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STF-2006: Document email verification inputs - #1776
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Inline comments:
Review comments at @content/minfraud/api-documentation/requests.md:
- Line 380: Wrap the new Markdown descriptions for the email verification fields
at lines 380 and 384 to the project’s prose-width guideline, keeping the
shortcode rows intact.
Review comments at
@content/minfraud/release-notes/2026-10-09-new-email-verification-inputs.md:
- Line 3: Update the release-notes entry’s date from the placeholder to the
publication date, and rename the release-notes file to use the same YYYY-MM-DD
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Add /email/verification_time and /email/was_verification_successful to the minFraud request docs and the request examples. Add a release note for the new inputs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Looks good. Claude has some feedback. It's feedback on wording/docs rather than anything wrong. I think we could merge though.
| {{</minfraud-schema-row>}} | ||
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| {{< minfraud-schema-row key="was_verification_successful" type="request" valueType="boolean" >}} | ||
| Whether the most recent verification that the end user controls this email address was successful (e.g. by confirming a link sent to the email address). `true` if the email verification was successful, or `false` if the user failed email verification. Do not include this field if you have not performed this check. |
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Nit: the example clause is attached to "successful" instead of to "verification".
"...controls this email address was successful (e.g. by confirming a link sent to the email address)" reads as if the link confirmation describes the success. The clause gives an example of the verification method. The phone rows put the method next to the verification ("using the method named in phone_verification_method").
Suggest:
| Whether the most recent verification that the end user controls this email address was successful (e.g. by confirming a link sent to the email address). `true` if the email verification was successful, or `false` if the user failed email verification. Do not include this field if you have not performed this check. | |
| Whether the most recent verification that the end user controls this email address, for example by confirming a link sent to the email address, was successful. `true` if the email verification was successful, or `false` if the user failed email verification. Do not include this field if you have not performed this check. |
The OpenAPI spec (maxmind/openapi#7) copies this sentence, including the "e.g.", so it can take the same change.
🤖 Comment by Claude Opus 5.5.
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Given this text is as provided, we can probably leave it.
| {{</minfraud-schema-row>}} | ||
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| {{< minfraud-schema-row key="was_verification_successful" type="request" valueType="boolean" >}} | ||
| Whether the most recent verification that the end user controls this email address was successful (e.g. by confirming a link sent to the email address). `true` if the email verification was successful, or `false` if the user failed email verification. Do not include this field if you have not performed this check. |
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Minor: the row does not say what to send while a verification is pending.
With a link-based check, time passes between the moment you send the link and the moment the user clicks it. The link can also expire without a click. The row says to send false "if the user failed email verification" and to omit the field "if you have not performed this check". It does not say which rule applies to a link that is sent but not yet confirmed.
Example: a merchant sends a confirmation link at signup and scores the account_creation event before the user clicks it. The merchant can read "performed this check" as "sent the link" and send false. minFraud then sees every normal, not-yet-confirmed signup as a failed verification. This can raise risk scores and cause false positives.
Suggest: add a sentence that says what to do while the result is not known, for example "If the user has not yet completed the verification, do not include this field." Use the rule that the model expects. The phone rows have a smaller form of the same gap (a code is sent but not yet entered).
🤖 Comment by Claude Opus 5.5.
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Likewise, but maybe worth pinging Miguel?
| {{</minfraud-schema-row>}} | ||
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| {{< minfraud-schema-row key="verification_time" type="request" valueType="string" >}} | ||
| The most recent date and time a verification of the email address was attempted, if known. The string must be in the [RFC 3339](https://datatracker.ietf.org/doc/html/rfc3339) date-time format. The time must not be before 1970-01-01T00:00:00Z or more than two days in the future. For a time outside this range, MaxMind ignores the input and returns a warning. |
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Minor: the row does not say which time to send for a link-based check.
"The most recent date and time a verification of the email address was attempted" can mean the time you sent the link or the time the user clicked it. For email, these two times can be hours or days apart. For a phone code, the gap is usually minutes, so the phone rows have less of this problem.
Example: merchant A sends the time it sent the link. Merchant B sends the time the user clicked the link. The model gets inconsistent values for the same kind of event.
Suggest: state which moment the time refers to, for example "the time the user confirmed the link, or the time you sent it if the user has not confirmed it". Use the definition that the model expects.
🤖 Comment by Claude Opus 5.5.
| {{</minfraud-schema-row>}} | ||
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| {{< minfraud-schema-row key="verification_time" type="request" valueType="string" >}} | ||
| The most recent date and time a verification of the email address was attempted, if known. The string must be in the [RFC 3339](https://datatracker.ietf.org/doc/html/rfc3339) date-time format. The time must not be before 1970-01-01T00:00:00Z or more than two days in the future. For a time outside this range, MaxMind ignores the input and returns a warning. |
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Nit: "most recent" does not say relative to what.
You can score a stored transaction later with /event/time, up to one year in the past. The row does not say whether to send the verification state as of that event or as of now.
Example: a merchant scores a 6-month-old transaction and sends the current state of the email address. The verification_time is then after the event. The web service accepts any time up to two days after the current time, so it does not catch this. The model then sees information from after the event.
Suggest: add "as of the time of the event" or similar to both email rows (this line and line 386). The phone verification rows (lines 487, 493, 595, and 601) have the same wording.
🤖 Comment by Claude Opus 5.5.
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Seems likely okay as is, but I guess it could go in the above bucket too.
| {{</minfraud-schema-row>}} | ||
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| {{< minfraud-schema-row key="verification_time" type="request" valueType="string" >}} | ||
| The most recent date and time a verification of the email address was attempted, if known. The string must be in the [RFC 3339](https://datatracker.ietf.org/doc/html/rfc3339) date-time format. The time must not be before 1970-01-01T00:00:00Z or more than two days in the future. For a time outside this range, MaxMind ignores the input and returns a warning. |
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Nit: the row does not say to leave out the time when no verification was attempted.
The was_verification_successful row says "Do not include this field if you have not performed this check." The phone inputs put the same rule on phone_verification_method. The email inputs have no method field, so no email row gives this rule for verification_time.
Failure scenario: an integration that always sends a value sends a placeholder, such as 1970-01-01T00:00:00Z, when there was no verification. The web service accepts it, because the time is not before the epoch. MaxMind then records a verification attempt that did not occur.
Suggested fix: add "Do not include this field if no verification was attempted." The OpenAPI spec (maxmind/openapi#7) and the client docs copy this text, so they can follow this row.
🤖 Comment by Claude Opus 5.5.
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Seems like it should be obvious to me, but I guess we could say it. Probably in the same position as the above.
Documents the new optional
/email/verification_timeand/email/was_verification_successfulinputs in the minFraud request reference and examples, and adds a release note dated 2026-10-26, the day the web service change is deployed.Merge after that deploy and after 2026-10-26T16:00:00Z. Hugo does not build pages with a future date, so a build before that time leaves out the release note.
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