Computes deterministic fair market value (USD), yield-to-maturity (approximate and exact cashflow YTM %), Macaulay and modified duration (years), convexity, DV01 (USD per 1bp shift), and Merton jump-diffusion 95% confidence bounds for a single corporate, sovereign, or RWA fixed-income security. Use when: pricing or analyzing an individual bond CUSIP/ticker given par value, coupon, maturity, and clean market price. Do not use when: scanning FINRA TRACE secondary dealer prints or structuring single-security option collars (use get_debt_radar instead), or running multi-position portfolio macro shocks and VaR/CVaR (use run_portfolio_stress_test instead). Behavior: Read-only, deterministic, side-effect-free calculation ($0.50 USD per call via apiKey or paymentToken; returns an x402/MPP paymentChallenge without charging if credentials are omitted).

Screens a corporate entity or individual counterparty against the U.S. Treasury OFAC Specially Designated Nationals (SDN) and consolidated sanctions registries using exact identifier matching (LEI/CIK/CRN) and Jaro-Winkler fuzzy phonetic resolution, returning a compliance verdict and SHA-256 Merkle audit proof. Use when: verifying whether a specific company, vessel, wallet counterparty, or individual is sanctioned before onboarding or settlement. Do not use when: retrieving macro-level weekly sanctions policy trends (use get_sovereign_policy_brief instead) or drafting regulatory comment letters on FinCEN/OFAC rulemakings (use synthesize_regulatory_docket instead). Behavior: Read-only, deterministic compliance check ($0.50 USD per call via apiKey or paymentToken; returns an x402/MPP paymentChallenge without charging if credentials are omitted).

Retrieves secondary-market FINRA TRACE dealer execution metrics (last clean price % of par, Z-spread over 10Y U.S. Treasury in bps, effective yield-to-worst %, dealer bid-ask spread in bps, and daily institutional block volume in USD) and solves a Black-Scholes zero-cost 1-year European option collar (put floor strike % and call cap strike %) for a single bond CUSIP or ticker. Use when: inspecting secondary-market dealer liquidity/spreads or structuring a zero-cost downside put / upside call collar for a single bond issue. Do not use when: calculating exact cashflow duration/convexity/DV01 for a custom face value (use get_cusip_valuation instead), or stress-testing a multi-bond portfolio across macro rate shocks (use run_portfolio_stress_test instead). Behavior: Read-only, deterministic market tape and option solver ($0.50 USD per call via apiKey or paymentToken; returns an x402/MPP paymentChallenge without charging if credentials are omitted).

Calculates institutional RWA clearing house take-rates (in basis points and USD), cross-chain settlement bridge tolls, platform SaaS subscription fees, and net annual clearing cost projections across Ariadne Nexus membership tiers. Use when: estimating monthly or annual clearing fees, basis-point take-rates, and cross-chain bridge settlement costs before syndicating an RWA vault or selecting an institutional billing tier. Do not use when: provisioning an API key or generating a live Stripe checkout session (use provision_agent_key instead), or valuing bond CUSIPs (use get_cusip_valuation instead). Behavior: Free, open-access, read-only deterministic calculator ($0.00 USD; requires no apiKey or paymentToken and performs no external network calls or billing mutations).

Executes multi-position fixed-income portfolio stress testing across customizable macroeconomic rate shocks (parallel benchmark shifts in bps, rating-weighted credit spread widening in bps, yield curve twists: PARALLEL/STEEPENER/FLATTENER/INVERSION, and liquidity haircuts), computing aggregate portfolio DV01, 1-year 95%/99% parametric Value-at-Risk (VaR), 99% Expected Shortfall (CVaR), position-level P&L attribution, 10-Year Treasury Note futures (ZN) short hedge ratios, and portfolio-wide zero-cost European collar strikes. Use when: stress-testing a multi-bond portfolio under interest-rate or credit-spread shocks, calculating portfolio VaR/CVaR, or sizing 10Y Treasury futures duration hedges. Do not use when: pricing a single bond CUSIP without a macro shock scenario (use get_cusip_valuation instead) or checking single-CUSIP FINRA TRACE dealer prints (use get_debt_radar instead). Behavior: Read-only, deterministic portfolio simulation ($2.50 USD per call via apiKey or paymentToken; defaults to a 3-bond institutional benchmark portfolio if portfolio array is omitted; returns an x402/MPP paymentChallenge without charging if credentials are omitted).

Generates the Weekly Sovereign Macro-Prudential & Sanctions Monitor for Federal Reserve (FOMC / Financial Stability), U.S. Treasury (OFR / OFAC / FinCEN), and SEC DERA policy desks, combining Dual-Track monetary stability indicators (10Y-3M yield curve inversion, FINRA TRACE G-SIB credit spread dislocations, H.8 bank credit impulse) and autonomous x402 sanctions enforcement telemetry. Use when: synthesizing macro-prudential systemic risk briefings, monitoring aggregate sanctions enforcement trends, or evaluating FAR Subpart 13.2 ($9,500 GPC Micro-Purchase) policy data procurement options. Do not use when: screening a specific individual or corporate counterparty against the OFAC SDN list (use screen_ofac_entity instead), or drafting a formal APA 5 U.S.C. § 553 public comment letter for a specific agency rulemaking docket (use synthesize_regulatory_docket instead). Behavior: Read-only, deterministic intelligence report generator ($1.00 USD per call via apiKey or paymentToken; returns an x402/MPP paymentChallenge without charging if credentials are omitted).

Drafts a formal Administrative Procedure Act (APA, 5 U.S.C. § 553) Public Comment Letter cited with empirical Ariadne Nexus FINRA TRACE G-SIB spread and x402 OFAC SDN screening telemetry for active Federal Reserve/OFR, FinCEN/OFAC, SEC DERA, or FSOC rulemaking dockets. Use when: preparing a statutory public comment submission or empirical policy memorandum for a specific federal financial regulatory docket (FED_TREASURY_OFR, FINCEN_OFAC_X402, SEC_DERA_TRACE, or FSOC_NONBANK_CONTAGION). Do not use when: reading the weekly macro-prudential policy monitor (use get_sovereign_policy_brief instead) or screening an entity against OFAC sanctions lists (use screen_ofac_entity instead). Behavior: Read-only local document synthesis ($2.50 USD per call via apiKey or paymentToken). Does NOT automatically transmit or file comments with regulations.gov or any external agency; returns the structured comment text and cryptographic SHA-256 citation hash for human review.

Returns pricing specifications, monthly query quotas, rate limits (RPM), 1-click Stripe Checkout links (starting at $10/mo MCP Builder Pass up to $9,500/yr FAR 13.2 GPC & Unlimited Closing Blanket licenses), Stripe Projects CLI commands (stripe provision ariadnenexus), and optional live Stripe Checkout session URLs (mint_stripe_session: true) for obtaining a live Ariadne Nexus Developer API key (nexus_live_...). Use when: an agent, developer, escrow attorney, or litigation desk needs pricing comparisons or a direct clickable Stripe Checkout URL after encountering a paymentChallenge on paid tools. Do not use when: redeeming an already-paid Stripe Checkout cs_... session ID for its API key (use redeem_checkout_session instead), or estimating basis-point RWA clearing take-rates (use calculate_clearing_fee instead). Behavior: Free discovery and checkout-link generator ($0.00 USD). Does not charge any payment method on invocation; billing only occurs if the human completes payment at the returned Stripe Checkout URL.

Verifies a completed Stripe Checkout session (cs_...) directly against Ariadne Nexus billing and deterministically returns the buyer’s live HMAC-signed nexus_live_... API key, monthly quota, and 1-click Cursor / VS Code / Claude Code installation links. Use when: a user has just completed payment at Stripe Checkout and wants to immediately claim and activate their nexus_live_... API key inside Claude, Cursor, VS Code, or an autonomous agent without waiting for email delivery. Do not use when: the user has not yet paid or needs a checkout link first (use provision_agent_key instead). Behavior: Free, read-only, deterministic verification and HMAC credential derivation ($0.00 USD; idempotent across repeated invocations for the same paid cs_... session ID).

Issues a KMS-attested Statutory Closing Safe-Harbor Certificate combining OFAC SDN Jaro-Winkler/LEI Merkle proof screening, multi-factor hedonic collateral fair-value attestation, and HUD-1 Line 1109 pass-through fee calculation ($95 flat or 10 bps on escrow notional). Use when: an escrow agent, title company, aviation/maritime closing attorney, or autonomous clearing agent requires a signed compliance and fair-value certificate prior to wire disbursement. Do not use when: you only need a standalone counterparty name check without collateral valuation or HUD-1 closing fee calculation (use screen_ofac_entity instead). Behavior: Read-only, deterministic, idempotent compliance and valuation oracle with zero external side effects.

Computes the 8-variable Beneish M-Score, first-digit Benford Chi-Square statistic, Halliburton II event-study t-statistic, Dodd-Frank § 922 (10%-30%) SEC Whistleblower bounty projection, and PSLRA litigation syndicate recovery model for a public issuer. Use when: a litigation finance fund, securities class-action counsel, or whistleblower syndicate requires quantitative accounting anomaly and event-study verification under 17 CFR § 240.21F-4(b)(3). Do not use when: pricing standard fixed-income CUSIP bonds or running macro interest rate stress tests (use get_cusip_valuation or run_portfolio_stress_test instead). Behavior: Read-only, deterministic quantitative forensic calculation with zero external side effects.