Hermes Plant Email API

openapi: 3.2.0
info:
  title: Hermes Plant - Agent Action Safety and Commerce Assurance…
  description: 'Deterministic, test-backed controls for AI agents before consequential shell, Git, SQL, infrastructure, deployment, wallet, and x402 payment actions. Use the one-cent Action Safety quick gate for classification; the complete workflow for score, conditional review triage, execution evidence, and a signed receipt; and payment-policy endpoints for spend assurance. Finance and quant utilities remain available as component services. Pay per call over x402 (USDC on Base); no API key required. Pricing: https://hermesplant.com/pricing. Errors: https://hermesplant.com/docs/api/errors. Changelog: https://hermesplant.com/changelog.'
  version: 1.0.0
  contact:
    name: Hermes Plant support
    email: contact@hermesplant.com
    url: https://hermesplant.com/contact
  termsOfService: https://hermesplant.com/legal/terms
  license:
    name: Proprietary — see Terms of Service
    url: https://hermesplant.com/legal/terms
  x-pricing-url: https://hermesplant.com/pricing
  x-errors-contract-url: https://hermesplant.com/docs/api/errors
  x-changelog-url: https://hermesplant.com/changelog
  x-changelog-feeds:
    rss: https://hermesplant.com/changelog/feed.xml
    jsonFeed: https://hermesplant.com/changelog/feed.json
  x-x402-manifest-url: https://hermesplant.com/.well-known/x402
  x-mcp-server-card-url: https://hermesplant.com/.well-known/mcp/server-card.json
  x-llms-txt-url: https://hermesplant.com/llms.txt
  x-risk-reversal:
  - Refund any settled call whose documented inputs do not reproduce the same output.
  - First $1 of calls free for the first 100 verified agents.
  x-guidance: Call Hermes Plant before a consequential agent action or x402 payment. Start with POST /api/agent-services/action-safety/quick for a $0.01 deterministic preflight risk classification. Use POST /api/agent-services/action-safety/run when you need the complete $0.25 workflow with conditional review triage, execution evidence, status, and a signed receipt. Use POST /api/agent-services/payment-policy/decide to validate amount, asset, network, recipient, and buyer policy before signing. Use focused component endpoints only when you already own orchestration. Payment is x402 USDC on Base; see https://hermesplant.com/pricing and https://hermesplant.com/docs/api/errors.
  x-hermes-guidance:
    summary: Call Hermes Plant before a consequential agent action or x402 payment.
    workflows:
    - name: Agent Action Safety quick gate
      start: POST /api/agent-services/action-safety/quick
      priceUsd: '0.01'
      useWhen: You need a deterministic preflight risk classification before shell, Git, SQL, infrastructure, or deployment work.
    - name: Agent Action Safety complete workflow
      start: POST /api/agent-services/action-safety/run
      priceUsd: '0.25'
      useWhen: You need scoring, conditional review triage, execution evidence, status, and a signed receipt.
    - name: Agent spend assurance
      start: POST /api/agent-services/payment-policy/decide
      useWhen: You need to validate a proposed x402 payment against amount, asset, network, recipient, and buyer policy before signing.
    selectionRules:
    - Use quick for a low-cost preflight; use run when an auditable end-to-end record is required.
    - Use focused component endpoints only when the caller already owns workflow orchestration.
    - A review recommendation is not a claim that a human approved the action.
    payment:
      protocol: x402
      network: Base
      asset: USDC
      pricingUrl: https://hermesplant.com/pricing
      errorsUrl: https://hermesplant.com/docs/api/errors
    proof:
      manifest: https://hermesplant.com/.well-known/x402
      agentCard: https://hermesplant.com/.well-known/agent.json
      changelog: https://hermesplant.com/changelog
servers:
- url: https://hermesplant.com
tags:
- name: Email
paths:
  /api/agent-services/emailguard/validate:
    post:
      summary: EmailGuard
      description: 'Email validation API for AI agents. Validates one email per call: RFC 5322 syntax, disposable and temporary domain detection, role-based address, free-provider classification, typo suggestion (gnail.com -> gmail.com), plus-alias normalization to canonical form, and a deliverability score with per-rule evidence. Deterministic - the same record always gets the same answer - no data feed, no network calls. Loop it over your contact list to validate, dedupe, and normalize every record. Signed response receipt included.'
      operationId: emailguard_validate
      tags:
      - Email
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.02'
        protocols:
        - x402: {}
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                email:
                  type: string
                  description: The email address to validate and score.
                name:
                  type: string
                  description: Optional contact name associated with the email.
                domain:
                  type: string
                  description: Optional explicit domain hint (usually derived from email).
                mxPresent:
                  type: boolean
                  description: Caller-supplied hint whether the domain has MX records. Never performs DNS itself.
              required:
              - email
            example:
              email: alice+work@gnail.com
              name: Alice Example
              mxPresent: true
      responses:
        '200':
          description: EmailGuard result
          content:
            application/json:
              schema:
                type: object
              example:
                valid: true
                deliverabilityScore: 55
                riskLevel: medium
                normalized:
                  localPart: alice
                  domain: gnail.com
                  canonical: alice@gnail.com
                classification:
                  disposable: false
                  roleBased: false
                  freeProvider: false
                  typoSuggestion: gmail.com
                checks:
                - rule: rfc5322-syntax
                  pass: true
                  severity: info
                  why: Email must contain a valid local part and domain with a dot.
                  evidence: parsed local=alice domain=gnail.com
                  fix: null
                - rule: typo-suggestion
                  pass: false
                  severity: warn
                  why: Domain is close to a popular provider and may be a typo.
                  evidence: input domain="gnail.com" suggestion="gmail.com"
                  fix: Use alice@gmail.com instead.
        '400':
          description: Invalid request
        '402':
          description: Payment required - x402 challenge in PAYMENT-REQUIRED header
          headers:
            PAYMENT-REQUIRED:
              schema:
                type: string
              description: Base64-encoded x402 payment challenge
        '503':
          description: x402 not configured
components:
  securitySchemes:
    oauth2:
      type: oauth2
      description: Register at POST /api/auth/register, then obtain a token from POST /api/auth/token using client_credentials.
      flows:
        clientCredentials:
          tokenUrl: https://hermesplant.com/api/auth/token
          scopes:
            catalog:read: Read the product catalog
            checkout:create: Start checkout sessions
            billing:manage: Open Stripe billing portal for subscribers
    assuranceBearer:
      type: http
      scheme: bearer
      description: Organization-scoped Hermes Plant bearer token. A signed-in organization session is also accepted by the application.
externalDocs:
  description: API documentation, error contract, pricing, and changelog
  url: https://hermesplant.com/docs/api