# AethelLayer - Catch the error before they leave > Probe inbox for CLI, SDK, and API failures. Catch the error while the developer is still in the stack. Agents propose GitHub/Linear drafts. Humans ship. https://aethellayer.com ## Product - [Home](https://aethellayer.com/): Catch the failure before they leave - [Product](https://aethellayer.com/product) - [Platform](https://aethellayer.com/platform) - [How it works](https://aethellayer.com/how-it-works) - [Solutions](https://aethellayer.com/solutions) - [Pricing](https://aethellayer.com/pricing): Starter $99, Growth $299, Scale $899, Enterprise custom. Memory Graph on Growth+ - [Enterprise](https://aethellayer.com/enterprise): 14-day eval, procurement pack, SSO/SCIM/audit/VPC on contract - [Trust pack](https://aethellayer.com/trust): SIG-style InfoSec answers - [Security](https://aethellayer.com/security): Hashed identity, org-scoped ingest keys, RLS, human-approved tickets, SOC 2 Type II in progress (no fake badge) - [FAQ](https://aethellayer.com/faq) - [Early access](https://aethellayer.com/early-access) - [About](https://aethellayer.com/about) ## Positioning Not an APM. Not a people CRM. Not auto-filing public issues. Talk at the error, not after they churn. ## Blog - [Why developers don't file SDK bug reports](https://aethellayer.com/blog/why-developers-dont-file-sdk-bug-reports) - [CLI error message best practices](https://aethellayer.com/blog/cli-error-message-best-practices) - [Stable CLI exit codes](https://aethellayer.com/blog/stable-cli-exit-codes) - [SDK time to hello world](https://aethellayer.com/blog/sdk-time-to-hello-world) - [GitHub issues after a CLI failure](https://aethellayer.com/blog/github-issue-template-from-a-cli-failure) - [Ask what they were trying to do](https://aethellayer.com/blog/ask-what-were-you-trying-to-do) - [Node SDK exception hooks](https://aethellayer.com/blog/node-sdk-uncaught-exception-hook) - [Python SDK exception hooks](https://aethellayer.com/blog/python-sdk-exception-hook) - [Webhook signature failures](https://aethellayer.com/blog/webhook-signature-verification-failures) - [Idempotency-Key errors](https://aethellayer.com/blog/idempotency-key-errors-api-dx) - [Docker Compose quickstart failures](https://aethellayer.com/blog/docker-compose-sdk-quickstart-failures) - [Developer experience metrics](https://aethellayer.com/blog/developer-experience-metrics-sdk-teams) - [Support deflection at the error](https://aethellayer.com/blog/support-deflection-for-developer-tools) - [Public API error code taxonomy](https://aethellayer.com/blog/public-api-error-code-taxonomy) - [Sample app failures](https://aethellayer.com/blog/sample-app-failures-sdk-evaluation) - [Debug an npx CLI without a screenshare](https://aethellayer.com/blog/npx-cli-debugging-without-a-screenshare) - [OAuth device-code errors](https://aethellayer.com/blog/oauth-device-code-flow-errors) - [Actionable SDK stack traces](https://aethellayer.com/blog/actionable-stack-traces-for-sdk-users) - [stdout vs stderr for CLI errors](https://aethellayer.com/blog/stdout-vs-stderr-for-cli-errors) - [Rate-limit errors developers can retry](https://aethellayer.com/blog/rate-limit-errors-developers-can-retry) - [Draft the GitHub issue, humans send it](https://aethellayer.com/blog/draft-github-issues-humans-still-send) - [Python version mismatches](https://aethellayer.com/blog/python-version-mismatch-sdk-quickstart) - [Missing environment variables](https://aethellayer.com/blog/missing-environment-variables-cli) - [SDK timeout errors](https://aethellayer.com/blog/sdk-timeout-errors) - [Retry backoff that hides bugs](https://aethellayer.com/blog/retry-backoff-hides-sdk-bugs) - [CORS during onboarding](https://aethellayer.com/blog/cors-errors-api-onboarding) - [401 vs 403](https://aethellayer.com/blog/401-vs-403-for-api-developers) - [Corporate proxy CLI failures](https://aethellayer.com/blog/corporate-proxy-cli-failures) - [OpenTelemetry vs a developer inbox](https://aethellayer.com/blog/opentelemetry-vs-developer-error-inbox) - [Why Sentry misses CLI failures](https://aethellayer.com/blog/why-sentry-misses-cli-failures) - [SDK changelogs](https://aethellayer.com/blog/sdk-changelog-breaking-changes) - [Deprecation warnings](https://aethellayer.com/blog/deprecation-warnings-developers-skip) - [SDK quickstarts](https://aethellayer.com/blog/how-to-write-an-sdk-quickstart) - [npm install failures](https://aethellayer.com/blog/npm-install-failures-sdk-evaluation) - [API versioning](https://aethellayer.com/blog/api-versioning-for-public-sdks) - [Webhook retries](https://aethellayer.com/blog/webhook-retries-duplicate-events) - [Status pages vs CLI failures](https://aethellayer.com/blog/status-page-does-not-show-cli-failures) - [Reproduce a bug from the stack](https://aethellayer.com/blog/reproduce-sdk-bug-from-stack-trace) - [MCP tool errors](https://aethellayer.com/blog/mcp-tool-errors-developer-onboarding) - [CLI pointed at the wrong host](https://aethellayer.com/blog/localhost-env-pointed-at-the-wrong-host) - [SDK compatibility matrix](https://aethellayer.com/blog/sdk-compatibility-matrix) - [Hashed developer identity](https://aethellayer.com/blog/hashed-developer-identity-dx-probes) - [Least privilege ingest keys](https://aethellayer.com/blog/least-privilege-sdk-ingest-api-keys) - [SOC 2 without fake badges](https://aethellayer.com/blog/preparing-soc-2-without-fake-badges) - [What not to put in probes](https://aethellayer.com/blog/what-not-to-put-in-error-probes) - [Security review checklist](https://aethellayer.com/blog/security-review-checklist-for-dx-vendors) - [Silent SDK churn](https://aethellayer.com/blog/silent-sdk-churn-dashboard-was-green) - [Capture CLI errors](https://aethellayer.com/blog/capture-cli-errors-before-developers-leave) - [OAuth callback failures](https://aethellayer.com/blog/oauth-callback-failures-sdk-onboarding) - [Docker OOM in the CLI](https://aethellayer.com/blog/docker-oom-cli-login-developer-experience) - [Next.js instrumentation probe](https://aethellayer.com/blog/nextjs-instrumentation-error-probe) - [Agents propose, humans ship](https://aethellayer.com/blog/agents-propose-humans-ship-github-drafts) - [gRPC deadline exceeded](https://aethellayer.com/blog/grpc-deadline-exceeded-api-developer-experience) - [429s during onboarding](https://aethellayer.com/blog/rate-limit-429-developer-onboarding) - [Qualitative research at the error](https://aethellayer.com/blog/qualitative-developer-research-at-the-error) - [APM vs developer inbox](https://aethellayer.com/blog/apm-vs-developer-inbox-for-sdk-teams) - [Multi-workspace DX](https://aethellayer.com/blog/multi-workspace-dx-for-product-lines) - [Reduce evaluation drop-off](https://aethellayer.com/blog/reduce-sdk-evaluation-drop-off) ## Install npm i @aethellayer/sdk — set AETHEL_API_KEY — wrap CLI / Express / Next instrumentation.