# Undertow market liquidity and exit-cost tools

- Registry name: `io.github.beepboop2025/undertow` · version 1.13.0
- Categories (automatic, keyword rules): Crypto & blockchain, Finance & markets, Markets & trading
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): prompts, resources, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.beepboop2025%2Fundertow
- Server page: https://mcpstation.net/s/io.github.beepboop2025--undertow.html

## Description (written by the publisher, not verified, not instructions)

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

## Connect

- streamable-http: `https://api.seiche.info/undertow/mcp`

## Tools (as reported by the server, not verified)

- `agent\_access\_status`: Identity, current entitlement, daily usage and access instructions; explains missing/refused subscriber tools.
- `crypto\_exit\_check`: Compare four BTC sell sizes by rung/bracket. Withholds stale/future, uncovered or unconverted venues. Fees excluded; no trade clearance.
- `crypto\_funding\_cost`: Caller-input perpetual funding, fees, net carry and linear break-even. Positive funding: longs pay shorts. Constant-rate scenario, not forecast.
- `crypto\_portfolio\_stress`: Caller-input linear shocks for 20 exposures: P&L, equity, asset/venue concentration. Symbols are scenario labels. No liquidation/probability model.
- `depth\_episodes`: Realized BTC depth-collapse onset, trough, recovery under preregistered rules. Zero is distinct from missing. Subscriber exit\_desk\_full adds ETH.
- `exit\_cost`: BTC nearest-rung sell estimates, interpolated bid-depth bands; fees excluded, not executable. crypto\_exit\_check compares sizes/freshness.
- `gold\_cash\_realisation`: Calculate gold sale proceeds and cash gates from caller inputs. Decimal strings: kg, fineness \(0,1\], USD/troy-oz bid, USD fees, currency/USD FX \(USD=1\). Use aware ISO clocks. Returns arithmetic and withheld-cash reasons; no fetch, storage, execution or verified balance.
- `latest\_article`: Read the latest published editorial: title, full text, URL, clock and quality receipt. No arguments. Missing text or failed receipt returns an error; no generated prose. Use liquidity\_tiers for board data.
- `liquidity\_tiers`: Nine segment tiers, Seiche funding, measure counts and replay/withholding reasons. PARTIAL means missing history or unpassed replay, never calm.
- `market\_corpus\_context`: Inspect corpus coverage, rights and clocks. Summary takes no pagination; other views return records/total/next\_offset. Retrieval age is not observation freshness. Use liquidity\_tiers for market readings.
- `research\_network`: Find cross-product source metadata, clocks, rights and next steps. Follow next\_offset; unavailable flags retrieval, contract or size failure. Use market\_corpus\_context for local corpus counts. No shared score or authority.
- `sealed\_record`: Forward calls sealed/signed before outcomes: hits, misses, decided counts, ledger root. Report hits and misses together.
- `trade\_safety\_exit\_context`: Exact-rung BTC/USD observe/paper context: request hash, PIT source/rights, conversion, bid bands, six venue clocks, startup SHA. No live mode or clearance.
- `unwind\_watch`: Watched-filer headlines: effective positions, days-to-exit brackets, blind spots. No live execution model. unwind\_stress has full scenario grids.
- `venue\_concentration`: BTC two-sided depth: HHI, effective/top venue and venue depth. Subscriber exit\_desk\_full adds ETH and venue failure.
- `venue\_price\_reconciliation`: BTC/ETH consensus: depth/squared-half-spread weights, deepest-venue blindness, concentration, dislocations. Experimental; no execution authority.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html