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2026-09-23 09:13:14 +02:00

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10 KiB
YAML

name: Claude pre-flight check
description: >
Probes the Claude proxy before (or after) running claude-code-action and tells you
whether the credentials are dead or the quota is gone. claude-code-action only ever
reports "result is_error:true", which hides the actual HTTP failure.
inputs:
base_url:
description: Proxy base URL (the value passed as ANTHROPIC_BASE_URL, i.e. secrets.PROXY_URL).
required: true
jwt:
description: The Grazie JWT / API key (secrets.ANTHROPIC_API_KEY).
required: true
model:
description: Model id used for the probe request. Must be a model the proxy accepts.
required: false
default: claude-haiku-3-5-20241022
label:
description: Shown in the log/summary so a "before" and an "after" probe can be told apart.
required: false
default: pre-flight
fail_on_error:
description: Fail the step when the probe does not come back healthy. Diagnostics only by default.
required: false
default: 'false'
outputs:
verdict:
description: One of ok, credentials, quota, proxy, network, unknown.
value: ${{ steps.probe.outputs.verdict }}
http_status:
description: HTTP status returned by the proxy (000 when the request never completed).
value: ${{ steps.probe.outputs.http_status }}
detail:
description: One-line human-readable explanation of the verdict.
value: ${{ steps.probe.outputs.detail }}
runs:
using: composite
steps:
- id: probe
shell: bash
env:
BASE_URL: ${{ inputs.base_url }}
JWT: ${{ inputs.jwt }}
MODEL: ${{ inputs.model }}
LABEL: ${{ inputs.label }}
FAIL_ON_ERROR: ${{ inputs.fail_on_error }}
run: |
set -uo pipefail
# The secret is masked by Actions already, but this step is also used with
# values that did not come from `secrets.` in every caller.
[ -n "$JWT" ] && echo "::add-mask::$JWT"
echo "::group::Claude $LABEL check"
VERDICT="unknown"
DETAIL=""
HTTP_STATUS="000"
JWT_EXPIRED="false"
# ---------------------------------------------------------------
# 1. Are the inputs even present?
# ---------------------------------------------------------------
if [ -z "$BASE_URL" ]; then
echo "ANTHROPIC_BASE_URL / PROXY_URL is EMPTY - the secret is missing or not exposed to this workflow."
VERDICT="credentials"
DETAIL="PROXY_URL secret is empty"
fi
if [ -z "$JWT" ]; then
echo "ANTHROPIC_API_KEY is EMPTY - the secret is missing or not exposed to this workflow."
VERDICT="credentials"
DETAIL="ANTHROPIC_API_KEY secret is empty"
fi
echo "Base URL host: $(printf '%s' "$BASE_URL" | sed -E 's#^[a-z]+://([^/]+).*#\1#')"
echo "Token length: ${#JWT} chars"
# ---------------------------------------------------------------
# 2. If the token is a JWT, has it simply expired?
# Only timestamps and claim NAMES are printed - never claim values,
# which may carry user identity.
# ---------------------------------------------------------------
NOW=$(date -u +%s)
# GNU date on the runner, BSD date when this is run locally.
fmt_ts() { date -u -d "@$1" '+%Y-%m-%d %H:%M:%S UTC' 2>/dev/null || date -u -r "$1" '+%Y-%m-%d %H:%M:%S UTC' 2>/dev/null || printf 'epoch %s' "$1"; }
if [ "$(printf '%s' "$JWT" | awk -F. '{print NF}')" -eq 3 ]; then
PAYLOAD=$(printf '%s' "$JWT" | cut -d. -f2)
PAD=$(( (4 - ${#PAYLOAD} % 4) % 4 ))
[ "$PAD" -gt 0 ] && PAYLOAD="${PAYLOAD}$(printf '=%.0s' $(seq 1 "$PAD"))"
CLAIMS=$(printf '%s' "$PAYLOAD" | tr '_-' '/+' | base64 -d 2>/dev/null || true)
if printf '%s' "$CLAIMS" | jq -e . >/dev/null 2>&1; then
echo "Token is a JWT. Claims present: $(printf '%s' "$CLAIMS" | jq -r 'keys | join(", ")')"
IAT=$(printf '%s' "$CLAIMS" | jq -r '.iat // empty')
EXP=$(printf '%s' "$CLAIMS" | jq -r '.exp // empty')
[ -n "$IAT" ] && echo " issued at: $(fmt_ts "$IAT")"
if [ -n "$EXP" ]; then
echo " expires at: $(fmt_ts "$EXP")"
if [ "$EXP" -le "$NOW" ]; then
echo " >>> TOKEN IS EXPIRED (by $(( (NOW - EXP) / 86400 )) day(s)). Rotate the ANTHROPIC_API_KEY secret."
VERDICT="credentials"
DETAIL="JWT expired $(( (NOW - EXP) / 86400 )) day(s) ago"
JWT_EXPIRED="true"
else
echo " valid for another $(( (EXP - NOW) / 86400 )) day(s)."
fi
else
echo " no exp claim - the token does not expire on its own."
fi
else
echo "Token has three dot-separated parts but the payload is not JSON; treating it as an opaque key."
fi
else
echo "Token is not a JWT (no exp claim to inspect); relying on the live probe below."
fi
# ---------------------------------------------------------------
# 3. Live probe: one 1-token request through the same proxy and the
# same headers claude-code-action uses. The HTTP status is the
# answer the action swallows.
# ---------------------------------------------------------------
URL="${BASE_URL%/}/v1/messages"
BODY_FILE="$RUNNER_TEMP/claude-probe-body.json"
HDR_FILE="$RUNNER_TEMP/claude-probe-headers.txt"
if [ -n "$BASE_URL" ] && [ -n "$JWT" ]; then
HTTP_STATUS=$(curl -sS --max-time 60 -o "$BODY_FILE" -D "$HDR_FILE" -w '%{http_code}' \
-X POST "$URL" \
-H 'content-type: application/json' \
-H 'anthropic-version: 2023-06-01' \
-H "x-api-key: $JWT" \
-H "authorization: Bearer $JWT" \
-H "Grazie-Authenticate-JWT: $JWT" \
-H 'Grazie-Agent: {"name":"ideavim-claude-code-action","version":"github-actions-preflight"}' \
-d "{\"model\":\"$MODEL\",\"max_tokens\":1,\"messages\":[{\"role\":\"user\",\"content\":\"ping\"}]}" \
2>"$RUNNER_TEMP/claude-probe-curl.err") || true
# A curl that never connected prints nothing usable; normalise it to 000.
case "$HTTP_STATUS" in [0-9][0-9][0-9]) ;; *) HTTP_STATUS="000" ;; esac
echo "Probe: POST \$BASE_URL/v1/messages (model $MODEL) -> HTTP $HTTP_STATUS"
[ -s "$RUNNER_TEMP/claude-probe-curl.err" ] && sed 's/^/ curl: /' "$RUNNER_TEMP/claude-probe-curl.err"
# Rate-limit and retry headers say "quota" far more clearly than the body does.
grep -iE '^(retry-after|anthropic-ratelimit|x-ratelimit|x-should-retry|grazie-)' "$HDR_FILE" \
| sed 's/^/ header: /' || true
ERR_TYPE=$(jq -r '.error.type // .type // empty' "$BODY_FILE" 2>/dev/null || true)
ERR_MSG=$(jq -r '.error.message // .message // empty' "$BODY_FILE" 2>/dev/null || true)
if [ -n "$ERR_TYPE$ERR_MSG" ]; then
echo " error.type: ${ERR_TYPE:-<none>}"
echo " error.message: ${ERR_MSG:-<none>}"
else
# Not an Anthropic-shaped error - the proxy answered in its own format.
echo " raw response (first 400 chars): $(head -c 400 "$BODY_FILE" | tr -d '\n')"
fi
LOWER=$(printf '%s %s' "$ERR_TYPE" "$ERR_MSG" | tr '[:upper:]' '[:lower:]')
case "$HTTP_STATUS" in
200|201)
VERDICT="ok"
DETAIL="proxy accepted a live request"
;;
401)
VERDICT="credentials"
DETAIL="HTTP 401 - the token is rejected (expired or revoked)"
;;
403)
# Grazie returns 403 both for a revoked grant and for an exhausted licence quota.
case "$LOWER" in
*quota*|*limit*|*balance*|*credit*)
VERDICT="quota"
DETAIL="HTTP 403 mentioning quota/limit - the licence quota is exhausted"
;;
*)
VERDICT="credentials"
DETAIL="HTTP 403 - the token is valid but no longer authorized for this model/service"
;;
esac
;;
402)
VERDICT="quota"
DETAIL="HTTP 402 - billing/credit balance exhausted"
;;
429)
VERDICT="quota"
DETAIL="HTTP 429 - rate limit or quota exhausted"
;;
400|404|405|422)
VERDICT="proxy"
DETAIL="HTTP $HTTP_STATUS - request rejected by the proxy (likely an unsupported model id: $MODEL)"
;;
5*)
VERDICT="proxy"
DETAIL="HTTP $HTTP_STATUS - the proxy or upstream is failing"
;;
000)
VERDICT="network"
DETAIL="the request never completed (DNS, TLS or timeout)"
;;
*)
VERDICT="unknown"
DETAIL="unexpected HTTP $HTTP_STATUS"
;;
esac
fi
# A live 200 outranks the local exp claim (the proxy may not enforce it), but the
# stale token still deserves to show up in the verdict line.
if [ "$VERDICT" = "ok" ] && [ "$JWT_EXPIRED" = "true" ]; then
DETAIL="$DETAIL (note: the JWT's own exp claim is in the past)"
fi
echo "::endgroup::"
case "$VERDICT" in
ok) ICON="OK" ;;
credentials) ICON="CREDENTIALS" ;;
quota) ICON="QUOTA" ;;
*) ICON="$(printf '%s' "$VERDICT" | tr '[:lower:]' '[:upper:]')" ;;
esac
echo "Claude $LABEL verdict: $ICON - $DETAIL"
{
echo "### Claude $LABEL check"
echo ""
echo "- Verdict: \`$VERDICT\`"
echo "- HTTP status: \`$HTTP_STATUS\`"
echo "- Detail: $DETAIL"
echo ""
} >> "$GITHUB_STEP_SUMMARY"
{
echo "verdict=$VERDICT"
echo "http_status=$HTTP_STATUS"
echo "detail=$DETAIL"
} >> "$GITHUB_OUTPUT"
if [ "$FAIL_ON_ERROR" = "true" ] && [ "$VERDICT" != "ok" ]; then
echo "::error title=Claude $LABEL check failed::$DETAIL"
exit 1
fi