ccg

name	ccg
description	code-context-graph — build code knowledge graphs and search. Core entry point for parsing, building, and querying code graphs.

code-context-graph — Core Build & Search

Local code analysis tool that parses codebases via Tree-sitter into a knowledge graph with 12 language support and annotation-powered search.

Subcommands

Command	Description	Example
build [dir]	Parse directory, build graph + search index	ccg build .
build --exclude <pat>	Exclude files/paths (repeatable)	ccg build --exclude vendor
build --no-recursive [dir]	Only parse top-level directory	ccg build --no-recursive .
update [dir]	Incremental sync (changed files only)	ccg update .
status	Show graph statistics (nodes/edges/files)	ccg status
search <query>	FTS keyword search (includes @annotations)	ccg search "authentication"
search --path <prefix> <query>	Scoped search by path prefix	ccg search --path internal/auth "login"
languages	List supported languages and extensions	ccg languages
example [language]	Show annotation writing example	ccg example go
tags	Show all annotation tag reference	ccg tags
serve	Start MCP server (stdio by default)	ccg serve
serve --transport streamable-http	Start MCP server over HTTP	ccg serve --transport streamable-http
serve --http-addr :9090	Custom HTTP listen address	ccg serve --http-addr :9090
serve --stateless	Stateless session mode	ccg serve --stateless
serve --allow-repo <pat>	Allowed repos for webhook sync (repeatable)	ccg serve --allow-repo "org/*"
serve --webhook-secret <s>	HMAC secret for webhook verification	ccg serve --webhook-secret mysecret
serve --repo-root <dir>	Root dir for cloned repos	ccg serve --repo-root /data/repos

Execution

Parse the user's input after ccg and run via Bash:

ccg {subcommand} {args}

If the binary doesn't exist, build it first:

CGO_ENABLED=1 go build -tags "fts5" -o ccg ./cmd/ccg/

When no arguments provided

Show available commands:

Available ccg commands:
  ccg build [dir]           — Build code knowledge graph
  ccg update [dir]          — Incremental update
  ccg status                — Graph statistics
  ccg search <query>        — Full-text search (annotations included)
  ccg languages             — List supported languages
  ccg serve                 — Start MCP server

Related skills:
  /ccg-analyze              — Code analysis & architecture
  /ccg-annotate             — Annotation system & AI workflow
  /ccg-docs                 — Documentation & RAG indexing

MCP Tools (7)

Tool	Description
parse_project	Parse source files
build_or_update_graph	Full/incremental build with postprocessing
run_postprocess	Run flows/communities/search rebuild
get_node	Get node by qualified name
search	Full-text search
query_graph	Predefined graph queries (callers, callees, imports, etc.)
list_graph_stats	Node/edge/file counts

Smart Behaviors

Auto-rebuild when stale

If ccg.db doesn't exist or the user asks to analyze the project, run ccg build . first.

Annotation-aware search

When the user asks about business concepts, use FTS search which includes annotation content:

• @intent — function purpose/goal
• @domainRule — business rules
• @sideEffect — side effects
• @mutates — state changes
• @index — file/package level description

Example: user asks "결제 관련 코드" → ccg search "결제" finds functions annotated with payment-related @intent/@domainRule.

Graph Schema

Node kinds: function, class, type, test, file

Edge kinds: calls, imports_from, inherits, implements, contains, tested_by, depends_on, references

Supported Languages (12)

Go, Python, TypeScript, Java, Ruby, JavaScript, C, C++, Rust, Kotlin, PHP, Lua

HTTP Endpoints (Streamable HTTP mode)

Endpoint	Method	Description
/mcp	POST/GET/DELETE	MCP protocol endpoint (session-based)
/health	GET	Health check — returns {"status":"ok"}
/webhook	POST	GitHub / Gitea webhook receiver (when --allow-repo configured). Supports X-Hub-Signature-256 and X-Gitea-Signature HMAC verification.