lightrag-section-anything
LightRAG parser engines that turn a PDF into heading-aware blocks (.blocks.jsonl) using the
section-anything library, so LightRAG's
heading-based chunker ("P") and its heading context work on PDFs without a MinerU or Docling
service.
Install
pip install lightrag-section-anything
# latest from GitHub:
pip install "git+https://github.com/Omniwot/section-anything#subdirectory=packages/lightrag-section-anything"
Python 3.11+. Depends on section-anything and lightrag-hku (1.5.7 or later, below 1.7); the
LightRAG server needs lightrag-hku[api]. The engines register through LightRAG's
lightrag.parsers entry point, which the LightRAG server (lightrag-server) and the parser debug
CLI (python -m lightrag.parser.cli) load at startup. When you embed LightRAG as a library, call
load_third_party_parsers() from lightrag.parser.plugins first.
Engines
| Engine | Runs | Cost per 1,000 pages |
|---|---|---|
sectionany_free |
rules (bookmarks, contents, typography) | $0 |
sectionany_quick |
rules + a small model reviewing candidate lines | about $0.07 |
sectionany_standard |
a model reading all lines | about $0.16 (gpt-6-luna, the default); $2.90 with gpt-6.1-sol |
sectionany_local |
quick-style review on a local Ollama model (SECTIONANY_LOCAL_MODEL) |
$0 |
sectionany |
the mode in SECTIONANY_MODE (default free) |
Use
Route PDFs to an engine with LightRAG's LIGHTRAG_PARSER rules, for example:
LIGHTRAG_PARSER=pdf:sectionany_quick-P,pdf:sectionany-P,*:native-teP,*:legacy-R
Settings are the library's SECTIONANY_* environment variables (see its README): API key
(SECTIONANY_API_KEY, else OPENAI_API_KEY for OpenAI's endpoint or ANTHROPIC_API_KEY for
Claude models), models, prices,
SECTIONANY_MAX_USD_PER_DOC (default 0.50), SECTIONANY_OVER_BUDGET=downgrade|fail,
SECTIONANY_MAX_PAGES (500), SECTIONANY_MAX_MB (100), SECTIONANY_EXTRACT_TIMEOUT_SECONDS
(120). The plugin adds SECTIONANY_MODE, SECTIONANY_SYNTHETIC_TITLES and
MAX_PARALLEL_PARSE_SECTIONANY (default 2). Nothing is written to the process environment, so
LightRAG's own model settings are untouched. Cost, model and mode per document are reported in
LightRAG's document status (parse_warnings) and in <name>.sectionany.json.
Tests: SECTIONANY_TEST_PDF=<some.pdf> pytest packages/lightrag-section-anything/tests.
Not yet: tables as tables, images, OCR, re-levelling MinerU/Docling output, a section-path prefix inside embeddings (needs LightRAG's chunker plugins, 1.5.8+).
1 maintainer
Metadata
1 maintainer
Release files for lightrag-section-anything 0.1.1
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