Features

• electron: Ship dd-trace-electron package with reduced dependencies #8948
• General: Trace core-API HTTP/2 servers #9138
• graphql: Trace Apollo Federation entity resolvers and skip the health-check #9134
• Test Optimization: Add EFD retry count override #9344
• Test Optimization: Diagnose and fix Jest suite skipping #9339

Fixes

• aws-sdk: Record kinesis DSM checkpoint only when context ships #9183
• graphql: Skip Apollo health checks in Mercurius #9363
• LLM Observability: Replace Object.create(span) with delegating wrapper to preserve OTel span private-field access #9152
• proxy: Retain feature modules across tracing reconfiguration #9331
• Test Optimization: Isolate retry status by spec #9340
• Test Optimization: Preserve zero EFD retry budgets #9341
• Test Optimization: Prevent negative test durations #9380
• Test Optimization: Resolve disabled git upload immediately #9338
• Test Optimization: Support cucumber 13.1 results #9370
• Test Optimization: Wait for all worker writers #9349

Performance

• graphql: Reuse filtered variables across resolve spans #9225

Internal (CI, Testing, Benchmarking)

• AppSec: Select mongodb version by Node.js runtime in plugin tests #9322
• ci: Set 16 retries for dd-sts-action #9374
• Dependencies: Bump bullmq #9350
• Dependencies: Bump pnpm #9365
• Dependencies: Bump protobufjs from 8.6.5 to 8.7.0 in /vendor in the vendor-minor-and-patch-dependencies group across 1 directory #9325
• express: Exercise loopback public entry #9291
• express: Trace middleware via layer prototype dispatch #9067
• General: Make no-traces timeout test deterministic #9372
• General: Prepare lint and Vitest for TypeScript 7 #9345
• General: Preserve coverage from custom plugin jobs #9386
• General: Reject when no matching trace arrives before the timeout #9177
• General: Select latest unversioned dependency range #9352
• LLM Observability: Centralize session_id injection in handleLLMObsInjection #9353
• LLM Observability: Cover compatible SDK provider version matrix #9332
• Test Optimization: Assert complete run payloads #9358
• Test Optimization: Make STS API key fetch non-fatal #9320
• undici: Force proxy tunnel in CONNECT regression test #9271

Features

• electron: Ship dd-trace-electron package with reduced dependencies #8948
• General: Trace core-API HTTP/2 servers #9138
• graphql: Trace Apollo Federation entity resolvers and skip the health-check #9134
• Test Optimization: Add EFD retry count override #9344
• Test Optimization: Diagnose and fix Jest suite skipping #9339

Fixes

• aws-sdk: Record kinesis DSM checkpoint only when context ships #9183
• graphql: Skip Apollo health checks in Mercurius #9363
• LLM Observability: Replace Object.create(span) with delegating wrapper to preserve OTel span private-field access #9152
• proxy: Retain feature modules across tracing reconfiguration #9331
• Test Optimization: Isolate retry status by spec #9340
• Test Optimization: Preserve zero EFD retry budgets #9341
• Test Optimization: Prevent negative test durations #9380
• Test Optimization: Resolve disabled git upload immediately #9338
• Test Optimization: Support cucumber 13.1 results #9370
• Test Optimization: Wait for all worker writers #9349

Performance

• graphql: Reuse filtered variables across resolve spans #9225

Internal (CI, Testing, Benchmarking)

• AppSec: Select mongodb version by Node.js runtime in plugin tests #9322
• ci: Set 16 retries for dd-sts-action #9374
• Dependencies: Bump bullmq #9350
• Dependencies: Bump pnpm #9365
• Dependencies: Bump protobufjs from 8.6.5 to 8.7.0 in /vendor in the vendor-minor-and-patch-dependencies group across 1 directory #9325
• express: Exercise loopback public entry #9291
• express: Trace middleware via layer prototype dispatch #9067
• General: Make no-traces timeout test deterministic #9372
• General: Prepare lint and Vitest for TypeScript 7 #9345
• General: Preserve coverage from custom plugin jobs #9386
• General: Reject when no matching trace arrives before the timeout #9177
• General: Select latest unversioned dependency range #9352
• LLM Observability: Centralize session_id injection in handleLLMObsInjection #9353
• LLM Observability: Cover compatible SDK provider version matrix #9332
• Test Optimization: Assert complete run payloads #9358
• Test Optimization: Make STS API key fetch non-fatal #9320
• undici: Force proxy tunnel in CONNECT regression test #9271

Features

• @modelcontextprotocol/sdk: Add tracing for MCP server requests and client operations #8916
• General: Sample event loop delay per iteration on Node 26.5+ #9273
• LLM Observability: Propagate session_id to following spans and across services MLOB-7756 #9279

Fixes

• AppSec: Instrument cookie parseCookie for cookie >=1.1 #9272
• AppSec: Log the error when the native WAF binding fails to load #9288
• AppSec: Suppress informational responses after blocking requests #9290
• azure: Enable Web Crypto on Node 18 #9311
• azure-functions: Fix span links and missing telemetry for non-HTTP triggers #9278
• General: Handle invalid programmatic option values #9312
• graphql: Honor errorExtensions on the mercurius request span #9284
• OpenTelemetry: Wire span processors passed to the provider constructor #9285
• Test Optimization: Do not mark unchanged tests as impacted #9314
• Test Optimization: Handle disabled tests in serial retries #9313
• Test Optimization: Omit empty FTR capture containers #9304

Internal (CI, Testing, Benchmarking)

• AppSec: Deflake api-security telemetry metrics integration tests #9303
• General: Select version targets by Node.js runtime #9306
• lint: Revert editorconfig checker from npm to docker #9315
• OpenTelemetry: Deflake OTLP metrics HTTP export test with fake timers #9287
• readme: Update eol column for v5 #9267

Features

• @modelcontextprotocol/sdk: Add tracing for MCP server requests and client operations #8916
• General: Sample event loop delay per iteration on Node 26.5+ #9273
• LLM Observability: Propagate session_id to following spans and across services MLOB-7756 #9279

Fixes

• AppSec: Instrument cookie parseCookie for cookie >=1.1 #9272
• AppSec: Log the error when the native WAF binding fails to load #9288
• AppSec: Suppress informational responses after blocking requests #9290
• azure: Enable Web Crypto on Node 18 #9311
• azure-functions: Fix span links and missing telemetry for non-HTTP triggers #9278
• General: Handle invalid programmatic option values #9312
• graphql: Honor errorExtensions on the mercurius request span #9284
• OpenTelemetry: Wire span processors passed to the provider constructor #9285
• Test Optimization: Do not mark unchanged tests as impacted #9314
• Test Optimization: Handle disabled tests in serial retries #9313
• Test Optimization: Omit empty FTR capture containers #9304

Internal (CI, Testing, Benchmarking)

• AppSec: Deflake api-security telemetry metrics integration tests #9303
• General: Select version targets by Node.js runtime #9306
• lint: Revert editorconfig checker from npm to docker #9315
• OpenTelemetry: Deflake OTLP metrics HTTP export test with fake timers #9287
• readme: Update eol column for v5 #9267

Features

• graphql: Add mercurius support with a top-level graphql.request span #9142

Fixes

• AppSec: Report request headers on Lambda spans when AppSec is enabled #9257
• General: Avoid rewriter source map marker in source #9212
• General: Skip loader hook registration when instrumentation bails out #9242
• guardrails: Forward abort telemetry synchronously to avoid a hung exit #9268
• instrumentations: Preserve asyncEnd wait with code-transformer 0.16 #9256
• msgpack: Cap MsgpackChunk growth at the agent intake limit #8672
• OpenTelemetry: Wrap sdk-trace TracerProvider for sdk-node 0.220+ #9255
• ssi: Run ssi in current proposal branch #9223
• Test Optimization: Stop propagating metadata to workers #9261

Documentation

• Serverless: Add serverless integrations skill #9188

Internal (CI, Testing, Benchmarking)

• benchmarks: Support BP_EXTERNAL_S3_URL override #9155
• guardrails: Skip node 24 initialize runtime checks #9283
• init: Skip node 22 loader guardrails #9277
• Test Optimization: Cover msw preload regression #9262
• Test Optimization: Stabilize atf final status assertion #9253
• Test Optimization: Stabilize request error tag reporting #9254

Features

• graphql: Add mercurius support with a top-level graphql.request span #9142

Fixes

• AppSec: Report request headers on Lambda spans when AppSec is enabled #9257
• General: Avoid rewriter source map marker in source #9212
• General: Skip loader hook registration when instrumentation bails out #9242
• guardrails: Forward abort telemetry synchronously to avoid a hung exit #9268
• instrumentations: Preserve asyncEnd wait with code-transformer 0.16 #9256
• msgpack: Cap MsgpackChunk growth at the agent intake limit #8672
• OpenTelemetry: Wrap sdk-trace TracerProvider for sdk-node 0.220+ #9255
• ssi: Run ssi in current proposal branch #9223
• Test Optimization: Stop propagating metadata to workers #9261

Documentation

• Serverless: Add serverless integrations skill #9188

Internal (CI, Testing, Benchmarking)

• benchmarks: Support BP_EXTERNAL_S3_URL override #9155
• guardrails: Skip node 24 initialize runtime checks #9283
• init: Skip node 22 loader guardrails #9277
• Test Optimization: Cover msw preload regression #9262
• Test Optimization: Stabilize atf final status assertion #9253
• Test Optimization: Stabilize request error tag reporting #9254

Features

• claude-agent-sdk: Add support for @anthropic-ai/claude-agent-sdk #9202
• graphql: Support collapse, depth, variables, and error extensions via env #9111
• LLM Observability: Support vercel ai sdk v7 #8949
• mongodb: Open a parent span for Collection#bulkWrite #9109
• Test Optimization: Tag failure screenshot upload result #9232
• Test Optimization: Upload failure screenshots to the v2 media endpoint #8981

Fixes

• AppSec: Support apollo v5 blocking #9007
• aws-durable-execution-sdk-js: SVLS-8588 set span type to serverless #9162
• child_process: Stabilize promisified exec spans #9180
• Crash Tracking: Resolve frames out-of-process on Linux #9237
• fastify: Bound avvio's boot re-drive and stop swallowing async hook rejections #9118
• graphql: Make the resolve span the active scope inside resolvers #8208
• OpenTelemetry: Apply global/resource tags to OTel-bridged spans #9229
• Profiling: Abort profile upload on socket timeout #9217
• Test Optimization: Changed DD_MAJOR guards to greater than or equal #9199
• Test Optimization: Ignore intermediate retry failures in aggregate status #9231
• Test Optimization: Instrument build index module loads #9211
• Test Optimization: Propagate no-worker request error tags #9189
• Test Optimization: Report tests from custom environments #9194
• Test Optimization: Stabilize failed test replay waits #9193
• Test Optimization: Support concurrent Vitest tests #8412
• Test Optimization: Support test.concurrent #9209

Internal (CI, Testing, Benchmarking)

• AI Guard: Rework aiguard integrations #9185
• AppSec: Remove dead code and fix stale comments in nosql mongodb analyzer #9168
• coverage: Collect integration coverage with native V8 instead of istanbul #9091
• Dependencies: Bump import-in-the-middle to 3.3.1 #9235
• Dependencies: Bump npm #9205
• General: Reject non-string version ranges in withVersions #9187
• plugin-env: Read apm-integrations.yml after workflow rename #9224
• Test Optimization: Stabilize Playwright retry tagging flake #9216

Features

• claude-agent-sdk: Add support for @anthropic-ai/claude-agent-sdk #9202
• graphql: Support collapse, depth, variables, and error extensions via env #9111
• LLM Observability: Support vercel ai sdk v7 #8949
• mongodb: Open a parent span for Collection#bulkWrite #9109
• Test Optimization: Tag failure screenshot upload result #9232
• Test Optimization: Upload failure screenshots to the v2 media endpoint #8981

Fixes

• AppSec: Support apollo v5 blocking #9007
• aws-durable-execution-sdk-js: SVLS-8588 set span type to serverless #9162
• child_process: Stabilize promisified exec spans #9180
• Crash Tracking: Resolve frames out-of-process on Linux #9237
• fastify: Bound avvio's boot re-drive and stop swallowing async hook rejections #9118
• graphql: Make the resolve span the active scope inside resolvers #8208
• OpenTelemetry: Apply global/resource tags to OTel-bridged spans #9229
• Profiling: Abort profile upload on socket timeout #9217
• Test Optimization: Changed DD_MAJOR guards to greater than or equal #9199
• Test Optimization: Ignore intermediate retry failures in aggregate status #9231
• Test Optimization: Instrument build index module loads #9211
• Test Optimization: Propagate no-worker request error tags #9189
• Test Optimization: Report tests from custom environments #9194
• Test Optimization: Stabilize failed test replay waits #9193
• Test Optimization: Support concurrent Vitest tests #8412
• Test Optimization: Support test.concurrent #9209

Internal (CI, Testing, Benchmarking)

• AI Guard: Rework aiguard integrations #9185
• AppSec: Remove dead code and fix stale comments in nosql mongodb analyzer #9168
• coverage: Collect integration coverage with native V8 instead of istanbul #9091
• Dependencies: Bump import-in-the-middle to 3.3.1 #9235
• Dependencies: Bump npm #9205
• General: Reject non-string version ranges in withVersions #9187
• plugin-env: Read apm-integrations.yml after workflow rename #9224
• Test Optimization: Stabilize Playwright retry tagging flake #9216

Breaking Changes

• AppSec: Drop deprecated securityControls type #8315
• General: Drop support for Node.js 18 and 20 in v6 #9104
• General: Drop deprecated whitelist/blacklist plugin types from v6 surface #8321
• General: Gate addLink(spanContext, attributes) legacy overload off in v6 #8319
• graphql: Decouple resolver depth from path collapsing #8774
• LLM Observability: Change span resource names to be consistent between openai v3 and v4 #5638
• loader-hook: Add include configuration for import-in-the-middle #6455
• v6.0.0-pre #3919
• Test Optimization: Change default test session name #5409
• Test Optimization: Default Nx and Lage names #8268
• Test Optimization: Raise Cypress minimum version to 10.2.0 #5397
• Test Optimization: Raise Cypress minimum version to 12.0.0 #8247
• Test Optimization: Raise Jest minimum version to 28.0.0 #8246
• Test Optimization: Raise Mocha minimum version to 8.0.0 #8245
• Test Optimization: Raise Playwright minimum version to 1.38.0 #5596

Features

• AppSec: In App WAF support for lambda #7783
• General: SVLS-9168 add aws.durable.operation_attempt tag to durable operation spans #8595
• OpenTelemetry: OTLP trace metrics support #8206
• release: Add breaking changes to release proposal #9196
• Test Optimization: Add vitest no-worker init mode #9173

Fixes

• AppSec: Scope the mongodb nosql-analysis marker per query #9076
• aws-durable-execution-sdk-js: Treat FAILED checkpoints as replays #9160
• datastreams: Flush on write when flushInterval is 0 #9120
• General: Wrap lazily defined fs.opendir on Node 20 #9094
• Test Optimization: Handle missing beforeEach task result #9129
• Test Optimization: Report typecheck tests #9176
• Test Optimization: Route thread workers through main process #9169

Performance

• General: Load the GCP pubsub push plugin lazily #9178
• loader: Match instrumented modules with a shouldInclude predicate #9026

Documentation

• agents: Clarify internal import ordering rule #9172
• v6: Updated documentation for v6 #9159

Internal (CI, Testing, Benchmarking)

• child_process: Fix Bluebird flake that cascades to every later spec #9078
• child_process: Load the mock agent once per suite #9113
• coverage: Merge per-integration coverage in All Green before upload #9086
• Dependencies: Bump bullmq #9164
• Dependencies: Bump openai #9122
• Dependencies: Bump the vendor-minor-and-patch-dependencies group across 1 directory with 2 updates #9163
• Dynamic Instrumentation: Cover breakpoint error paths #8996
• engines: Widen engines.node to >=18 in CI to keep Node 18/20 jobs running #9145
• General: Derive supported config paths from canonical names #9112
• General: Drop dead profile assert helper and fix telemetry typo #7686
• General: Introduce namespace field and start pruning internalPropertyName #8943
• General: Key plugin version folders by single-digit major #9052
• General: Widen GC pause p95 bound to deflake #9121
• graphql: Migrate shimmer to orchestrion instrumentation #7757
• kafkajs: Drop retries:0 from header-disable producer tests #9106
• kafkajs: Stop pinning the produce offset in the sendBatch test #9074
• LLM Observability: Bump tested langchain versions with new cassette #9135
• LLM Observability: Use DD_LLMOBS_ENABLED in tagger sampling fixtures #9107
• oracledb: Bound connect and query timeouts in the ESM integration fixture #9105
• Add runtime family tag on appsec lambda span #9153
• feat(test optimization) Add Test Optimization HTTP cache reader #8860
• release: Add v6 into release workflows #9103
• release: Fix branch-diff Infinity crash on scientific notation SHAs #9101
• release: Fix publish by dropping dist-tag add #9100
• scripts: Disable V8 Maglev for Windows test children #9131
• Test Optimization: Handle 5xx retry in getKnownTests error test #9110
• Test Optimization: Prepare test metadata in main #9171
• Test Optimization: Split main and worker instrumentation #9170

Contributors

Features

• AppSec: In App WAF support for lambda #7783
• General: SVLS-9168 add aws.durable.operation_attempt tag to durable operation spans #8595
• OpenTelemetry: OTLP trace metrics support #8206
• release: Add breaking changes to release proposal #9196
• Test Optimization: Add vitest no-worker init mode #9173

Fixes

• AppSec: Scope the mongodb nosql-analysis marker per query #9076
• aws-durable-execution-sdk-js: Treat FAILED checkpoints as replays #9160
• datastreams: Flush on write when flushInterval is 0 #9120
• General: Wrap lazily defined fs.opendir on Node 20 #9094
• Test Optimization: Handle missing beforeEach task result #9129
• Test Optimization: Report typecheck tests #9176
• Test Optimization: Route thread workers through main process #9169

Performance

• General: Load the GCP pubsub push plugin lazily #9178
• loader: Match instrumented modules with a shouldInclude predicate #9026

Documentation

• agents: Clarify internal import ordering rule #9172
• v6: Updated documentation for v6 #9159

Internal (CI, Testing, Benchmarking)

• child_process: Fix Bluebird flake that cascades to every later spec #9078
• child_process: Load the mock agent once per suite #9113
• coverage: Merge per-integration coverage in All Green before upload #9086
• Dependencies: Bump bullmq #9164
• Dependencies: Bump openai #9122
• Dependencies: Bump the vendor-minor-and-patch-dependencies group across 1 directory with 2 updates #9163
• Dynamic Instrumentation: Cover breakpoint error paths #8996
• engines: Widen engines.node to >=18 in CI to keep Node 18/20 jobs running #9145
• General: Derive supported config paths from canonical names #9112
• General: Drop dead profile assert helper and fix telemetry typo #7686
• General: Introduce namespace field and start pruning internalPropertyName #8943
• General: Key plugin version folders by single-digit major #9052
• General: Widen GC pause p95 bound to deflake #9121
• graphql: Migrate shimmer to orchestrion instrumentation #7757
• kafkajs: Drop retries:0 from header-disable producer tests #9106
• kafkajs: Stop pinning the produce offset in the sendBatch test #9074
• LLM Observability: Bump tested langchain versions with new cassette #9135
• LLM Observability: Use DD_LLMOBS_ENABLED in tagger sampling fixtures #9107
• oracledb: Bound connect and query timeouts in the ESM integration fixture #9105
• Add runtime family tag on appsec lambda span #9153
• feat(test optimization) Add Test Optimization HTTP cache reader #8860
• release: Add v6 into release workflows #9103
• release: Fix branch-diff Infinity crash on scientific notation SHAs #9101
• release: Fix publish by dropping dist-tag add #9100
• scripts: Disable V8 Maglev for Windows test children #9131
• Test Optimization: Handle 5xx retry in getKnownTests error test #9110
• Test Optimization: Prepare test metadata in main #9171
• Test Optimization: Split main and worker instrumentation #9170