_KEY env:

{
  "mcpServers": {
    "tracepass": {
      "command": "npx",
      "args": ["-y", "tracepass-mcp-server"],
      "env": {
        "TRACEPASS_API_KEY": "tp_YOUR_KEY"
      }
    }
  }
}

Optional env var: TRACEPASS_BASE_URL (defaults to https://app.tracepass.eu) — point the tools at a different TracePass deployment.

Tools

The TracePass v1 API operations are grouped into 7 tools. Each takes an action enum plus action-specific arguments. The tools are:

• tracepass_products - manage the product catalogue (list, get, create, create_batch, update, archive products).
• tracepass_passports - manage Digital Product Passports (list, get, compliance check, registry-readiness check, get/set condition flags, create, suspend, archive, get QR, list snapshots, get snapshot), by id or by serial. Passports are identified via GS1 or four additional EN 18219 schemes (iso15459, iec61406, did, doi); battery passports accept only gs1 and iso15459 (Art. 77(3)). Condition flags are approved yes/no facts (e.g. battery: hasBMS, rechargeable, externalStorageOnly, isStationaryBess) that gate conditional legal duties — setting an approved flag may make additional fields required and block publishing if those fields are empty.
• tracepass_passport_fields - update a passport's category-specific data fields, by id or by serial.
• tracepass_passport_parties - set or remove a passport's economic-operator parties (manufacturer, importer, etc.).
• tracepass_epcis - export, capture, and query a passport's GS1 EPCIS 2.0 supply-chain events.
• tracepass_templates - list and get the DPP category field schemas, each field traced to the EU instrument that mandates it.
• tracepass_scope - check whether a product type needs a Digital Product Passport (check), read the company's catalogue-wide scope report (catalogue_report), and trigger or poll a catalogue refresh run (catalogue_run, catalogue_run_status).

Each tool's full action set:

The *_by_serial actions address a passport by the customer's own serial number instead of its TracePass id. A serial is unique only within a GTIN, so if the same serial exists under two GTINs in your account a serial-only call returns 409 ambiguous_serial — pass the optional gtin arg to disambiguate (or use the by-id action). The same gtin disambiguator applies to every *_by_serial action.

The tracepass_passports compliance action returns a three-tier compliance verdict (compliant / compliant_with_warnings / incomplete) with regulation-cited findings — missing required fields, missing economic-operator parties, format issues, and per-category conditional rules. Read-only; use it to gap-check a passport, fix the cited gaps, then re-check.

A compliant verdict means this passport satisfies the rules encoded here, not this product may be placed on the market. The field specifications are hand-authored from the regulations, not an official EU artefact, and delegated acts are still landing. It is not legal advice.

Second-life batteries

A repurposed, remanufactured or reused battery needs a new passport linked to the original one(s) (Battery Regulation Art. 77(7)). Pass a lineage block to tracepass_passports create:

{ "predecessors": [ { "internalPassportId": "<your original passport id>", "trigger": "repurposing" } ] }

A predecessor is named by internalPassportId (one of your own passports) or by its resolvable identifier. trigger is one of preparation_for_reuse, preparation_for_repurposing, repurposing or remanufacturing. The platform derives batteryStatus from the triggers, stores the block immutably, and links your own originals back to the new passport (successors). A battery placed on the market before 18 Feb 2027 has no original passport: send an empty list with noPredecessorReason. Rule violations return 422 with the rule code.

Battery measurements (living record)

capture_measurements pushes over-life data from your own equipment into a published battery passport: state of health, fades, cycle counts, dynamic values, state of charge, negative events, temperature history (Battery Regulation Annex XIII point 4). Every measurement is kept; the newest per field becomes the passport's current value and sets dynamicDataAsOf. list_measurements and latest_measurements read them back.

They are metered against the plan's monthly measurement allowance, not the daily write budget. Paid plans keep counting past the allowance at no charge; the Free plan stops at its allowance. Reading a passport is never metered.

A note on writes

Some actions cost money or are irreversible — the server's tool descriptions tell the model so:

• tracepass_passports create consumes billable DPP slots. Over-quota creation incurs a per-passport overage charge; the tool surfaces a 402-style message and only proceeds with args.confirmOverage: true after the user agrees.
• tracepass_passports archive is irreversible — the public QR permanently 404s. Use suspend (reversible) when a change might be undone.
• tracepass_epcis — export, capture and query are on every plan, Free included; captured events count against the plan's event allowance, and capture over it returns an overage or hard-block message.

Resources

Read-only entity data you can attach as conversation context:

• tracepass://products — the product catalogue
• tracepass://product/{id} — one product
• tracepass://passport/{id} — one passport, full field detail
• tracepass://passport/{id}/epcis — a passport's EPCIS 2.0 events
• tracepass://passport/{id}/compliance — a passport's compliance verdict
• tracepass://passport/{id}/registry-readiness — a mechanical pre-submission check modelled on the EU DPP Registry's formal gate: mandatory-field presence, formatting, a resolvable public link, item-level granularity (no commodity-code check: a battery passport's registration identifier is not entered in the customs declaration). Not the substantive compliance verdict, and not a prediction of the real registry's response — its registration API has no published spec. Battery only.
• tracepass://passport/{id}/snapshots — the snapshot history of a passport (newest first): a snapshot on publish and after every change to a non-draft passport; each entry carries version, reason (e.g. published, field_edit, status_change, baseline), actor, snapshotAt, contentHash, hashValid (re-verified on read), restorable flag, and field count.
• tracepass://templates — all 13 DPP category field schemas
• tracepass://template/{category} — one category's full field schema

Prompts

Reusable DPP workflows the client surfaces as slash-commands:

• audit_passport — review a passport for completeness and compliance readiness
• onboard_product — create a product and its first passport
• explain_dpp_requirements — explain what a category's compliant DPP must contain, and the regulation behind each field
• compliance_gap_check — produce a prioritised, regulation-cited list of what's blocking a passport's compliant publication
• review_epcis_events — summarise a passport's supply-chain trail

For suppliers: answering a data request

A second, separate endpoint serves suppliers who receive a TracePass data request. It is not part of the tools above. The request email carries a personal address:

https://ai.tracepass.eu/supplier/mcp/<token>

Add it to an AI assistant as a custom connector. For clients that can set headers, https://ai.tracepass.eu/supplier/mcp with Authorization: Bearer <token> works too. The token authorises that one request only; there is no account and no OAuth. The assistant can then:

Answers go to the requester's human review; they never publish anything on their own.

DPP Assistant: EU passport questions

A third endpoint answers questions about EU Digital Product Passport law for anyone with a free TracePass account:

https://ai.tracepass.eu/compliance/mcp

Add it to an AI assistant as a custom connector (in Claude: Customize → Connectors → "+ Add" → "Add custom connector"), then sign in with a TracePass account when asked. It uses OAuth; no API key is needed. Answers cite their source, and each company gets about 100 answers a day. Full guide: tracepass.eu/docs/dpp-assistant.

Development

npm install
npm run build        # tsc -> dist/
npm run typecheck
npm test             # vitest
npm run lint
npm start            # run the hosted HTTP service locally (:8080)
npm run start:stdio  # run the stdio server locally

The hosted service is a plain Node HTTP server (dist/http.js), stateless — each request carries its own API key and builds a fresh MCP session. It is containerised via the Dockerfile; the hosted endpoint runs in the EU.

Listed on Glama

This server is published in the official MCP Registry as eu.tracepass/tracepass and listed on Glama:

License

MIT