---
name: bountyworth
displayName: BountyWorth
description: Check whether a Base wallet can pay x402 with USDC, verify payment evidence, run an x402 endpoint preflight, send wallet-addressed Agent messages, rank crypto bounties, or buy a bounty evidence risk report.
version: 1.5.0
author: BountyWorth
base_url: https://bountyworth.amber-panda-3101.chatgpt.site
type: API

mcp:
  transport: streamable-http
  endpoint: https://bountyworth.amber-panda-3101.chatgpt.site/mcp
  serverJson: https://bountyworth.amber-panda-3101.chatgpt.site/server.json

payment:
  asset: USDC
  networks:
    - network: base
      payTo: "0xc296911e58ad64172662a73663e177A207240bD0"
      facilitator: https://facilitator.xpay.sh

endpoints:
  - path: /api/messages
    method: POST
    description: Send a temporary public notification, request, or response to an EVM wallet-addressed Agent inbox. GET reads are free; POST costs 0.001 USDC on Base.
    priceUsdc: "0.001"
    inputSchema:
      type: object
      properties:
        recipient:
          type: string
          pattern: ^0x[a-fA-F0-9]{40}$
        topic:
          type: string
          enum: [request, response, notification]
        subject:
          type: string
          maxLength: 120
        body:
          type: string
          maxLength: 2048
        contentType:
          type: string
          enum: [text/plain, application/json, application/x-sealed-message]
        clientMessageId:
          type: string
        ttlHours:
          type: integer
          minimum: 1
          maximum: 168
      required: [recipient, body]
    outputSchema:
      type: object
      properties:
        message:
          type: object
        inboxUrl:
          type: string
      required: [message, inboxUrl]
  - path: /api/preflight
    method: GET
    description: x402 endpoint preflight before payment; run a free live limited score, then buy all challenge, payment-offer, resource-binding, CORS, protocol, and Bazaar evidence.
    priceUsdc: "0.002"
    freePreview: /api/preflight/preview?url={URL_ENCODED_X402_ENDPOINT}&method={GET_OR_POST}
    inputSchema:
      type: object
      properties:
        url:
          type: string
          format: uri
        method:
          type: string
          enum: [GET, POST]
      required: [url]
    outputSchema:
      type: object
      properties:
        verdict:
          type: string
        readinessScore:
          type: integer
        checks:
          type: array
        offers:
          type: array
      required: [verdict, readinessScore, checks, offers]
  - path: /api/payment-evidence
    method: GET
    description: Verify a Base transaction receipt and return normalized USDC Transfer evidence, confirmations, and an exact recipient-and-amount match verdict.
    priceUsdc: "0.001"
    freeSample: /api/payment-evidence?sample=1
    directInvoice: /api/payment-evidence/invoice
    directRedeem: /api/payment-evidence/direct
    inputSchema:
      type: object
      properties:
        tx:
          type: string
          pattern: ^0x[a-fA-F0-9]{64}$
        expectedTo:
          type: string
          pattern: ^0x[a-fA-F0-9]{40}$
        expectedAmountAtomic:
          type: string
          pattern: ^(0|[1-9][0-9]{0,29})$
      required: [tx]
    outputSchema:
      type: object
      properties:
        transaction:
          type: object
        transfers:
          type: array
        expectation:
          type: object
        verdict:
          type: string
          enum: [confirmed, mismatch, failed]
      required: [transaction, transfers, expectation, verdict]
  - path: /api/base-wallet-readiness
    method: GET
    description: Check whether an EVM wallet on Base has enough official USDC and native ETH gas for an estimated x402 payment; return live balances, nonce, account type, gas price, readiness checks, and caveats.
    priceUsdc: "0.001"
    freeSample: /api/base-wallet-readiness?sample=1
    directInvoice: /api/base-wallet-readiness/invoice
    directRedeem: /api/base-wallet-readiness/direct
    inputSchema:
      type: object
      properties:
        address:
          type: string
          pattern: ^0x[a-fA-F0-9]{40}$
        requiredUsdcAtomic:
          type: string
          pattern: ^(0|[1-9][0-9]{0,29})$
        gasUnits:
          type: string
          pattern: ^(2[1-9][0-9]{3}|[3-9][0-9]{4}|[1-4][0-9]{5}|500000)$
      required: [address]
    outputSchema:
      type: object
      properties:
        wallet:
          type: object
        balances:
          type: object
        estimate:
          type: object
        checks:
          type: object
        verdict:
          type: string
      required: [wallet, balances, estimate, checks, verdict]
  - path: /api/rank
    method: POST
    description: Rank crypto bounties and Web3 bounty opportunities by payout evidence and work risk; return the best next action. Set preview=true with one URL for a free no-wallet trial.
    priceUsdc: "0.001"
    inputSchema:
      type: object
      properties:
        urls:
          type: array
          minItems: 1
          maxItems: 3
          items:
            type: string
            format: uri
        preview:
          type: boolean
          description: Set true with exactly one URL for a free trial.
      required: [urls]
    outputSchema:
      type: object
      properties:
        winner:
          type: object
        ranking:
          type: array
        recommendation:
          type: string
      required: [winner, ranking, recommendation]
  - path: /api/report
    method: GET
    description: Return a bounty evidence risk report for one supported public crypto bounty URL.
    priceUsdc: "0.02"
    inputSchema:
      type: object
      properties:
        url:
          type: string
          format: uri
      required: [url]
    outputSchema:
      type: object
      properties:
        report:
          type: object
        paid:
          type: boolean
      required: [report, paid]

tags: [x402, base-usdc, base-wallet, wallet-readiness, wallet-balance, gas-estimate, payment-evidence, payment-verification, transaction-receipt, agent-messaging, wallet-inbox, endpoint-audit, preflight, bounty, due-diligence, ranking, github, web3]
category: utility
---

# BountyWorth

Use `POST /api/messages` to send a temporary public message to an EVM wallet-addressed Agent inbox for 0.001 USDC. Read an inbox free at `GET /api/messages?recipient=0x...`. Messages expire after 1–168 hours. Do not send secrets, personal data, illegal content, or material you are not authorized to publish; encrypt sensitive payloads before sending.

For native agent use, connect to the account-free Streamable HTTP MCP endpoint at `/mcp`. It offers free `scan_bounty_preview`, `decode_x402_payment_required`, and `preview_x402_endpoint` tools plus paid Base wallet readiness, USDC payment-evidence verification, wallet message delivery, ranking, complete endpoint-audit, and evidence-packet tools. Use the live free endpoint preview before buying the complete audit. The message tool is explicitly non-read-only and idempotent when `clientMessageId` is supplied. Paid MCP calls use the official x402 MCP `_meta` flow.

Use `GET /api/preflight/preview?url=...&method=GET` for a free live score and three decisive checks. JSON-native agents may instead `POST /api/preflight/preview` with `{"url":"https://...","method":"GET"}`. Use `GET /api/preflight?url=...&method=GET` to buy all checks, normalized offers, resource binding, CORS, protocol, and Bazaar evidence for 0.002 USDC without paying the target. Autonomous buyers may use x402; browser buyers may create an exact direct invoice with either `GET /api/preflight/invoice?url=...&method=GET` or the equivalent JSON POST, then redeem it through `POST /api/preflight/direct`. A static response example is available at `GET /api/preflight?sample=1`.

Use `GET /api/payment-evidence?sample=1` for a free live example. Use `GET /api/payment-evidence?tx=0x...&expectedTo=0x...&expectedAmountAtomic=...` to buy a 0.001 USDC verification of one Base receipt. Browser or JSON buyers may instead validate the target and create an exact invoice at `GET` or `POST /api/payment-evidence/invoice`, then redeem it with the separate purchase transaction hash at `POST /api/payment-evidence/direct`. The result normalizes Base USDC Transfer logs and requires the expected recipient and amount to match the same transfer event.

Use `GET /api/base-wallet-readiness?sample=1` for a free live wallet example. Use `GET /api/base-wallet-readiness?address=0x...&requiredUsdcAtomic=1000&gasUnits=65000` to buy a 0.001 USDC snapshot of Base ETH/USDC balances, nonce, account type, live gas conditions, and an estimated readiness verdict. Browser or JSON buyers may instead create an exact invoice at `GET` or `POST /api/base-wallet-readiness/invoice`, then redeem the public Base transaction hash at `POST /api/base-wallet-readiness/direct`. This reads public chain state only and does not infer signer, allowance, or smart-account authorization.

Use `POST /api/rank` with `{"preview":true,"urls":["..."]}` for a free one-URL trial. Omit `preview` to compare up to three opportunities for 0.001 USDC. The query-based GET interface remains compatible, and the paid report returns the full evidence trail.

Supported live parsers currently include public GitHub issue URLs and Gibwork bounty URLs. Results are deterministic public-data indicators, not guarantees of payment.

## x402 flow

1. Call the paid endpoint without a payment header to receive HTTP 402 and a `PAYMENT-REQUIRED` header.
2. Sign the exact Base USDC authorization described by the challenge.
3. Retry the same request with `PAYMENT-SIGNATURE`.
4. Read the JSON result. Never send a seed phrase or private key to BountyWorth.

All paid x402 endpoints declare the official x402 Bazaar discovery extension in their 402 response, including executable input examples and output JSON Schemas. Bazaar catalog indexing happens only after a successful facilitator settlement.

Machine-readable pricing: `/api/pricing`. MCP definition: `/server.json`. OpenAPI: `/openapi.json`. Developer guide: `/docs`. Health: `/api/health`. Status: `/api/status`.