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Hermes Plant — Agent Commerce Assurance

R0· no sign-in

Preflight, approve, and prove consequential agent actions with signed evidence and x402 tools.

v2.0.2 · active · repository · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality85good
Trust90of 100
Uptime, 30 days95%
Latency p50279 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "hermes-plant": {
      "type": "http",
      "url": "https://mcp.hermesplant.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}
claude mcp add --transport http hermes-plant https://mcp.hermesplant.com/mcp --header "X-API-Key: ${X_API_KEY}"
[mcp_servers.hermes-plant]
url = "https://mcp.hermesplant.com/mcp"
env_http_headers = { "X-API-Key" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "hermes-plant": {
      "type": "remote",
      "url": "https://mcp.hermesplant.com/mcp",
      "enabled": true,
      "headers": {
        "X-API-Key": "{env:X_API_KEY}"
      }
    }
  }
}
{
  "mcpServers": {
    "hermes-plant": {
      "type": "http",
      "url": "https://mcp.hermesplant.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=hermes-plant&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmhlcm1lc3BsYW50LmNvbS9tY3AiLCJoZWFkZXJzIjp7IlgtQVBJLUtleSI6IiR7WF9BUElfS0VZfSJ9fQ%3D%3D"
}
{
  "servers": {
    "hermes-plant": {
      "type": "http",
      "url": "https://mcp.hermesplant.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}
{
  "mcpServers": {
    "hermes-plant": {
      "httpUrl": "https://mcp.hermesplant.com/mcp",
      "headers": {
        "X-API-Key": "${X_API_KEY}"
      }
    }
  }
}
extensions:
  "hermes-plant":
    enabled: true
    name: "hermes-plant"
    type: streamable_http
    uri: "https://mcp.hermesplant.com/mcp"
    headers:
      "X-API-Key": "${X_API_KEY}"
    timeout: 300

Placeholders to fill from your own secret store: ${X_API_KEY}. The registry never accepts secret values.

Quality 85 / 100good

protocol75 · weight 25
  • warn
    protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
  • n/a
    protocol.statelessonly applies to 2026-07-28 servers
  • pass
    protocol.transportstreamable HTTP
  • n/a
    protocol.list_ttlonly applies to 2026-07-28 servers
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene86 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations25 of 25 tools declare readOnlyHint or destructiveHint
  • warn
    tools.directory_hints19 of 25 tools declare all four hints; missing: list_products (destructiveHint); get_checkout_policies (destructiveHint); assurance_verify (destructiveHint); …
  • warn
    tools.token_costabout 11,332 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changesno tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

25 tools, about 11,332 tokens to load them all · tool set 9925a076e630 · checked 2026-10-20 10:35 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 90 / 100

provenance80
liveness98
freshness85
hygiene100

+repository +namespace-matches-repo +reachable +uptime-95% ~updated-84d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://mcp.hermesplant.com/mcp streamable-httpnoneyes95%279 ms2025-11-252026-10-20

Tools (25)

action_safety_quick_gateAI 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_runComplete 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_attestAssurance 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_verifyread-onlyVerify 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_analyzeBondLens (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_analyzeCashflowLens (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_analyzeDealAnalyzer (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_validateEmailGuard (x402-paid, $0.02): deterministic email/contact quality scorer — validity, deliverability score, disposable/role/free classification, typo suggestion. Pure function, no DNS.
emailguard_validate_batchValidate 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_verifyEvidence 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_statusread-onlyCheck 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_policiesread-onlyReturn legal policy URLs required before checkout
get_productread-onlyGet a single product by slug
get_x402_manifestread-onlyReturn the live x402 manifest with paid endpoint prices, Bazaar metadata, and buyer policy checks
list_productsread-onlyList active products from the Hermes Plant catalog
mcp_risk_scoreMCP 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_priceOptionLens (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_decidePayment 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_scorePortfolioGuard (x402-paid, $0.15): deterministic portfolio risk scoring from holdings — volatility, Sharpe, max drawdown, concentration (HHI), diversification, plus per-rule findings.
purchase_with_x402Purchase 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_commandScore 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_checkoutStart a Stripe checkout session for a product slug
submit_reviewqueue_requestSubmit 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_scoreWalletGuard (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_distributeWaterfallLens (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 %.

Schemas: list_tools.

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Official server.json
{
  "name": "io.github.JesseGdotIO/hermes-plant",
  "title": "Hermes Plant — Agent Commerce Assurance",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.hermesplant.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-API-Key",
          "isSecret": true,
          "description": "Free-tier or plan API key. Get a free key at https://hermesplant.com/pricing (250 calls/month, no crypto wallet). Optional — without it, paid tools return an x402 payment challenge."
        }
      ]
    }
  ],
  "version": "2.0.2",
  "repository": {
    "url": "https://github.com/JesseGdotIO/hermesplant-mcp-server",
    "source": "github"
  },
  "description": "Preflight, approve, and prove consequential agent actions with signed evidence and x402 tools."
}