Undertow market liquidity and exit-cost tools

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Undertow market liquidity and exit-cost tools": {
      "url": "https://api.seiche.info/undertow/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (16)

• agent_access_status read-only

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

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• crypto_exit_check read-only

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

  Parameters:

  • sizes_usd — array
  • max_age_seconds — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• crypto_funding_cost read-only

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

  Parameters:

  • notional_usd (required) — number
  • side (required)
  • rate_bps_per_settlement (required) — number — 1 bp = 0.01%; positive rate means longs pay shorts.
  • settlements (required) — integer
  • round_trip_fee_bps — number

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• crypto_portfolio_stress read-only

  Caller-input linear shocks for 20 exposures: P&L, equity, asset/venue concentration. Symbols are scenario labels. No liquidation/probability model.

  Parameters:

  • equity_usd (required) — number
  • positions (required) — array

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• depth_episodes read-only

  Realized BTC depth-collapse onset, trough, recovery under preregistered rules. Zero is distinct from missing. Subscriber exit_desk_full adds ETH.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• exit_cost read-only

  BTC nearest-rung sell estimates, interpolated bid-depth bands; fees excluded, not executable. crypto_exit_check compares sizes/freshness.

  Parameters:

  • size_usd — number — position size in USD (published rungs run $1,000 to $1,000,000; nearest rung is used)

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• gold_cash_realisation read-only

  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.

  Parameters:

  • quantity_kg (required) — string
  • fineness (required) — string
  • bid_usd_per_oz (required) — string
  • fees_usd (required) — string
  • fx_quote_per_usd (required) — string
  • fx_fee_bps (required) — string
  • quote_currency (required) — string
  • cutoff (required) — string
  • quote_asof (required) — string
  • fx_asof (required) — string
  • quote_valid_until (required) — string
  • fx_valid_until (required) — string
  • settlement_at (required) — string
  • cleared (required) — boolean
  • access_restricted (required) — boolean
  • pledged (required) — boolean
  • max_quote_age_seconds — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• latest_article read-only

  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.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• liquidity_tiers read-only

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

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• market_corpus_context read-only

  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.

  Parameters:

  • view — string
  • limit — integer
  • offset — integer

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• research_network read-only

  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.

  Parameters:

  • limit — integer — Set for full metadata; omission returns 2 compact rows.
  • topic — string — Catalog topic, not a free-text query.
  • offset — integer — Zero-based page start; follow next_offset.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• sealed_record read-only

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

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• trade_safety_exit_context read-only

  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.

  Parameters:

  • request_hash (required) — string — Opaque complete-request hash
  • mode (required)
  • instrument (required)
  • side (required)
  • venue (required) — null
  • requested_size_usd (required) — number — Exact published USD rung

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• unwind_watch read-only

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

  Parameters:

  • cik — integer — optional: SEC CIK of a watched filer (returns that filer's full FREE row instead of the all-filer headline)

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• venue_concentration read-only

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

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• venue_price_reconciliation read-only

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

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

Publisher website Repository

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.