Mirrord Header Propagation
Makes a codebase propagate W3C baggage (the `baggage` header carrying...
Install
npx skills add metalbear-co/mirrord --skill mirrord-header-propagation -g -a claude-code -y- Repository
- metalbear-co/mirrord5.4k
- Category
- DevOps
- Updated
- 3d ago
- License
- MIT
- Context cost
- Mediumabout 3,000 tokens
- Runs scripts
- No, instructions only
What it does
Makes a codebase propagate W3C baggage (the `baggage` header carrying `mirrord-session=<key>`) end to end, so mirrord HTTP filters, preview environments, and queue splitting can route a whole request chain to one developer's session. Detects existing OpenTelemetry, Datadog, or other tracing that can already propagate baggage and enables it; otherwise adds a small propagation layer. Covers inbound/outbound HTTP and gRPC, publishing to and consuming from Kafka, RabbitMQ, SQS/SNS, GCP Pub/Sub, Azure Service Bus, NATS, Redis Pub/Sub, BullMQ and Temporal, per-message context restore in consumers, and storage hand-offs such as a GCS signed URL upload that triggers Pub/Sub or an S3 presigned upload that triggers SQS. Ends with a report of every flow found and which ones still drop the header. Use when the user asks to propagate headers, baggage, tracestate, the mirrord session key, or trace context across services or queues, or when a mirrord filter matches the first service but not downstream services or queue consumers.
mirrord Header Propagation Skill
mirrord routes traffic to a developer's session by matching a header. The convention is W3C
baggagewith amirrord-session=<key>entry: HTTP filters use"header_filter": "^baggage: .*mirrord-session={{ key }}.*$", and queue splitting filters on a message header or attribute namedbaggage. That only works past the first hop if every service forwardsbaggageon every outgoing call and every message it publishes, and every consumer restores it from each message it handles. This skill makes a codebase do that, preferring the observability stack it already has.
Security Boundaries
IMPORTANT: Follow these rules for all operations in this skill.
