Lossless Context MCP

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/northtekdevs-lossless-context-mcp

About

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Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

6 read · 3 write · 0 delete · 2 not yet classified

Secrets

None asked for

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Runs as

Node.js package

Tools (11)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• context_blame

  Forensics: what did the agent see of this file, and when? Every content version the flight recorder observed (SHA-256 + git blob SHA-1, first/last seen, capture source, sessions), plus what else was in context around a focus moment. The evidence-backed answer to "why did the agent do that?" — query history instead of trusting self-report.

• context_receipt

  Issue an HMAC-SHA256-signed context receipt: every file/view the model was shown via this ledger, the SHA-256 of each content version, git binding (blob SHA-1 per version, repo HEAD at issue time), delivery kinds, token totals, and an explicit coverage statement. With include_sweep, also attests native-tool reads captured by the transcript-sweep hooks. The auditable answer to "what did the AI see when it did this?". Signs with LOSSLESS_RECEIPT_KEY or the shared trust key file, so it verifies with the same key as trust-mcp receipts. Verify later with verify_context_receipt.

• context_stats

  Where did this session’s file-read tokens go? Totals, per-repo breakdown, heaviest files, dedup savings, and a USD estimate (LOSSLESS_PRICE_PER_MTOK, default $3/MTok input). Counted with a real tokenizer on exactly what this server sent.

• coordination_status

  The air-traffic radar for concurrent agents on this machine: which agent processes are active (from the coordination plane the guard hooks maintain), what they have been editing, which files have cross-session activity, and where edit conflicts are brewing. Advisory visibility only — sessions without the hooks installed are invisible.

• export_pack

  Build a fan-out context pack: the stable, hot files (ranked across sessions from the flight-recorder history) rendered as one deterministic block to embed VERBATIM in a custom agent-type's SYSTEM PROMPT. Siblings in a fan-out then hit the prompt cache on that shared prefix instead of each re-reading the same files (measured on a real review fan-out: 46.55% cheaper; per-task injection measured WORSE — see README). Files matching secret patterns are never packed.

• outline

  Return a cheap structural outline of a file: declaration lines (functions, classes, types, methods) with line numbers, bodies elided. Use this to navigate a large/unknown file before reading specific parts with read_file.

• read_file

  Read a text file through the context ledger. The FIRST read of a file/view (or the first after a context compaction) returns full content. A later read of an UNCHANGED view returns a short "reuse what you have" marker. A later read of a CHANGED view returns a unified DIFF to apply to the copy you already have. Optionally read just one symbol (function/class by name) or a line range instead of the whole file. All dedup is lossless: it only diffs/withholds content it can prove you still have. Every read is metered (see context_stats) and attested in the signed context receipt. Pass force_full:tr…

• read_files

  Read a working set of text files in one call, each through the same lossless ledger as read_file (full on first contact, unchanged-marker or diff on re-reads). One call for N files instead of N calls. Per-file errors are reported inline without failing the batch.

• restore_context

  Re-emit the working set after a compaction (or /clear) destroyed it. Serves CURRENT disk content of the requested files — by default the top of the pre-compaction manifest the sweep hook wrote — through the lossless ledger, annotating any file that changed since the model last saw it. Budget-capped so a restore cannot blow the fresh context; files over budget are listed, not silently dropped.

• verify_context_receipt

  Verify a context receipt + signature pair against the local receipt key (timing-safe, canonicalized so JSON field order does not matter).

• working_set

  What has this session been working on? A heat-ranked table of the files the flight recorder knows about — from this server's own reads plus any transcript sweeps the hooks performed (last 24h) — with sizes, touch counts, and staleness vs current disk state. Use after a compaction to see what is recoverable, or anytime for orientation.

Signals

Stars

4

Forks

2

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Last commit

Sep 5, 2026 (1 month ago)

Last release

Aug 12, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.NORTHTEKDevs/lossless-context-mcp

Version

2.0.0

Auth

No auth

Packages

npm lossless-context-mcp

License

MIT

Repository

github.com/NORTHTEKDevs/lossless-context-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql