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Aleksander Sekowski

creator of vastlint

Joined Joined on  github website
One CAPI JSON cannot serve every vendor
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One CAPI JSON cannot serve every vendor

#javascript #api #advertising #webdev
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OpenAI CAPI is not Meta with a new host
aleksuix profile

OpenAI CAPI is not Meta with a new host

#javascript #api #advertising #webdev
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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
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2 min read
adagents.json does not audit schain. Those two trust files do not talk.
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adagents.json does not audit schain. Those two trust files do not talk.

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

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

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

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

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

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

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

#javascript #analytics #api #segment
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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
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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
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4 min read
Meta's Conversions API Wants Seconds. Date.now() Sends Milliseconds.
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Meta's Conversions API Wants Seconds. Date.now() Sends Milliseconds.

#javascript #facebook #analytics #api
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4 min read
The ARTF Spec Document and the Proto Disagree About the Same Mutation
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The ARTF Spec Document and the Proto Disagree About the Same Mutation

#grpc #adtech #json #api
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5 min read
Your Bid Request Says secure: 1. The Protobuf Parser Wants true.
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Your Bid Request Says secure: 1. The Protobuf Parser Wants true.

#json #grpc #adtech #api
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4 min read
Validate VAST Tags in GitHub Actions Without Compiling Rust in CI
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Validate VAST Tags in GitHub Actions Without Compiling Rust in CI

#github #cicd #adtech #xml
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5 min read
VPAID's Replacement Has Been Shipping for Years. Most Tags Still Fail SIMID.
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VPAID's Replacement Has Been Shipping for Years. Most Tags Still Fail SIMID.

#adtech #xml #ctv #javascript
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5 min read
ARTF is a gRPC hop. VAST is a different one.
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ARTF is a gRPC hop. VAST is a different one.

#grpc #rust #advertising #agents
Comments
3 min read
I ran the AdCP conformance suite against my own agent. It found eight bugs.
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I ran the AdCP conformance suite against my own agent. It found eight bugs.

#advertising #testing #webdev #ai
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5 min read
Validate OpenRTB Bid Requests in CI With ajv and a Schema You Did Not Have to Write
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Validate OpenRTB Bid Requests in CI With ajv and a Schema You Did Not Have to Write

#json #node #testing #api
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4 min read
OpenRTB 2.6 Spelled a Device Field 'didshal' for Six Months. Which Snapshot Are You Validating Against?
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OpenRTB 2.6 Spelled a Device Field 'didshal' for Six Months. Which Snapshot Are You Validating Against?

#json #api #adtech #opensource
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5 min read
Your Bid Response Is Valid JSON, Passes Its Schema, and Is Still Wrong
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Your Bid Response Is Valid JSON, Passes Its Schema, and Is Still Wrong

#json #api #testing #adtech
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5 min read
VPAID Is Deprecated. Here Is How to Find Out How Much You Are Still Serving.
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VPAID Is Deprecated. Here Is How to Find Out How Much You Are Still Serving.

#adtech #ctv #javascript #webdev
Comments
5 min read
Playing VAST Ads in Video.js Without the Google IMA SDK
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Playing VAST Ads in Video.js Without the Google IMA SDK

#javascript #webdev #video #adtech
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7 min read
There Is No VAST 4.3 Schema, and the 4.4 Draft Accepts a Completely Empty Ad
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There Is No VAST 4.3 Schema, and the 4.4 Draft Accepts a Completely Empty Ad

#xml #adtech #opensource #testing
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5 min read
Your Ad Pod Lost Half Its Ads and the VAST Still Validates
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Your Ad Pod Lost Half Its Ads and the VAST Still Validates

#ctv #adtech #xml #debugging
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6 min read
An Empty VAST Wrapper Is Schema-Valid in 4.4. It Was Not in 2.0.
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An Empty VAST Wrapper Is Schema-Valid in 4.4. It Was Not in 2.0.

#vast44 #xsd #wrapper #validation
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4 min read
Top 10 OpenRTB Mistakes That Are Costing You Money
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Top 10 OpenRTB Mistakes That Are Costing You Money

#advertising #ctv #webdev #rust
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Comments
6 min read
AAMP vs AdCP: The Two Standards Stacks Racing to Define Agentic Advertising
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AAMP vs AdCP: The Two Standards Stacks Racing to Define Agentic Advertising

#advertising #ctv #ai #iab
Comments
3 min read
The VAST Macros Cheat Sheet Every Ad Ops Engineer Need
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The VAST Macros Cheat Sheet Every Ad Ops Engineer Need

#ctv #adtech #advertising #iab
Comments
4 min read
VASTlint on PyPI: in-process VAST validation for Python backends
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VASTlint on PyPI: in-process VAST validation for Python backends

#python #adtech #video #opensource
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5 min read
VMAP and DAAST Validation Just Landed in vastlint Core
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VMAP and DAAST Validation Just Landed in vastlint Core

#adtech #opensource #rust #ctv
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5 min read
OMID Explained: How IAB's Open Measurement SDK Works with VAST AdVerifications
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OMID Explained: How IAB's Open Measurement SDK Works with VAST AdVerifications

#adtech #vast #advertising #webdev
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5 min read
CTV Fraud Has an IPv6 Business Problem
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CTV Fraud Has an IPv6 Business Problem

#adtech #ctv #fraud
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7 min read
How vastlint's Validation Rules Were Extracted from the VAST PDF Specs and XSD Schemas
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How vastlint's Validation Rules Were Extracted from the VAST PDF Specs and XSD Schemas

#ai #adtech #opensource #rust
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13 min read
I Built a VS Code Extension That Validates VAST XML as You Type
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I Built a VS Code Extension That Validates VAST XML as You Type

#vscode #adtech #opensource #rust
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3 min read
The 10 VAST Errors That Silently Kill Your CTV Ad Revenue
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The 10 VAST Errors That Silently Kill Your CTV Ad Revenue

#adtech #rust #node #ai
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4 min read
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