Metadata-Version: 2.5
Name: hybrid-coco
Version: 0.2.0
Summary: Self-contained local code intelligence: SQLite index, hc CLI, and hc_* MCP tools
License:                                  Apache License
                                   Version 2.0, January 2004
                                http://www.apache.org/licenses/
        
           TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
        
           1. Definitions.
        
              "License" shall mean the terms and conditions for use, reproduction,
              and distribution as defined by Sections 1 through 9 of this document.
        
              "Licensor" shall mean the copyright owner or entity authorized by
              the copyright owner that is granting the License.
        
              "Legal Entity" shall mean the union of the acting entity and all
              other entities that control, are controlled by, or are under common
              control with that entity. For the purposes of this definition,
              "control" means (i) the power, direct or indirect, to cause the
              direction or management of such entity, whether by contract or
              otherwise, or (ii) ownership of fifty percent (50%) or more of the
              outstanding shares, or (iii) beneficial ownership of such entity.
        
              "You" (or "Your") shall mean an individual or Legal Entity
              exercising permissions granted by this License.
        
              "Source" form shall mean the preferred form for making modifications,
              including but not limited to software source code, documentation
              source, and configuration files.
        
              "Object" form shall mean any form resulting from mechanical
              transformation or translation of a Source form, including but
              not limited to compiled object code, generated documentation,
              and conversions to other media types.
        
              "Work" shall mean the work of authorship made available under
              the License, as indicated by a copyright notice that is included in
              or attached to the work (an example is provided in the Appendix below).
        
              "Derivative Works" shall mean any work, whether in Source or Object
              form, that is based on (or derived from) the Work and for which the
              editorial revisions, annotations, elaborations, or other modifications
              represent, as a whole, an original work of authorship. For the purposes
              of this License, Derivative Works shall not include works that remain
              separable from, or merely link (or bind by name) to the interfaces of,
              the Work and Derivative Works thereof.
        
              "Contribution" shall mean, as submitted to the Licensor for inclusion
              in the Work by the copyright owner or by an individual or Legal Entity
              authorized to submit on behalf of the copyright owner. For the purposes
              of this definition, "submitted" means any form of electronic, verbal,
              or written communication sent to the Licensor or its representatives,
              including but not limited to communication on electronic mailing lists,
              source code control systems, and issue tracking systems that are managed
              by, or on behalf of, the Licensor for the purpose of discussing and
              improving the Work, but excluding communication that is conspicuously
              marked or designated in writing by the copyright owner as
              "Not a Contribution."
        
              "Contributor" shall mean Licensor and any Legal Entity on behalf of
              whom a Contribution has been received by the Licensor and subsequently
              incorporated within the Work.
        
           2. Grant of Copyright License. Subject to the terms and conditions of
              this License, each Contributor hereby grants to You a perpetual,
              worldwide, non-exclusive, no-charge, royalty-free, irrevocable
              copyright license to reproduce, prepare Derivative Works of,
              publicly display, publicly perform, sublicense, and distribute the
              Work and such Derivative Works in Source or Object form.
        
           3. Grant of Patent License. Subject to the terms and conditions of
              this License, each Contributor hereby grants to You a perpetual,
              worldwide, non-exclusive, no-charge, royalty-free, irrevocable
              (except as stated in this section) patent license to make, have made,
              use, offer to sell, sell, import, and otherwise transfer the Work,
              where such license applies only to those patent claims licensable
              by such Contributor that are necessarily infringed by their
              Contribution(s) alone or by the combination of their Contributions
              with the Work to which such Contributions were submitted. If You
              institute patent litigation against any entity (including a
              cross-claim or counterclaim in a lawsuit) alleging that the Work
              or a Contribution incorporated within the Work constitutes direct
              or contributory patent infringement, then any patent licenses
              granted to You under this License for that Work shall terminate
              as of the date such litigation is filed.
        
           4. Redistribution. You may reproduce and distribute copies of the
              Work or Derivative Works thereof in any medium, with or without
              modifications, and in Source or Object form, provided that You
              meet the following conditions:
        
              (a) You must give any other recipients of the Work or Derivative
                  Works a copy of this License; and
        
              (b) You must cause any modified files to carry prominent notices
                  stating that You changed the files; and
        
              (c) You must retain, in the Source form of any Derivative Works
                  that You distribute, all copyright, patent, trademark, and
                  attribution notices from the Source form of the Work,
                  excluding those notices that do not pertain to any part of
                  the Derivative Works; and
        
              (d) If the Work includes a "NOTICE" text file as part of its
                  distribution, You must include a readable copy of the
                  attribution notices contained within such NOTICE file, in
                  at least one of the following places: within a NOTICE text
                  file distributed as part of the Derivative Works; within
                  the Source form or documentation, if provided along with the
                  Derivative Works; or, within a display generated by the
                  Derivative Works, if and wherever such third-party notices
                  normally appear. The contents of the NOTICE file are for
                  informational purposes only and do not modify the License.
                  You may add Your own attribution notices within Derivative
                  Works that You distribute, alongside or as an addendum to
                  the NOTICE text from the Work, provided that such additional
                  attribution notices cannot be construed as modifying the License.
        
           5. Submission of Contributions. Unless You explicitly state otherwise,
              any Contribution intentionally submitted for inclusion in the Work
              by You to the Licensor shall be under the terms and conditions of
              this License, without any additional terms or conditions.
        
           6. Trademarks. This License does not grant permission to use the trade
              names, trademarks, service marks, or product names of the Licensor,
              except as required for reasonable and customary use in describing the
              origin of the Work and reproducing the content of the NOTICE file.
        
           7. Disclaimer of Warranty. Unless required by applicable law or
              agreed to in writing, Licensor provides the Work (and each
              Contributor provides its Contributions) on an "AS IS" BASIS,
              WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
              implied, including, without limitation, any warranties or conditions
              of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
              PARTICULAR PURPOSE. You are solely responsible for determining the
              appropriateness of using or reproducing the Work and assume any
              risks associated with Your exercise of permissions under this License.
        
           8. Limitation of Liability. In no event and under no legal theory,
              whether in tort (including negligence), contract, or otherwise,
              unless required by applicable law (such as deliberate and grossly
              negligent acts) or agreed to in writing, shall any Contributor be
              liable to You for damages, including any direct, indirect, special,
              incidental, or exemplary damages of any character arising as a
              result of this License or out of the use or inability to use the
              Work (including but not limited to damages for loss of goodwill,
              work stoppage, computer failure or malfunction, or all other
              commercial damages or losses), even if such Contributor has been
              advised of the possibility of such damages.
        
           9. Accepting Warranty or Liability. While redistributing the Work or
              Derivative Works thereof, You may offer, and charge a fee for,
              acceptance of support, warranty, indemnity, or other liability
              obligations and/or rights consistent with this License. However,
              in accepting such obligations, You may act only on Your own behalf
              and on Your sole responsibility, not on behalf of any other
              Contributor, and only if You agree to indemnify, defend, and hold
              each Contributor harmless for any liability incurred by, or claims
              asserted against, such Contributor by reason of your accepting any
              such warranty or additional liability.
        
           END OF TERMS AND CONDITIONS
        
           Copyright 2026 Javier Meira Corbal
        
           Licensed under the Apache License, Version 2.0 (the "License");
           you may not use this file except in compliance with the License.
           You may obtain a copy of the License at
        
               http://www.apache.org/licenses/LICENSE-2.0
        
           Unless required by applicable law or agreed to in writing, software
           distributed under the License is distributed on an "AS IS" BASIS,
           WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
           See the License for the specific language governing permissions and
           limitations under the License.
License-File: LICENSE
Requires-Python: >=3.11
Requires-Dist: click>=8.0
Requires-Dist: mcp<3,>=2.0.0
Requires-Dist: pathspec>=0.12.0
Requires-Dist: tree-sitter-c-sharp>=0.23.0
Requires-Dist: tree-sitter-c>=0.23.0
Requires-Dist: tree-sitter-cpp>=0.23.0
Requires-Dist: tree-sitter-go>=0.23.0
Requires-Dist: tree-sitter-java>=0.23.0
Requires-Dist: tree-sitter-javascript>=0.23.0
Requires-Dist: tree-sitter-kotlin>=1.0.0
Requires-Dist: tree-sitter-python>=0.23.0
Requires-Dist: tree-sitter-rust>=0.21.0
Requires-Dist: tree-sitter-swift>=0.7.0
Requires-Dist: tree-sitter-typescript>=0.23.0
Requires-Dist: tree-sitter>=0.23.0
Provides-Extra: dev
Requires-Dist: pytest>=8.0; extra == 'dev'
Description-Content-Type: text/markdown

# hybrid-coco

[![CI](https://github.com/jmeiracorbal/hybrid-coco/actions/workflows/ci.yml/badge.svg)](https://github.com/jmeiracorbal/hybrid-coco/actions/workflows/ci.yml)
[![PyPI version](https://img.shields.io/pypi/v/hybrid-coco.svg)](https://pypi.org/project/hybrid-coco/)
[![PyPI downloads](https://img.shields.io/pypi/dm/hybrid-coco.svg)](https://pypi.org/project/hybrid-coco/)
[![Python](https://img.shields.io/pypi/pyversions/hybrid-coco.svg)](https://pypi.org/project/hybrid-coco/)
[![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
[![GitHub issues](https://img.shields.io/github/issues/jmeiracorbal/hybrid-coco.svg)](https://github.com/jmeiracorbal/hybrid-coco/issues)

Local, self-contained code intelligence for AI agents. Index your codebase once, query it deterministically with the `hc` CLI and `hc_*` MCP tools — one install, no external services.

hybrid-coco ships everything in one component: SQLite storage, tree-sitter parsers, CLI, MCP server, host-native hooks, awareness, and agent skills. No embeddings, no vector database, no Docker, no companion tools.

```
pip install hybrid-coco && hc init
```

### The problem it solves

When Claude reads a file to find one function, it pays for the entire file:

```
# Without hybrid-coco
Read("src/gitlab_helpers.py")             >  12,140 tokens  (whole file)

# With hybrid-coco
hc_file_context("src/gitlab_helpers.py")  >  297 tokens  (symbols only)  < 97.6% savings
```

The hook intercepts native file-read / search tools (`Read`/`Grep`, or the host's equivalent) and suggests the equivalent `hc_*` tool. Same answer, fraction of the tokens.

## How it works

```
Source files  ──tree-sitter──►  SQLite + FTS5  ──►  CLI (hc)
                                     │
                                     └──────────────►  MCP server (hc_*)
                                                           │
                                                    host-native hooks
                                                    intercept Read/Grep
                                                    (or host equivalent)
                                                    > suggest hc_* tools
```

1. **`hc index .`**: parses every source file with tree-sitter, extracts symbols (functions, classes, methods, imports) with their signatures, docstrings, and line numbers into a FTS5 trigram index
2. **`hc query / symbol / file-context / snippet`**: queries the index and returns structure or bounded source slices — not whole files
3. **`hc serve`**: exposes the same queries as MCP tools (`hc_search`, `hc_symbol`, `hc_file_context`, `hc_snippet`, `hc_structure`, `hc_status`)
4. **Hooks**: `hc init` registers host-native hooks that suggest `hc_*` tools whenever the agent is about to read or search an indexed file (`hc init --host cursor|codex|opencode|devin`, or `--host all`)

## Benchmark

Measured on a real Rust codebase: 76 files, 2,242 symbols:

| Query | Baseline (full read / shell search) | hybrid-coco | Savings |
|---|---|---|---|
| Symbol lookup (`TimedExecution`) | 2,227 tok | 51 tok | **97.7%** |
| Pattern search (`savings`) | 3,164 tok | 334 tok | **89.4%** |
| File structure (`tracking.rs`) | 12,140 tok | 1,245 tok | **89.7%** |
| Schema grep (`CREATE TABLE`) | 92 tok | 29 tok | 68.5% |
| File read (`git.rs`) | 16,343 tok | 377 tok | **97.7%** |
| **Total (5 queries)** | **33,966 tok** | **2,036 tok** | **~94%** |

Baseline = recursive search plus reading whole files. hybrid-coco = `hc symbol` + `hc query` + `hc file-context`.

## Quickstart

### 1. Install

**Option A: One-line installer (recommended)**

```bash
curl -fsSL https://raw.githubusercontent.com/jmeiracorbal/hybrid-coco/main/install.sh | bash
```

Installs the `hc` package (uv, pipx, or pip), Claude Code hooks, and the short global instruction gate (`hc install-instructions --host claude`). It does **not** run `hc init`. Other hosts: `hc install-instructions --host cursor|codex|opencode|devin` or `--host all`. Requires Python 3.11+.

**Option B: Claude Code plugin**

```bash
claude plugin marketplace add jmeiracorbal/hybrid-coco
claude plugin install hybrid-coco@hybrid-coco
```

Registers the MCP server and hooks automatically. Requires `hc` in PATH — install the package first:

```bash
pip install hybrid-coco   # or: uv tool install hybrid-coco
```

### 2. Index your project and register with an agent host

```bash
cd your-project/
hc init                 # Claude Code (default)
hc init --host cursor
hc init --host codex
hc init --host opencode
hc init --host devin
hc init --host all      # every supported host
```

`hc init` does five things:
- Indexes the current directory (tree-sitter, SHA-256 incremental)
- Registers the MCP server in the host **project** config
- Installs host-native hooks that intercept `Read` and `Grep` (or the host's equivalent)
- Installs host-adapted agent skills (`hybrid-coco`, `hc-init`, `hc-search`) — same names, host-specific MCP paths, native tools, and hook events
- Activates the project the same way mnemo does: writes `.hybrid-coco/project.json` (`version`, deterministic `id`, `agents`) and copies the full protocol to `.hybrid-coco/hybrid-coco.md`. It does **not** append to project `AGENTS.md` / `CLAUDE.md`, and it does **not** write user-global instruction files. The short conditional protocol is installed once by `install.sh` / `hc install-instructions`.

Restart the agent host to activate.

### 3. Use from the agent

The MCP tools are now available in every conversation:

```
hc_search("savings_pct")       # FTS5 search over names, signatures, docstrings
hc_symbol("TimedExecution")    # exact/prefix symbol lookup → line range
hc_structure("function", lang=["rust"])  # tree-sitter shape search
hc_snippet("src/git.rs", 45, 67)  # bounded source slice from disk
hc_file_context("src/git.rs")  # all symbols in a file, structured
hc_status()                    # index stats
```

Invocable skills: `/hc-init` (setup/repair without full-reindex storms), `/hc-search` (choose the right `hc_*` query). The main `hybrid-coco` skill covers when to prefer `hc_*` over the host's native read/search tools.

The hooks will remind the agent (via the host's hook protocol) whenever it is about to read an indexed file directly.

## Agent hosts

| Host | `hc init` | MCP | Skills | Hooks |
|---|---|---|---|---|
| Claude Code | default | `.claude/settings.json` | `~/.claude/skills/` | PreToolUse `Read\|Grep`, PostToolUse `Write\|Edit` |
| Cursor | `--host cursor` | `.cursor/mcp.json` | `.cursor/skills/` + `~/.cursor/skills/` | `preToolUse` `Read\|Grep`, `beforeReadFile`, `postToolUse` `Write\|StrReplace`, `afterFileEdit`, `sessionStart` |
| Codex | `--host codex` | `.codex/config.toml` | `.agents/skills/` + `~/.agents/skills/` | `PreToolUse` Bash (`cat`/`head`/`rg`/`grep`), `PostToolUse` `apply_patch`, `SessionStart` |
| OpenCode | `--host opencode` | `opencode.json` | `.opencode/skills/` + `~/.config/opencode/skills/` | plugin `tool.execute.before/after` (`read`/`grep` via `filePath`) |
| Devin | `--host devin` | `.devin/mcp_config.json` | `.devin/skills/` + `~/.config/devin/skills/` | `.devin/hooks.v1.json` (`read`/`grep`, Claude-compatible `decision: block`) |

Skills keep the same names on every host (`hybrid-coco`, `hc-init`, `hc-search`) so `/hc-init` and `/hc-search` still work. The `SKILL.md` body is host-adapted: MCP path, native tools to avoid, and only the hook events that host actually fires. Hooks never invent events a host does not support.

Instruction files follow the same split as mnemo: install globally, activate per project.

```
# global (once — install.sh / hc install-instructions)
~/.claude/CLAUDE.md                         ← short <!-- hybrid-coco:start --> gate
~/.cursor/rules/hybrid-coco.mdc             ← alwaysApply: true, same gate
~/.codex/AGENTS.md
~/.config/opencode/AGENTS.md
~/.config/devin/AGENTS.md

# project (`hc init`)
project/
├── .hybrid-coco/hybrid-coco.md   ← full protocol (gitignored with the index)
└── .hybrid-coco/project.json     ← {version, id, agents} — like mnemo's `.mnemo`
```

The global text is conditional: if `.hybrid-coco/project.json` is missing, skip hybrid-coco entirely. If the file exists but `id` is missing, empty, not a UUID, or not the uuid5 derived from the absolute project path, the runtime rewrites `id` in place — it does not invent `version` or `agents`, and it does not create a marker from scratch. Hooks use the same gate. `hc init` does not write project `AGENTS.md`, `CLAUDE.md`, or `.cursor/rules/hybrid-coco.mdc`, and does not touch the global instruction files. Re-running `hc install-instructions` refreshes the managed block without duplicating it.

## CLI reference

```
hc index [PATH] [--exclude PATTERN]...
                         Index PATH (default: cwd); optional exclude patterns
hc update [PATH] [--exclude PATTERN]...
                         Re-index only changed files (SHA-256 diff)
hc status [PATH]         Index stats: files, symbols by kind, last update
hc query <TEXT> [--path P] [--lang L]... [--offset N] [--limit N]
                         FTS5 search; optional path/lang filters and pagination
hc symbol <NAME> [--path P] [--lang L]... [--offset N] [--limit N]
                         Exact name lookup, then prefix; same filters as query
hc file-context <PATH>   All symbols in PATH grouped by kind (~97% savings vs cat)
hc snippet <PATH> <START> <END>
                         Read PATH lines START..END from disk (1-based, inclusive)
hc structure <KIND> [--path P] [--lang L]...
                         Structural search: function | method | class | import
hc doctor [PATH]         Diagnostics: index, schema, languages, MCP/hooks, versions
hc reset [PATH] [-f] [--all]
                         Delete index DB; --all also drops project MCP entries
hc serve                 Start MCP server (stdio)
hc hook <HOST> <EVENT>   Host lifecycle hook (JSON stdin/stdout)
hc install-instructions [--host NAME]...
                         Short conditional protocol in user-global instruction files
                         --host: claude (default), cursor, codex, opencode, devin, all
hc init [PATH] [--host NAME]...
                         Index + marker + .gitignore + register MCP/hooks/skills
                         --host: claude (default), cursor, codex, opencode, devin, all
hc sync-skills [--check] Maintainer: sync Claude skill mirrors from assets/skills/
                         to skills/ and plugin/skills/ (--check verifies CI parity)
```

`--exclude` accepts gitignore-style patterns and may be repeated. They are combined with `exclude` in `.hybrid-coco/config.toml`. If that file is missing, `hc init`, `hc index`, `hc update`, and `hc doctor` write the default and continue.

## Project settings

If `.hybrid-coco/config.toml` is missing, hybrid-coco creates it with empty lists and keeps going. Edit the file afterwards to restrict paths or override languages. An existing invalid file is not overwritten — that fails until you fix it.

```toml
include = []
exclude = []
languages = {}
```

Example with restrictions:

```toml
include = ["src/**"]
exclude = ["**/generated/**"]

[languages]
".pyx" = "python"
".h" = "cpp"
```

- `include`: gitignore-style patterns. Empty list = no include restriction. Non-empty = only matching paths are indexed.
- `exclude`: gitignore-style patterns, merged with `hc index --exclude`.
- `languages`: extension → parser language (`python`, `rust`, `cpp`, …). Overrides the built-in extension map.

`hc reset` deletes the index database and leaves `config.toml` in place. `hc doctor` writes the default file if it is missing, and fails if the existing file is invalid.

## Supported languages

| Language | Parser |
|---|---|
| Python | tree-sitter-python |
| Rust | tree-sitter-rust |
| JavaScript | tree-sitter-javascript |
| TypeScript | tree-sitter-typescript |
| Go | tree-sitter-go |
| Java | tree-sitter-java |
| C | tree-sitter-c |
| C++ | tree-sitter-cpp |
| C# | tree-sitter-c-sharp |
| Kotlin | tree-sitter-kotlin |
| Swift | tree-sitter-swift |

Adding a language: one `LanguageSpec` in `src/hybrid_coco/languages/registry.py`, a parser module under `src/hybrid_coco/parsers/`, and tests in `tests/test_languages.py`.

## Design decisions

**SQLite + FTS5, not a vector database**: deterministic results, zero infrastructure, single file. Trigram search covers partial matches and is fast enough for codebases up to ~100K files. Semantic (embedding) search can be layered on top via `sqlite-vec` without changing the schema.

**tree-sitter, not regex**: symbol extraction is grammar-aware. Signatures and docstrings are extracted structurally, not by pattern matching.

**No server process**: `hc serve` runs as a stdio MCP server launched on demand by the agent host. There is no daemon to manage.

**Incremental by default**: `hc update` re-indexes only files whose SHA-256 has changed. Full re-index is only needed on first run or after `.gitignore` changes.

## Boundaries

hybrid-coco is a single local component:

- SQLite storage in the project workspace
- tree-sitter parsers for symbol extraction
- CLI (`hc`) for indexing and querying
- MCP server (`hc_*`) for Claude Code, Cursor, Codex, OpenCode, Devin, and other MCP hosts
- hooks, awareness, and skills shipped with the package (`hc init --host`)

It does not require companion services, external proxies, background daemons, or additional infrastructure.

## Development

```bash
git clone https://github.com/jmeiracorbal/hybrid-coco
cd hybrid-coco
uv sync --extra dev
uv pip install -e .
hc --version
```

Run tests:

```bash
uv run pytest
```

### Layout (maintainers)

| Layer | Modules |
|---|---|
| Application | `query.py`, `formatters.py` |
| Indexing | `indexer.py`, `parsers/`, `languages/registry.py` |
| Storage | `store.py`, `structure.py` |
| Host integration | `hosts/` (`base.py`, `hooks_patch.py`, per-host installers) |
| Packaged assets | `assets/` (skills, hooks, awareness) |

After editing Claude skills in `src/hybrid_coco/assets/skills/`:

```bash
hc sync-skills          # refresh skills/ and plugin/skills/
hc sync-skills --check  # verify mirrors (same check as CI)
```

Host-adapted skills under `assets/hosts/<host>/skills/` are installed by `hc init` only — no repo mirror.

Run the benchmark against any indexed project:

```bash
cd path/to/project && hc index .
python scripts/benchmark.py path/to/project
```
