mcp-server-decoder

MCP server for Decoder, a static call graph analysis for Python codebases. Provides a pre-indexed topoloy for LLMs to use while searching codebases. Unlike grep, focused on text matches, decoder navigates call graphs and reduces token usage, while improving latency

With decoder:

with-decoder-mcp

Without decoder:

wo-decoder-mcp

Usage

MCP Server

cd your-project
pip install mcp-server-decoder
decoder index .
claude mcp add decoder -- mcp-server-decoder

Verify it's connected. In Claude, run:

/mcp
# then, "MCP Status"

You should see decoder listed with its available tools.

Tools Available

Tool	Parameters	Description
`decoder_callers`	`name`	Find what calls a function
`decoder_callees`	`name`	Find what a function calls
`decoder_trace`	`name`, `max_depth?`	Trace full call tree
`decoder_find`	`query`, `type?`	Search for symbols
`decoder_stats`	-	View index statistics

Metadata

Release files for mcp-server-decoder 0.1.0

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Source distribution (sdist)

Source distribution for mcp-server-decoder 0.1.0
File	Size	Uploaded	Provenance
mcp_server_decoder-0.1.0.tar.gz	311.2 kB	Jan 22, 2026	Without provenance	Details

Built distribution (wheel)

Table of built distributions (wheels) for mcp-server-decoder 0.1.0
File	Interpreter	ABI	Platform	Reset
mcp_server_decoder-0.1.0-py3-none-any.whl 2.0 kB Jan 22, 2026 Without provenance	Python 3	none	any	Details

Total release size: 313.3 kB

Release files / mcp_server_decoder-0.1.0.tar.gz

Download URL	mcp_server_decoder-0.1.0.tar.gz
Size	311.2 kB
Tags	Source
SHA-256 checksum How to use checksums	`aa7c5a8ebcd3aec569779a8b3dfa6fd771f6d115519be43522e7de6ab8e2bca1`
BLAKE2b-256 checksum How to use checksums	`028c22e0e1461fbf2eb3386b1971886c46401e7517a767a6b305408db75e2230`
Upload date	Jan 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.14.0`

Release files / mcp_server_decoder-0.1.0-py3-none-any.whl

Download URL	mcp_server_decoder-0.1.0-py3-none-any.whl
Size	2.0 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`78e4c54651fc03519c3a7a33cbc0ddf1ba3425f3aa705e3d99107716d574b089`
BLAKE2b-256 checksum How to use checksums	`b03c8ee93f3600b6e5fa0971507995daf5939e032fc128bcb84e80ab6fbcd19f`
Upload date	Jan 22, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.2.0 CPython/3.14.0`

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0.1.0 This release

Jan 22, 2026 2 release files No provenance

mcp-server-decoder 0.1.0