Trazum

A deterministic cost analyser for prompts and usage logs. Offline, free, same answer every time. It reports sixteen findings priced in dollars per month: caching you are not getting, a model tier you may not need, a schema you pay to describe on every call. Shortening the prompt is one of them, and it is rarely the biggest.

Start here: one line, nothing installed

npx @trazum/cli bill ~/.claude/projects

Point it at a file or a folder of whatever usage you have — Claude Code transcripts, OpenTelemetry spans, a LiteLLM, Helicone or LangSmith export, an Anthropic, OpenAI or OpenRouter usage report, or a plain usage log — and it tells each file's shape from its own text, prices it, and prints the receipt. A file it cannot read is named, never guessed at; a model it cannot price is a named gap, never a zero. Nothing you point it at leaves your machine.

Your agents spend money in a loop. This prices the call before it happens.

One agent costs what it costs. A fleet of them spends in a loop nobody is watching per iteration, and the bill arrives a month later as one number with no per-decision detail inside it.

Trazum installs into that loop. The MCP server's first tool is spend_guard, and it is the only one here whose trigger is not a sentence somebody types:

"May I spend this?"  ->  yes, no, or cannot-tell.

A refusal carries the cheaper ways to make the same call, each priced for that call and each naming what it assumes. The ceilings come from your trazum.config.json; the spend so far comes from the usage log your host already writes. Nothing is called and nothing is spent to answer.

claude plugin marketplace add Davmunrey/Trazum
claude plugin install trazum@trazum

That one line brings the skill and the MCP server. Every other MCP client reads the same mcpServers JSON, so Cursor (.cursor/mcp.json), Windsurf, Claude Desktop and the rest are one paste:

{ "mcpServers": { "trazum": { "command": "npx", "args": ["-y", "@trazum/mcp"] } } }

The server is listed on the official MCP registry as io.github.Davmunrey/trazum, and every release updates the listing.

Or run it right now, without installing anything: the Playground

That link opens the CLI's pure subset running in the page, against sample files already loaded, through the same @trazum/core functions the terminal runs. Nothing you paste leaves your browser.

The argument, in one screenshot

Real output, transcribed. Read the last two lines: the rules recovered $24.00 a month, and the advisory above them is worth $528.40, 22 times more. That gap is the entire argument for this tool.