# Balthasar & Speyr Catalogue (remote · mcp.balthasarspeyr.org)

Public catalogue, semantic search and source texts of Hans Urs von Balthasar and Adrienne von Speyr.

- Trust score: 69/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- remote · `mcp.balthasarspeyr.org`: 69/100 (this document), [markdown](https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp.md), [page](https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp)

## Channel facts

- Endpoint: `https://mcp.balthasarspeyr.org/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.2`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-20.

- **Endpoint Security**: 74/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 2017 tokens (~100/item across 20 items; 20 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 20 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 21 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Balthasar & Speyr Catalogue MCP server?

Balthasar & Speyr Catalogue is a hosted endpoint at https://mcp.balthasarspeyr.org/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http balthasarspeyr-catalogue 'https://mcp.balthasarspeyr.org/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "balthasarspeyr-catalogue": {
      "url": "https://mcp.balthasarspeyr.org/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "balthasarspeyr-catalogue": {
      "type": "http",
      "url": "https://mcp.balthasarspeyr.org/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.balthasarspeyr-catalogue]
url = "https://mcp.balthasarspeyr.org/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "balthasarspeyr-catalogue": {
      "type": "remote",
      "url": "https://mcp.balthasarspeyr.org/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add balthasarspeyr-catalogue --url 'https://mcp.balthasarspeyr.org/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  balthasarspeyr-catalogue:
    url: "https://mcp.balthasarspeyr.org/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "balthasarspeyr-catalogue": {
      "Transport": "http",
      "Url": "https://mcp.balthasarspeyr.org/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add balthasarspeyr-catalogue -t streamable-http -u 'https://mcp.balthasarspeyr.org/mcp'
```

### Other

```json
{
  "mcpServers": {
    "balthasarspeyr-catalogue": {
      "type": "http",
      "url": "https://mcp.balthasarspeyr.org/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-20 (score 69, 0)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional improvement] Stability: unverified → 0.03
- [functional] Server version: 1.0.0 → 078e308250c4963db83a0d74c1e21b346baf3cbc
- [functional] New tool “get_vocation_discernment_contact”
- [cosmetic] Tool “aggregate_catalog” changed its title: Compare catalogue groups
- [cosmetic] Tool “count_catalog” changed its title: Count works, editions and journals
- [cosmetic] Tool “get_catalog_options” changed its title: Read catalogue filters and options
- [cosmetic] Tool “get_common_life_and_mission” changed its title: Read about the shared life and mission
- [cosmetic] Tool “get_community_of_saint_john” changed its title: Read about the Community of Saint John
- [cosmetic] Tool “get_corpus_coverage” changed its title: Check catalogue and text coverage
- [cosmetic] Tool “get_download_links” changed its title: Get publication download links
- [cosmetic] Tool “get_person_life_and_mission” changed its title: Read about an author's life and mission
- [cosmetic] Tool “get_publication_text” changed its title: Read available publication text
- [cosmetic] Tool “get_publications” changed its title: Read publication details
- [cosmetic] Tool “get_topic_evidence” changed its title: Read evidence for a topic
- [cosmetic] Tool “get_topics_by_period” changed its title: Compare topics across periods
- [cosmetic] Tool “get_work” changed its title: Read work and edition details
- [cosmetic] Tool “list_journals” changed its title: Browse journals
- [cosmetic] Tool “list_publications” changed its title: Browse publications
- [cosmetic] Tool “list_works” changed its title: Browse works
- [cosmetic] Tool “search_life_mission_and_community” changed its title: Search life, mission and community texts
- [cosmetic] Tool “search_publication_text” changed its title: Find words in publication text
- [cosmetic] Tool “search_works” changed its title: Find works by topic

### 2026-09-19 (score 69)

First indexed and scored.

## MCP tools (20)

### `list_works` (~88 tokens)

Browse works

List public works with combinable filters, exact counts and optional facets. Includes works without digital publications. Default year is original publication year.

Input parameters:

- `facets` (boolean)
- `filters` (object)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)
- `sortBy` (string)
- `sortOrder` (string)

### `get_work` (~37 tokens)

Read work and edition details

Get the complete bibliographic work record and all its public publications. Author/type scope applies to IDs too.

Input parameters:

- `workId` (string, required)

### `list_publications` (~91 tokens)

Browse publications

List publication summaries. workTypes filters contained works; publicationTypes filters derived publication classification. Filters on author/type/original year match the same contained work.

Input parameters:

- `facets` (boolean)
- `filters` (object)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)
- `sortBy` (string)
- `sortOrder` (string)

### `get_publications` (~95 tokens)

Read publication details

Get detailed publication records by filters.publicationIds or any combination of listing filters, including workTypes and publicationTypes. Paginated; full texts use get_publication_text.

Input parameters:

- `facets` (boolean)
- `filters` (object)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)
- `sortBy` (string)
- `sortOrder` (string)

### `get_publication_text` (~81 tokens)

Read available publication text

Read the downloadable EPUB/PDF text in ordered sections. Continue using nextOffset until null. Includes source URL, format and locators. Does not assume publication.text is complete. A collective source is the publication text, not necessarily one contained work.

Input parameters:

- `limit` (integer)
- `offset` (integer)
- `publicationId` (string, required)

### `search_publication_text` (~84 tokens)

Find words in publication text

Find literal phrases, ignoring case and accents, in a public publication's extracted EPUB/PDF text. Returns bounded exact context with locators and nextOffset; no embeddings or generated summaries. A collective publication may contain several authors.

Input parameters:

- `limit` (integer)
- `offset` (integer)
- `publicationId` (string, required)
- `query` (string, required)

### `get_download_links` (~45 tokens)

Get publication download links

Get existing download links, optionally checking availability. Resolves verified source corrections. Does not generate files.

Input parameters:

- `checkAvailability` (boolean)
- `publicationId` (string, required)

### `get_catalog_options` (~30 tokens)

Read catalogue filters and options

Get recognized and enabled types, authors, language codes and public subject labels. Corpus expansion is configuration controlled.

### `get_corpus_coverage` (~43 tokens)

Check catalogue and text coverage

Get coverage and exclusions by author and original language under bibliography filters. Use before comparisons; unavailable text is not evidence of absence.

Input parameters:

- `filters` (object)

### `search_works` (~116 tokens)

Find works by topic

Search public catalog metadata and complete or selected passages with multilingual embeddings. Queries may be in any language. Evidence is grouped by bibliographic work and identifies one selected analysis language, original/translation status, source and coverage. Optional lexicalQueries provide BM25 terms in the selected analysis language. Catalog descriptions are not author quotations; partial book selection cannot establish thematic absence. Listing tools provide exhaustive bibliographies.

Input parameters:

- `filters` (object)
- `lexicalQueries` (array)
- `limit` (integer)
- `query` (string, required)

### `get_common_life_and_mission` (~55 tokens)

Read about the shared life and mission

Return exact Spanish passages about the encounter, common work and shared mission of Hans Urs von Balthasar and Adrienne von Speyr. The service does not summarize or infer.

Input parameters:

- `topic` (string)

### `get_person_life_and_mission` (~69 tokens)

Read about an author's life and mission

Return exact Spanish biographical and mission passages for Hans Urs von Balthasar or Adrienne von Speyr. The mission topic also includes explicitly identified common-mission evidence. The service does not summarize or infer.

Input parameters:

- `person` (string, required)
- `topic` (string)

### `get_community_of_saint_john` (~60 tokens)

Read about the Community of Saint John

Return exact Spanish passages about the identity, consecrated life, patrons, prayer and mission of the Community of Saint John, with existing related-text links. The service does not summarize or infer.

Input parameters:

- `topic` (string)

### `get_vocation_discernment_contact` (~65 tokens)

Get vocation discernment and personal contact information

Use when someone is interested in the Community of Saint John, in consecrating themselves in it, or asks about vocation, discernment of a state of life, or the Spiritual Exercises. Returns the Community's Spanish invitation to personal accompaniment and official contact details.

### `search_life_mission_and_community` (~89 tokens)

Search life, mission and community texts

Search exact Spanish passages about Balthasar, Speyr, their common mission and the Community of Saint John. Matching is lexical and accent-insensitive; results are source evidence, not generated answers.

Input parameters:

- `offset` (integer)
- `pageSize` (integer)
- `question` (string, required)
- `subjects` (array)
- `topics` (array)

### `count_catalog` (~45 tokens)

Count works, editions and journals

Count distinct public works, editions and journals using combined filters, including exact baselReferences or baselReferencePrefix. No bibliography or text is returned.

Input parameters:

- `filters` (object)

### `aggregate_catalog` (~83 tokens)

Compare catalogue groups

Group distinct works by up to two dimensions. Results are paginated. Edition dimensions refer to matching editions; counts must not be summed across overlapping groups.

Input parameters:

- `filters` (object)
- `groupBy` (array, required)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)
- `periodYears` (integer)

### `list_journals` (~61 tokens)

Browse journals

List identified journals with aliases, distinct article counts and documented original years. Unknown references are reported by count_catalog.

Input parameters:

- `filters` (object)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)

### `get_topics_by_period` (~112 tokens)

Compare topics across periods

Compare precomputed thematic indicators by period. Editorial and lexical assignments are default; filters.includeSemantic explicitly includes embedding associations. firstYears requires exactly one author and starts at their earliest catalogued work. Percentages use evaluable works, not semantic top-k results.

Input parameters:

- `filters` (object)
- `firstYears` (integer)
- `interval` (string)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)
- `periods` (array)

### `get_topic_evidence` (~67 tokens)

Read evidence for a topic

Read bounded evidence for precomputed editorial, lexical or optional semantic topic assignments. Supports bibliography filters including baselReferences. Continue using nextOffset.

Input parameters:

- `filters` (object)
- `offset` (integer)
- `page` (integer)
- `pageSize` (integer)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp#diagnostics

## Score history

- 2026-09-20: 69
- 2026-09-19: 69

## Common questions

### What is the Balthasar & Speyr Catalogue MCP server?

Balthasar & Speyr Catalogue is an MCP server listed in the public MCP registry as io.github.balthasarspeyr/catalogue. Public catalogue, semantic search and source texts of Hans Urs von Balthasar and Adrienne von Speyr. This page covers its hosted endpoint (https://mcp.balthasarspeyr.org/mcp).

### Is the Balthasar & Speyr Catalogue MCP server safe to use?

Balthasar & Speyr Catalogue scores 69 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Balthasar & Speyr Catalogue MCP server expose?

Balthasar & Speyr Catalogue exposes 20 tools: list_works, get_work, list_publications, get_publications, get_publication_text, and 15 more. Their descriptions and schemas cost roughly 1,416 tokens of context every time the server is loaded.

### Does the Balthasar & Speyr Catalogue MCP server require authentication?

No. We connected to Balthasar & Speyr Catalogue without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Balthasar & Speyr Catalogue MCP server still maintained?

Balthasar & Speyr Catalogue is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.balthasarspeyr.org/mcp
- Website: https://balthasarspeyr.org/en/artificial-intelligence
- Changelog RSS feed: https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp.json
- HTML version of this page: https://verifymcp.io/servers/balthasarspeyr-catalogue/mcp