rlmgrep 0.1.4

Grep-shaped CLI search powered by DSPy RLM

rlmgrep

Grep-shaped search powered by DSPy RLM. It accepts a natural-language query, scans the files you point at, and prints matching lines in a grep-like format.

Quickstart

uv tool install --python 3.11 rlmgrep
# or from GitHub:
# uv tool install --python 3.11 git+https://github.com/halfprice06/rlmgrep.git

export OPENAI_API_KEY=...  # or set keys in ~/.rlmgrep
rlmgrep "where are API keys read" rlmgrep/

Requirements

• Python 3.11+
• Deno runtime (DSPy RLM uses a Deno-based interpreter)
• API key for your chosen provider (OpenAI, Anthropic, Gemini, etc.)

Install Deno

DSPy requires the Deno runtime. Install it with the official scripts:

macOS/Linux:

curl -fsSL https://deno.land/install.sh | sh

Windows PowerShell:

irm https://deno.land/install.ps1 | iex

Verify it is on your PATH:

deno --version

Usage

rlmgrep [options] "query" [paths...]

Common options:

• -n show line numbers (default)
• --no-line-number hide line numbers
• -H always show filenames (default)
• -C N context lines before/after (grep-style)
• -A N context lines after
• -B N context lines before
• -m N max matching lines per file
• -g GLOB include files matching glob (repeatable, comma-separated)
• --type T include file types (repeatable, comma-separated)
• --no-recursive do not recurse directories
• -a, --text treat binary files as text
• -y, --yes skip file count confirmation
• --stdin-files treat stdin as newline-delimited file paths
• --model, --sub-model override model names
• --api-key, --api-base, --model-type override provider settings
• --max-iterations, --max-llm-calls cap RLM search effort
• -v, --verbose show verbose RLM output

Examples:

# Natural-language query over a repo
rlmgrep -n -C 2 "token parsing" rlmgrep/

# Restrict to Python files
rlmgrep "where config is read" --type py rlmgrep/

# Glob filters (repeatable or comma-separated)
rlmgrep "error handling" -g "**/*.py" -g "**/*.md" .

# Read from stdin (only when no paths are provided)
cat README.md | rlmgrep "install"

# Use rg/grep to find candidate files, then rlmgrep over that list
rg -l "token" . | rlmgrep --stdin-files --answer "what does this token control?"

Input selection

• Directories are searched recursively by default. Use --no-recursive to stop recursion.
• --type uses built-in type mappings (e.g., py, js, md); unknown values are treated as file extensions.
• -g/--glob matches path globs against normalized paths (forward slashes).
• Paths are printed relative to the current working directory when possible.
• If no paths are provided, rlmgrep reads from stdin and uses the synthetic path <stdin>; if stdin is empty, it exits with code 2.
• rlmgrep asks for confirmation when more than 200 files would be loaded (use -y/--yes to skip), and aborts when more than 1000 files would be loaded.

Output contract (stable for agents)

• Matches are written to stdout; warnings go to stderr.
• Output uses rg-style headings by default:
  • A file header line like ./path/to/file
  • Then line:\ttext for matches, line-\ttext for context lines
• Line numbers are 1-based.
• When context ranges are disjoint, a -- line separates groups.
• Exit codes:
  • 0 = at least one match
  • 1 = no matches
  • 2 = usage/config/error

Agent tip: use -n -H and no context for parse-friendly output, then key off exit codes.

Regex-style queries (best effort)

rlmgrep can interpret traditional regex-style patterns inside a natural-language prompt. The RLM may use Python (including re) in its internal REPL to approximate regex logic, but it is not guaranteed to behave exactly like grep/rg.

Example (best-effort regex semantics + extra context):

rlmgrep -n "Find Python functions that look like `def test_\\w+` and are marked as slow or flaky in nearby comments." .

If you need strict, deterministic regex behavior, use rg/grep.

Configuration

rlmgrep creates a default config automatically if missing. The config path is:

• ~/.rlmgrep/config.toml

Default config values (from rlmgrep/config.py):

model = "openai/gpt-5.2"
sub_model = "openai/gpt-5-mini"
api_base = "https://api.openai.com/v1"
model_type = "responses"
temperature = 1.0
max_tokens = 64000
max_iterations = 10
max_llm_calls = 20
file_warn_threshold = 200
file_hard_max = 1000
# markitdown_enable_images = false
# markitdown_image_llm_model = "gpt-5-mini"
# markitdown_image_llm_provider = "openai"
# markitdown_image_llm_api_key = ""
# markitdown_image_llm_api_base = ""
# markitdown_image_llm_prompt = ""
# markitdown_enable_audio = false
# markitdown_audio_model = "gpt-4o-mini-transcribe"
# markitdown_audio_provider = "openai"
# markitdown_audio_api_key = ""
# markitdown_audio_api_base = ""

CLI flags override config values. Model keys are resolved as:

1. CLI flags (--api-key, --sub-api-key)
2. Config values (api_key, sub_api_key)
3. Provider env vars inferred from the model name:
   • OPENAI_API_KEY
   • ANTHROPIC_API_KEY
   • GEMINI_API_KEY

If more than one provider key is set and the model does not make the provider obvious, rlmgrep emits a warning and requires an explicit --api-key.

Non-text files (PDF, images, audio)

• PDF files are parsed with pypdf. Each page gets a marker line ===== Page N =====, and output lines include a page=N suffix.
• Images and audio are converted via markitdown when enabled in config. For image/audio conversion, an openai Python client is required.
• Converted image/audio text is cached in sidecar files named <original>.<ext>.md next to the original file and reused on subsequent runs.
• Use -a/--text to force binary files to be read as text (UTF-8 with replacement).

Agent usage notes

• Prefer narrow corpora (globs/types) to reduce token usage.
• Use --max-llm-calls to cap costs; combine with small --max-iterations for safety.
• For reproducible parsing, use -n -H and avoid context (-C/-A/-B).

Development

• Install locally: pip install -e . or uv tool install .
• Run: rlmgrep "query" .
• No test suite is configured yet.

Security

Do not commit API keys. Use environment variables or ~/.rlmgrep/config.toml.