Jev Filter

Name: Jev Filter
Author: apixly-ai

by apixly-aiversion 0.4.2i★ –iRuns on your computer

Registry nameio.github.apixly-ai/jev-filter

Install

Overview

Description from the maker (original English)

Read-only semantic filtering, code search, log triage and traceable evidence for AI agents.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Search & AI memory
You need to fill in: TYPESAFE_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: TYPESAFE_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "jev-filter": {
      "command": "npx",
      "args": [
        "-y",
        "@apixly/jev-filter",
        "mcp",
        "--root",
        "{workspace}"
      ],
      "env": {
        "TYPESAFE_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add jev-filter --env TYPESAFE_API_KEY=your-value -- npx -y @apixly/jev-filter mcp --root '{workspace}'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "jev-filter": {
      "command": "npx",
      "args": [
        "-y",
        "@apixly/jev-filter",
        "mcp",
        "--root",
        "{workspace}"
      ],
      "env": {
        "TYPESAFE_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "jev-filter": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@apixly/jev-filter",
        "mcp",
        "--root",
        "{workspace}"
      ],
      "env": {
        "TYPESAFE_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

TYPESAFE_API_KEY secret required env
Your TypeSafe Jev API key. Inference calls are billable; do not publish the key.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account apixly-ai, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Search & AI memoryi

More stars than 0% of the other 7275 servers in this category
Published to the registry more recently than 72% of the other 7275 servers in this category
Basic checks equal to or better than 100% of the other 7275 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Jev Filter safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: TYPESAFE_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.4.2) reached the registry 15 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Codebase Memory

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Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 21 days ago

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Exa

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Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

简体中文 · Quick start · Documentation · Agent setup · Benchmarks

Jev Filter

Semantic filtering for AI agent tool results. Turn large tool outputs into compact, typed decisions before they enter your agent's context. Keep source records inside your program, return relevant evidence and unresolved IDs, and recover originals by ID.

Filter with context. Screen search results, complete code symbols and correlated logs against your task and supplied facts.
Keep decisions traceable. Return typed answers, source IDs and review items; preserve missing facts and partial failures.
Verify actions in your program. For short browser and desktop goals, Jev selects observed controls; the program owns execution, safety gates and final-state checks.

An independent MIT project maintained by Apixly. Official npm package: `@apixly/jev-filter`. What it does and when to use it.

Discover and connect: View the MCP Servers listing ↗ · Set up a client and four read-only tools →

Quick start

Node.js 22+ · macOS / Linux · Python included in the npm distribution. Windows: use WSL or install Python natively. Installation and doctor are offline; inference needs a TypeSafe Jev API key.

npm install -g @apixly/jev-filter

jev-filter doctor

Run this from any directory:

export TYPESAFE_API_KEY='your-key'

jev-filter query --input - --mode choose \ --task 'Choose the CURRENT unresolved DNS failure' <<'JSON' [ {"id":"a","text":"DNS recovered; requests now succeed."}, {"id":"b","text":"DNS lookup still fails before connection."} ] JSON

Expected selection, with diagnostics omitted:

{"selected_ids":["b"],"review_ids":[],"complete":true}

For real batches, collect and filter in one call, before raw output reaches the conversation:

jev-filter exec --task 'Find unresolved network failures' \

--analysis analysis.json -- your-collector --json

Start with the copyable analysis contract. Parse the packet even on exit 2: complete=false and review_ids need attention. Small examples teach the interface; exact paths, IDs, selectors, calculations and short outputs usually belong in native tools. Installation, keys and result handling →

Practical tutorials

Filter search results for RAG and AI agents: select passages against explicit evidence requirements before they enter the main model's context.
Search code by behavior: combine complete code symbols, optional bounded recall and semantic judgment.
Triage correlated logs: preserve request history and separate current failures from recovered events.

Copyable synthetic inputs and analysis contracts are included. Read the tutorials on the documentation site · FAQ.

Measured advantages

Paid live evidence from 2026-10-04, using synthetic inputs. Source hashes, per-run usage, timing and failures are public; each result belongs to its stated scope.

Returned tool context: 91.6–97.2% less across 24 real agent runs. Filtered completion was 12/12, raw completion 11/12, and all 24/24 ID sets were correct.
Same-output selection: Jev's batched API path screened 96 records in a median 1.313 s, versus 13.421 s for Luna and 14.543 s for Astra through signed-in Codex CLI. All 9/9 runs selected the same 48 IDs; CLI startup is included, and no primary-agent continuation follows Jev.
Jev-stage batching: 2 requests instead of 96, 56.5% fewer input tokens and 2.58× filtering speed versus single-record parallel Jev calls. This measures the Jev stage, not a whole-agent speedup.

Latency and cost vary. Five of six whole-operation cells were slower by 0.1–18.4%; cold API-equivalent cost ranged from 23.2% lower to 1.1% higher. Subscription billing remains unknown. Smaller context does not guarantee lower latency or billing.

Methods, negative results and reproduction · Per-run whole-operation data

Selection paths, measured results and scope

Fast semantic selection, checked against the same expected answer. All paths screened 96 records against two semantic conditions and returned exactly the same 48 matching IDs.

Measured path	Median screening time	Exact complete runs
Jev `jev-1.13.0` · auto-batched API	1.313 s	3/3
Luna `gpt-5.6-luna` · signed-in Codex CLI	13.421 s	3/3
Astra `gpt-6-astra` · signed-in Codex CLI	14.543 s	3/3

This compares available execution paths, including CLI startup and the primary-agent turn; native model latency is not isolated. Primary paths use medium reasoning and no tools. Three repetitions are a smoke sample, not a whole-agent speedup or workload guarantee. Per-run evidence · Method and reproduction

Advantage	Observed result	Scope and trade-off
Get repeated judgments sooner	2.58× filtering speed: 3.215 → 1.246 s, 61.2% less elapsed time; 56.5% fewer Jev input tokens.	Single-record parallel vs automatic batch-parallel Jev, 96 synthetic records × two predicates, three repetitions per arm; all 12/12 runs exact. Jev stage only, parallel worker cap 12; not a primary-model speed comparison. Data
Keep the agent's context focused	91.6–97.2% less returned tool context; filtered completion 12/12, raw 11/12; all 24/24 ID sets correct.	24 real agent runs, three synthetic scenarios, two primary models, two repetitions per arm. Five/six cells slower by 0.1–18.4%; cold API-equivalent cost ranged from 23.2% lower to 1.1% higher. Subscription billing remains unknown. Data
Recover more relevant code	Correct matches 4/12 → 10/12, zero false positives.	Exact vs opt-in recall, both with native semantic filtering. Returned context grew 5,284 → 9,706 bytes; absent lexical overlap still misses. Data
Inspect the change that matters	All 4/4 target changes selected in each repetition; returned context 23.9% lower than retaining every file.	Eight synthetic files, two repetitions. Semantic triage adds model usage and increases median whole-operation time 503 → 1,465 ms. Data
Connect real interfaces	13/13 paid E2E checks pass, including exact MCP evidence recovery and 64/64 survey topic labels.	Python CLI, fresh npm 0.4.0 JS/native package, official MCP, local Chromium extraction and survey. Small synthetic fixtures; resolved model identity is unavailable from these public adapters. Data
Reach inside a scroll container	Verified nested-scroll completion 0/3 → 3/3 under the same strict 0.55 / 0.10 policy.	Pinned browser source A/B; program adds observed container evidence. Six ordinary goal runs still need review. More successful work consumes more calls, context and time. Data

Whole-operation chart and reproduction

Method and all live results · Per-run JSON · CSV · Reproducible driver

Earlier evidence: offline contracts, batching and open-web limitations

Experiment	Dated result	Scope
Offline release contracts · 2026-10-04	3/13 → 13/13 expected behaviors; 3 → 0 false fixture actions.	Scripted responses, no model calls; reviews and diagnostic context increase. Data
Jev batching · 2026-09-22	56.5% fewer input tokens; batch + parallel 32.4% faster than single-record parallel.	96 synthetic records × two predicates, two repetitions; Jev stage only. Data
Historical whole operation · 2026-09-23	88–97% less returned tool context.	48 runs over four synthetic scenarios; cost and latency vary. Data
Historical hosted fixtures · 2026-09-30	Browser 15/15 Camofox, 18/18 CDP; desktop 12/12.	Local fixtures under the then-current planner policy; not a current strict-policy or open-web completion guarantee. Data
Public websites · 2026-09-30	16/48 read-only goals reached; 16/34 after excluding access walls and provider failures.	24 goals in one environment. Custom widgets and verification were weak. Data

Full methods and historical data. The latest browser experiments retain failed pruning variants and unknown provider attempts; they do not turn a safe stop into a completed goal.

Watch the program turn a goal into a verified result

<img src="docs/assets/showcase/browse.gif" alt="Recorded synthetic shop run: Jev selects observed controls, the program pauses before placing an order, and verification follows confirmation" width="100%"

Only the beginning is shown; read the rest in the repo

Jev Filter

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

Jev Filter

Quick start

Practical tutorials

Measured advantages

Watch the program turn a goal into a verified result