Hex Line

io.github.levnikolaevichPublished by GitHub account levnikolaevichv1.31.0Updated Oct 24, 2026

Hash-verified file editing MCP server with token efficiency hook for AI coding agents.

VerifiedSTDIODesktop onlyDeveloper Tools

Server details

Identifier: io.github.levnikolaevich/hex-line-mcp
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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The registry verified the GitHub account levnikolaevich for this listing. That does not show the account is the product's maker.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

A local MCP server for hash-verified file editing, aimed at AI coding agents that need token-efficient, verifiable changes.

What you can do: Hex Line is a local stdio MCP server described as a hash-verified file editing server with a token efficiency hook for AI coding agents. The registry description is the only capability statement available; the manifest lists no tools, so the exact operations it exposes are not documented in the supplied material. The README covers a separate family of Claude Code and Codex agent skills rather than this server's tools.
When to use it: Consider it when an assistant needs to edit files with verification that the content it changed is the content it read, and when token use during editing matters. Because no tool list is published, confirm the actual capabilities before relying on it for a workflow.
Requirements: Runs as a local process on the user's machine over stdio, installed from the npm package @levnikolaevich/hex-line-mcp. Desktop only; no web executable. No authentication, environment variables, or headers are declared.

Before you install

The server edits files, so changes it makes should be reviewed and kept under version control. No credentials, payments, or third-party data flows are declared, but the published tool list is empty, so verify what it can read or modify before installing.

Installation

In SourceWeft

Open Hex Line in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

Claude-Codex Skills

Open-source standalone agent skills, distributed as plugins for Claude Code and OpenAI Codex, help turn product ideas, code fixes, architecture reviews and deployments into scoped work with a verifiable result. Each workflow defines what to check, what it may change, and how to report evidence and remaining gaps.

Project page · Install · Full catalog

Choose a route

Choose by the result you need. Each skill works independently.

Your task	Plugin	Result
Is this idea worth building?	`product-discovery-suite`	Opportunity assessment, requirements, or interaction design.
How should this system change?	`architecture-suite`	System map, design decision, or migration plan.
Is this plan ready to implement?	`delivery-planning-suite`	Reviewed plan, ordered work, and test strategy.
Fix, upgrade, simplify, or speed up this code.	`implementation-suite`	Scoped change with behavior and benefit checks.
Set up lint, type or architecture checks that enforce project rules.	`implementation-suite`	Verified quality gates, with project compliance reported separately.
What could go wrong with this delivery or codebase?	`quality-assurance-suite`	Evidence-backed findings or scoped acceptance tests.
Get this change published or deployed.	`delivery-suite`	Authorized publication or deployment, verified at its destination.
Why did this fail, or did the feature help?	`operations-suite`	Incident diagnosis or product outcome assessment.
Can I trust the instructions in this skill?	`skill-maintenance-suite`	Skill boundaries, consistency, and distribution review.
Prepare Docker containers, configuration, access control or recovery.	`engineering-foundation-suite`	Native technical contracts and verified changes.

Install

For a feature or fix, start with implementation-suite. Replace it with another plugin from Choose a route for a different task.

Claude Code:

text

/plugin marketplace add levnikolaevich/claude-code-skills/plugin install implementation-suite@levnikolaevich-skills-marketplace/reload-plugins

/plugin marketplace add levnikolaevich/claude-code-skills/plugin install implementation-suite@levnikolaevich-skills-marketplace/reload-plugins

Codex:

text

codex plugin marketplace add levnikolaevich/claude-code-skillscodex plugin add implementation-suite@levnikolaevich-skills-marketplace

codex plugin marketplace add levnikolaevich/claude-code-skillscodex plugin add implementation-suite@levnikolaevich-skills-marketplace

Invoke a skill by its full name: /implementation-suite:ln-41-surgical-change-implementer in Claude Code or $ln-41-surgical-change-implementer in Codex, followed by your task. For example: “Fix the total calculation when an item has a discount. Preserve the current rounding rules.”

For personal defaults shared by Claude Code and Codex, use the optional user instructions template and connection guide. Personalize and merge it into your existing configuration; plugin installation does not change global instructions.

Lifecycle and plugins

Product Discovery Suite

Decide what is worth building, who it serves, and what a useful first version must do.

Index	Skill	Purpose
11	Opportunity Evaluator	Evaluates new product opportunities through demand, channels and economics before committing to build.
12	Product Requirements Builder	Defines product requirements, business rules and acceptance criteria for a committed intent; edits product docs only.
13	Interaction Design Builder	Designs user flows, interaction states and mockups for a defined product scope; does not implement UI code.

Architecture Suite

Understand the system you have and choose changes with clear boundaries, tradeoffs, and recovery paths.

Index	Skill	Purpose
21	System Design Baseline Builder	Defines measurable architecture drivers and constraints before system design; edits architecture docs only.
22	Current Architecture Documenter	Documents current architecture from implementation evidence; does not propose a target or audit fitness.
23	System Design Proposal Builder	Designs target system boundaries, contracts and tradeoffs from requirements; does not plan tasks or implement.
24	Architecture Decision Recorder	Records one architecture decision with alternatives, consequences and status; does not design the whole system.
25	Architecture Diagram Builder	Creates evidence-backed current or target architecture diagrams; not UI design.
26	Architecture Migration Planner	Plans architecture migrations with compatibility, data safety, rollout and recovery; does not execute them.

Delivery Planning Suite

Find missing decisions and risky dependencies before they become implementation rework.

Index	Skill	Purpose
31	Delivery Plan Builder	Builds dependency-ordered delivery plans from requirements and repository evidence; read-only.
32	Test Strategy Planner	Plans risk-based test portfolios and acceptance evidence; does not write or execute tests.
33	Plan Reviewer	Reviews a concrete implementation plan for missing decisions, feasibility and risk before execution; read-only.

Implementation Suite

Fix the cause, reuse what already works, and keep changes focused on a verified outcome.

Index	Skill	Purpose
41	Surgical Change Implementer	Implements one scoped product feature or fix using existing contracts; not upgrades, performance tuning or establishing cross-cutting technical foundations.
42	Dependency Upgrader	Upgrades dependencies in reversible batches with version-specific compatibility and regression checks.
43	Code Modernizer	Modernizes a bounded capability to reduce demonstrated maintenance cost; not routine upgrades or performance tuning.
44	Performance Optimizer	Profiles and improves a measured performance bottleneck; retains only verified improvements.
45	Benchmark Comparator	Compares tools or implementations through controlled benchmarks and independent correctness checks.
46	Quality Gate Engineer	Configures and verifies lint, type, architecture and other engineering checks; not product cleanup, policy invention or deployment redesign.

Quality Assurance Suite

Find gaps that could break a release, mislead a maintainer, or make a passing test meaningless.

Index	Skill	Purpose
51	Acceptance Test Builder	Builds, updates or retires scoped acceptance tests and verifies execution; does not repair product code.
52	Delivery Reviewer	Reviews a completed change for acceptance, regressions and release risk; read-only, not a whole-codebase audit.
53	Documentation Auditor	Audits documentation and comments for trust, coverage, consistency and freshness; read-only.
54	Codebase Auditor	Audits cross-cutting codebase health, security and maintainability; not a single-change review or specialist audit.
55	Test Suite Auditor	Audits existing tests for risk coverage, reliable oracles and maintenance value; does not edit tests.
56	Architecture Auditor	Audits implemented architecture boundaries, dependencies and ownership; not target design or plan review.
57	Persistence Auditor	Audits queries, transactions, consistency and persistence resource lifetimes; read-only.

Delivery Suite

Publish the intended changes and verify what reached the remote repository or target environment.

Index	Skill	Purpose
61	Repository Publisher	Commits, pushes and remotely verifies authorized repository changes; does not create releases.
62	Release Publisher	Prepares and publishes an explicitly requested tagged GitHub release; does not deploy applications.
63	Deployment Engineer	Prepares delivery pipelines and remote infrastructure, then executes authorized rollouts; not standalone quality-gate setup or local container packaging.
64	Community Announcer	Drafts or publishes authorized, fact-checked GitHub Discussions announcements; does not create releases.

Operations Suite

Turn incidents and product signals into evidence for the next recovery or product decision.

Index	Skill	Purpose
71	Operations Investigator	Diagnoses incidents from operational evidence and proposes recovery; does not change live systems.
72	Product Outcome Evaluator	Evaluates observed product outcomes against a prior hypothesis; does not run experiments or change user treatment.

Skill Maintenance Suite

Make skills easier to invoke correctly, follow consistently, and verify before distribution.

Engineering Foundation Suite

Establish and verify project technical foundations using native stack mechanisms, explicit contracts and safe recovery.

Index	Skill	Purpose
91	Engineering Baseline Builder	Creates project technical rules and recurring local procedures from the actual stack; edits guidance only, not architecture targets or application code.
92	Container Engineer	Builds, hardens or reviews container images and local runtime packaging with startup and shutdown evidence; not remote deployment or host administration.
93	Configuration Engineer	Establishes configuration ownership, validation, secret boundaries and environment isolation; not credential identity policy or live deployment.
94	Authentication Engineer	Implements or repairs identity verification and session or credential lifecycle; not operation permissions, resource access policy or a new identity provider by default.
95	Resource Authorization Engineer	Implements permissions and tenant or owner scoped resource access while preserving approved grants; not authentication or role redesign.
96	Error Handling Engineer	Implements safe error boundaries, cancellation and user recovery contracts; not telemetry pipelines or durable retry machinery.
97	Observability Engineer	Implements structured diagnostics, correlation and justified metrics or traces; not incident investigation or a mandatory telemetry platform.
98	Mutation Reliability Engineer	Implements transactions, idempotency and interrupted-operation recovery; not schema migration or a mandatory background-job platform.
99	Database Lifecycle Engineer	Prepares and verifies schema migrations, database roles and isolated recovery or test resources; not query tuning or runtime mutation orchestration.

Update an installed plugin

For a Git-backed marketplace, refresh the catalog, then update your plugin:

text

claude plugin marketplace update levnikolaevich-skills-marketplaceclaude plugin update implementation-suite@levnikolaevich-skills-marketplace
codex plugin marketplace upgrade levnikolaevich-skills-marketplacecodex plugin add implementation-suite@levnikolaevich-skills-marketplace

claude plugin marketplace update levnikolaevich-skills-marketplaceclaude plugin update implementation-suite@levnikolaevich-skills-marketplace
codex plugin marketplace upgrade levnikolaevich-skills-marketplacecodex plugin add implementation-suite@levnikolaevich-skills-marketplace

For a local-directory marketplace, update its checkout first, then refresh the installed plugin; Codex marketplace upgrade supports Git sources only. Follow Claude's reload/restart instruction and start a new Codex session. Source edits alone do not refresh the installed cache or an existing session.

License

MIT

Source: README.md at commit e688949

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v1.31.0LatestSep 16, 2026

Score

50% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.
Auth declared10 pts
Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.
Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts