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OpenAPI Specification

openapi: 3.2.0
info:
  title: DripMetrics On Chain API
  version: 1.0.0
  description: DripMetricsAI provides on-demand crypto market microstructure, risk, prediction-market, Hyperliquid, and on-chain metrics. Paid endpoints use x402 (USDC on Base or USDG on Robinhood Chain) and return structured JSON without subscriptions or API keys. Also available over MCP (Streamable HTTP) at https://mcp.dripmetrics.ai/mcp with free discovery tools.
  x-mcp: https://mcp.dripmetrics.ai/mcp
  x-guidance: 'Use /openapi.json for discovery. Routes with x-payment-info are x402-paid resources: first call the endpoint without PAYMENT-SIGNATURE to receive a 402 challenge, then retry with a valid x402 v2 PAYMENT-SIGNATURE. Routes with security: [] are public discovery or health routes and should not be probed for payment.'
  contact:
    email: drip@dripmetrics.ai
    url: https://dripmetrics.ai/
servers:
- url: https://api.dripmetrics.ai
tags:
- name: On-chain
paths:
  /metrics/onchain/stablecoin-flow:
    get:
      operationId: getOnchainStablecoinFlow
      summary: Compute on-chain stablecoin-flow
      description: Computes a DefiLlama-derived on-chain metric. Invalid or unsupported requests fail before payment.
      tags:
      - On-chain
      parameters:
      - name: chain
        in: query
        required: true
        description: DefiLlama chain slug.
        schema:
          type: string
          example: base
      - name: window
        in: query
        required: true
        description: Lookback window.
        schema:
          type: string
          enum:
          - 1d
          - 7d
          - 30d
          - 90d
      security:
      - x402: []
      x-payment-info:
        price:
          fixed:
            mode: fixed
            currency: USD
            amount: '0.05'
        protocols:
        - x402: {}
      x-dripmetrics-paid: true
      x-x402:
        priceUsd: '0.05'
        asset: USDC
        network: eip155:8453
        scheme: exact
        paymentOptions:
        - network: eip155:8453
          asset: USDC
          scheme: exact
        - network: eip155:4663
          asset: USDG
          scheme: exact
      responses:
        '200':
          description: Successful paid response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OnchainMetricResult'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '422':
          $ref: '#/components/responses/MetricNotComputable'
        '503':
          $ref: '#/components/responses/UpstreamUnavailable'
  /metrics/onchain/tvl-momentum:
    get:
      operationId: getOnchainTvlMomentum
      summary: Compute on-chain tvl-momentum
      description: Computes a DefiLlama-derived on-chain metric. Invalid or unsupported requests fail before payment.
      tags:
      - On-chain
      parameters:
      - name: chain
        in: query
        required: false
        description: DefiLlama chain slug. Provide exactly one of chain or protocol.
        schema:
          type: string
          example: base
      - name: protocol
        in: query
        required: false
        description: DefiLlama protocol slug. Provide exactly one of chain or protocol.
        schema:
          type: string
          example: uniswap
      - name: window
        in: query
        required: true
        description: Lookback window.
        schema:
          type: string
          enum:
          - 1d
          - 7d
          - 30d
          - 90d
      security:
      - x402: []
      x-payment-info:
        price:
          fixed:
            mode: fixed
            currency: USD
            amount: '0.05'
        protocols:
        - x402: {}
      x-dripmetrics-paid: true
      x-x402:
        priceUsd: '0.05'
        asset: USDC
        network: eip155:8453
        scheme: exact
        paymentOptions:
        - network: eip155:8453
          asset: USDC
          scheme: exact
        - network: eip155:4663
          asset: USDG
          scheme: exact
      responses:
        '200':
          description: Successful paid response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OnchainMetricResult'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '422':
          $ref: '#/components/responses/MetricNotComputable'
        '503':
          $ref: '#/components/responses/UpstreamUnavailable'
  /metrics/onchain/protocol-fee-yield:
    get:
      operationId: getOnchainProtocolFeeYield
      summary: Compute on-chain protocol-fee-yield
      description: Computes a DefiLlama-derived on-chain metric. Invalid or unsupported requests fail before payment.
      tags:
      - On-chain
      parameters:
      - name: protocol
        in: query
        required: true
        description: DefiLlama protocol slug.
        schema:
          type: string
          example: uniswap
      - name: window
        in: query
        required: true
        description: Lookback window.
        schema:
          type: string
          enum:
          - 7d
          - 30d
          - 90d
      security:
      - x402: []
      x-payment-info:
        price:
          fixed:
            mode: fixed
            currency: USD
            amount: '0.05'
        protocols:
        - x402: {}
      x-dripmetrics-paid: true
      x-x402:
        priceUsd: '0.05'
        asset: USDC
        network: eip155:8453
        scheme: exact
        paymentOptions:
        - network: eip155:8453
          asset: USDC
          scheme: exact
        - network: eip155:4663
          asset: USDG
          scheme: exact
      responses:
        '200':
          description: Successful paid response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OnchainMetricResult'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '422':
          $ref: '#/components/responses/MetricNotComputable'
        '503':
          $ref: '#/components/responses/UpstreamUnavailable'
  /metrics/onchain/dex-efficiency:
    get:
      operationId: getOnchainDexEfficiency
      summary: Compute on-chain dex-efficiency
      description: Computes a DefiLlama-derived on-chain metric. Invalid or unsupported requests fail before payment.
      tags:
      - On-chain
      parameters:
      - name: chain
        in: query
        required: false
        description: DefiLlama chain slug. Provide exactly one of chain or protocol.
        schema:
          type: string
          example: base
      - name: protocol
        in: query
        required: false
        description: DefiLlama protocol slug. Provide exactly one of chain or protocol.
        schema:
          type: string
          example: uniswap
      - name: window
        in: query
        required: true
        description: Lookback window.
        schema:
          type: string
          enum:
          - 7d
          - 30d
          - 90d
      security:
      - x402: []
      x-payment-info:
        price:
          fixed:
            mode: fixed
            currency: USD
            amount: '0.05'
        protocols:
        - x402: {}
      x-dripmetrics-paid: true
      x-x402:
        priceUsd: '0.05'
        asset: USDC
        network: eip155:8453
        scheme: exact
        paymentOptions:
        - network: eip155:8453
          asset: USDC
          scheme: exact
        - network: eip155:4663
          asset: USDG
          scheme: exact
      responses:
        '200':
          description: Successful paid response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/OnchainMetricResult'
        '400':
          $ref: '#/components/responses/BadRequest'
        '402':
          $ref: '#/components/responses/PaymentRequired'
        '422':
          $ref: '#/components/responses/MetricNotComputable'
        '503':
          $ref: '#/components/responses/UpstreamUnavailable'
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
        metric:
          type: string
        components:
          type: object
          additionalProperties: true
      required:
      - error
      additionalProperties: true
    OnchainMetricResult:
      type: object
      properties:
        metric:
          type: string
          enum:
          - stablecoin-flow
          - tvl-momentum
          - protocol-fee-yield
          - dex-efficiency
        chain:
          type: string
        protocol:
          type: string
        targetType:
          type: string
          enum:
          - chain
          - protocol
        target:
          type: string
        window:
          type: string
          enum:
          - 1d
          - 7d
          - 30d
          - 90d
        value:
          type: number
        unit:
          type: string
        components:
          type: object
          additionalProperties: true
        computedAt:
          type: string
          format: date-time
      required:
      - metric
      - window
      - value
      - unit
      - components
      - computedAt
      additionalProperties: true
  responses:
    UpstreamUnavailable:
      description: Upstream data source unavailable or insufficient.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    PaymentRequired:
      description: x402 payment required. Programmatic clients should read payment requirements and retry with a valid PAYMENT-SIGNATURE header.
      headers:
        PAYMENT-REQUIRED:
          description: Base64-encoded x402 v2 payment requirements.
          schema:
            type: string
        PAYMENT-RESPONSE:
          description: Base64-encoded x402 payment response after verification or settlement.
          schema:
            type: string
      content:
        application/json:
          schema:
            type: object
            additionalProperties: true
    MetricNotComputable:
      description: Metric could not be computed from available data.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Invalid request.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    x402:
      type: apiKey
      in: header
      name: PAYMENT-SIGNATURE
      description: x402 v2 payment signature header supplied after reading the 402 PAYMENT-REQUIRED response.