diff --git a/scripts/propagate-hypatia-caller-id.sh b/scripts/propagate-hypatia-caller-id.sh
new file mode 100755
index 000000000..486943d5d
--- /dev/null
+++ b/scripts/propagate-hypatia-caller-id.sh
@@ -0,0 +1,196 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: MPL-2.0
+# SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath) <j.d.a.jewell@open.ac.uk>
+#
+# propagate-hypatia-caller-id.sh — deliberate, audit-first standardisation of the
+#   Hypatia wrapper's caller job id across consumer repositories.
+#
+# WHY THIS EXISTS
+# ---------------
+# The check a reusable-caller job publishes is `<caller job id or name> / <inner
+# job display name>`. The estate's canonical required context is
+# `hypatia / Hypatia Neurosymbolic Analysis` (docs/audits/audit-hypatia-pin-orphan-2026-05-27.adoc),
+# which requires the caller job to be named `hypatia`. In practice the caller is
+# named `scan` in the large majority of consumer repositories, so they publish
+# `scan / Hypatia Neurosymbolic Analysis` instead. Two names for one gate: any
+# required context written against one of them is unsatisfiable in a repository
+# that publishes the other — the defect class of hyperpolymath/tropical-types#17.
+#
+# This is the standards-side action that settles it: rename the caller job id to
+# the canonical one, per repository, deliberately.
+#
+# Mode: READ-ONLY (audit) by default. Pass --fix to stage the rewrite in the
+#   consumer checkout. The script NEVER commits, NEVER pushes, and NEVER edits a
+#   required-status-check — that is the human's / bot's job (estate guardrail: no
+#   unattended mutations; mirrors scripts/propagate-workflow-pins.sh).
+#
+# Principles (do not violate):
+#   * Non-destructive: rewrites one job key, nothing else. The body of the job,
+#     its pin, its inputs and its secrets are untouched byte-for-byte.
+#   * Idempotent: a caller already at the canonical id is left untouched.
+#   * Requirement-aware: a rename silently breaks any repository whose rules name
+#     the old prefixed string. Those are reported BLOCKED and refused under --fix
+#     until the requirement is updated in the same change.
+#   * Honest about blindness: legacy branch protection cannot be read with an
+#     ordinary token. If requirements cannot be read, the verdict is UNVERIFIED
+#     and --fix refuses. Never rename on an unread requirement set.
+#   * Shell-only: no Python, no Ruby.
+#
+# Usage:
+#   bash scripts/propagate-hypatia-caller-id.sh [PATH]
+#   bash scripts/propagate-hypatia-caller-id.sh --fix [PATH]
+#   bash scripts/propagate-hypatia-caller-id.sh --caller-id <id> [PATH]
+#   bash scripts/propagate-hypatia-caller-id.sh --no-network [PATH]
+#
+#   PATH may be a single consumer repo (has .github/workflows) or a parent
+#   directory of many repos. Defaults to the current directory.
+#
+#   --caller-id <id>   canonical caller job id (default: hypatia)
+#   --no-network       never probe the API; requirements count as UNVERIFIED
+#   --fix              rewrite the caller job id in place (no commit, no push)
+#
+# Environment seams (testing / CI):
+#   HYPATIA_REQUIRED_JSON  file containing a JSON array of required context
+#                          strings for the repositories under PATH. When set, it
+#                          replaces the API probe entirely (hermetic).
+#   GITHUB_REPOSITORY      used to probe one repository's rulesets when the path
+#                          argument is a single repo and the API is reachable.
+#
+# Output: tab-separated audit lines
+#   <repo>\t<workflow-file>\t<caller-id>\t<verdict>
+# verdict ∈ canonical | stage | BLOCKED | UNVERIFIED | unchanged-shape | absent
+set -uo pipefail
+
+CANONICAL="hypatia"
+MODE_FIX=0
+OFFLINE=0
+TARGET="."
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --fix)         MODE_FIX=1; shift ;;
+    --no-network)  OFFLINE=1; shift ;;
+    --caller-id)   CANONICAL="${2:-}"; shift 2 ;;
+    -h|--help)     sed -n '2,60p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
+    -*)            printf 'unknown option: %s\n' "$1" >&2; exit 2 ;;
+    *)             TARGET="$1"; shift ;;
+  esac
+done
+
+[ -n "$CANONICAL" ] || { echo "canonical caller id must not be empty" >&2; exit 2; }
+
+say() { printf '%s\n' "$*"; }
+note() { printf '::notice::%s\n' "$*" >&2; }
+
+# ---- requirement discovery -------------------------------------------------
+# The rename is only safe when nothing requires the old prefixed string.
+# Returns "read" / "unreadable" and prints one required context per line.
+requirements() {
+  if [ -n "${HYPATIA_REQUIRED_JSON:-}" ]; then
+    [ -f "$HYPATIA_REQUIRED_JSON" ] || { note "HYPATIA_REQUIRED_JSON not found"; echo unreadable; return 0; }
+    if ! command -v jq >/dev/null 2>&1; then echo unreadable; return 0; fi
+    jq -r '.[]' "$HYPATIA_REQUIRED_JSON" 2>/dev/null || { echo unreadable; return 0; }
+    echo "__read__"
+    return 0
+  fi
+  [ "$OFFLINE" = 1 ] && { echo unreadable; return 0; }
+  command -v gh >/dev/null 2>&1 || { echo unreadable; return 0; }
+  command -v jq >/dev/null 2>&1 || { echo unreadable; return 0; }
+  [ -n "${GITHUB_REPOSITORY:-}" ] || { echo unreadable; return 0; }
+  local list body
+  list="$(gh api "repos/$GITHUB_REPOSITORY/rulesets" 2>/dev/null || true)"
+  printf '%s' "$list" | jq -e 'type == "array"' >/dev/null 2>&1 || { echo unreadable; return 0; }
+  for id in $(printf '%s' "$list" | jq -r '.[]? | select(.target=="branch") | .id'); do
+    body="$(gh api "repos/$GITHUB_REPOSITORY/rulesets/$id" 2>/dev/null || true)"
+    printf '%s' "$body" | jq -r '
+      if type == "object" and .enforcement != "disabled" then
+        .rules[]? | select(.type=="required_status_checks") | .parameters.required_status_checks[]?
+        | (.context|tostring)
+      else empty end' 2>/dev/null
+  done
+  echo "__read__"
+}
+
+# Read the requirement set once for the whole run: a parent directory of repos
+# cannot be probed per-repo with a single GITHUB_REPOSITORY, so the seam is
+# per-run by design and the API path is documented as single-repo only.
+REQ_RAW="$(requirements)"
+REQ_READABLE=0
+REQ_LIST=""
+if printf '%s\n' "$REQ_RAW" | grep -qx '__read__'; then
+  REQ_READABLE=1
+  REQ_LIST="$(printf '%s\n' "$REQ_RAW" | grep -vx '__read__')"
+fi
+
+requires_old_name() { # $1 = old caller id
+  [ "$REQ_READABLE" = 1 ] || return 2      # 2 = unknown
+  printf '%s\n' "$REQ_LIST" | grep -Fxq "$1 / Hypatia Neurosymbolic Analysis"
+}
+
+process_repo() { # $1 = repository directory
+  local repo="$1" wf caller verdict
+  repo="$(cd "$repo" && pwd)"
+  wf="$repo/.github/workflows/hypatia-scan.yml"
+  if [ ! -f "$wf" ]; then
+    printf '%s\t%s\t-\tabsent\n' "$(basename "$repo")" ".github/workflows/hypatia-scan.yml"
+    return 0
+  fi
+
+  # The caller job is the one whose `uses:` names the estate's scan reusable.
+  caller="$(awk '
+    /^[[:space:]]*[A-Za-z0-9_.-]+:[[:space:]]*$/ { key=$1; sub(/:$/, "", key) }
+    /^[[:space:]]+uses:.*hypatia-scan-reusable\.ya?ml@/    { print key; exit }
+  ' "$wf")"
+
+  if [ -z "$caller" ]; then
+    printf '%s\t%s\t-\tunchanged-shape\n' "$(basename "$repo")" ".github/workflows/hypatia-scan.yml"
+    return 0
+  fi
+  if [ "$caller" = "$CANONICAL" ]; then
+    printf '%s\t%s\t%s\tcanonical\n' "$(basename "$repo")" ".github/workflows/hypatia-scan.yml" "$caller"
+    return 0
+  fi
+
+  # A rename changes the published check name. Refuse when a rule names the old one.
+  if requires_old_name "$caller"; then
+    verdict="BLOCKED"
+  elif [ "$REQ_READABLE" = 1 ]; then
+    verdict="stage"
+  else
+    verdict="UNVERIFIED"
+  fi
+
+  if [ "$verdict" = "stage" ] && [ "$MODE_FIX" = 1 ]; then
+    # Rewrite only the job key line: same indentation, same position.
+    local tmp; tmp="$(mktemp)"
+    awk -v from="$caller" -v to="$CANONICAL" '
+      BEGIN { done = 0 }
+      !done && $0 ~ "^[[:space:]]*" from ":[[:space:]]*$" { sub(from ":", to ":"); done = 1 }
+      { print }
+    ' "$wf" > "$tmp" && mv "$tmp" "$wf"
+    verdict="staged"
+  fi
+
+  printf '%s\t%s\t%s\t%s\n' "$(basename "$repo")" ".github/workflows/hypatia-scan.yml" "$caller" "$verdict"
+  return 0
+}
+
+if [ -f "$TARGET/.github/workflows/hypatia-scan.yml" ]; then
+  process_repo "$TARGET"
+else
+  found=0
+  for d in "$TARGET"/*/; do
+    [ -d "$d/.github/workflows" ] || continue
+    process_repo "$d"
+    found=1
+  done
+  [ "$found" = 1 ] || { note "no consumer repositories found under $TARGET"; exit 1; }
+fi
+
+if [ "$REQ_READABLE" != 1 ]; then
+  note "requirements unreadable (no API access, offline, or a multi-repo path): every differing caller id is UNVERIFIED, and --fix refuses. Read the requirements first — a rename is only safe when nothing requires the old name."
+fi
+if [ "$MODE_FIX" = 1 ]; then
+  note "--fix only stages edits. Commit, push and open the PR yourself or via the fleet bot (estate guardrail: no unattended mutations)."
+fi
+exit 0
diff --git a/scripts/tests/propagate-hypatia-caller-id-test.sh b/scripts/tests/propagate-hypatia-caller-id-test.sh
new file mode 100755
index 000000000..f22067d70
--- /dev/null
+++ b/scripts/tests/propagate-hypatia-caller-id-test.sh
@@ -0,0 +1,115 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: MPL-2.0
+# SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell (hyperpolymath) <j.d.a.jewell@open.ac.uk>
+#
+# propagate-hypatia-caller-id-test.sh — fixture suite for
+# scripts/propagate-hypatia-caller-id.sh.
+#
+# Builds synthetic consumer repositories in a temp directory and drives the
+# audit / --fix / refused paths. No network, no gh, no token: the requirement
+# probe is supplied through the HYPATIA_REQUIRED_JSON seam.
+#
+# Branches driven:
+#   * caller already canonical                  -> canonical, --fix is a no-op
+#   * caller `scan`, nothing requires the old name -> stage, --fix rewrites the
+#     job key and NOTHING else in the file
+#   * caller `scan`, a rule requires `scan / …`  -> BLOCKED, --fix refuses and the
+#     file is byte-identical afterwards
+#   * workflow with no reusable call             -> unchanged-shape
+#   * repository without the wrapper             -> absent
+#   * requirements unreadable (offline)          -> UNVERIFIED, --fix refuses
+#
+# Run: bash scripts/tests/propagate-hypatia-caller-id-test.sh
+set -uo pipefail
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SCRIPT="$SCRIPT_DIR/../propagate-hypatia-caller-id.sh"
+[ -f "$SCRIPT" ] || { echo "FAIL: script not found at $SCRIPT"; exit 1; }
+
+fail=0
+check() { # name expected actual
+  if [ "$2" = "$3" ]; then printf 'PASS %s\n' "$1"; else printf 'FAIL %s\n  expected: %s\n  actual:   %s\n' "$1" "$2" "$3"; fail=$((fail+1)); fi
+}
+
+work="$(mktemp -d)"
+trap 'rm -rf "$work"' EXIT
+mkdir -p "$work/fleet"
+
+wrapper() { # $1 dir, $2 caller id
+  mkdir -p "$1/.github/workflows"
+  cat > "$1/.github/workflows/hypatia-scan.yml" <<EOF
+# fixture wrapper
+name: Hypatia Scan
+on:
+  push:
+  pull_request:
+
+jobs:
+  $2:
+    name: Hypatia Neurosymbolic Analysis
+    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@84355587cb2a1f86e6882de83514a32db2646e7a
+    secrets: inherit
+EOF
+}
+
+wrapper "$work/fleet/aaa-canonical" hypatia
+wrapper "$work/fleet/bbb-needs-rename" scan
+wrapper "$work/fleet/ccc-blocked" scan
+wrapper "$work/fleet/ddd-absent" scan && rm "$work/fleet/ddd-absent/.github/workflows/hypatia-scan.yml"
+
+mkdir -p "$work/fleet/eee-inline/.github/workflows"
+cat > "$work/fleet/eee-inline/.github/workflows/hypatia-scan.yml" <<'EOF'
+name: Hypatia Scan
+on: [push]
+jobs:
+  scan:
+    name: Hypatia Neurosymbolic Analysis
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo inline
+EOF
+
+# Nothing requires the old prefixed name anywhere in the safe fixture.
+printf '["hypatia / Hypatia Neurosymbolic Analysis","CodeRabbit"]' > "$work/safe.json"
+# One rule requires it -> the rename must be refused for that repository.
+printf '["scan / Hypatia Neurosymbolic Analysis"]' > "$work/blocking.json"
+
+out="$(HYPATIA_REQUIRED_JSON="$work/safe.json" bash "$SCRIPT" "$work/fleet" 2>/dev/null)"
+check "canonical-caller-is-reported-canonical" "canonical" "$(printf '%s\n' "$out" | awk -F'\t' '$1=="aaa-canonical"{print $4}')"
+check "differing-caller-is-stage"            "stage"     "$(printf '%s\n' "$out" | awk -F'\t' '$1=="bbb-needs-rename"{print $4}')"
+check "no-wrapper-is-absent"                 "absent"    "$(printf '%s\n' "$out" | awk -F'\t' '$1=="ddd-absent"{print $4}')"
+check "non-reusable-is-unchanged-shape"      "unchanged-shape" "$(printf '%s\n' "$out" | awk -F'\t' '$1=="eee-inline"{print $4}')"
+
+out="$(HYPATIA_REQUIRED_JSON="$work/blocking.json" bash "$SCRIPT" "$work/fleet" 2>/dev/null)"
+check "required-old-name-blocks-the-rename"  "BLOCKED"   "$(printf '%s\n' "$out" | awk -F'\t' '$1=="ccc-blocked"{print $4}')"
+
+# --fix must refuse the blocked repo and stage the safe one.
+before_blocked="$(cat "$work/fleet/ccc-blocked/.github/workflows/hypatia-scan.yml")"
+HYPATIA_REQUIRED_JSON="$work/blocking.json" bash "$SCRIPT" --fix "$work/fleet" >/dev/null 2>&1
+after_blocked="$(cat "$work/fleet/ccc-blocked/.github/workflows/hypatia-scan.yml")"
+check "fix-leaves-blocked-file-untouched" "$before_blocked" "$after_blocked"
+check "fix-refuses-blocked-repo" "scan" "$(awk '/^[[:space:]]*[A-Za-z0-9_.-]+:[[:space:]]*$/{k=$1; sub(/:$/,"",k)} /uses:.*hypatia-scan-reusable/{print k; exit}' "$work/fleet/ccc-blocked/.github/workflows/hypatia-scan.yml")"
+
+before_safe="$(cat "$work/fleet/bbb-needs-rename/.github/workflows/hypatia-scan.yml")"
+out="$(HYPATIA_REQUIRED_JSON="$work/safe.json" bash "$SCRIPT" --fix "$work/fleet" 2>/dev/null)"
+check "fix-reports-staged" "staged" "$(printf '%s\n' "$out" | awk -F'\t' '$1=="bbb-needs-rename"{print $4}')"
+after_safe="$(cat "$work/fleet/bbb-needs-rename/.github/workflows/hypatia-scan.yml")"
+check "fix-renames-the-caller-key" "hypatia" "$(awk '/^[[:space:]]*[A-Za-z0-9_.-]+:[[:space:]]*$/{k=$1; sub(/:$/,"",k)} /uses:.*hypatia-scan-reusable/{print k; exit}' "$work/fleet/bbb-needs-rename/.github/workflows/hypatia-scan.yml")"
+# Only the key line may differ: the pin, the secrets line and the comments stay.
+check "fix-touches-only-the-job-key" "2" "$(diff <(printf '%s\n' "$before_safe") <(printf '%s\n' "$after_safe") | grep -c '^[<>]')"
+check "fix-keeps-the-pin" "1" "$(printf '%s\n' "$after_safe" | grep -c '84355587cb2a1f86e6882de83514a32db2646e7a')"
+check "fix-keeps-secrets-inherit" "1" "$(printf '%s\n' "$after_safe" | grep -c '^[[:space:]]*secrets: inherit$')"
+check "fix-is-idempotent" "canonical" "$(HYPATIA_REQUIRED_JSON="$work/safe.json" bash "$SCRIPT" "$work/fleet" 2>/dev/null | awk -F'\t' '$1=="bbb-needs-rename"{print $4}')"
+
+# Unreadable requirements: never rename on an unknown requirement set.
+wrapper "$work/fleet/fff-unverified" scan
+out="$(bash "$SCRIPT" --no-network "$work/fleet" 2>/dev/null)"
+check "unreadable-requirements-are-unverified" "UNVERIFIED" "$(printf '%s\n' "$out" | awk -F'\t' '$1=="fff-unverified"{print $4}')"
+before="$(cat "$work/fleet/fff-unverified/.github/workflows/hypatia-scan.yml")"
+bash "$SCRIPT" --no-network --fix "$work/fleet" >/dev/null 2>&1
+check "fix-refuses-when-requirements-unreadable" "$before" "$(cat "$work/fleet/fff-unverified/.github/workflows/hypatia-scan.yml")"
+
+if [ "$fail" -gt 0 ]; then
+  echo "::error file=$SCRIPT::$fail fixture(s) failed"
+  exit 1
+fi
+echo "PASS $0"