Hermes Plant Agent Spend 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: agent-spend
paths:
  /api/agent-services/spend-assurance/run:
    post:
      summary: Agent Spend Assurance
      description: One signed preflight combining caller-supplied wallet risk signals, Payment Policy challenge validation, and internal evidence binding. Unknown wallet risk requires review, not permission to pay. No external chain-intelligence or sanctions lookup, independent screening clearance, or settlement verification is supplied.
      operationId: spend_assurance
      tags:
      - agent-spend
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.25'
        protocols:
        - x402: {}
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                runId:
                  type: string
                  description: Optional caller run identifier.
                wallet:
                  type: object
                  description: 'WalletGuard context: wallet plus optional labels, sanctionsHits, exposures, transfers, and fundingSources.'
                payment:
                  type: object
                  description: 'Payment Policy input: resource, x402 challenge fields, buyer policy, and optional replay context.'
              required:
              - wallet
              - payment
            example:
              runId: run-42
              wallet:
                wallet: '0x9999999999999999999999999999999999999999'
                labels:
                - exchange:verified
              payment:
                resourceUrl: https://api.example.com/data
                method: POST
                scheme: exact
                network: eip155:8453
                amountUnits: '100000'
                payTo: '0x1111111111111111111111111111111111111111'
                buyerPolicy:
                  maxUsdPerCall: 1
      responses:
        '200':
          description: Agent Spend Assurance result
          content:
            application/json:
              schema:
                type: object
              example:
                status: assessed
                service: spend-assurance
                decision: needs_review
                allowed: false
                wallet:
                  riskScore: null
                  riskLevel: unknown
                  evidenceSource: caller_supplied_only
                  externalScreeningPerformed: false
                recommendedAction: pause_for_review
                receipt:
                  algorithm: HMAC-SHA-256
                  verifyUrl: https://hermesplant.com/api/agent-services/assurance/verify
        '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