diff --git a/README.md b/README.md
index 529e36c..c34a108 100644
--- a/README.md
+++ b/README.md
@@ -357,6 +357,7 @@ Every community PR that lands in main is credited here — that's a project rule
 - [@davekopecek](https://github.com/davekopecek) (Dave Kopecek) — committed the design-reference fixture so the design-token guard runs on every machine (#30)
 - [@snapsynapse](https://github.com/snapsynapse) (Sam Rogers) — graceful shutdown on SIGINT/SIGTERM with worker-tree cleanup and finished state, plus the 14-test end-to-end CLI regression suite (#4)
 - [@mlava](https://github.com/mlava) (Mark Lavercombe) — named setup failures across every diagnostic surface (#37) and `run --baseline`, the no-workers check preflight (#38)
+- [@datacraftdevelopment](https://github.com/datacraftdevelopment) — added the Claude-family model identity registry entries (Opus 4.8, Sonnet 5, Haiku 4.5, Fable 5), sourced from Claude Code harness evidence (#72)
 
 Contributions are welcome — see [CONTRIBUTING.md](CONTRIBUTING.md) for the philosophy and what gets a PR merged fast. The short version: small and scoped, rebased on current main, every claim backed by an executed test. Authorship is always preserved — where a maintainer pushes a mechanical fix to your branch, you remain the commit author.
 
diff --git a/registry/model-identity.toml b/registry/model-identity.toml
index 2807de9..c26dbae 100644
--- a/registry/model-identity.toml
+++ b/registry/model-identity.toml
@@ -98,3 +98,50 @@ lab = "Meta"
 confidence = "verified"
 source = "manifest model field; OpenRouter slug meta-llama/llama-3.3-70b-instruct:free"
 last_verified = 2026-07-10
+
+[engines.claude]
+harness = "Claude Code"
+access = "Claude subscription"
+default_model_key = "claude-haiku-4-5"
+
+# Claude-family identities. Evidence precedence is harness-reported model first:
+# the Claude Code worker stream self-reports the model it ran in its result
+# `modelUsage` telemetry (Ringer's reported_model column stays null only because
+# its capture regex is Codex-specific). Each source cites that self-report with
+# run names + dates, plus Anthropic's own model page for the lab.
+
+[engines.claude.models."claude-opus-4-8"]
+display = "Claude Opus 4.8"
+lab = "Anthropic"
+confidence = "verified"
+source = "Claude Code modelUsage self-report: runs claude-family-audition (2026-07-12), hello-world-bakeoff (2026-07-17); Anthropic models overview https://platform.claude.com/docs/en/about-claude/models/overview"
+last_verified = 2026-07-21
+
+[engines.claude.models."claude-sonnet-5"]
+display = "Claude Sonnet 5"
+lab = "Anthropic"
+confidence = "verified"
+source = "Claude Code modelUsage self-report: runs claude-family-audition (2026-07-12), hello-world-bakeoff (2026-07-17); Anthropic models overview https://platform.claude.com/docs/en/about-claude/models/overview"
+last_verified = 2026-07-21
+
+[engines.claude.models."claude-haiku-4-5"]
+display = "Claude Haiku 4.5"
+lab = "Anthropic"
+confidence = "verified"
+source = "Claude Code modelUsage self-report: runs claude-family-audition (2026-07-12), hello-world-site (2026-07-12); Anthropic models overview https://platform.claude.com/docs/en/about-claude/models/overview"
+last_verified = 2026-07-21
+
+# Fable 5: Anthropic's Claude 5 announcement names Fable 5 / Mythos 5 as a new
+# tier above Opus sharing one underlying model; there is no public lineage beyond
+# that. Per docs/TAXONOMY.md, registry aliases are allowed only when the actual
+# model lineage is not established, and must be marked as aliases in both the
+# registry and the displayed name and never presented as a confirmed lineage.
+# The lab (Anthropic) is verified from Anthropic's own announcement; the model
+# lineage is not, so this is entered as an unverified alias, not asserted lineage.
+[engines.claude.models."claude-fable-5"]
+display = "Claude Fable 5 (Anthropic, alias)"
+lab = "Anthropic"
+alias = true
+confidence = "unverified"
+source = "Anthropic Claude 5 announcement — Fable 5 / Mythos 5, new tier above Opus, one shared underlying model, no public lineage: https://platform.claude.com/docs/en/about-claude/models/introducing-claude-fable-5; harness self-report (Claude Code modelUsage): runs fable-audition (2026-07-12), crm-build (2026-07-16), chronoline-build (2026-07-17)"
+last_verified = 2026-07-21