Hermes Plant — Agent Commerce Assurance MCP server

• action_safety_quick_gateFree

  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.

• action_safety_runwrite actionFree

  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.

• assurance_attestFree

  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.

• assurance_verifyFree

  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.

• bond_analyzeFree

  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.

• cashflowlens_analyzeFree

  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.

• dealanalyzer_analyzeFree

  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.

• emailguard_validateFree

  EmailGuard (x402-paid, $0.02): deterministic email/contact quality scorer — validity, deliverability score, disposable/role/free classification, typo suggestion. Pure function, no DNS.

• emailguard_validate_batchFree

  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.

• evidence_verifyFree

  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.

• freetier_statusFree

  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).

• get_checkout_policiesFree

  Return legal policy URLs required before checkout

• get_productFree

  Get a single product by slug

• get_x402_manifestFree

  Return the live x402 manifest with paid endpoint prices, Bazaar metadata, and buyer policy checks

• list_productsFree

  List active products from the Hermes Plant catalog

• mcp_risk_scoreFree

  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.

• options_priceFree

  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.

• payment_policy_decideFree

  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.

• portfolioguard_scoreFree

  PortfolioGuard (x402-paid, $0.15): deterministic portfolio risk scoring from holdings — volatility, Sharpe, max drawdown, concentration (HHI), diversification, plus per-rule findings.

• purchase_with_x402write actionFree

  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.

• score_destructguard_commandFree

  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.

• start_checkoutFree

  Start a Stripe checkout session for a product slug

• submit_reviewqueue_requestwrite actionFree

  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.

• walletguard_scoreFree

  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.

• waterfall_distributeFree

  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 %.

• –Code scanremote-only server, no package to scann/a
• Live reliabilityremote reachable in 2151ms17/20
• Tool poisoning25 tool descriptions checked15/15
• Auth qualityAPI key sent as a header8/15
• Maintenancelast push 58 days ago12/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Safety score

80/100

higher than 60% of 4,460 AI and agents servers

Tools

25

the typical AI and agents server has 6

Tools that change things

12%

typical: 0%. Fewer write tools means less an agent can break

Uptime

100%

of our recent checks; the typical remote AI and agents server answers 100%

Response time

644 ms

faster than 20% of 2,331 AI and agents servers

GitHub stars

1

more than 50% of 2,711 AI and agents servers

Hermes Plant — Agent Commerce Assurance: common questions

Is Hermes Plant — Agent Commerce Assurance MCP server safe?

Mostly: it is graded B (80/100). Read the Hermes Plant — Agent Commerce Assurance safety report

How do I install Hermes Plant — Agent Commerce Assurance?

It runs remotely at mcp.hermesplant.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Hermes Plant — Agent Commerce Assurance need an API key?

Yes. The registry entry asks for X-API-Key.

Is Hermes Plant — Agent Commerce Assurance maintained?

The last commit was 99 days ago (2026-07-28). The latest release is v2.0.2.

Is Hermes Plant — Agent Commerce Assurance up?

100% of our last 28 checks got an answer. We check remote servers about four times a day.

What can I use instead of Hermes Plant — Agent Commerce Assurance?

Servers from other publishers that do the same job: Emilia Protocol MCP server, Decionis MCP server and three.ws Provenance MCP server.

How does Hermes Plant — Agent Commerce Assurance compare with other AI and agents MCP servers?

safety score 80/100 (higher than 60% of 4,460 AI and agents servers); tools 25 (the typical AI and agents server has 6); tools that change things 12% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.