ZBS Index What actually exists in applied AI, with the source next to it

mcp server

Undertow — market liquidity map

Live exit costs by venue, depth concentration, and a sealed calls record that keeps its misses.

Description as published by the maintainer. Source

  • version 1.7.0
  • active

active — Most recent push to the repository was 2026-08-06.

What this server can do

8 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.

agent_access_status
Where this caller stands: whether the bearer token verified, the entitlement tier behind it (checked fresh, never trusted from the token), today's tool-call meter, and how to get full access. Call this first when a subscriber tool is missing from tools/list or a call is refused.
depth_episodes
Realized depth-collapse episodes in BTC ±1% aggregate depth: onset, trough, drawdown fraction and recovery time for each episode that crossed the pre-registered threshold. Detection rules were declared before any episode accrued. Use when asked whether crypto liquidity has actually broken lately, as opposed to how it looks right now. The subscriber exit_desk_full carries the ETH desk beside BTC.
exit_cost(size_usd)
What selling a position of a given USD size costs RIGHT NOW, venue by venue, from live public order books (BTC, six venues). Returns the per-venue cost in basis points at the nearest published size rung, the cheapest and dearest venue with approximate dollar cost, and the venue spread. Estimates interpolated from published quote depth — never a book walk, refreshed roughly hourly. Not investment advice.
liquidity_tiers
The Undertow board's TIER ROW: one liquidity tier per market segment (UST, IG, HY, EQUITY, ETF, FX, CN, CRYPTO, BSTOCK) plus the funding-stress overlay regime. PARTIAL means insufficient scoring history, reported honestly instead of guessed. Use for 'how liquid are markets today' at one glance, then drill into crypto with the other tools; the FULL board (every measure with its stress percentile and analyst note) is the subscriber board_full tool.
sealed_record
Undertow's own sealed forward-calls record: every call hash-chained and signed BEFORE its outcome, scored against the immutable point-in-time board for its horizon date, with misses kept published. Returns the full record with outcomes and the ledger root. Use when asked whether Undertow's judgements can be trusted, and quote the misses as prominently as the hits.
unwind_watch(cik)
Can a watched fund's book actually leave the building? Unwind stress for the watched 13F filers (incl. the Situational Awareness LP replay): effective position count, whole-book days-to-exit at 10% of a median day's volume (bracketed as-if median large / median small-mid name, and each count published as a band that contains it rather than as a point, because the exact count returns the basket's median dollar volume by one division), and the leverage x shock x maintenance margin grid with its three honest states (NO_CALL / CALL / EQUITY_EXHAUSTED). Default is the per-filer headline; pass cik for one filer's full free row. Display-only measure on frozen grids; 13F sees no shorts or options, so every number is a floor. Use when asked whether a fund's book could exit, or what the Aschenbrenner failure mode looks like in a current filing. Not investment advice.
venue_concentration
How concentrated the BTC depth backbone is today: which venue holds the largest share of ±1% aggregate depth, the HHI, the effective venue count (1/HHI), and per-venue depth in USD. Low effective venue count means an exit depends on one venue staying open. The subscriber exit_desk_full adds ETH and the venue-failure withdrawal scenario (what your exit costs if the top venue goes dark).
venue_price_reconciliation
What the price IS when venues disagree: the cross-venue consensus mark for BTC and ETH, weighted by resting depth over squared half-spread (NOT a median of last prices), with the BLINDNESS GAP — how far the deepest venue sits from consensus, i.e. how wrong you would be pricing off the venue you would naturally trust — plus depth concentration (CR1/HHI) and the names of any dislocated venues. Use for 'what is BTC/ETH actually worth right now', 'is an exchange dislocated', or before trusting any single venue's price. Experimental until its accrual gates pass; the payload says so. Not investment advice.

Last successful function declaration observed on . Source: https://api.seiche.info/undertow/mcp. We list what the server declared; we do not call any of these functions.

Endpoint status observed on . Source: https://api.seiche.info/undertow/mcp.

Signals

These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.

Signal Value What it measures Window Observed Source
GitHub stars 0 Number of GitHub accounts that bookmarked this repository since it was created. It is a bookmark count, not installs, not active users and not quality. cumulative, all time GitHub
Last commit 2026-08-06 Date of the most recent push to any branch. This is the strongest cheap indicator of whether the project is still maintained. point in time GitHub
Open issues 1 Open issues plus open pull requests, as GitHub counts them together. A high number can mean an active project or an abandoned one. as of fetch GitHub
Latest published version 1.7.0 Latest version string the maintainer published to the registry. as of fetch Model Context Protocol
Registry record last updated 2026-08-05 When the registry record was last updated by its maintainer. point in time Model Context Protocol
First listed in the MCP Registry 2026-08-05 Date this server was first published to the official MCP Registry. Not a usage or quality measure. point in time Model Context Protocol
repository status active The repository exists on GitHub and is not archived. This says nothing about how recently it was worked on. as of fetch GitHub
mcp tools declared 8 tools Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. as of probe api.seiche.info
mcp endpoint status ok The server listed 8 functions when asked. as of probe api.seiche.info

Where to get it

Related, by what their authors tagged them

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These share tags the maintainers applied themselves, such as liquidity-risk, crypto, market-data, x402. Common tags like "mcp" or "ai" are ignored for this: agreeing with six hundred other projects is not a similarity.

This is not a recommendation and not a test result. It is a map of what the authors said their work is about.

Also from beepboop2025

How the author describes it

Topics the maintainer set on GitHub: ai-agents, crypto, liquidity-risk, market-data, market-microstructure, mcp-server, model-context-protocol, x402.

This record as data

Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.

GET /api/v1/entries/mcp_server.json

Sources

  1. beepboop2025/undertow-mcp on GitHub — GitHub, observed , trust tier 3.
  2. Tools declared by the MCP server at https://api.seiche.info/undertow/mcp — api.seiche.info, observed , trust tier 1.
  3. Official MCP Registry — Model Context Protocol, observed , trust tier 1.