---
mpf: '0.7'
title: Implementation registry — ESFI Docs
url: https://docs.esfi.eu/standards/mpf/implementation-registry/
mpf-url: https://docs.esfi.eu/standards/mpf/implementation-registry/index.mpf
organization: European Strategy & Future Infrastructure
domain: docs.esfi.eu
lang: en
updated: '2026-11-03'
author: ESFI
provenance: human
source-hash: 0f21f512c553d0544f76a2c7223dae67e0368690de27c16f0bf829f73b3df37c
toc:
  - level: 1
    text: Implementation registry
    id: implementation-registry
  - level: 2
    text: ESFI website
    id: esfi-website
  - level: 3
    text: Verify it
    id: verify-it
  - level: 2
    text: ESFI documentation
    id: esfi-documentation
  - level: 3
    text: Verify it
    id: verify-it-2
  - level: 2
    text: Registry rule
    id: registry-rule
  - level: 2
    text: On this page
    id: on-this-page
spec-origin: esfi.eu
content-origin: docs.esfi.eu
content-id: esfi:page:standards-mpf-implementation-registry
content-parity:
  html: true
  human-visible-source: true
  hidden-sections: false
summary: Evidence of implementation, not permission to implement.
index: true
confidence: confirmed
content-type: reference
companion-footer: ESFI — civilization infrastructure · https://esfi.eu
companion-contact: mailto:hermes@esfi.eu
preferred-representation: mpf
companion-scope:
  cite: true
  summarize: true
  train: true
  index: true
  relay: false
language-variants:
  en: https://docs.esfi.eu/standards/mpf/implementation-registry/index.mpf
  fr: https://docs.esfi.eu/fr/standards/mpf/implementation-registry/index.mpf
  nl: https://docs.esfi.eu/nl/standards/mpf/implementation-registry/index.mpf
  de: https://docs.esfi.eu/de/standards/mpf/implementation-registry/index.mpf
  hr: https://docs.esfi.eu/hr/standards/mpf/implementation-registry/index.mpf
mpf-id: ade401102b3cb12ead48db653b8a610fa42e469c7be12f62ca46421d3af74a3e
---

Language

✕

/standards/mpf/implementation-registry/index.mpf[open file ↗](/standards/mpf/implementation-registry/index.mpf)[spec ↗](/standards/mpf/0.7)✕

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# Implementation registry {#implementation-registry}

**Evidence of implementation, not permission to implement.**

This registry lists deployments for which ESFI can verify generated MPF output. It is deliberately narrower than a list of projects that may intend to support the format. MPF is an open format: anyone can publish and read it without being listed here.

All emitters listed below declare Machine Page Format (MPF) 0.7 and publish inspectable discovery output. Each entry says how to check it yourself.

## ESFI website {#esfi-website}

**Emitter:** `esfi.eu` **Format:** Machine Page Format (MPF) **Declared version:** `0.7` **Reference implementation:** `mpf-build` — [git.esfi.eu/esfi/mpf](https://git.esfi.eu/esfi/mpf)

The ESFI website generates MPF companions for its published HTML pages and a site-level MPF index. The current generated index includes pages in English, French, Dutch and German.

### Verify it {#verify-it}

1.  Fetch `https://esfi.eu/index.mpf`. Confirm that the frontmatter declares `mpf: '0.7'`, `domain: esfi.eu`, an `mpf-url`, a `source-hash`, a `content-id` and an `mpf-id`. **Specification 0.7**
2.  Fetch `https://esfi.eu/llms.mpf` and inspect the generated site index. **Specification 0.7**
3.  Fetch `https://esfi.eu/llms.txt` and confirm that it advertises `MPF: 0.7` and `MPF-index: /llms.mpf`; when `MPF-spec` is present, it must identify the canonical 0.7 specification. **Specification 0.7**
4.  Compute the SHA-256 of the served `https://esfi.eu/` HTML and compare it with `source-hash` in `index.mpf`. A match shows that the pair is in step.
5.  For a translated page, fetch the corresponding `/fr/`, `/nl/` or `/de/` MPF path and compare its `content-id` and `language-variants` with the default-language page. **Specification 0.7**
6.  Fetch `https://esfi.eu/.well-known/mpf` and query `_mpf.esfi.eu` as a DNS TXT record, where published. Confirm that the scope they declare matches `companion-scope` in the page files. **ESFI practice**

## ESFI documentation {#esfi-documentation}

**Emitter:** `docs.esfi.eu` **Format:** Machine Page Format (MPF) **Declared version:** `0.7` **Reference implementation:** `mpf-build` — [git.esfi.eu/esfi/mpf](https://git.esfi.eu/esfi/mpf)

This site generates MPF companions for its pages and a site-level MPF index. Position pages and standards pages declare different processing scope; each page’s frontmatter states its own.

### Verify it {#verify-it-2}

1.  Fetch `https://docs.esfi.eu/llms.txt`. Confirm that it advertises `MPF: 0.7`, an `MPF-index` path and an `MPF-spec` pointing to the canonical 0.7 specification. **Specification 0.7**
2.  Follow the advertised index and inspect an indexed MPF document; its frontmatter must declare `mpf: '0.7'`. **Specification 0.7**
3.  Compare the `source-hash` of any page companion with the SHA-256 of its served HTML.
4.  Open the MPF file of a topic page and of a standards page, and compare their `companion-scope`. The difference is deliberate and declared.
5.  Fetch `https://docs.esfi.eu/.well-known/mpf` and query `_mpf.docs.esfi.eu` as a DNS TXT record, where published. **ESFI practice**

## Registry rule {#registry-rule}

An implementation belongs here only when generated output can be inspected and matched to a published ESFI format version. Planned support, an unused library, or a configuration that has not produced inspectable output is not sufficient.

A listing records that output was verified against a published version. It does not certify the accuracy of the content, the truth of the publisher’s declarations, or the quality of the site.

To propose an implementation for the registry, publish inspectable output first. The steps above are the same ones ESFI uses to verify an entry.

The current format contract is documented in the [Specification 0.7](/standards/mpf/0.7). The previous [Specification 0.6](/standards/mpf/0.6) remains available for historical documents. Version lifecycle rules are documented in [Versioning](/standards/mpf/versioning).

## On this page {#on-this-page}

ESFI — civilization infrastructure · https://esfi.eu