Deterministic finance & quant tools AI agents call and pay for per request over x402 (USDC on Base) — DCF/IRR/XIRR/NPV, LP/GP distribution waterfalls, Black-Scholes pricing & Greeks, bond yield/duration/amortization, portfolio risk, wallet AML screening, and email validation. No API key, no data feed; deterministic, evidence-backed; $0.02–$2.00 USDC per call.
Scored across 25 tools
Many tools are distinct lifecycle stages (manifest, policy, purchase, verify, attest), but several subfamilies overlap: DealAnalyzer explicitly subsumes CashflowLens and WaterfallLens, and action_safety_quick_gate, action_safety_run, score_destructguard_command, and submit_reviewqueue_request all sit in the same safety/review space. The descriptions are detailed enough to usually disambiguate, but misselection is plausible.
Naming mixes at least three conventions: verb-first commands (get_product, start_checkout, purchase_with_x402), object-verb branded tools (bond_analyze, assurance_attest, emailguard_validate), and noun-noun labels (mcp_risk_score, options_price, freetier_status). The names are readable and all snake_case, but the pattern is not predictable enough for an agent to infer tool names.
25 tools is at the heavy threshold, and the territory is sprawling: commerce, payments, safety, audit, email validation, MCP risk, and multiple finance analytics lenses. Some tools also duplicate functionality (emailguard_validate_batch vs emailguard_validate, DealAnalyzer vs CashflowLens + WaterfallLens), making the set feel padded rather than curated.
The commerce/x402 flow is fairly complete: manifest, payment policy decision, purchase, evidence verification, and assurance attest/verify all exist. However, there are notable gaps for an audit-claiming platform: no tool to list or query assurance records, payment history, or purchase status, and the safety workflow is fragmented across several overlapping services. The domain is so broad that complete coverage is unclear, but core buy/verify/analyze paths are covered.
AI agent action safety quick gate ($0.01 over x402 or free-tier quota). Deterministically scores a consequential action and returns the exact next call: proceed, request full DestructGuard evidence, or run the complete Action Safety workflow.
Inputs: command (required), cwd, repo, actor, +12 more. Returns: ok, httpStatus, paymentRequired
Complete AI agent action safety workflow ($0.25 over x402 or free-tier quota): DestructGuard evidence, conditional ReviewQueue triage for high or critical risk, an honest decision, signed receipt, and 30-day status record. Triage does not imply human approval.
Inputs: command (required), cwd, repo, actor, +12 more. Returns: ok, httpStatus, paymentRequired
Assurance Attest (x402-paid, $0.05): bind one x402 payment intent or MCP tool call to a canonical HMAC-signed record (binding hash, policy verdict, findings, optional settlement outcome). Loop it after every payment or tool call to build a tamper-evident audit trail a third party can check at the free verify endpoint.
Inputs: intent (required), subject (required), protocol (required), payer, +10 more. Returns: ok, httpStatus, paymentRequired
Verify a Hermes-signed assurance record for free: recomputes the canonical hash (hermes-stable-json-v1 + SHA-256) and HMAC signature server-side and reports recordHashValid / signatureValid. Use it to audit attestations produced by assurance_attest without trusting the agent that produced them.
Inputs: record (required), integrity (required). Returns: ok, httpStatus, paymentRequired
BondLens (x402-paid, $0.25): deterministic fixed-income and loan analytics. Bond mode solves price<->yield-to-maturity, duration, and convexity; loan mode (send principal+annualRate+termMonths) returns an amortization schedule.
Inputs: payer, price, yield, apiKey, +14 more. Returns: ok, httpStatus, paymentRequired
CashflowLens (x402-paid, $0.20): deterministic NPV, IRR, XIRR, DCF valuation, MOIC/DPI/TVPI, and payback period from a cashflow series. Use for valuation and return analysis instead of letting the model estimate.
Inputs: cashflows (required), dcf, nav, payer, +10 more. Returns: ok, httpStatus, paymentRequired
DealAnalyzer (x402-paid, $2.00): the flagship. Deterministic full deal underwrite in a single call — DCF valuation (EV, equity value, implied share price), fund returns (IRR/MOIC), and the LP/GP distribution waterfall, plus sensitivity. Combines what CashflowLens + WaterfallLens do, cross-checked.
Inputs: dcf (required), payer, apiKey, channel, +8 more. Returns: ok, httpStatus, paymentRequired
EmailGuard (x402-paid, $0.02): deterministic email/contact quality scorer — validity, deliverability score, disposable/role/free classification, typo suggestion. Pure function, no DNS.
Inputs: email (required), name, payer, apiKey, +9 more. Returns: ok, httpStatus, paymentRequired
Validate up to 20 emails in one tool call — one deterministic verdict per record (validity, deliverability score, disposable/role/free classification, typo suggestion, canonical normalization). Pass your free apiKey (250 records/mo, no wallet — https://hermesplant.com/pricing) and each record serves from quota. Results preserve input order; the batch stops at the first 402 (quota exhausted) and marks the rest skipped so you can upgrade and resume.
Inputs: records (required), payer, apiKey, channel, +6 more. Returns: ok, httpStatus, paymentRequired
Evidence Verification (x402-paid, $0.05): verify an agent-commerce evidence bundle before trusting a paid result — x402 challenge/receipt/policy-decision/service-response artifacts, endpoint and price binding, freshness, hashes, synthetic-proof leakage. Returns verified / needs_review / rejected / insufficient_evidence with per-rule evidence.
Inputs: artifacts (required), payer, apiKey, policy, +8 more. Returns: ok, httpStatus, paymentRequired
Check a free API key's remaining monthly quota, reset date, and upgrade path. Pass your hp_free_ key as apiKey. No key yet? POST an email to https://hermesplant.com/api/keys/free (250 calls/mo, no wallet).
Inputs: apiKey (required). Returns: ok, httpStatus, paymentRequired
Return legal policy URLs required before checkout
Inputs: no named parameters. Returns: ok, httpStatus, paymentRequired
Get a single product by slug
Inputs: slug (required). Returns: ok, httpStatus, paymentRequired
Return the live x402 manifest with paid endpoint prices, Bazaar metadata, and buyer policy checks
Inputs: no named parameters. Returns: ok, httpStatus, paymentRequired
List active products from the Hermes Plant catalog
Inputs: no named parameters. Returns: ok, httpStatus, paymentRequired
MCP Server Risk Analyzer (x402-paid, $0.05): score an MCP server manifest for security risk before install — destructive tools, over-broad scopes, weak auth, egress — with per-tool findings and fixes.
Inputs: tools (required), payer, apiKey, server, +9 more. Returns: ok, httpStatus, paymentRequired
OptionLens (x402-paid, $0.30): deterministic Black-Scholes price and full Greeks (delta, gamma, vega, theta, rho) for European calls/puts, with dividend yield, intrinsic/time value, and moneyness.
Inputs: spot (required), strike (required), volatility (required), timeToExpiry (required), +12 more. Returns: ok, httpStatus, paymentRequired
Payment Policy Decision (x402-paid, $0.05): deterministic allow / deny / needs_review before your agent signs an x402 payment — checks resource binding, amount vs expected price, network, payTo, facilitator, replay readiness, PII leakage, and buyer spend limits, with evidence-backed findings. Loop it over every payment; pair with assurance_attest for a signed record.
Inputs: resourceUrl (required), tags, asset, payTo, +17 more. Returns: ok, httpStatus, paymentRequired
PortfolioGuard (x402-paid, $0.15): deterministic portfolio risk scoring from holdings — volatility, Sharpe, max drawdown, concentration (HHI), diversification, plus per-rule findings.
Inputs: holdings (required), payer, apiKey, channel, +8 more. Returns: ok, httpStatus, paymentRequired
Purchase a one-time product via x402 (returns 402 challenge or fulfillment JSON). Call get_x402_manifest first, verify method/path/network/amount/payTo, then sign and retry with PAYMENT-SIGNATURE.
Inputs: slug (required), email, payer, apiKey, +7 more. Returns: ok, httpStatus, paymentRequired
Score a command/action with the x402-paid DestructGuard service. Call get_x402_manifest first, verify the DestructGuard price and buyer policy, then retry the 402 challenge with an x402 payment signature.
Inputs: command (required), cwd, repo, actor, +11 more. Returns: ok, httpStatus, paymentRequired
Start a Stripe checkout session for a product slug
Inputs: slug (required). Returns: ok, httpStatus, paymentRequired
Submit a command/action to the x402-paid ReviewQueue agent service. Call get_x402_manifest first, verify the ReviewQueue price and buyer policy, then retry the 402 challenge with an x402 payment signature.
Inputs: command (required), repo, actor, payer, +11 more. Returns: ok, httpStatus, paymentRequired
WalletGuard (x402-paid, $0.10): analyzes caller-provided sanctions, exposures, labels, and funding context. Positive risk findings receive a score; no risk findings means unknown with a null score and review required. No chain lookup, independent sanctions screening, or compliance clearance.
Inputs: wallet (required), payer, apiKey, labels, +11 more. Returns: ok, httpStatus, paymentRequired
WaterfallLens (x402-paid, $0.30): deterministic LP/GP distribution waterfall (return of capital, preferred, GP catch-up, carried-interest split) with the exact split, per-tier breakdown, LP MOIC, and effective carry %.
Inputs: distributable (required), contributedCapital (required), payer, years, +13 more. Returns: ok, httpStatus, paymentRequired
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