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Aleksander Sekowski profile picture

Aleksander Sekowski

creator of vastlint

Joined Joined on  github website
One purchase can create four different conversion numbers.
aleksuix profile

One purchase can create four different conversion numbers.

#analytics #backend #debugging
Comments 1
3 min read

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The URL in the tag manager is not the URL the browser fired.
aleksuix profile

The URL in the tag manager is not the URL the browser fired.

#javascript #advertising #testing
Comments
5 min read
Hash the email. Do not hash the IP. Both mistakes still return 200.
aleksuix profile

Hash the email. Do not hash the IP. Both mistakes still return 200.

#javascript #privacy #analytics
Comments
5 min read
Floodlight still needs src, type, and cat. A leftover ord=1 counts once.
aleksuix profile

Floodlight still needs src, type, and cat. A leftover ord=1 counts once.

#advertising #javascript #analytics
Comments
4 min read
Pixel Helper cannot see a Conversions API POST. A 200 is not the contract.
aleksuix profile

Pixel Helper cannot see a Conversions API POST. A 200 is not the contract.

#javascript #api #analytics
Comments
5 min read
Pixel Helper said the tag fired. Chrome Network never requested facebook.com/tr.
aleksuix profile

Pixel Helper said the tag fired. Chrome Network never requested facebook.com/tr.

#javascript #analytics #advertising
Comments
6 min read
An ARTF Mutation Can Declare ACTIVATE_DEALS and Set adjust_bid. The Envelope Still Parses.
aleksuix profile

An ARTF Mutation Can Declare ACTIVATE_DEALS and Set adjust_bid. The Envelope Still Parses.

#grpc #openrtb #adtech #ai
Comments
4 min read
The IAB's own VAST sample tags pass XSD validation, and two of them still break the spec
aleksuix profile

The IAB's own VAST sample tags pass XSD validation, and two of them still break the spec

#webdev #javascript #xml #testing
Comments
5 min read
2.2 cat Codes With Omitted cattax Validate. OpenRTB Defaults to Taxonomy 1.0.
aleksuix profile

2.2 cat Codes With Omitted cattax Validate. OpenRTB Defaults to Taxonomy 1.0.

#openrtb #adtech #advertising #javascript
Comments
4 min read
MCP validate_vast Passes the XML the Agent Pasted. The Live Tag URL Still Has Wrappers.
aleksuix profile

MCP validate_vast Passes the XML the Agent Pasted. The Live Tag URL Still Has Wrappers.

#javascript #vast #advertising #ai
Comments
4 min read
Curated Deals Still Look Like Plain PMP Lines. OpenRTB Has No Curation Field.
aleksuix profile

Curated Deals Still Look Like Plain PMP Lines. OpenRTB Has No Curation Field.

#openrtb #advertising #programmatic #adtech
Comments
5 min read
A Bare Mezzanine URL Validates Like VAST 4.0. SSAI at 4.1 Needs Four Attributes.
aleksuix profile

A Bare Mezzanine URL Validates Like VAST 4.0. SSAI at 4.1 Needs Four Attributes.

#vast #advertising #ctv #video
Comments
3 min read
playbackmethod: [1, 2] Validates as JSON. RMT Sound State Needs One Answer.
aleksuix profile

playbackmethod: [1, 2] Validates as JSON. RMT Sound State Needs One Answer.

#openrtb #adtech #video #advertising
Comments
4 min read
A Native Bid Skips required: 1. The Response Still Validates Alone.
aleksuix profile

A Native Bid Skips required: 1. The Response Still Validates Alone.

#openrtb #json #adtech #advertising
Comments
4 min read
A Pause NonLinear MP4 Without Duration Validates. Quartile Beacons Never Schedule.
aleksuix profile

A Pause NonLinear MP4 Without Duration Validates. Quartile Beacons Never Schedule.

#vast #ctv #adtech #xml
Comments
4 min read
ARTF Envelope tmax as "150" Is Not OpenRTB bid_request.tmax. The Agent Still Gets Called.
aleksuix profile

ARTF Envelope tmax as "150" Is Not OpenRTB bid_request.tmax. The Agent Still Gets Called.

#grpc #openrtb #advertising #api
Comments
4 min read
AdCP Scopes the Buy in adagents.json. OpenRTB imp Does Not Carry That Scope Back.
aleksuix profile

AdCP Scopes the Buy in adagents.json. OpenRTB imp Does Not Carry That Scope Back.

#openrtb #advertising #api #javascript
Comments
4 min read
The Inline Logs Impressions. The Wrapper Hop Does Not. VAST Still Requires Both.
aleksuix profile

The Inline Logs Impressions. The Wrapper Hop Does Not. VAST Still Requires Both.

#vast #advertising #video #javascript
Comments
3 min read
exclusive: true in adagents.json Does Not Retire the ads.txt RESELLER Line
aleksuix profile

exclusive: true in adagents.json Does Not Retire the ads.txt RESELLER Line

#openrtb #adtech #advertising #api
Comments
4 min read
gclid on the Next Page Does Not Grant ad_storage. URL Passthrough Is Not Consent.
aleksuix profile

gclid on the Next Page Does Not Grant ad_storage. URL Passthrough Is Not Consent.

#javascript #google #privacy #analytics
Comments
5 min read
Mezzanine-Only SIMID Validates for SSAI. Nobody Runs the Interactive Iframe.
aleksuix profile

Mezzanine-Only SIMID Validates for SSAI. Nobody Runs the Interactive Iframe.

#vast #simid #advertising #javascript
Comments
4 min read
mincpmpersec Without poddur Validates as JSON. OpenRTB Prices Dynamic Pods.
aleksuix profile

mincpmpersec Without poddur Validates as JSON. OpenRTB Prices Dynamic Pods.

#openrtb #adtech #video #ctv
Comments
4 min read
Pinterest CAPI Requires event_id. Meta Only Warns on the Same Field.
aleksuix profile

Pinterest CAPI Requires event_id. Meta Only Warns on the Same Field.

#javascript #advertising #api #analytics
Comments
4 min read
VAST Extension type="pos" With a plcmt Child Still Validates. Stitchers Read type.
aleksuix profile

VAST Extension type="pos" With a plcmt Child Still Validates. Stitchers Read type.

#vast #ctv #xml #advertising
Comments
4 min read
Publisher-Stage ARTF With bid_response on the Envelope Stages the Agent Wrong
aleksuix profile

Publisher-Stage ARTF With bid_response on the Envelope Stages the Agent Wrong

#grpc #openrtb #adtech #api
Comments
4 min read
Raw fbclid in user_data.fbc Is Not Meta's _fbc Cookie. The CAPI POST Can Still Return 200.
aleksuix profile

Raw fbclid in user_data.fbc Is Not Meta's _fbc Cookie. The CAPI POST Can Still Return 200.

#javascript #facebook #analytics #advertising
Comments
4 min read
Root-Level VAST Error and Ad in One Response Breaks the VAST 4.0 Choice
aleksuix profile

Root-Level VAST Error and Ad in One Response Breaks the VAST 4.0 Choice

#vast #xml #advertising #javascript
Comments
4 min read
adagents.json Says direct. brand.json Says delegated. Both Files Return 200.
aleksuix profile

adagents.json Says direct. brand.json Says delegated. Both Files Return 200.

#openrtb #adtech #api #security
Comments
5 min read
gpp_sid=7 Is US National. us_privacy=1YNN Is Not the Same Hop.
aleksuix profile

gpp_sid=7 Is US National. us_privacy=1YNN Is Not the Same Hop.

#javascript #privacy #advertising #gdpr
Comments
5 min read
Lowercase apiFramework="simid" Passes VAST. SIMID Players Skip the Interactive Layer.
aleksuix profile

Lowercase apiFramework="simid" Passes VAST. SIMID Players Skip the Interactive Layer.

#vast #simid #advertising #javascript
Comments
3 min read
skipafter Without skip=1 Validates as JSON. RMT Cannot Derive a Skip Contract From It.
aleksuix profile

skipafter Without skip=1 Validates as JSON. RMT Cannot Derive a Skip Contract From It.

#openrtb #adtech #video #api
Comments
4 min read
AppsFlyer S2S Returns 200 When the iOS App ID Skips the id Prefix. The Event Never Lands.
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AppsFlyer S2S Returns 200 When the iOS App ID Skips the id Prefix. The Event Never Lands.

#javascript #mobile #analytics #api
Comments
4 min read
plcmt=5 With playbackmethod=1 Validates. Those Two Integers Name Different Formats.
aleksuix profile

plcmt=5 With playbackmethod=1 Validates. Those Two Integers Name Different Formats.

#vast #ctv #adtech #xml
Comments
5 min read
ARTF ADD_METRICS Can Propose a Metric With No Type. OpenRTB Requires Metric.type.
aleksuix profile

ARTF ADD_METRICS Can Propose a Metric With No Type. OpenRTB Requires Metric.type.

#grpc #openrtb #adtech #api
Comments
4 min read
TikTok Events API Wants ISO 8601. Unix Epoch Gets Stamped as Arrival Time.
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TikTok Events API Wants ISO 8601. Unix Epoch Gets Stamped as Arrival Time.

#javascript #tiktok #api #advertising
Comments 1
4 min read
AAMP Can Close a Video Buy on AdCP Duration Bounds. Nobody Opened the VAST Tag.
aleksuix profile

AAMP Can Close a Video Buy on AdCP Duration Bounds. Nobody Opened the VAST Tag.

#vast #adtech #advertising #api
Comments
4 min read
hp=0 in SupplyChain 1.1 Marks Custody Hops. ads.txt Checks on Them False-Fail.
aleksuix profile

hp=0 in SupplyChain 1.1 Marks Custody Hops. ads.txt Checks on Them False-Fail.

#openrtb #adtech #advertising #api
Comments
5 min read
Reject on the Banner Can Still Be Grant in gdpr_consent. Withdraw Has to Change the Hop.
aleksuix profile

Reject on the Banner Can Still Be Grant in gdpr_consent. Withdraw Has to Change the Hop.

#javascript #gdpr #advertising #privacy
Comments
5 min read
A VAST Tag Can Ship AdVerifications and Still Deliver Zero OMID Measurement
aleksuix profile

A VAST Tag Can Ship AdVerifications and Still Deliver Zero OMID Measurement

#vast #javascript #advertising #ctv
Comments
5 min read
OpenRTB 3.0 Placement With Only tagid Has No AdCOM Subtype
aleksuix profile

OpenRTB 3.0 Placement With Only tagid Has No AdCOM Subtype

#openrtb #adtech #json #advertising
Comments
3 min read
A TC String in the gpp Parameter Decodes as Header Type 2, Not Type 3
aleksuix profile

A TC String in the gpp Parameter Decodes as Header Type 2, Not Type 3

#javascript #advertising #privacy #gdpr
Comments
4 min read
plcmt=5 in the VAST Tag Does Not Make a Linear MP4 a Pause Ad
aleksuix profile

plcmt=5 in the VAST Tag Does Not Make a Linear MP4 a Pause Ad

#vast #ctv #adtech #xml
Comments
5 min read
MCP validate_bid_request Defaults to profile spec. Google AB Needs at: 3 and billing_id.
aleksuix profile

MCP validate_bid_request Defaults to profile spec. Google AB Needs at: 3 and billing_id.

#openrtb #api #adtech #grpc
Comments
4 min read
Reddit CAPI v3 Wants Milliseconds. Meta's Seconds Helper Lands in 1970.
aleksuix profile

Reddit CAPI v3 Wants Milliseconds. Meta's Seconds Helper Lands in 1970.

#javascript #reddit #analytics #api
Comments
5 min read
A Companion With No Width Is Not a 300x250. The Player Cannot Match It.
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A Companion With No Width Is Not a 300x250. The Player Cannot Match It.

#vast #xml #advertising #ctv
Comments
3 min read
LIFECYCLE_DSP_BID_RESPONSE Can Ship Without bid_response. The Agent Has Nothing to Shade.
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LIFECYCLE_DSP_BID_RESPONSE Can Ship Without bid_response. The Agent Has Nothing to Shade.

#grpc #openrtb #adtech #api
Comments
4 min read
AAMP Can Finish a Video Buy With a Wrapper. It Cannot Prove the InLine Exists.
aleksuix profile

AAMP Can Finish a Video Buy With a Wrapper. It Cannot Prove the InLine Exists.

#vast #adtech #advertising #api
5
Comments 6
5 min read
One CAPI JSON cannot serve every vendor
aleksuix profile

One CAPI JSON cannot serve every vendor

#javascript #api #advertising #webdev
1
Comments 1
2 min read
OpenAI CAPI is not Meta with a new host
aleksuix profile

OpenAI CAPI is not Meta with a new host

#javascript #api #advertising #webdev
Comments
2 min read
imp.native.request is a JSON string, not a nested object.
aleksuix profile

imp.native.request is a JSON string, not a nested object.

#openrtb #json #adtech #api
1
Comments
2 min read
adagents.json does not audit schain. Those two trust files do not talk.
aleksuix profile

adagents.json does not audit schain. Those two trust files do not talk.

#openrtb #adtech #api #security
Comments
2 min read
The Wrapper You QA Is Not the Creative That Plays. The Inline Lives on Another Host.
aleksuix profile

The Wrapper You QA Is Not the Creative That Plays. The Inline Lives on Another Host.

#vast #adtech #xml #ctv
Comments
2 min read
A Live VAST URL Is Not a Paste. The Tester and the Inspector Do Different Jobs.
aleksuix profile

A Live VAST URL Is Not a Paste. The Tester and the Inspector Do Different Jobs.

#vast #adtech #xml #video
1
Comments
3 min read
VAST 4.1 Dropped UniversalAdId's idValue Attribute. The ID Has to Live in the Text.
aleksuix profile

VAST 4.1 Dropped UniversalAdId's idValue Attribute. The ID Has to Live in the Text.

#vast #xml #adtech #ctv
Comments
4 min read
LinkedIn's Conversions API Wants userIds Even When You Match on userInfo
aleksuix profile

LinkedIn's Conversions API Wants userIds Even When You Match on userInfo

#javascript #linkedin #analytics #api
Comments
4 min read
OpenRTB Video Still Sends placement: 1. Buyers Filter on plcmt Now.
aleksuix profile

OpenRTB Video Still Sends placement: 1. Buyers Filter on plcmt Now.

#openrtb #adtech #video #api
Comments
4 min read
A Linear VAST Tag Can Ship an MP4 and Still Be Missing Duration
aleksuix profile

A Linear VAST Tag Can Ship an MP4 and Still Be Missing Duration

#vast #xml #adtech #ctv
Comments
4 min read
A Segment Track Call Needs an Event Name. The HTTP 200 Does Not Check.
aleksuix profile

A Segment Track Call Needs an Event Name. The HTTP 200 Does Not Check.

#javascript #analytics #api #segment
Comments
3 min read
PostHog Capture Treats an Epoch Timestamp as Ingestion Time
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PostHog Capture Treats an Epoch Timestamp as Ingestion Time

#javascript #posthog #analytics #api
Comments
3 min read
GA4 Measurement Protocol Wants Microseconds. Date.now() Is Milliseconds.
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GA4 Measurement Protocol Wants Microseconds. Date.now() Is Milliseconds.

#javascript #google #analytics #ga4
Comments
4 min read
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