readseek

readseek is a structural source and PDF reader for scripts, editors, and coding agents. It emits compact JSON with stable line/hash anchors, structural symbol maps, parse diagnostics, AST search matches, references, and rename plans.

Installation

Install the npm wrapper and a prebuilt binary:

npm install -g @jarkkojs/readseek

Install the native program from crates.io:

cargo install readseek

Prebuilt binaries are available for macOS ARM64; Linux ARM64 and x64; and Windows x64. The Linux binaries are static glibc PIE executables.

To build and install from source:

make install

Source builds require CMake, Clang/libclang, and a C++ compiler because image inference uses llama-cpp-2.

GPU acceleration can be enabled at build time with the metal, opencl, rocm, or vulkan Cargo feature. CPU builds can enable openmp for OpenMP parallelism.

Plugins

Pi extension

The bundled pi-readseek extension exposes ReadSeek's anchored file and structural-code tools in Pi:

pi install npm:pi-readseek

OpenCode plugin

The opencode-readseek plugin provides the same anchored and structural tools in OpenCode.

Add the plugin to opencode.json:

{
  "plugin": ["opencode-readseek"]
}

Vim plugin

The bundled readseek.vim plugin is a Vim9-only frontend with anchored range and symbol reads, file detection, structural navigation, parser diagnostics, search, references, and rename operations. It requires Vim9 with +job, +channel, +popupwin, and +textprop; Neovim is not supported. Install it directly with a Vim plugin manager, for example Plug 'jarkkojs/readseek'. Run :ReadSeekInstall to install the matching prebuilt ReadSeek release binary; installation is explicit by default.

Common commands

readseek detect src/main.rs
readseek read src/main.rs:10 --end 20
readseek read report.pdf --page 3
readseek view report.pdf --page 3
readseek map src/main.rs
readseek check src/main.rs
readseek symbol src/main.rs:run --name
readseek identify src/main.rs:42 --column 8
readseek def src run --language rust --format plain
readseek refs src main --language rust --format plain
readseek search src 'fn $NAME() { $$$BODY }' --language rust
readseek rename src/main.rs --line 42 --column 8 --to renamed

To write JSON output to a file instead of stdout, place the global option before the command:

readseek --output result.json detect src/main.rs

Use a stdin: target prefix with detect, read, map, check, symbol, and identify to analyze unsaved editor buffers while still providing a path for language detection and a cursor address:

printf '%s\n' 'fn main() {}' | readseek identify stdin:scratch.rs:1 --column 4

Images and PDFs

detect reports image metadata and PDF page counts. read returns bounded base64 images by default; use --image for a local analysis mode:

readseek read photo.jpg                   # default: bounded base64 image
readseek read photo.jpg --image caption   # detailed natural-language caption
readseek read photo.jpg --image objects   # object labels + bounding boxes
readseek read photo.jpg --image ocr       # extracted text
readseek read photo.jpg --image all       # caption, objects, and OCR in one pass

Inference defaults to the balanced profile. fast uses fewer visual tokens for lower latency, while accurate retains more visual detail for dense OCR and small objects:

readseek read photo.jpg --image caption --vision-profile fast
readseek read scan.png --image ocr --vision-profile accurate

Use --vision-diagnostics to emit cache status, backend devices, token counts, per-stage timings, throughput, and peak RSS as JSON on stderr. For repeatable warm measurements, --vision-benchmark N runs one warmup followed by N measured iterations (currently image files only):

readseek read fixture.png --image all --vision-benchmark 5 \
  >result.json 2>benchmark.json

CPU tuning overrides are available through READSEEK_VISION_THREADS, READSEEK_VISION_BATCH, and READSEEK_VISION_UBATCH. Values must be positive, and the micro-batch cannot exceed the logical batch. Compare overrides on a fixed representative image corpus; larger batches can improve prefill while increasing peak memory.

PDF reads return page-tagged Markdown and page-associated embedded images. Use --page to select one page; the same image mode applies to each embedded image. After initializing .readseek/, view creates or reuses a persistent structural PDF index and returns an overview that can be narrowed by page, node, kind, or depth. Line/hash suffixes, --end, --limit, and --language do not apply to visual files.

The Qwen3-VL GGUF language model and Q8_0 multimodal projector download lazily into the user cache, are checksum-verified once, and then use a metadata-bound verification marker on later starts. Inference uses the backends enabled in the build; CPU-only captioning can still take substantial time.

Cache

readseek init [path] creates and populates .readseek/maps/ and .readseek/def-index/. Map-dependent commands update entries on demand and discover .readseek/ by walking up from the target path, or use the directory passed by --readseek-dir. view creates PDF structure indexes and extracted assets under .readseek/documents/ on demand. Image analysis caches results under the .readseek/ found from the current working directory. Cache entries are profile-specific.

Documentation

The manual page provides the full CLI reference:

man ./man/man1/readseek.1

Pass --help to any command for command-specific usage.

Licensing

The native readseek crate is licensed under LGPL-2.1-or-later. The @jarkkojs/readseek wrapper and platform packages declare Apache-2.0 AND LGPL-2.1-or-later; the bundled plugins use Apache-2.0 or MIT as noted in their package directories.

The downloaded Qwen/Qwen3-VL-2B-Instruct-GGUF model is licensed under Apache-2.0.