# Hermes Plant

> Deterministic finance and quant APIs for AI agents, paid per call over x402 - https://hermesplant.com

## Best short answer

Hermes Plant gives AI agents deterministic finance and quant APIs: DCF and IRR, LP/GP waterfalls, Black-Scholes Greeks, bond analytics, portfolio risk, and AML screening. Agents discover endpoints through OpenAPI, llms.txt, the x402 manifest, API catalog, MCP metadata, or agent skills; unpaid calls return 402 Payment Required; the agent pays per call over x402 and receives a repeatable result with evidence.

## Who it is for

- AI agents that need finance math they should not improvise.
- Developers building trading, fintech, PE, venture, real-estate, or crypto agents.
- Agent operators who need payment policy, MCP risk, command safety, approval routing, or contact-data validation before autonomous action.

## Finance APIs (primary conversion path)

No API key and no data feed are required for the public paid endpoints. The caller supplies inputs, receives an x402 challenge, pays per call, and gets deterministic output with evidence.

- [CashflowLens](https://hermesplant.com/agent-services/cashflowlens) - $0.20/call: NPV, IRR, XIRR & DCF valuation in a single call.
- [WaterfallLens](https://hermesplant.com/agent-services/waterfall) - $0.30/call: LP/GP distribution waterfalls, solved exactly.
- [OptionLens](https://hermesplant.com/agent-services/options) - $0.30/call: Black-Scholes option pricing with the full Greeks.
- [BondLens](https://hermesplant.com/agent-services/bond) - $0.25/call: Yield, duration, convexity & loan amortization.
- [PortfolioGuard](https://hermesplant.com/agent-services/portfolioguard) - $0.15/call: Portfolio risk scored straight from holdings.
- [WalletGuard](https://hermesplant.com/agent-services/walletguard) - $0.10/call: Wallet AML & compliance risk screening.
- [DealAnalyzer](https://hermesplant.com/agent-services/dealanalyzer) - $2.00/call: Full deal underwriting — DCF, returns, sensitivity & waterfall in one call.

## Agent trust and safety APIs (secondary)

- [Payment Policy Decision API](https://hermesplant.com/agent-services/payment-policy) - $0.05/call: Decide whether an agent should pay before it signs.
- [MCP Server Risk Analyzer](https://hermesplant.com/agent-services/mcp-risk) - $0.05/call: Score an MCP server before your agent installs it.
- [DestructGuard Command Score](https://hermesplant.com/agent-services/destructguard) - $0.10/call: Catch destructive agent commands before they run.
- [ReviewQueue Agent Submit](https://hermesplant.com/agent-services/reviewqueue) - $0.25/call: Route risky agent actions to human approval.
- [EmailGuard](https://hermesplant.com/agent-services/emailguard) - $0.02/call: Deterministic email & contact data validation.

## How an agent starts

1. Read the endpoint page or OpenAPI schema.
2. POST caller-owned inputs to the endpoint.
3. Inspect the 402 Payment Required challenge for method, path, amount, network, asset, payTo, facilitator, and resource binding.
4. Sign the x402 payment and retry the request.
5. Persist the response values, findings, and payment metadata in the agent run log.

## Endpoint reference pages

- [CashflowLens](https://hermesplant.com/agent-services/cashflowlens) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/cashflowlens/analyze
- [WaterfallLens](https://hermesplant.com/agent-services/waterfall) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/waterfall/distribute
- [OptionLens](https://hermesplant.com/agent-services/options) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/options/price
- [BondLens](https://hermesplant.com/agent-services/bond) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/bond/analyze
- [PortfolioGuard](https://hermesplant.com/agent-services/portfolioguard) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/portfolioguard/score
- [WalletGuard](https://hermesplant.com/agent-services/walletguard) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/walletguard/score
- [DealAnalyzer](https://hermesplant.com/agent-services/dealanalyzer) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/dealanalyzer/analyze
- [Payment Policy Decision API](https://hermesplant.com/agent-services/payment-policy) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/payment-policy/decide
- [MCP Server Risk Analyzer](https://hermesplant.com/agent-services/mcp-risk) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/mcp-risk/score
- [DestructGuard Command Score](https://hermesplant.com/agent-services/destructguard) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/destructguard/score
- [ReviewQueue Agent Submit](https://hermesplant.com/agent-services/reviewqueue) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/reviewqueue/submit
- [EmailGuard](https://hermesplant.com/agent-services/emailguard) - endpoint docs, example request/response, input schema, and x402 call snippets. API path: /api/agent-services/emailguard/validate

## Machine-readable discovery

- Homepage: https://hermesplant.com
- API catalog: https://hermesplant.com/.well-known/api-catalog
- OpenAPI: https://hermesplant.com/openapi.json
- x402 manifest: https://hermesplant.com/.well-known/x402
- API docs: https://hermesplant.com/docs/api
- Auth policy: https://hermesplant.com/auth.md
- MCP server card: https://hermesplant.com/.well-known/mcp/server-card.json
- MCP endpoint: https://hermesplant.com/mcp
- Content API: https://hermesplant.com/api/content
- Feed: https://hermesplant.com/feed.json
- Agent skills: https://hermesplant.com/.well-known/agent-skills/index.json

## Learn x402

- [What is x402? Explainer + glossary](https://hermesplant.com/guides/what-is-x402)
- [x402 and MCP: paid tools for AI agents](https://hermesplant.com/guides/x402-and-mcp-for-ai-agents)
- [x402 vs API keys](https://hermesplant.com/compare/x402-vs-api-keys)
- [x402 vs Stripe metered billing](https://hermesplant.com/compare/x402-vs-stripe-metered-billing)
- [x402 pay-per-call vs API subscriptions](https://hermesplant.com/compare/x402-pay-per-call-vs-api-subscriptions)

## Products (downloadable operator packs)

- [DestructGuard](https://hermesplant.com/products/destructguard): Free web tools for guarding AI coding agents: a blocklist rules editor and an audit log viewer. No signup.
- [IncidentScribe](https://hermesplant.com/products/incidentscribe): Turn agent JSONL logs into incident timelines.
- [ReviewQueue](https://hermesplant.com/products/reviewqueue): Human-in-the-loop approval queue for risky AI-agent commands - review, approve, or deny from a web queue.
- [DestructGuard Pro Pack](https://hermesplant.com/products/destructguard-pro): Stop AI coding agents from running destructive commands. Full CLI with git hooks and audit log, plus 3 curated rules tiers and a team rollout playbook.
- [IncidentScribe Postmortem Pack](https://hermesplant.com/products/incidentscribe-postmortem-pack): Postmortem templates, team guide, and GitHub Action for agent session forensics.
- [ReviewQueue Team Pack](https://hermesplant.com/products/reviewqueue-team-pack): Slack/Telegram notifications, shared-queue guide, and audit rollup for agent approval teams.
- [MCP Risk Analyzer Operator Pack](https://hermesplant.com/products/mcp-risk-analyzer): Evidence-backed MCP manifest scoring
- [Operator OS - Revenue Solopreneur Core](https://hermesplant.com/products/operator-os-core): The 30-minute weekly system that runs your revenue: 8 AI prompts plus a Notion dashboard for solopreneurs.

## Key guides

- [AI agent safety checklist](https://hermesplant.com/guides/ai-agent-safety-checklist)
- [Prevent force push](https://hermesplant.com/guides/prevent-force-push)
- [Block destructive SQL](https://hermesplant.com/guides/block-destructive-sql)
- [FAQ](https://hermesplant.com/faq)

## Command safety hubs

- [aws s3 rm --recursive — why AI agents must not run it unattended](https://hermesplant.com/commands/aws-s3-rm)
- [curl | sh — why AI agents must not run it unattended](https://hermesplant.com/commands/curl-pipe-sh)
- [docker rm -f — why AI agents must not run it unattended](https://hermesplant.com/commands/docker-rm-force)
- [DROP DATABASE — why AI agents must not run it unattended](https://hermesplant.com/commands/drop-database)
- [git clean -fdx — why AI agents must not run it unattended](https://hermesplant.com/commands/git-clean-fdx)
- [git push --force — why AI agents must not run it unattended](https://hermesplant.com/commands/git-push-force)
- [git reset --hard — why AI agents must not run it unattended](https://hermesplant.com/commands/git-reset-hard)
- [redis-cli FLUSHALL — why AI agents must not run it unattended](https://hermesplant.com/commands/redis-flushall)

## Founder / authority

- Operated in Jesse Gabriellini's project network. Founder hub: https://jesseg.io/portfolio/hermes-plant
- Hub landing: https://jesseg.io/hermes-plant

## Related founder projects

- SkillFrame (https://skillframe.co/)
- Revenu (https://revenuapp.com/)
- Phoenix Digital Growth (https://www.phoenixdigitalgrowthagency.com/)
- Phoenix Home Cleaning (https://phxhomecleaning.com/)

Support: contact@hermesplant.com