Locale File Diff

Compare two versions of a base locale and report which translations went stale. A base string edited without its translations being edited leaves every locale confidently wrong, nothing in the translation file marks it, and the diff is the only place it is visible. Also reports a removed key, where anything still referencing it shows the key in the interface; translations still carrying a removed key; and, per locale, how many of the new keys are outstanding.

OtherLiveeip155:8453Exactvia cdp
InternationalisationChange detectionTranslation freshnessRelease gateDeveloper tooling
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$25.35
Verified settled volume
256 settlements proven x402 by their on-chain EIP-3009 marker.
$0.170
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-04 08:47Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x25e8245f07d5e4873987293dad666afbe56a9608

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.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
      "amount": "170000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://api.zfinia.com/x402/v1/locale-file-diff",
    "tags": [
      "internationalisation",
      "change detection",
      "translation freshness",
      "release gate",
      "developer tooling"
    ],
    "mimeType": "application/json",
    "description": "Compare two versions of a base locale and report which translations went stale. A base string edited without its translations being edited leaves every locale confidently wrong, nothing in the translation file marks it, and the diff is the only place it is visible. Also reports a removed key, where anything still referencing it shows the key in the interface; translations still carrying a removed key; and, per locale, how many of the new keys are outstanding.",
    "serviceName": "Locale File Diff"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "body": {
            "after": {
              "app": {
                "title": "Dashboard",
                "greeting": "Welcome back, {name}"
              },
              "errors": {
                "retry": "Try again",
                "generic": "Something went wrong"
              },
              "checkout": {
                "submit": "Pay now"
              }
            },
            "before": {
              "app": {
                "title": "Dashboard",
                "greeting": "Hello, {name}"
              },
              "banner": {
                "promo": "Half price this week"
              },
              "errors": {
                "retry": "Try again",
                "generic": "Something went wrong"
              }
            },
            "translations": [
              {
                "locale": "de",
                "messages": {
                  "app": {
                    "title": "Übersicht",
                    "greeting": "Hallo, {name}"
                  },
                  "banner": {
                    "promo": "Diese Woche halber Preis"
                  },
                  "errors": {
                    "retry": "Erneut",
                    "generic": "Fehler"
                  }
                }
              }
            ]
          },
          "type": "http",
          "method": "POST",
          "bodyType": "json"
        },
        "output": {
          "type": "json",
          "example": {
            "limits": {
              "maxKeys": 50000,
              "maxLocales": 60,
              "maxFindings": 500,
              "maxFileBytes": 2097152,
              "maxValueLength": 32768
            },
            "passed": false,
            "complete": false,
            "findings": [
              {
                "key": "banner.promo",
                "code": "KEY_REMOVED",
                "detail": "banner.promo is gone from the base. Every translation of it is now dead weight, and anything still referencing it shows the key."
              },
              {
                "key": "app.greeting",
                "code": "BASE_TEXT_CHANGED",
                "detail": "app.greeting changed in the base. Every translation of it is now a translation of the previous text."
              },
              {
                "key": "app.greeting",
                "code": "TRANSLATION_NOW_STALE",
                "detail": "de still has the previous translation of app.greeting, whose base text changed. Nothing in the file marks it, so it reads as translated and says the old thing.",
                "locale": "de"
              }
            ],
            "unchanged": false,
            "added_keys": [
              "checkout.submit"
            ],
            "request_id": "example-request",
            "service_id": "locale_file_diff",
            "assumptions": [
              "A changed base string is the central finding: every translation of it is now a translation of the previous text, nothing in the translation file marks that, and the diff is the only place it is visibl...",
              "An added key is noted rather than found, because it breaks nothing that already worked, while the translations missing it are reported per locale as outstanding work.",
              "A removed key is a finding rather than a note, because anything still referencing it shows the key in the interface."
            ],
            "limitations": [
              "The two base versions and the translations supplied. Whether a base change was significant enough to need retranslating is a judgement this does not make.",
              "unchanged is true only when the two base versions were identical and nothing was left undetermined."
            ],
            "observed_at": "2026-10-02T00:00:00.000Z",
            "changed_keys": [
              "app.greeting"
            ],
            "not_examined": [
              "KEY_ADDED: checkout.submit is new, so every locale is missing it until it is translated.",
              "TRANSLATION_ORPHANED: de still has banner.promo, which the base no longer defines."
            ],
            "removed_keys": [
              "banner.promo"
            ],
            "finding_count": 4,
            "added_key_count": 1,
            "after_key_count": 5,
            "service_version": "1.0.0",
            "before_key_count": 5,
            "findings_by_code": {
              "KEY_REMOVED": 1,
              "BASE_TEXT_CHANGED": 1,
              "TRANSLATION_NOW_STALE": 1,
              "NEW_KEYS_NOT_TRANSLATED": 1
            },
            "changed_key_count": 1,
            "removed_key_count": 1,
            "translation_locale_count": 1
          }
        }
      },
      "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": [
                  "before",
                  "after"
                ],
                "properties": {
                  "after": {
                    "type": [
                      "object",
                      "string"
                    ]
                  },
                  "before": {
                    "type": [
                      "object",
                      "string"
                    ]
                  },
                  "translations": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "locale",
                        "messages"
                      ],
                      "properties": {
                        "locale": {
                          "type": "string",
                          "maxLength": 35
                        },
                        "messages": {
                          "type": [
                            "object",
                            "string"
                          ]
                        }
                      },
                      "additionalProperties": false
                    },
                    "maxItems": 60,
                    "minItems": 1
                  }
                },
                "additionalProperties": false
              },
              "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"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Accepts

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

0.17USDC≈ $0.17 USD
on Base · exact scheme

Pay 0.17 USDC on Base to 0x25e8…a9608. The signed payment is good for 1 minute.

USD Coin contract
0x8335…02913
Payment window
1 minute
As published
170000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
    "amount": "170000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "after": {
            "app": {
              "title": "Dashboard",
              "greeting": "Welcome back, {name}"
            },
            "errors": {
              "retry": "Try again",
              "generic": "Something went wrong"
            },
            "checkout": {
              "submit": "Pay now"
            }
          },
          "before": {
            "app": {
              "title": "Dashboard",
              "greeting": "Hello, {name}"
            },
            "banner": {
              "promo": "Half price this week"
            },
            "errors": {
              "retry": "Try again",
              "generic": "Something went wrong"
            }
          },
          "translations": [
            {
              "locale": "de",
              "messages": {
                "app": {
                  "title": "Übersicht",
                  "greeting": "Hallo, {name}"
                },
                "banner": {
                  "promo": "Diese Woche halber Preis"
                },
                "errors": {
                  "retry": "Erneut",
                  "generic": "Fehler"
                }
              }
            }
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "limits": {
            "maxKeys": 50000,
            "maxLocales": 60,
            "maxFindings": 500,
            "maxFileBytes": 2097152,
            "maxValueLength": 32768
          },
          "passed": false,
          "complete": false,
          "findings": [
            {
              "key": "banner.promo",
              "code": "KEY_REMOVED",
              "detail": "banner.promo is gone from the base. Every translation of it is now dead weight, and anything still referencing it shows the key."
            },
            {
              "key": "app.greeting",
              "code": "BASE_TEXT_CHANGED",
              "detail": "app.greeting changed in the base. Every translation of it is now a translation of the previous text."
            },
            {
              "key": "app.greeting",
              "code": "TRANSLATION_NOW_STALE",
              "detail": "de still has the previous translation of app.greeting, whose base text changed. Nothing in the file marks it, so it reads as translated and says the old thing.",
              "locale": "de"
            }
          ],
          "unchanged": false,
          "added_keys": [
            "checkout.submit"
          ],
          "request_id": "example-request",
          "service_id": "locale_file_diff",
          "assumptions": [
            "A changed base string is the central finding: every translation of it is now a translation of the previous text, nothing in the translation file marks that, and the diff is the only place it is visibl...",
            "An added key is noted rather than found, because it breaks nothing that already worked, while the translations missing it are reported per locale as outstanding work.",
            "A removed key is a finding rather than a note, because anything still referencing it shows the key in the interface."
          ],
          "limitations": [
            "The two base versions and the translations supplied. Whether a base change was significant enough to need retranslating is a judgement this does not make.",
            "unchanged is true only when the two base versions were identical and nothing was left undetermined."
          ],
          "observed_at": "2026-10-02T00:00:00.000Z",
          "changed_keys": [
            "app.greeting"
          ],
          "not_examined": [
            "KEY_ADDED: checkout.submit is new, so every locale is missing it until it is translated.",
            "TRANSLATION_ORPHANED: de still has banner.promo, which the base no longer defines."
          ],
          "removed_keys": [
            "banner.promo"
          ],
          "finding_count": 4,
          "added_key_count": 1,
          "after_key_count": 5,
          "service_version": "1.0.0",
          "before_key_count": 5,
          "findings_by_code": {
            "KEY_REMOVED": 1,
            "BASE_TEXT_CHANGED": 1,
            "TRANSLATION_NOW_STALE": 1,
            "NEW_KEYS_NOT_TRANSLATED": 1
          },
          "changed_key_count": 1,
          "removed_key_count": 1,
          "translation_locale_count": 1
        }
      }
    },
    "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": [
                "before",
                "after"
              ],
              "properties": {
                "after": {
                  "type": [
                    "object",
                    "string"
                  ]
                },
                "before": {
                  "type": [
                    "object",
                    "string"
                  ]
                },
                "translations": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "locale",
                      "messages"
                    ],
                    "properties": {
                      "locale": {
                        "type": "string",
                        "maxLength": 35
                      },
                      "messages": {
                        "type": [
                          "object",
                          "string"
                        ]
                      }
                    },
                    "additionalProperties": false
                  },
                  "maxItems": 60,
                  "minItems": 1
                }
              },
              "additionalProperties": false
            },
            "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
2026-10-04 08:47Z
Last indexed by Roundhouse
2026-10-05 06:10Z
Last enriched (probe, favicon, geo)
2026-10-05 00:45Z
x402 version
2
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

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 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 Locale File Diff 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=Locale%20File%20Diff'
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.zfinia.com/x402/v1/locale-file-diff, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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