Koskamo

Undertow MCP

Undertow is a paid data product from the LiquiLens lab that examines market liquidity and stated-size exits across UST, credit, equities, ETF, FX, China basin, and crypto. It provides read-only tools for analyzing exit costs, venue concentration, depth, and liquidity tiers using public data, without executing trades or providing investment advice.

Endpoint and access

No sign-in to connect and list tools. Individual tools may still need a vendor account, credentials, or permissions; check the documented prerequisites.

Undertow MCP logo, by LiquiLensCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-06Published by LiquiLens
MCP endpoint (Streamable HTTP)
https://api.seiche.info/undertow/mcp
Vendor documentation

What its tools do

16 tools, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (16)

16 of 16 have a description · 16 of 16 declare behavior hints · 3 of 9 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Analyze market liquidity and exit costs for specific asset classes
  • Check venue concentration and depth episodes
  • Calculate crypto exit checks and funding costs
  • Review trade safety exit context in observe/paper mode

Source and maintenance

Community listingRegistry 1.13.0
mcp-registry: io.github.beepboop2025/undertow@1.13.0Source repositoryProject website
Maintenance checked

Protocol and capabilities

Server
undertow 1.13.0
MCP protocol negotiated in check
2025-11-25
Tools
16 advertised
Resources
0 advertised
Resource templates
0 advertised
Prompts
3 advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": false
  },
  "prompts": {
    "listChanged": false
  },
  "resources": {
    "subscribe": false,
    "listChanged": false
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Research, not investment advice. Cite clocks/rights; PARTIAL is a gap, not calm. Report sealed misses. Hourly depth estimates are not book walks/executable quotes/clearance. Gold inputs never verify cash. Priors: https://api.seiche.info/undertow/calibration.json. Anonymous: 200/UTC day. Quota/pricing/access: agent_access_status. Tokens: https://t.me/undertow_LiquiLens_bot /agent; entitlement checked per call. Free 7-day /trial: Alerts only; no subscriber MCP/meter change.

Tools

16 advertised

agent_access_status — Your access + meter
Advertised by the server during the last successful anonymous check.
Advertised read-only

Identity, entitlement, daily usage, access instructions; missing/refused subscriber tools.

agent_access_status input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
agent_access_status annotations
{
  "title": "Your access + meter",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
crypto_exit_check — Crypto exit sizes and freshness
Advertised by the server during the last successful anonymous check.
Advertised read-only

Four BTC sell sizes by rung/bracket. Withholds stale/future, uncovered or unconverted venues. Fees excluded; no trade clearance.

crypto_exit_check input schema
{
  "type": "object",
  "properties": {
    "sizes_usd": {
      "type": "array",
      "items": {
        "type": "number",
        "maximum": 1000000000000,
        "minimum": 0.01
      },
      "default": [
        1000,
        10000,
        100000,
        1000000
      ],
      "maxItems": 4,
      "minItems": 1,
      "uniqueItems": true
    },
    "max_age_seconds": {
      "type": "integer",
      "default": 7200,
      "maximum": 86400,
      "minimum": 60
    }
  },
  "additionalProperties": false
}
crypto_exit_check annotations
{
  "title": "Crypto exit sizes and freshness",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
crypto_funding_cost — Perpetual funding and fees
Advertised by the server during the last successful anonymous check.
Advertised read-only

Input perpetual funding/fees, net carry, linear break-even. Positive funding: longs pay shorts. Constant-rate scenario, not forecast.

crypto_funding_cost input schema
{
  "type": "object",
  "required": [
    "notional_usd",
    "side",
    "rate_bps_per_settlement",
    "settlements"
  ],
  "properties": {
    "side": {
      "enum": [
        "long",
        "short"
      ]
    },
    "settlements": {
      "type": "integer",
      "maximum": 10000,
      "minimum": 0
    },
    "notional_usd": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0.01
    },
    "round_trip_fee_bps": {
      "type": "number",
      "default": 0,
      "maximum": 10000,
      "minimum": 0
    },
    "rate_bps_per_settlement": {
      "type": "number",
      "maximum": 10000,
      "minimum": -10000,
      "description": "1 bp = 0.01%; positive rate means longs pay shorts."
    }
  },
  "additionalProperties": false
}
crypto_funding_cost annotations
{
  "title": "Perpetual funding and fees",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
crypto_portfolio_stress — Stress a crypto portfolio
Advertised by the server during the last successful anonymous check.
Advertised read-only

Linear input shocks, 20 exposures: P&L/equity, asset/venue concentration. Symbols label scenarios. No liquidation/probability model.

crypto_portfolio_stress input schema
{
  "type": "object",
  "required": [
    "equity_usd",
    "positions"
  ],
  "properties": {
    "positions": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "asset",
          "side",
          "notional_usd",
          "price_change_pct"
        ],
        "properties": {
          "side": {
            "enum": [
              "long",
              "short"
            ]
          },
          "asset": {
            "type": "string",
            "pattern": "^[A-Z0-9][A-Z0-9._-]{0,15}$"
          },
          "venue": {
            "type": "string",
            "pattern": "^[a-z0-9][a-z0-9._-]{0,31}$"
          },
          "cost_usd": {
            "type": "number",
            "default": 0,
            "maximum": 1000000000000,
            "minimum": 0
          },
          "notional_usd": {
            "type": "number",
            "maximum": 1000000000000,
            "minimum": 0.01
          },
          "price_change_pct": {
            "type": "number",
            "maximum": 1000,
            "minimum": -100
          }
        },
        "additionalProperties": false
      },
      "maxItems": 20,
      "minItems": 1
    },
    "equity_usd": {
      "type": "number",
      "maximum": 1000000000000,
      "minimum": 0.01
    }
  },
  "additionalProperties": false
}
crypto_portfolio_stress annotations
{
  "title": "Stress a crypto portfolio",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
depth_episodes — Realized depth collapses
Advertised by the server during the last successful anonymous check.
Advertised read-only

BTC depth-collapse onset/trough/recovery under preregistered rules. Zero differs from missing. Subscriber exit_desk_full: ETH.

depth_episodes input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
depth_episodes annotations
{
  "title": "Realized depth collapses",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
exit_cost — Exit cost at your size, per venue
Advertised by the server during the last successful anonymous check.
Advertised read-only

BTC nearest-rung sell estimates; interpolated bid-depth bands. Fees excluded; not executable. Sizes/freshness: crypto_exit_check.

exit_cost input schema
{
  "type": "object",
  "properties": {
    "size_usd": {
      "type": "number",
      "description": "position size in USD (published rungs run $1,000 to $1,000,000; nearest rung is used)",
      "exclusiveMinimum": 0
    }
  },
  "additionalProperties": false
}
exit_cost annotations
{
  "title": "Exit cost at your size, per venue",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
gold_cash_realisation — Gold sale, FX and cash scenario
Advertised by the server during the last successful anonymous check.
Advertised read-only

Gold sale/cash gates from inputs: decimal kg, fineness (0,1], USD/troy-oz bid, USD fees, currency/USD FX (USD=1), aware ISO clocks. Arithmetic and withheld-cash reasons only; no fetch, storage, execution or verified balance.

gold_cash_realisation input schema
{
  "type": "object",
  "required": [
    "quantity_kg",
    "fineness",
    "bid_usd_per_oz",
    "fees_usd",
    "fx_quote_per_usd",
    "fx_fee_bps",
    "quote_currency",
    "cutoff",
    "quote_asof",
    "fx_asof",
    "quote_valid_until",
    "fx_valid_until",
    "settlement_at",
    "cleared",
    "access_restricted",
    "pledged"
  ],
  "properties": {
    "cutoff": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "cleared": {
      "type": "boolean"
    },
    "fx_asof": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "pledged": {
      "type": "boolean"
    },
    "fees_usd": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "fineness": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "fx_fee_bps": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "quote_asof": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "quantity_kg": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "settlement_at": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "bid_usd_per_oz": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "fx_valid_until": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "quote_currency": {
      "enum": [
        "USD",
        "INR",
        "AED",
        "EUR",
        "GBP",
        "JPY",
        "CHF",
        "SGD"
      ],
      "type": "string"
    },
    "fx_quote_per_usd": {
      "type": "string",
      "pattern": "^[0-9]{1,12}(\\.[0-9]{1,12})?$",
      "maxLength": 25
    },
    "access_restricted": {
      "type": "boolean"
    },
    "quote_valid_until": {
      "type": "string",
      "maxLength": 64,
      "minLength": 1
    },
    "max_quote_age_seconds": {
      "type": "integer",
      "default": 900,
      "maximum": 86400,
      "minimum": 60
    }
  },
  "additionalProperties": false
}
gold_cash_realisation annotations
{
  "title": "Gold sale, FX and cash scenario",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
latest_article — Published editorial
Advertised by the server during the last successful anonymous check.
Advertised read-only

Latest published editorial: title/full text/URL/clock/quality receipt. No args or generated prose. Missing text/failed receipt errors. Board: liquidity_tiers.

latest_article input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
latest_article annotations
{
  "title": "Published editorial",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
liquidity_tiers — Full board: tiers + funding
Advertised by the server during the last successful anonymous check.
Advertised read-only

Nine segment tiers, Seiche funding, measure counts, replay/withholding reasons. PARTIAL: missing history/unpassed replay, never calm.

liquidity_tiers input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
liquidity_tiers annotations
{
  "title": "Full board: tiers + funding",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
market_corpus_context — Corpus coverage and source clocks
Advertised by the server during the last successful anonymous check.
Advertised read-only

Corpus coverage/rights/clocks. No summary pagination; other views: records/total/next_offset. Retrieval age is not observation freshness. Readings: liquidity_tiers.

market_corpus_context input schema
{
  "type": "object",
  "properties": {
    "view": {
      "enum": [
        "summary",
        "datasets",
        "flows",
        "exports"
      ],
      "type": "string",
      "default": "summary"
    },
    "limit": {
      "type": "integer",
      "default": 2,
      "maximum": 10,
      "minimum": 1
    },
    "offset": {
      "type": "integer",
      "default": 0,
      "maximum": 20000,
      "minimum": 0
    }
  },
  "additionalProperties": false
}
market_corpus_context annotations
{
  "title": "Corpus coverage and source clocks",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
research_network — Connected research
Advertised by the server during the last successful anonymous check.
Advertised read-only

Cross-product metadata, clocks, rights, next steps. Follow next_offset. Unavailable: retrieval/contract/size failure. Local counts: market_corpus_context. No shared score or authority.

research_network input schema
{
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "default": 2,
      "maximum": 25,
      "minimum": 1,
      "description": "Set for full metadata; omission returns 2 compact rows."
    },
    "topic": {
      "enum": [
        "all",
        "china",
        "regions",
        "information_controls",
        "model_evaluations",
        "funding",
        "institutions",
        "liquidity",
        "global_data"
      ],
      "type": "string",
      "default": "all",
      "description": "Catalog topic, not a free-text query."
    },
    "offset": {
      "type": "integer",
      "default": 0,
      "maximum": 1000,
      "minimum": 0,
      "description": "Zero-based page start; follow next_offset."
    }
  },
  "additionalProperties": false
}
research_network annotations
{
  "title": "Connected research",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
sealed_record — Sealed calls record (misses kept)
Advertised by the server during the last successful anonymous check.
Advertised read-only

Calls sealed/signed before outcomes: hits/misses, decided counts, ledger root. Report hits and misses together.

sealed_record input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
sealed_record annotations
{
  "title": "Sealed calls record (misses kept)",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
trade_safety_exit_context — PIT-bound exact-rung paper exit context
Advertised by the server during the last successful anonymous check.
Advertised read-only

Exact-rung BTC/USD observe/paper: request hash, PIT source/rights, conversion, bid bands, six venue clocks, startup SHA. No live mode/clearance.

trade_safety_exit_context input schema
{
  "type": "object",
  "required": [
    "request_hash",
    "mode",
    "instrument",
    "side",
    "venue",
    "requested_size_usd"
  ],
  "properties": {
    "mode": {
      "enum": [
        "observe",
        "paper"
      ]
    },
    "side": {
      "const": "sell"
    },
    "venue": {
      "type": "null"
    },
    "instrument": {
      "const": "BTC/USD"
    },
    "request_hash": {
      "type": "string",
      "pattern": "^[0-9a-f]{64}$",
      "description": "Opaque complete-request hash"
    },
    "requested_size_usd": {
      "enum": [
        1000,
        10000,
        100000,
        1000000
      ],
      "type": "number",
      "description": "Exact published USD rung"
    }
  },
  "additionalProperties": false
}
trade_safety_exit_context annotations
{
  "title": "PIT-bound exact-rung paper exit context",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
unwind_watch — Can the watched books exit? (free)
Advertised by the server during the last successful anonymous check.
Advertised read-only

Watched-filer headlines: effective positions, days-to-exit brackets, blind spots. No live execution model. Full grids: unwind_stress.

unwind_watch input schema
{
  "type": "object",
  "properties": {
    "cik": {
      "type": "integer",
      "description": "optional: SEC CIK of a watched filer (returns that filer's full FREE row instead of the all-filer headline)"
    }
  },
  "additionalProperties": false
}
unwind_watch annotations
{
  "title": "Can the watched books exit? (free)",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
venue_concentration — Depth concentration today
Advertised by the server during the last successful anonymous check.
Advertised read-only

BTC two-sided depth: HHI, effective/top venue, venue depth. Subscriber exit_desk_full: ETH and venue failure.

venue_concentration input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
venue_concentration annotations
{
  "title": "Depth concentration today",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}
venue_price_reconciliation — Consensus price when venues disagree
Advertised by the server during the last successful anonymous check.
Advertised read-only

BTC/ETH consensus: depth/squared-half-spread weights, deepest-venue blindness, concentration, dislocations. Experimental; no execution authority.

venue_price_reconciliation input schema
{
  "type": "object",
  "properties": {},
  "additionalProperties": false
}
venue_price_reconciliation annotations
{
  "title": "Consensus price when venues disagree",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

3 advertised

can_this_book_exit — Can this book leave the building?

Advertised by the server during the last successful anonymous check.

Unwind stress for the watched books: door width versus position size, margin clock, and what changed this quarter.

No arguments advertised.

exit_cost_check — What would selling cost right now?

Advertised by the server during the last successful anonymous check.

Venue-by-venue exit cost for a position size, with concentration and consensus-price context and the caveats stated.

size_usd
position size in USD (rungs $1k to $1M)
market_liquidity_briefing — Market liquidity briefing

Advertised by the server during the last successful anonymous check.

The full board read: tier per segment, realized depth episodes, and the sealed forward-calls record with misses quoted.

No arguments advertised.

Resources

0 advertised

No resource definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
1196 ms
95th percentile latency
1196 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 1196 ms · metadata changed · 16 tool(s), 0 resource(s), 0 resource template(s), 3 prompt(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http undertow-mcp https://api.seiche.info/undertow/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add undertow-mcp --url https://api.seiche.info/undertow/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable undertow-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "undertow-mcp": {
      "url": "https://api.seiche.info/undertow/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "undertow-mcp": {
      "type": "streamableHttp",
      "url": "https://api.seiche.info/undertow/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start undertow-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "undertow-mcp": {
      "type": "http",
      "url": "https://api.seiche.info/undertow/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http undertow-mcp https://api.seiche.info/undertow/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://api.seiche.info/undertow/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "undertow-mcp": {
      "serverUrl": "https://api.seiche.info/undertow/mcp"
    }
  }
}

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