api.pennyforge.org

Name: api.pennyforge.org
Price: 0.01 USDC
Availability: InStock

Paste a wallet address and the chain you are about to send on. SendCheck checks the EIP-55 checksum, whether the address is actually active on that network, EOA or contract, native + USDC + USDT balances — and flags the USDT-instead-of-USDC trap. Every check is shareable: the link re-verifies live in the viewer

OtherLiveeip155:8453Exactvia wellknown:sendcheck-x402.pennyforge.workers.dev

https://api.pennyforge.org/diligence/live

Settlements · 30d

43↓ 90%

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.

$0.50

Verified settled volume

43 settlements proven x402 by their on-chain EIP-3009 marker.

$0.010

Listed price

As published in the catalog. Always read the live 402 before paying.

—

Calls · 30d

Upstream's own call count for this endpoint, not ours.

—

Unique payers · 30d

Never called

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x9504A5939AB5be2B2B1F8beA7D7ebeCcd96c485D

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD

on Base · exact scheme

Pay 0.01 USDC on Base to 0x9504…c485D. The signed payment is good for 1 minute.

Paid to: 0x9504…c485D
USD Coin contract: 0x8335…02913
Payment window: 1 minute
As published: 10000 smallest units
Buys: LIVE x402 directory diligence digest: the free /diligence snapshot recomputed ON DEMAND from x402-list.com's public API — top-50 services by measured 30-day settlements (price percentile, shared-payout, compliance grade, 30d uptime, verification, 90-day settlement-address rotations) + the complete 90-day payTo rotator list. CC BY 4.0. No body (plain GET). 5xx skips your payment. Freshness = x402-list's probe cadence (~15 min), not an oracle.
Returns: application/json

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "payTo": "0x9504A5939AB5be2B2B1F8beA7D7ebeCcd96c485D",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "description": "LIVE x402 directory diligence digest: the free /diligence snapshot recomputed ON DEMAND from x402-list.com's public API — top-50 services by measured 30-day settlements (price percentile, shared-payout, compliance grade, 30d uptime, verification, 90-day settlement-address rotations) + the complete 90-day payTo rotator list. CC BY 4.0. No body (plain GET). 5xx skips your payment. Freshness = x402-list's probe cadence (~15 min), not an oracle.",
    "outputSchema": {
      "type": "http",
      "input": {
        "body": null,
        "method": "GET"
      },
      "output": {
        "meta": "{endpoint, price_usd, free_companion, freshness, as_of}",
        "title": "…",
        "source": "{provider, license CC-BY-4.0, cite_as}",
        "top_50": "[50 rows: slug, name, url, min_price_usd, price_category_percentile, compliance_grade, uptime_30d_pct, verified, shared_payout, shared_with, settlements_30d, volume_usd_30d, unique_buyers_30d, payto_rotations_90d, listed, status]",
        "summary": "{services_listed, online, verified, shared_payout, measured_30d, payto_rotations_90d_total, services_with_rotation_90d, median_price_usd}",
        "generated_at": "ISO timestamp of THIS computation",
        "rotators_90d": "[{slug, name, payto_rotations} sorted desc]"
      }
    },
    "maxTimeoutSeconds": 60
  }
]

Provenance

Seen in the source catalog: —
Last indexed by Roundhouse: 2026-09-21 01:15Z
Last enriched (probe, favicon, geo): 2026-09-21 01:45Z
x402 version: —
Max timeout: 60s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service api.pennyforge.org and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=api.pennyforge.org'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://api.pennyforge.org/diligence/live, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.