Reliary8

Grammar-free code intelligence + bash compression for AI coding agents.

A single Rust binary (~7 MB) that indexes any codebase via structural detection (no tree-sitter, no language-specific code) and exposes it to AI agents through the Model Context Protocol (MCP). Companion tool reliary wrap compresses verbose bash output (cargo test, git diff, pytest) before it reaches agent context — an open-source, grammar-free alternative to RTK.

Quick start

# Index your project
reliary trust .

# Wire into an AI agent (Claude Code, OpenCode, Pi, anything that speaks MCP)
reliary mcp

Agent integration

Add to your agent's MCP config:

Claude Code (~/.claude/mcp.json):

{ "mcpServers": { "reliary": { "command": "/path/to/reliary", "args": ["mcp"] } } }

Pi Agent: pi install --tool "reliary mcp"

OpenCode (~/.config/opencode/config.json): same format.

Bash compression (RTK parity)

For verbose shell output, prefix with reliary wrap:

reliary wrap cargo test    # collapses 12 Compiling lines → 1, keeps errors + summary
reliary wrap git diff      # drops context lines, keeps hunk headers + changes
reliary wrap pytest -v     # collapses 40 passed lines → [40 passed]

For automatic interception (no manual prefix), set RELIARY_SIFT_BASH=1 and install the appropriate hook from hooks/.

What it does

Code intelligence (MCP tools)

8 curated tools in the primary menu:

Bash compression (reliary wrap)

Universal text compressor that works on ANY command output. No per-command filters needed. 46.3% average compression across the 6 fixtures in the V14 benchmark (see ~/src/sift/scripts/bench_vs_rtk.py). Content readers on source files (cat/head/tail/less/bat <source.rs>) pass through uncompressed so model-built edits never see mangled code.

Benchmarks

Deterministic claim-verification bench (10 questions on a reliary corpus snapshot, deepseek-v4-flash, 4 seeds 42/17/123/456, result file bench/results/v70_3way.jsonl):

Every model claim (symbol at file:line) is verified mechanically against the index — no LLM judge. Wall is provider-latency bound (~90% cache hit on all three); the three conditions are within noise of each other. Repro: python3 bench/run_snapshot_bench.py --bin target/release/reliary --corpus /tmp/rel8-corpus --conds A,B,C --seeds 42 17 123 456 then python3 bench/deterministic_verify.py --input bench/results/v70_3way.jsonl --corpus /tmp/rel8-corpus.

Prompt-fairness disclosure: condition A receives the shipped routing prompt (~300 words); B/C receive ~100-word prompts. An ablation (M, minimal ~120-word prompt) scored F1 0.605 vs A's 0.795 — the tool contributes most of the gap, the routing prompt the remainder. See docs/plans/V70_TELEPATHY.md.

Full reproduction: python3 bench/long_session_bench.py --conditions A,C --seeds 42 17

MCP tool menu

The default menu exposes 8 curated tools (search, find_references, goto_def, call_graph, list_methods, find_dead_code, describe, similar). Specialist research variants (callgraph_v2, methods_on, find_references_type_flow, find_references_boltzmann, trace_path, query_ast, brace_graph, architecture, risk, fix, prior, compress, retrieve, stats) still exist as dispatch targets but are not listed.

CLI reference

reliary trust [PATH]          Index a project directory
reliary index [PATH]          Build/refresh the index
reliary search QUERY          BM25 search
reliary mcp                   Start MCP server on stdio
reliary wrap [CMD]            Run CMD and compress its output
reliary sift [--stdin]        Pipe text through compressor
reliary compress [PATH]       Compress a file or directory
reliary dead [PATH]           Find dead code (cross-file, carrion-style)
reliary risk FILE             Pre-edit risk analysis
reliary fix FILE [OLD] [NEW]  Apply pattern-based fix
reliary init                  Auto-install agent integrations
reliary uninstall             Remove agent integrations + daemon state
reliary doctor                Health check
reliary status                Show index + integration status
reliary update                Self-update from GitHub releases
reliary clean                 Clean caches and state
reliary logs                  Show recent log output
reliary config                Show resolved configuration
reliary completions SHELL     Emit shell completion script
reliary man                   Emit the man page
reliary full                  Full-menu MCP server (all specialist tools)

Run reliary --help for the complete, always-current command list.

Key properties

• Grammar-free: no tree-sitter, no AST, no per-language code. Structural detection on brace/indent/blank-line boundaries works on any text file including Markdown, TOML, configs.
• Index-first: once trusted, all queries use the SQLite index (.reliary/index.sqlite per project). ~10s for most repos, ~80s for Linux kernel.
• Deterministic: identical inputs produce identical outputs (verified: 9 determinism tests). Cache-safe for provider-side KV caching.
• Standalone binary: single Rust binary, no Python/Node runtime, no daemon process.

License

MIT