Undertow market liquidity and exit-cost tools

Name: Undertow market liquidity and exit-cost tools
Author: beepboop2025

by beepboop2025version 1.13.0i★ –iRuns in the cloud

Registry nameio.github.beepboop2025/undertow

Install

Overview

Description from the maker (original English)

Dated exit evidence, depth, tiers and gold cash scenarios. No executable quotes or trade authority.

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 in the cloud
Transport: Streamable HTTP
Category: Other

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://api.seiche.info/undertow/mcp

Run this in your terminal

claude mcp add --transport http undertow https://api.seiche.info/undertow/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "undertow": {
      "url": "https://api.seiche.info/undertow/mcp"
    }
  }
}

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": {
    "undertow": {
      "type": "http",
      "url": "https://api.seiche.info/undertow/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://api.seiche.info/undertow/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account beepboop2025, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Otheri

More stars than 0% of the other 18397 servers in this category
Published to the registry more recently than 58% of the other 18397 servers in this category
Basic checks equal to or better than 100% of the other 18397 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 Undertow market liquidity and exit-cost tools 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.13.0) reached the registry 35 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, alalanet — check before you pay

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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.

Undertow MCP | Market liquidity and exit-cost tools

Connect and ask one question

Hosted Streamable HTTP MCP; no local server or API key for public read-only tools. Add the products you need to Claude Code:

claude mcp add --transport http undertow https://api.seiche.info/undertow/mcp

claude mcp add --transport http liquilens https://api.liquilens.in/mcp claude mcp add --transport http seiche https://api.seiche.info/mcp

Try this first: What is the estimated exit cost for a $100,000 BTC sell? Compare available venues, snapshot times and excluded costs.

Try it in your browser · Cursor configuration · Codex commands · Free three-product starter kit and skill

For a connected review, ask for institution evidence → funding context → BTC exit estimates, with each source date, coverage gap and limitation kept separate. Client/model costs and fair-use limits may apply. Research calls do not execute trades.

Endpoint: https://api.seiche.info/undertow/mcp (streamable HTTP, no install)

Undertow is the market-liquidity product of LIQUILENS PRIVATE LIMITED, a registered company in India (CIN U62011RJ2026PTC116792). One company, three connected financial-evidence products: LiquiLens investigates institutions, Seiche explains funding conditions, and Undertow examines market exit evidence. Together they support a review of an exposure from institution to funding to liquidity, with each source date, coverage gap and research limit retained.

Built for people and AI agents working internationally. Access is global; coverage is market-specific. Read the company and investor story or inspect the shared company profile.

Start with a question: Open the crypto workbench. Choose a dollar size and click to read the current published venue estimates, snapshot date and method. No account, key, wallet or client installation is needed for this example. The result is a depth-based estimate, not an executable quote. The same page provides Codex, Claude Code, Cursor and VS Code setup.

Try it live: liquilens-undertow.com/developers · API catalog: api.seiche.info/undertow

Undertow exposes estimated exit cost by position size and venue, the concentration of quoted depth, realized depth-collapse episodes, and liquidity tiers across market segments. This MCP 1.13.0 endpoint exposes 24 read-only tools, split into 16 public and 8 subscriber tools, plus 3 guided prompts. Its capability inventory is pinned to liquilens-undertow commit f103a9929a438f92964e7254edd7553c5a4dfe3a, the hosted implementation at deploy/hetzner/undertow-mcp. The stdio discovery server in undertow_mm/mcp_server.py is a separate discovery surface; it is neither this registry listing nor the public stdio adapter provided here.

The liquidity_tiers result includes public measure counts, replay eligibility and the published reason a score is withheld. A PARTIAL tier can remain even when every measure qualifies. Settlement histories and source receipts are available through the separate source-data MCP.

Add it

Claude Code:

claude mcp add --transport http undertow https://api.seiche.info/undertow/mcp

Claude.ai / ChatGPT / Cursor: add a custom connector or MCP server with the URL above. No key and no wallet for the free surface.

The free agent starter kit connects Undertow exit estimates and venue concentration with Seiche funding context and LiquiLens bank evidence. Follow the Hermes or OpenClaw guide for the shared setup. It uses public tools under fair-use limits; model-provider costs remain separate.

For a recurring research workflow, use the shared infrastructure setup guide and current interface catalog. They distinguish the public research MCPs, the eight-tool Research Desk and optional private runtimes. Private paper assessment is a separate integration; Undertow's public tools do not submit orders. Source observation dates, data rights and eligibility remain explicit even when hosting and backups are healthy.

This repository contains the discovery manifest, documentation and an optional anonymous stdio adapter for the hosted service. The official registry serves io.github.beepboop2025/undertow version 1.13.0.

Local stdio and container installation

The direct hosted URL above remains the simplest connection. For clients that require stdio, clone this repository at a reviewed commit and use Python 3.12+ and uv:

uv sync --locked

uv run --locked undertow-mcp

A Claude Desktop configuration can use uv as its command and ["run", "--directory", "/absolute/path/to/undertow-mcp", "--locked", "undertow-mcp"] as its arguments. The stdio adapter exposes only the 16 anonymous tools and three prompts; subscriber access uses the direct hosted URL instead.

For Docker and Glama's container build:

docker build -t undertow-mcp .

docker run --rm -i undertow-mcp

The root Dockerfile runs as an unprivileged user and starts stdio directly. No API key, bearer token, wallet, port, volume or environment setting is needed. Outbound HTTPS access to the fixed api.seiche.info endpoint is required. Redirects, environment proxies and arbitrary upstream URLs are disabled. Requests are capped at 64 KiB, responses at 2 MiB, and each upstream operation at 10 seconds including queue wait. No automatic retries or response cache can hide outages or spend a quota twice. Upstream version/catalog drift fails closed. Tool results, native isError values and rights refusals are preserved.

A Glama maintainer can configure the root Dockerfile, complete its build test, and publish a Glama release from the listing's admin page. A GitHub commit or release does not create a Glama release. This repository does not claim a grade until Glama has actually rescanned and inspected it. See Glama's release guide.

Hosted protocol compatibility

2026-07-28: stateless requests use server/discover, per-request _meta, MCP-Protocol-Version, and mirrored Mcp-Method / Mcp-Name routing headers.
2025-11-25, 2025-06-18, and 2025-03-26: retained legacy initialization, tools, prompts, notifications, batching, and ping behavior.
Discovery identifies all sixteen public and eight subscriber tools. Anonymous tools/list returns only the public inventory; entitlement is checked fresh on every subscriber request.
resources/list and resources/templates/list return explicit empty catalogs. resources/read returns a not-found error and never invents a resource.

Example

In the snapshot generated at 2026-08-08T15:01:22Z, selling $1,000,000 of BTC at the selected $1,000,000 published size rung cost 2.386 bp on Binance and 13.623 bp on Bitfinex: about $238.60 against $1,362.30. Gemini was the dearest observed venue in that same snapshot at 25.852 bp, or about $2,585.20.

Venue rankings can change during the day, and those differences are not visible in a single consolidated price. Undertow publishes the observation time and venue inputs with the estimate.

Crypto workbench and skills

The browser workbench combines published BTC exit comparisons with funding and portfolio scenarios. The scenario forms run locally in the browser.

The crypto agent kit contains three installable skills, a standard-library Python client, offline scenario calculators and a repeatable brief connecting Undertow, Seiche and optional LiquiLens institution evidence. Exact file digests accompany the download. Nothing runs or installs automatically.

Tools

Tool	What it serves	Surface
`agent_access_status`	Your current tier, daily meter, grants, and the exact route to Agent or Desk access	free
`board_full`	Every measure with its stress percentile or ACCRUING label, limits and analyst note	subscriber
`corporate_transmission`	Whether funding stress is reaching nonfinancial firms	subscriber
`crypto_exit_check`	Compare up to four requested BTC sell sizes across published rungs, with observation clocks and explicit stale/depth gaps; never interpolate a requested size	free
`crypto_funding_cost`	Calculate funding, round-trip fees and linear break-even from caller-supplied inputs	free
`crypto_portfolio_stress`	Apply caller-supplied price shocks and costs to linear exposures; show equity and gross asset/venue concentration	free
`depth_episodes`	Realized depth-collapse episodes with onset, trough, drawdown and recovery, against thresholds declared before any episode accrued	free
`divergence_status`	Compact comparison of corporate and household transmission regimes	subscriber
`exit_cost`	Per-venue sell cost in basis points at the nearest published size rung, cheapest and dearest venue with approximate dollar cost, and the venue spread	free
`exit_desk_full`	BTC and ETH at every published rung, plus the venue-failure withdrawal scenario	subscriber
`exit_schedule`	Position-sized hour-by-hour liquidation schedule beside immediate and TWAP baselines	subscriber
`gold_cash_realisation`	Caller-input gold sale and FX scenario with separate quote, settlement, access and pledge gates; no verified balance or executable quote	free
`household_credit`	Whether funding stress is reaching household balance sheets	subscriber
`latest_article`	The exact reviewed daily market-liquidity editorial with its evidence clock and publication authority	free
`liquidity_tiers`	A liquidity tier per market segment (UST, IG, HY, equities, ETF, FX, China basin, crypto) with the funding-stress overlay	free
`market_corpus_context`	Seiche corpus counts, rights and clocks, with bounded metadata pages; retrieval is not source-observation freshness	free
`research_network`	Bounded Palimpsest and Seiche research discovery with source clocks, availability and no blended score	free
`sealed_record`	The sealed forward-calls record, hash-chained and signed before outcomes, misses kept	free
`tide_clock`	Clock-phase liquidity map and exit-cost-by-phase for BTC or ETH perpetuals	subscriber
`trade_safety_exit_context`	Exact-rung BTC/USD sell context with request, PIT, rights, clock and depth checks; unavailable inputs remain unavailable, never order clearance	free
`unwind_stress`	Full institutional unwind and forced-sale stress pack	subscriber
`unwind_watch`	Banded public watch over institutional unwind time and forced-sale pressure, with exact sensitive quantities withheld	free
`venue_concentration`	The BTC depth backbone: top venue share of aggregate depth, HHI, effective venue count, per-venue depth in USD	free

| venue_price_reconciliation | A consensus mark weighted by resting depth over squared half-spread, plus the gap between t

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

Undertow market liquidity and exit-cost tools

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

alalanet — check before you pay

README from the maker

Undertow MCP | Market liquidity and exit-cost tools

Connect and ask one question

Add it

Local stdio and container installation

Hosted protocol compatibility

Example

Crypto workbench and skills

Tools