Read the architecture, threat model, technical decisions, and testing guide. Setup and commands are in Develop RequestSeal. Applications install from Hex with {:request_seal, "~> 0.2.0"} in their mix.exs dependency list.

Every public profile, corpus case, notebook, and integration example must derive from a cited public standard or public provider document. Owner clearance is required before publishing a nonstandard private signing profile, verification-to-authorization composition, or private retry/recovery, key-purpose, or address-selection mechanism. Public sources establish protocol requirements; private consumer implementations do not establish them.

Read the normative source for the behavior you change. Add meaningful positive and rejection tests, observe the expected failure, implement the correction, and run the affected checks. Independent vectors, local round trips, and deployed counterpart acceptance are distinct kinds of evidence. Use the actual substrate for integrations.

Keep the core independent of framework processes and ambient configuration. Preserve ordered/raw transport information, caller-owned custody, explicit profiles, and safe results. Document each option and error at its public boundary. Add the corresponding guide, executable example, notebook, and corpus case as capabilities are implemented.

Run the declared gate, python3 scripts/check.py, before delivering a change. It checks formatting, compilation, tests, public documentation, optional clients, dependency advisories, and shipped notebooks. Run the actual profile, corpus, and counterpart checks required by the behavior being changed. Record which checks executed; avoid performance or conformance claims from a local self-round-trip.

Add a substantive ADR when ownership, wire acceptance, compatibility, or trust changes. Review should challenge unnecessary complexity and lost required behavior. Resolve findings and inspect the repair diff. Document incomplete external evidence honestly.

The public document list in mix.exs is shared by ExDoc and the Hex package. New public guides and notebooks require deliberate inclusion. Keep execution plans, private integration details, local tooling state, credentials, and review transcripts out of public files. Follow SECURITY.md for sensitive reports.