Hilt

Hilt Solana Transaction Evidence API

A public pay-per-request x402 V2 resource on www.hilt.so (0.05 USDC per request, Solana USDC): POST /v1/solana/transaction-evidence returns signers, invoked programs, SOL and token balance changes, parsed transfers, finality, fee and timestamp for one finalized Solana mainnet transaction. Its own OpenAPI 3.1.0 declares the PAYMENT-REQUIRED 402 header and PAYMENT-RESPONSE 200 header plus x-payment-info. Announced 27 August 2026 as one of two live payment paths for wallet-capable agents.

Documentation GitHub OpenAPI

Operations 1

POST /v1/solana/transaction-evidence Fetch finalized Solana transaction evidence #

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OpenAPI Specification

# Faithful YAML rendering of the provider-published spec saved verbatim at openapi/_original/hilt-so-transaction-evidence-openapi.json
# fetched 2026-09-19 from the URL in info.x-source-url of that file's sibling manifest; content unchanged.
openapi: 3.1.0
info:
  title: Hilt Solana Transaction Evidence API
  version: 1.0.0
  description: Pay-per-request normalized evidence for finalized Solana transactions. Payment uses x402 V2 with Solana USDC.
servers:
- url: https://www.hilt.so
paths:
  /v1/solana/transaction-evidence:
    post:
      operationId: getSolanaTransactionEvidence
      summary: Fetch finalized Solana transaction evidence
      description: Returns signers, invoked programs, SOL and token balance changes, parsed transfers, finality status, fee, timestamp, and explicit evidence boundaries for one finalized Solana mainnet transaction.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/TransactionEvidenceRequest'
            example:
              request_id: pay-sh-probe-2026-08-26
              transaction_signature: 2Ana1pUpv2ZbMVkwF5FXapYeBEjdxDatLn7nvJkhgTSXbs59SyZSx866bXirPgj8QQVB57uxHJBG1YFvkRbFj4T
      responses:
        '200':
          description: Finalized transaction evidence
          headers:
            PAYMENT-RESPONSE:
              description: x402 V2 settlement response when this request settled a payment.
              schema:
                type: string
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/TransactionEvidenceResponse'
        '402':
          description: Solana USDC payment required
          headers:
            PAYMENT-REQUIRED:
              required: true
              description: Base64-encoded x402 V2 payment requirement.
              schema:
                type: string
        '404':
          description: Transaction not found at finalized commitment
        '422':
          description: Invalid request
        '502':
          description: Solana evidence provider unavailable
      x-payment-info:
        price:
          mode: fixed
          currency: USD
          amount: '0.050000'
        protocols:
        - x402: {}
components:
  schemas:
    TransactionEvidenceRequest:
      type: object
      additionalProperties: false
      required:
      - request_id
      - transaction_signature
      properties:
        request_id:
          type: string
          minLength: 8
          maxLength: 120
          pattern: ^[A-Za-z0-9._:-]{8,120}$
          description: Fresh retry key for one paid lookup. Reuse it only when retrying that same request.
        transaction_signature:
          type: string
          description: Solana transaction signature to inspect at finalized commitment.
    TransactionEvidenceResponse:
      type: object
      required:
      - network
      - signature
      - status
      - slot
      - block_time
      - fee_lamports
      - fee_sol
      - signers
      - program_ids
      - native_balance_changes
      - token_balance_changes
      - parsed_transfers
      - warnings
      - boundary
      properties:
        network:
          type: string
          const: solana:mainnet
        signature:
          type: string
        status:
          type: string
          enum:
          - finalized_success
          - finalized_failed
        slot:
          type: integer
        block_time:
          type:
          - string
          - 'null'
          format: date-time
        fee_lamports:
          type: integer
        fee_sol:
          type: string
        signers:
          type: array
          items:
            type: string
        program_ids:
          type: array
          items:
            type: string
        native_balance_changes:
          type: array
          items:
            type: object
        token_balance_changes:
          type: array
          items:
            type: object
        parsed_transfers:
          type: array
          items:
            type: object
        warnings:
          type: array
          items:
            type: string
        boundary:
          type: string