# Changelog

All notable changes to anthroposophy.ai are documented in this file.

The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
Versioning follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [1.1.4] - 2026-07-06

### Research workflows

This release serves quote-level verification — the byte-for-byte quotation discipline as an API operation rather than a client-side re-implementation — and fixes the bare-`/mcp` connector failure.

- **Verify a quotation before printing it.** `verify_quote` on a candidate inherited from the secondary literature returns `near_miss` with a word-level diff against the closest corpus window and the verbatim span at its locus — an inherited misquote is caught in one call instead of propagated.

- **Audit a document's quote ledger in one call.** Batch mode takes up to 50 quote+locus pairs and returns per-item verdicts plus an `all_quote_safe` summary — a published artifact's "verified" claim can be the API's output rather than the author's promise.

- **Locate a quote whose wording differs across editions.** Without a locus, `verify_quote` locates candidates corpus-wide and checks every (lang, edition) witness, so a quotation taken from any indexed translation resolves to its locus.

- **Review an elision's surroundings in one call.** `fetch_passage` with `window=N` returns the passage plus up to N neighbors per side under `context.before` / `context.after` — checking that an ellipsis in a spliced quotation hides nothing meaning-inverting no longer costs one call per neighbor.

**Discipline:** only `quote_safe: true` clears a candidate for quotation marks. `match_normalized` means the wording matches but the typography does not — quote `match.verbatim_text` exactly as returned, never your candidate. `near_miss` means the corpus reads differently; quoting the candidate propagates drift. A locus-scoped `no_match` is authoritative for that locus; a corpus-search `no_match` is strong evidence of absence, not proof.

### Added

- Tool `verify_quote`: quote-level verification. `verify_locus` proves a locus exists; this proves a quotation matches. Single mode takes `candidate` with optional scope (`ga` + `lecture` (+ `passage_number`), `lang`, `edition`); batch mode takes `quotes[]` (max 50) and returns per-item results plus a summary with `all_quote_safe`. Verdicts, strongest first: `match` (byte-for-byte substring of a witness; quote-safe), `match_normalized` (matches after typographic normalization only — quote style, dash family, whitespace runs, emphasis markers; not quote-safe; `match.verbatim_text` carries the exact span to quote instead), `match_spliced` (candidate contains ellipses; every fragment matched in order within one lecture; quote-safe only when every fragment matched byte-for-byte), `near_miss` (closest corpus window, with `similarity` and a word-level `differences` diff; `near_miss.corpus_text` carries the verbatim span), `no_match`. Without a locus the check locates candidates corpus-wide via full-text search (exact phrase first, then bag-of-words with 0-hit relaxation); a locus-scoped `no_match` is authoritative for that locus, a corpus-search `no_match` is strong evidence of absence, not proof. All (lang, edition) witnesses are checked by default, so a quotation from any indexed translation can be located. REST equivalent: `POST /v1/steiner/verify-quote`. Deployed 2026-07-06.

- `fetch_passage` parameter `window` (integer 0-5, default 0): returns up to N neighboring passages per side — same lecture, same lang + edition — under `context.before` / `context.after`, each with verbatim text, locus, and URL. One call to review the surroundings of a passage, e.g. the text elided by an ellipsis in a spliced quotation. Also on the REST passage endpoints as `?window=N`. Deployed 2026-07-06.

### Changed

- MCP `tools/list` returns 19 tools (5 GA + 7 FMC + 5 sources + 2 claim-registry).

- Server instructions extended: candidate quotations — especially those inherited from secondary literature or model memory — should be checked with `verify_quote` before being placed inside quotation marks; only `quote_safe: true` clears a candidate.

- MCP server `version` and `SERVER_VERSION` bumped to `1.1.4`.

- Per-IP rate limiting is now enforced on both the REST and MCP surfaces (app-level token bucket, ~240 requests/minute/IP). Over-limit requests receive `429 Too Many Requests` with a `Retry-After` header. This is generous flood protection, not a precise quota — a considerate client rarely encounters it; batch where the surface supports it (`verify_quote` ledger mode) and prefer targeted fetches over sweeps.

- Search boolean operators are now normalized operator-aware: query operands are stemmed and case-folded while uppercase `OR`/`AND`/`NOT`/`NEAR`, quoted phrases, prefix `*`, and column filters are preserved. Previously the query normalizer lowercased the whole query, demoting FTS5's uppercase-only operators to literal terms, so an `OR` union became an implicit-AND and could return an authoritative zero where the individual terms matched — a manufactured verbatim-absence. A 0-hit now reports `absence_signal` `all_alternatives_absent` for an `OR` union (every alternative absent) distinctly from `exact_phrase_absent` for a phrase/`AND`/`NEAR` co-occurrence miss. Related surface additions: `two_voice_volume` on search hits and `fetch_passage` (with an `attribution_warning` on the passage) flags correspondence volumes where a passage may be a letter by a correspondent rather than by Steiner; `edition_coverage` (`{lang: [editions]}`) accompanies any single-`ga` search and `fetch_passage`, and a 0-hit in a language a volume lacks returns `absence_signal=language_not_available` rather than topical absence; `fields=compact` (REST `?fields=compact`) drops per-hit `available_versions[]` and edition metadata for large result sets; and `ga` with `from_date`/`to_date` is documented as the scoping recipe for locating a passage within a long lecture. Deployed 2026-07-07.

### Fixed

- MCP transport: requests to the bare `/mcp` path (no trailing slash) received `307 Temporary Redirect` to `/mcp/`. MCP clients that do not follow redirects never completed `initialize`, so connectors configured with the bare URL attached no tools. Both `/mcp` and `/mcp/` now serve the streamable-HTTP transport directly, with no redirect hop. The redirect had been present since the MCP endpoint first shipped; it surfaced when connector-side redirect handling changed. Deployed 2026-07-06.

## [1.1.3] - 2026-06-11

### Research workflows

This release adds schema-set enumeration and documents the claim-registry tools deployed 2026-06-04.

- **Enumerate the FMC schema set.** `list_fmc_schemas` pages the full set in deterministic id order (`total_count` plus offset/limit echo). Schemas were previously retrievable only individually by `FMC00.NNN` id; no enumeration path existed.

- **Filter schemas by topic or id range.** `query` matches description text and linked-page slugs (descriptions are sparse upstream; linked pages carry most of the topical signal). `prefix` scopes an id range, e.g. `prefix="FMC00.5"`.

- **Image retrieval handoff.** Entries with `image_only: true` carry no usable description; pass the same `schema_id` to `fetch_fmc_schema_image` for the diagram as inline ImageContent. `fetch_fmc_schema` remains the single-schema detail record.

- **Trace registered claims.** `trace_claims(node)` returns registered claims touching a concept or work: typed relations with up to three verbatim anchors each (`leg_a`, `leg_b`, `witness`), every anchor carrying its locus, edition, content hash, and fetch URL. `mode="divergence"` restricts results to divergence claims.

- **Re-verify a claim before asserting it.** `verify_claim(claim_id)` re-runs a registered claim against the serving corpora: each anchored leg is checked by content-hash (registry integrity) and re-fetch (corpus drift). Per-leg verdicts: `anchor_present`, `anchor_missing`, `hash_mismatch`, `fetch_error`.

Discipline: `list_fmc_schemas` entries are curatorial_content — cite as 'FMC schema FMC00.NNN (FMC curator, anthroposophy.eu, CC-BY-SA)'; descriptions are paraphrase and never go inside quotation marks. For claims, quote only `anchor_text`, byte-for-byte, and report relation types as given. `node_not_found` from `trace_claims` means no claims are registered for that node, not that the corpora are silent — use `search_steiner` / `search_sources` for frontier research. The registry's selection principle (steinerian-anthroposophical) is named in every envelope.

### Added

- Tool `list_fmc_schemas`: enumeration and filtered discovery over the FMC schema set. Filters: `prefix` (schema-id prefix), `query` (case-insensitive substring over description text and linked-page slugs). Per-schema fields: `schema_id`, `description` (null when none exists), `schema_image_url`, `linked_pages`, `page_url`, and `image_only` (the signal to call `fetch_fmc_schema_image`). Deterministic schema_id ordering with `total_count` and offset/limit echo. Closes the schema-discovery gap: the wiki's schema-listing page is outside the mirror's indexed namespace, so `fetch_fmc_page` could not reach it.

- Tool `trace_claims` (deployed 2026-06-04; documented here): registered claims touching a concept or work — typed relations across the corpora (Steiner GA, Bible, Aquinas, Church Fathers, Bhagavad Gita, and the other /sources/ works). Each claim carries a relation type (`direct_citation`, `commentary_on`, `doctrinal_appropriation`, `thematic_affinity`, `ambient_influence`, `doctrinal_contrast`, `interpretive_continuation`, `complementary_polarity`), a `mode_tag` (resonance | divergence), a statement, and up to three verbatim anchors (`leg_a`, `leg_b`, `witness`) with loci, editions, content hashes, and fetch URLs. `relation_source` identifies the asserting layer (curated / registered / citation_index / summary_engagement); machine-derived edges are weaker evidence than curated ones. The registry is compiled from reviewed claim files and deployed as an artifact; no write path is exposed on the public surface.

- Tool `verify_claim` (deployed 2026-06-04; documented here): live re-verification of a registered claim. Each anchored leg is checked by content-hash against the registry (integrity) and re-fetch against the serving corpora (drift). Per-leg verdicts: `anchor_present`, `anchor_missing` (treat the claim as unverified), `hash_mismatch` (registry integrity failure), `fetch_error` (infrastructure, not drift). `ok=true` means every anchored leg verified at `verified_at`. Claim ids come from `trace_claims` envelopes (`edges[].claim_id`).

### Changed

- MCP `tools/list` returns 18 tools (4 GA + 7 FMC + 5 sources + 2 claim-registry). Corrects the 1.1.2 entry, which stated 14; the count at 1.1.2 was 15 (`search_anthroposophy` omitted from its FMC arithmetic).

- MCP server `version` and `SERVER_VERSION` bumped to `1.1.3`. The server `version` field now references the `SERVER_VERSION` constant instead of carrying a second literal; the two values had drifted apart twice before 1.1.2.

## [1.1.2] - 2026-05-23

### Research workflows

This release adds the /sources/ corpus. It is curated by Steiner-engagement, not by canon — these are the foundational texts the GA itself takes up.

- **From a Steiner lecture to its source text.** `find_source_chapters_for_ga_locus("GA 142, 1912-12-28")` returns the Sources chapters the curator has linked to that lecture (Bhagavad Gita Discourses, Mahabharata Parvas, the Pauline epistles as the GA 142 counterpart text). `fetch_source_chapter` then quotes the verses verbatim.

- **From a foundational text to Steiner's treatment of it.** `fetch_source_summary` on the Kaṭha Upanishad or *De Anima* Book II names the verified GA loci where Steiner engages it; `fetch_passage` returns his actual words.

- **Cross-corpus surveys in a single call.** `search_anthroposophy(query=..., corpus="all")` fans GA + Free Man Creator (FMC) + Sources together, distinguishing hits by `[ga] / [fmc] / [sources]` tags with per-corpus totals.

- **Honest gap-detection.** When the curator has examined a chapter and Steiner did *not* engage it, `steiner_status: "not_engaged"` marks the absence explicitly. Aristotle's *De Anima* carries this flag.

- **Stream-filtered comparative work.** `search_sources(stream="indian")` scopes to Vedic / Upanishadic / Gita / Mahabharata material; `stream="greco-christian"` to Patrologia + Aristotle + Aquinas + Hermetic Corpus; `stream="western-european"` to the Beguine + Rhineland + Theosophical + Goethean strands.

- **Curator's cross-tradition congruences as named syntheses.** Each summary surfaces the FMC curator's explicit cross-tradition observations (e.g. *De Anima*'s tripartite soul ↔ Vedanta's *pancha-kosha* ↔ Plotinus's nous-triad ↔ Kabbalah's *nefesh / ruach / neshamah*) as paraphrase the curator owns, never as quotes from those traditions.

Discipline: only `fetch_source_chapter` is quote-safe (`quote_safe=true`). `fetch_source_summary`, `find_source_chapters_for_ga_locus`, and every `steiner_loci.statement` field are FMC-curatorial paraphrase (`quote_safe=false`) — they capture the verified loci but they never go inside quotation marks.

### Added

- `/sources/` corpus integration — Sacred, Inspired and Foundational Texts across 5 wisdom-streams (Indian, Persian, Egyptian-Hebrew, Greco-Christian, Western-European). Vedic scripture, the Greek-philosophical tradition (Aristotle, Plato, Plotinus), Patrologia (Church Fathers), Aquinas (Summa Theologiae + Summa Contra Gentiles), Beguine + Rhineland mysticism, Hermetic Corpus, Rosicrucian Manifestos, Theosophical inheritance (Isis Unveiled, Secret Doctrine, Mahatma Letters), Goethean works.

- Tool `search_sources`: full-text search over /sources/ chapters. Filters: `work`, `lang`, `edition`, `stream`, `tradition`, `form`, `year_from`, `year_to`. Returns ranked chapter hits with `chapter_locus`, snippet, curatorial blurb, and `summary_url` (when present) pointing at the FMC-curatorial paraphrase block.

- Tool `fetch_source_chapter`: retrieve verbatim chapter text by `chapter_locus` (`<work>[/<subwork>...]/<chapter>`). Returns `text_trust='verbatim'`, `quote_safe=true`, parent breadcrumbs, descriptor subtitle + blurb, and `available_versions[]`. Use to obtain quote-safe text from /sources/.

- Tool `fetch_source_summary`: retrieve the FMC-curatorial paraphrase block for a chapter or work — theme, soul-faculty, Steiner engagement (paraphrase + verified GA loci, or the honesty-gap sentinel "not engaged in the GA corpus"), cross-tradition congruences. `text_trust='paraphrase'`, `quote_safe=false`. The structural verbatim-vs-paraphrase split that prevents accidental quotation of curator-summary content.

- Tool `list_source_works`: discovery — enumerate /sources/ works by `stream`, `tradition`, `form`, `parent_locus`, `top_level_only`, `has_summary`. Returns work_locus, name, tradition, year_approx, chapter_count, word_count, landing_url, summary_url.

- Tool `find_source_chapters_for_ga_locus`: reverse cross-reference (sources → GA). Given a GA locus (`GA 142, 1912-12-28`) or volume (`142`), returns which /sources/ chapters cite that lecture, with paraphrase statements. Driven by the `sources_ga_xref` bridge, populated from chapter and work summaries.

- `search_anthroposophy` umbrella extended with `corpus='sources'` and `corpus='all'`. `'all'` fans GA + FMC + sources in a single call with round-robin interleave; `'both'` remains the back-compat default (GA + FMC). Response carries `sources_total` alongside `ga_total` and `fmc_total`.

- Tool `fetch_fmc_schema_image`: returns inline ImageContent for FMC schemas, mirror-first with upstream fallback. Resolves the image-fetch gap where MCP clients could not follow MediaWiki redirects to the upstream JPEGs.

### Changed

- Top-of-document **Quotation discipline (read first)** block in server `instructions` extended with a /sources/ paragraph. `fetch_source_chapter` returns quote-safe text (`text_trust='verbatim'`); `fetch_source_summary` returns FMC-curatorial paraphrase (`text_trust='paraphrase'`, `quote_safe=false`) — never quote, even when paraphrasing is tight. Each `steiner_loci` entry inside a summary names a verified GA locus retrievable via `fetch_passage`; the surrounding statement is the curator's paraphrase, not Steiner's words. `find_source_chapters_for_ga_locus` returns paraphrase as well.

- `search_anthroposophy.corpus` enum: `['ga','fmc','both']` → `['ga','fmc','sources','both','all']`. Tool description acknowledges sources as a third corpus alongside GA and FMC.

- MCP `tools/list` returns 14 tools (4 GA + 5 FMC + 5 sources).

- MCP server `version` and `SERVER_VERSION` bumped to `1.1.2`. Both were stale prior to this release (`1.1.0` and `1.0.0` respectively).

### Fixed

- `scripts/deploy_site.sh` parity probe: added retry/backoff (8 attempts, 0.5s × attempt#) to tolerate uvicorn's multi-worker spawn window. `systemctl is-active` returned `active` before all workers had bound to port 8044, causing a false rollback on the 2026-05-22 deploy.

- `v2/server/main.py`: removed a stale `import sources_shared` that crashed all 4 anthro-api workers with `ModuleNotFoundError` on startup (the module is on the MCP service's path, not the API service's). The /sources/ REST endpoints remain deferred per the MCP-first pattern; the import was dead code.

- `find_fmc_pages_for_ga_locus.inputSchema`: removed the top-level `anyOf` that required either `ga_locus` or `ga_volume`. Anthropic's `custom` tool API rejects top-level `anyOf` / `oneOf` / `allOf` in input_schema; any agent call that included this tool in its toolset was failing with `400 tools.N.custom.input_schema: input_schema does not support oneOf, allOf, or anyOf at the top level`. The field-presence constraint is now enforced in the dispatch handler instead (which already validated the same rule and returned `error_code: "missing_argument"`). A regression test (`test_no_top_level_schema_combinators`) sweeps every FMC tool schema for top-level combinators.

## [1.1.1] - 2026-05-18

### Research workflows

This release adds the quotation-discipline layer for corpus citations.

- **Anything inside quotation marks must be byte-for-byte from a corpus retrieval.** `fetch_passage`, `fetch_source_chapter`, or a `quoted_span` record with `status=stored` — minor trimming, smoothing, or dropping a single word counts as paraphrase, even when self-labelled as quoting.
- **0-hit responses carry an authoritative "do not quote" signal.** `search_steiner` / `search_anthroposophy` / `search_sources` return `corpus_verdict: "NO_MATCH — ..."` in the response payload when `total == 0`. The verdict is authoritative: the queried text is not in the indexed corpus.
- **Bare GA-volume-and-year citations are rejected as unverified.** A citation such as "GA 26, 1924" without a specific lecture-date or passage-number is not a verified citation.
- **Reverse-lookup questions get the dedicated tool.** "Which FMC pages cite GA 146, 1913-06-02?" routes to `find_fmc_pages_for_ga_locus`, not generic FTS — exact-locus questions answered by an exact-locus tool.

Citations in agent output therefore reflect retrieval rather than training memory; a "not in corpus" answer is authoritative.

### Added

- `corpus_verdict` field on `search_steiner` and `search_anthroposophy` responses when `total == 0`. Carries an authoritative "do not quote" signal in the response payload, so the agent reads it directly rather than relying only on session-level instructions.

### Changed

- New top-of-document **Quotation discipline (read first)** block in server `instructions`. Requires `search_steiner` → `fetch_passage` before opening quotation marks. 0-hit corpus results are authoritative. Bare GA-number-plus-year citations (e.g. "GA 26, 1924") rejected as unverified. **Byte-for-byte means byte-for-byte**: dropping a single word ('thus', 'then', 'also') or trimming for slide-readability breaks verbatim status; self-labeling a paraphrase doesn't exempt it.

- Additional agent-discipline blocks in server `instructions`: inline citation rendering at parity with web-source linking; section references must use `<page_slug>#<section_anchor>` form; reverse cross-reference questions must use `find_fmc_pages_for_ga_locus`; stay inside the corpus when `verify_locus` returns true; citation follow-ups must verify both page and section anchor before answering.

- Tool `find_fmc_pages_for_ga_locus`: description lead rewritten around the question pattern it handles ("which FMC pages cite this lecture?"); routes away from `search_anthroposophy` for reverse-lookup queries.

- Tool `search_anthroposophy`: closing "When NOT to use this tool" block redirects exact-locus reverse lookups to `find_fmc_pages_for_ga_locus`.

- Shared FMC source-discipline contract (in `search_anthroposophy` + `fetch_fmc_page` descriptions): closing **Quotation-marks discipline** sentence reserves quotation marks for `quoted_span` records with `status='stored'` or verbatim Steiner passages from `fetch_passage`.

### Fixed

- `find_fmc_pages_for_ga_locus.inputSchema` now declares `anyOf` requiring `ga_locus` or `ga_volume`. Was permissive on `{}`.

- Removed dead `corpus` argument from `search_steiner` / `fetch_passage` / `fetch_parallel` dispatch. Handlers pass `corpus="steiner"` as a literal. `fetch_parallel.inputSchema` no longer advertises the single-value `corpus` enum.

## [1.1.0] - 2026-05-14

### Research workflows

This release adds the Free Man Creator (FMC) curatorial layer ([anthroposophy.eu](https://anthroposophy.eu) — pages, schemas, structured quoted-span records, and GA cross-references) to the MCP surface alongside the GA.

- **Reverse cross-reference (GA → FMC).** `find_fmc_pages_for_ga_locus("1913-06-02-GA146")` returns the FMC pages citing a GA locus, with attribution class (`adjacent` / `section-inferred` / `main-body-reference`).
- **Curatorial page retrieval.** `fetch_fmc_page("Krishna_impulse")` returns ordered curatorial chunks (lead, sections, subsections, discussion notes) plus `quoted_span` records with provenance.
- **Schema retrieval.** `fetch_fmc_schema("FMC00.389A")` returns description, image URL, linked pages, and cited GA loci.
- **Link-graph traversal.** `traverse_anthroposophy_links` runs BFS over the FMC cross-link graph (depth 1-3, configurable max-nodes).

FMC content is CC-BY-SA paraphrase; `quoted_span` records carry the curator's structured provenance (`status=stored` for inline verbatim, `status=referenced` for GA pointers that resolve via `fetch_passage`). The unified `search_anthroposophy` umbrella ranks GA + FMC hits together for queries spanning both.

### Added

- FMC ([anthroposophy.eu](https://anthroposophy.eu)) corpus integration. The curatorial wiki at [anthroposophy.eu](https://anthroposophy.eu) is now retrievable through the MCP connector alongside the Gesamtausgabe. License: CC-BY-SA.

- Tool `search_anthroposophy`: unified full-text search across the GA and FMC corpora. Filters: `corpus`, `chunk_class`, `target_corpus`, `status`, `page_slug`. Inherits GA filters (`lang`, `edition`, `ga`, `ga_range`, `from_date`, `to_date`). Detects ranking mode from query content (`primary_seeking`, `comparative`, `curatorial`, `default`) and adjusts interleave order accordingly.

- Tool `fetch_fmc_page`: retrieve an FMC page by slug. Returns ordered curatorial chunks (lead, sections, subsections, discussion notes), `quoted_span` records with provenance, and the page's GA cross-references.

- Tool `fetch_fmc_schema`: retrieve a schema by `FMC00.NNN` id. Returns description, image URL, linked pages, and cited GA loci.

- Tool `traverse_anthroposophy_links`: BFS over the FMC link graph from a root page slug. Depth clamped to [1, 3]; configurable `max_nodes`.

- Tool `find_fmc_pages_for_ga_locus`: reverse cross-reference. Given a GA locus (`1913-06-02-GA146`) or volume (`146`), return all FMC pages that cite it with attribution class (`adjacent`, `section-inferred`, `main-body-reference`).

- Source-discipline contract enforced in tool response structure. `quoted_span` records with `status=referenced` carry no verbatim text; agents follow `target_locus` to the primary corpus. Records with `status=stored` carry the full `embedded_attribution` chain. All FMC retrieval results carry `primary_anchor` (corpus, page_url, curator, license) and `content_hash` for citation stability.

### Changed

- MCP `tools/list` returns 9 tools (4 GA + 5 FMC).

## [1.0.0] - 2026-05-07

### Research workflows

Initial release. The complete Gesamtausgabe (GA 1 through GA 354, public domain) behind a single MCP surface.

- **Search the full corpus by keyword.** `search_steiner` runs FTS5 with Porter stemmer + diacritic normalization. Filters: `lang`, `edition`, `ga`, `ga_range`, `from_date`, `to_date`.
- **Verify a GA reference exists before citing.** `verify_locus` confirms `(ga, lecture_date)` is in the corpus — useful as a citation gate before publishing or quoting.
- **Retrieve any passage verbatim.** `fetch_passage(ga, lecture, passage_number, lang, edition)` returns text + stable citation URL in either German original or available English translation.
- **View parallel translations side-by-side.** `fetch_parallel` returns multiple editions of the same locus; per-edition translator + year + basis are surfaced, and an `alignment_confidence` flag warns when paragraph counts diverge between source and translation.

German originals and English translations are cross-retrievable per locus. Browseable HTML at `/v1/steiner/<lang>/ga/<vol>/<date>/p<NNN>`, with content-negotiated JSON via the `.json` suffix. The MCP surface is anonymous and per-IP rate-limited at the edge; no account required.

### Added

- Initial public release.

- Gesamtausgabe corpus (GA 1 through GA 354). Rudolf Steiner's books, lectures, and lecture cycles. Public domain.

- Multilingual retrieval. English translations alongside German originals. Per-edition tracking (translator, year, basis). `alignment_confidence` flag marks paragraph-count divergence between source and translation.

- MCP server at <https://anthroposophy.ai/mcp>. Streamable HTTP transport per MCP spec 2025-03-26. Anonymous access; per-IP rate limiting at the edge.

- Tool `search_steiner`: FTS5 search over the Gesamtausgabe. Porter stemmer with diacritic normalization. Filters: `lang`, `edition`, `ga`, `ga_range`, `from_date`, `to_date`, `corpus`.

- Tool `verify_locus`: confirm a GA reference exists in the indexed corpus before citing.

- Tool `fetch_passage`: retrieve a verbatim Steiner passage by `(ga, lecture, passage_number, lang, edition)`. Returns text and a stable citation URL.

- Tool `fetch_parallel`: retrieve the same passage across multiple translation editions side-by-side.

- REST API at <https://anthroposophy.ai/v1/>.

- Browseable passages at `/v1/steiner/<lang>/ga/<ga_volume>/<lecture_date>/p<NNN>`. Content negotiation returns HTML to browsers, JSON to agents via the `.json` suffix.

[1.1.3]: https://anthroposophy.ai/changelog#113---2026-06-11
[1.1.2]: https://anthroposophy.ai/changelog#112---2026-05-23
[1.1.1]: https://anthroposophy.ai/changelog#111---2026-05-18
[1.1.0]: https://anthroposophy.ai/changelog#110---2026-05-14
[1.0.0]: https://anthroposophy.ai/changelog#100---2026-05-07