Roundhouse AI

api.memestack.ai

Reverse image search over MemeStack's index of memes, infographics, charts and screenshots: send an image URL, get the copies and close variants we hold (whole-picture perceptual-hash match) with captions, tags and image ids, each browsable at memestack.ai/gallery/{id}. 21 sats (USDC equivalent) per call. No account or API key: the x402 (USDC on Base) or L402 (Lightning) payment is the auth.

SearchLiveeip155:8453Exactvia cdp
https://api.memestack.ai/v1/agent/reverse-search
Calls · 30d
2↑ 100%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 17 snapshots so far.
$0.36
Verified settled volume
10 settlements proven x402 by their on-chain EIP-3009 marker.
$0.017
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-17 03:48Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xa06C42DAA258595Bc773A0bF032A5Ba55939781a

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.

0.017USDC≈ $0.017 USD
on Base · exact scheme

Pay 0.017 USDC on Base to 0xa06C…9781a. The signed payment is good for 10 minutes.

Paid to
0xa06C…9781a
USD Coin contract
0x8335…02913
Payment window
10 minutes
As published
17000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0xa06C42DAA258595Bc773A0bF032A5Ba55939781a",
    "amount": "17000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 600
  }
]

Extensions

{
  "l402": {
    "info": {
      "expiry": "2026-09-17T03:58:38.000Z",
      "invoice": "lnbc210n1p42kcckpp5rxpjt6ly2glxd0arcknc3hhsae7u40ujmx3pea83cgc3pcsx9x2qsp5xa4t8ep66fe6g5v0wx4a5ahrcq45y6fcqdlq6px5unv65vvy76fqxqztgnp4qvyndeaqzman7h898jxm98dzkm0mlrsx36s93smrur7h0azyyuxc5rzjqwghf7zxvfkxq5a6sr65g0gdkv768p83mhsnt0msszapamzx2qvuxqqqqrt49lmtcqqqqqqqqqqq86qq9qcqzpuhp5gzffss4zetggc3k3qntqatvenf37k89709m3ll4mjgqewfja9h6q9qyyssq3asn070j6mxdpk8ez2hxdt5qmfewmzdumtwz2g8fpnu7xewc5txzlgq8ly8eweg5zglgfgsdalezxk6mf7sfmpuhjkgx6j56jg2laugphgnjuv",
      "macaroon": "v1:eyJ2IjoxLCJwYXltZW50X2hhc2giOiIxOTgzMjVlYmU0NTIzZTY2YmZhM2M1YTc4OGRlZjBlZTdkY2FiZjkyZDlhMjFjZjRmMWMyMzExMGUyMDYyOTk0IiwidG9vbCI6InJldmVyc2VfaW1hZ2Vfc2VhcmNoIiwicHJpY2Vfc2F0cyI6MjEsImV4cCI6MTc4OTYxNzUxOCwibm9uY2UiOiIzYWRjN2Q4ZS1mZjQxLTQzNDgtYmE0MC1iZTBjMmJmZDVhYmIiLCJ2ZXJpZnlfdXJsIjoiaHR0cHM6Ly9sbnVybC5ibGluay5zdi92ZXJpZnkvMTk4MzI1ZWJlNDUyM2U2NmJmYTNjNWE3ODhkZWYwZWU3ZGNhYmY5MmQ5YTIxY2Y0ZjFjMjMxMTBlMjA2Mjk5NCJ9.NzG7xfKbRURvsGcTQcDiIAGumVaTTZh_mkzTSXSXaEA"
    },
    "schema": {
      "type": "object",
      "properties": {
        "expiry": {
          "type": "string"
        },
        "invoice": {
          "type": "string"
        },
        "macaroon": {
          "type": "string"
        }
      },
      "description": "L402 Lightning payment offer (experimental MCP extension). Pay the bolt11 invoice, then retry with {macaroon, preimage}."
    }
  },
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "image_url": "https://example.com/meme.png"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "similar": [
            {
              "id": "3f2b6d8e-1c4a-4f0e-9b7d-2a6c8e0f1d23",
              "tags": [
                {
                  "tag": "distracted_boyfriend",
                  "name": "Distracted Boyfriend",
                  "score": 9
                }
              ],
              "caption": "Distracted boyfriend meme, labelled",
              "similarity": 87
            }
          ],
          "input_meta": {
            "phash": "a1b2c3d4e5f60718",
            "mime_type": "image/png",
            "size_bytes": 48213
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "image_url"
              ],
              "properties": {
                "image_url": {
                  "type": "string",
                  "description": "HTTPS URL or data:image/...;base64,... URL of the query image."
                }
              }
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-17 03:48Z
Last indexed by Roundhouse
2026-09-20 19:00Z
Last enriched (probe, favicon, geo)
2026-09-14 05:15Z
x402 version
2
Max timeout
600s
Liveness probe
HTTP 404
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 17 snapshots so far. 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.memestack.ai 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.memestack.ai'
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.memestack.ai/v1/agent/reverse-search, 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.