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Changelog

All notable changes to eyrie are documented here.
Format: Keep a Changelog · Versioning: SemVer

0.2.1 (2026-05-16)

Bug Fixes

  • flaky test TestOpenAIStreamChat_MultipleToolCalls order assertion (f5e7f3b)
  • gofumpt formatting (7de54e3)
  • gofumpt formatting + go mod tidy (8bd58dc)
  • remaining errcheck issues (a0a746a)
  • resolve all lint errors (bodyclose, errcheck, gocritic, noctx, unlambda) (566980f)
  • syntax errors in test files (51809bc)
  • upgrade Go from 1.26.1 to 1.26.3 to patch stdlib vulnerabilities (f4a6594)

Tests

  • fix flaky TestBackoffDelay by accounting for jitter (5fa573f)

[Unreleased]

Changed

  • Version re-baselined to 0.2.0 in eyrie.go (const Version) and client/client.go (var Version, used in the User-Agent header). Aligns eyrie with the rest of the hawk-eco ecosystem (hawk, tok, yaad, sight, inspect).

Added — Production Hardening (top-50 OSS parity)

  • Same-style hardening pass already on this branch: strict golangci-lint v2 config, unchecked-error fixes across observability.go, sdk/go/client.go, storage/dag.go, storage/sqlite.go, dead-code removal, and gofmt cleanup of the residual blank-line drift in client/client.go.
  • CONTRIBUTING.md — development setup, branch flow, conventional commits, test/lint requirements.
  • CODE_OF_CONDUCT.md — Contributor Covenant 2.1.
  • .gitattributes — LF line-ending normalization, binary detection, GitHub linguist hints.
  • .github/dependabot.yml — weekly gomod + github-actions updates.
  • .github/PULL_REQUEST_TEMPLATE.md — Summary / Changes / Testing / Checklist.
  • .github/ISSUE_TEMPLATE/bug_report.yml — structured bug report.
  • .github/ISSUE_TEMPLATE/feature_request.yml — feature request with solo-developer fit checks.
  • .github/ISSUE_TEMPLATE/config.yml — routes security reports to GitHub Security Advisories, questions to Discussions, blocks blank issues.

[0.1.0] — 2026-05-12

Initial release.

Added

Clients

  • Provider interface — Chat, StreamChat, Ping, Name — composable and mockable
  • AnthropicClient — Anthropic Messages API with full content block support
  • OpenAIClient — OpenAI and all OpenAI-compatible providers
  • MockProvider — testing without API keys (echo / fixed / tool_use / error / max_tokens modes)
  • EyrieClient — thread-safe universal client with cached provider instances

Streaming

  • SSE parser for Anthropic and OpenAI formats
  • Tool call streaming — input_json_delta accumulation (Anthropic), index-based accumulation (OpenAI)
  • Thinking block streaming (thinking_delta)
  • StreamResult with Close() — no goroutine leaks
  • Buffered channels (64) with goroutine-owned close

Reliability

  • Retry — exponential backoff, full jitter, Retry-After header support
  • ChatWithContinuation — auto-retry on max_tokens (up to 3 continuations)
  • WithRateLimit — token bucket rate limiter decorator
  • Fallback provider chains with automatic failover on retriable errors
  • Provider health checking and success/failure stat tracking

Caching

  • AddCacheBreakpoints — Anthropic cache_control on system prompt and conversation prefix
  • Semantic caching for repeated queries
  • Cache analytics (hit/miss stats)

Catalog

  • Embedded model catalog — pricing, context windows, max output for 8 providers
  • Live fetch from OpenRouter and CanopyWave
  • Model tier resolution — opus / sonnet / haiku → concrete model IDs
  • Model name canonicalization and marketing display names
  • Deprecation warnings per provider

Config

  • Provider detection from env vars (priority order)
  • ~/.hawk/provider.json config file I/O
  • ApplyProviderConfigToEnv — applies config to os.Environ
  • OpenAI-compatible runtime resolution
  • Provider profile management

Advanced

  • Call metrics collector for provider usage tracking
  • Role merge utility for message optimization
  • Dynamic provider registration with registry freezing
  • Weighted provider selection for load balancing
  • Batch API support (Anthropic Message Batches)
  • Cost estimator for pre-call cost prediction
  • Embedding support

Quality

  • User-Agent: eyrie/0.1.0 on all HTTP requests
  • Request ID captured from response headers
  • 4 KB error body cap — prevents OOM on large error responses
  • "eyrie: " prefix on all errors with %w wrapping
  • Zero external dependencies · Go 1.26