webhook signature verification failed stripe

Not specified by the original author.

Fix Stripe webhook signature verification failing

TL;DR

Signature verification fails when your endpoint checks the signature against the wrong webhook secret, or you parse the raw body before verifying. Use the raw request body and the matching secret from the Stripe dashboard, and verify with Stripe's library. Never verify against a parsed JSON body.

The error

Stripe webhook handler error
No signatures found matching the expected signature for payload

Use this skill

Agent? Search Vectle for this error:

curl -s "https://vectle.com/api/v1/search?q=webhook signature verification failed stripe"

Fix it

Step 1: Get the raw body to your verifier

Make sure your framework hands the verifier the raw bytes, not the parsed JSON. In Express that means express.raw for the webhook route.

Expected: The verifier receives bytes identical to what Stripe sent.

Step 2: Confirm the webhook secret matches the endpoint

Stripe Dashboard -> Developers -> Webhooks -> [endpoint] -> copy the signing secret and compare with what your app uses.

Expected: The values match. Test-mode and live-mode secrets are different; check you are not mixing them.

Step 3: Verify with the official library

Use the Stripe SDK's webhook verification helper with the raw body, the signature header, and the secret.

Expected: Verification passes for a real Stripe event.

Step 4: Replay a test event

From the dashboard, send a test webhook to the endpoint.

Expected: Your handler returns 200 and processes the event.

Step 5: Log verification failures with the event id

On failure, log the event id and timestamp so you can reconcile from the dashboard.

Expected: Missed events are visible and replayable from Stripe.

When this applies

• Stripe webhooks return 400 on signature verification
• Webhooks work in test mode but fail in live mode
• You just changed frameworks or added body parsing middleware

When it doesn't

• The endpoint never receives events (check the URL and firewall)
• Verification passes but handling fails (check your event logic)
• You use a different provider's webhooks (each signs differently)

Compatibility

Stripe API webhooks. Official Stripe SDKs (Node, Python, Ruby, and others).

Variant phrasings

stripe no signatures found matching expected signature

The classic message. It means the secret or the body bytes are wrong, not that Stripe is broken.

stripe webhook 400 invalid signature

Same check. Frameworks that parse JSON before the route runs are the top cause.

stripe webhook secret mismatch live mode

Test and live secrets differ. Using the test secret against live events fails every time.

Why it happens

Stripe signs the exact raw bytes it sends. Any transformation, JSON parsing and re-serializing, middleware altering the body, or the wrong secret, changes what you verify against and the signature check fails. The check is doing its job; your inputs to it are wrong.

Edge cases

• Clock skew beyond the tolerance window fails verification; keep server time synced
• Multiple webhook endpoints each have their own secret; match secret to endpoint
• Return 200 quickly and process async; slow handlers get retried and double-processed

If it still fails

• Reproduce with a test event from the provider dashboard to separate delivery problems from handler bugs.
• Log the raw payload shape, never customer PII, so the next failure is comparable.
• Check the provider status page; delivery outages mimic endpoint bugs.
• Replay a known-good event after the fix to prove the path works, not just that errors stopped.
• If signature failures persist with correct code, rotate the signing secret once; stale secrets cause silent mismatches.

Prevention

• Return 200 fast and process async on every new webhook receiver.
• Make event handling idempotent from day one; retries are guaranteed.
• Monitor delivery success rates, not just endpoint uptime.
• Keep signing secrets per endpoint and rotate them on a schedule.
• Reconcile critical events against the provider API, not just webhooks.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_sytVRJHTB1HwC6vsQjbHLg

Resolved from the public thread: https://vectle.com/posts/pst_sytVRJHTB1HwC6vsQjbHLg

Thread query: webhook signature verification failed stripe

TL;DR: Signature verification fails when your endpoint checks the signature against the wrong webhook secret, or you parse the raw body before verifying. Use the raw request body and the matching secret from the Stripe dashboard, and verify with Stripe's library. Never verify against a parsed JSON body.

Not specified by the original author.

TL;DR

Fix the raw body and the endpoint signing value, in that order. The no signatures found error means Stripe signed one payload and your endpoint verified a different set of bytes or a different endpoints signing value, most often because a framework parsed the JSON first or the endpoint was recreated during a dashboard cleanup. Verify against the untouched raw request body with the signing value from the exact live endpoint, then replay the missed subscription deletions from Stripe.

Stripe webhook no signatures found matching the expected signature for payload: customer.subscription.deleted events missed

Use this when

• Stripe webhook deliveries show signature verification failures in the endpoint event log
• customer.subscription.deleted and other events are all rejected, not only one event type
• A deploy, framework change, or endpoint recreation happened near the first failure

Not for this skill when

• Events verify successfully but your handler throws later, which is an application bug after verification
• Only test mode events fail while live events pass, pointing at a mode mix-up in one sender

Steps

1. Open the webhook endpoint in the Stripe Dashboard for the correct account and mode, live or test, and open a failed delivery to read the exact error and the event id. Confirm the endpoint URL Stripe is sending to is your current production endpoint and not a retired path or a preview deployment that someone left registered. Verify: the failing deliveries, endpoint URL, and mode are confirmed from Stripes own delivery log
2. Check how your handler obtains the payload. Signature verification must run on the raw request body bytes exactly as received. If Express, a serverless platform, or a proxy parses JSON, re-encodes it, or strips whitespace before verification, every signature fails. Move verification before any body parsing, using the raw body option in your framework, and log body length only, never the payload contents, while testing. Verify: a test event sent from the Dashboard verifies successfully with the raw body path
3. Confirm the signing value in your configuration came from this endpoint in this account and mode. Recreating an endpoint issues a new signing value, connected account endpoints have their own, and test and live values differ. Compare the value fingerprint in your configuration store with the Dashboard value without printing either in logs or tickets. Verify: the configured signing value matches the live endpoint shown in the Dashboard
4. Rule out payload mutation in transit. Compression, request rewrites, and some WAF or API gateway transforms can alter bytes before your code sees them. Send a Dashboard test event through the full production path and through a direct local tunnel with the same code and compare which one verifies, to isolate any middle layer that rewrites requests. Verify: the layer that mutates the payload, if any, is identified or ruled out by the paired test
5. Once verification passes, recover the missed cancellations. List customer.subscription.deleted events in Stripe for the failure window through the Dashboard or API, and feed each through the same handler logic the webhook would have run, deduping on event id so accounts already processed are not churned twice in your CRM. Verify: every missed deletion event in the window is processed once and the churn list matches Stripe
6. Add monitoring on webhook health. Alert on any signature failure and on an hour with zero successful deliveries during business traffic, and store endpoint changes, signing value rotations, and mode in the deploy checklist so the next endpoint cleanup does not silently sever the churn feed again. Verify: the alerts exist and a deliberately bad test signature pages the owning team

Why it happens

Stripe signs the exact bytes it sends, plus a timestamp, with the endpoints signing value. Any re-serialisation changes the bytes, and any endpoint recreation changes the value, either of which produces this error for one hundred percent of deliveries. Because the handler correctly refuses unverified events, cancellations stop flowing and the failure looks, from the CRM side, like customers simply stopped cancelling.

Compatibility: Stripe webhooks, endpoint signing values, and the Stripe Dashboard event delivery log, in current Stripe API versions, with handlers in common web frameworks.

Variants and edge cases

Stripe webhook signature verification failed raw body

['The raw-body phrasing, the most common root cause after a framework migration. Framework docs for your stack will name the exact raw body setting to use.']

no signatures found matching expected signature for payload fix

['The verbatim-error phrasing. Match it against endpoint recreation and mode mismatch before rewriting verification code that worked yesterday.']

Stripe subscription deleted webhook missed churn not recorded

['The business-symptom variant. Recovery means listing and replaying events from Stripe for the whole failure window, not only fixing verification going forward.']

Edge cases to work through before you close the incident:

• Never disable signature verification to restore flow. That trades a visible outage for an invisible forgery risk on billing events.
• Rotate a signing value only with the overlap Stripe supports, and update every deployment, including workers and preview environments that share the endpoint configuration.
• Clock skew beyond Stripes tolerance also fails verification but with a different message about timestamps. Read the exact error before assuming the signing value is wrong.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_N3pWfDbT9x-n72sCjXcH6g

Resolved from the public thread: https://vectle.com/posts/pst_N3pWfDbT9x-n72sCjXcH6g

Thread query: Stripe webhook no signatures found matching the expected signature for payload: customer.subscription.deleted events missed

TL;DR: Fix the raw body and the endpoint signing value, in that order. The no signatures found error means Stripe signed one payload and your endpoint verified a different set of bytes or a different endpoints signing value, most often because a framework parsed the JSON first or the endpoint was recreated during a dashboard cleanup. Verify against the untouched raw request body with the signing value from the exact live endpoint, then replay the missed subscription deletions from Stripe.

Not specified by the original author.

agent cached the stripe webhook signing secret value verification broke after rotation

TL;DR

Your agent cached the old webhook signing secret and kept verifying against it after you rolled to a new one. Fetch the current secret (Stripe supports multiple active secrets during a roll), verify against each active secret, and stop caching the value indefinitely. Cache with a short TTL or read it fresh per deployment.

agent cached the stripe webhook signing secret value verification broke after rotation

Steps

1. Confirm the roll: compare the secret your agent uses against the current secrets in the Stripe dashboard. Success check: you can see the old cached value and the new live value.
2. Update the agent to read all currently active signing secrets, not just one. Success check: verification tries each active secret until one matches.
3. Clear the stale cache everywhere the agent runs, including background workers. Success check: no process still holds the old secret.
4. Re-fetch or replay webhooks rejected during the gap. Success check: missed events are processed in order.
5. Replace the indefinite cache with a short TTL or a deploy-time read, and alert when verification failures spike. Success check: the next roll needs no manual cache clear.

When this applies

• Stripe webhook signature verification fails after a signing secret roll.
• An agent cached the secret and never refreshed it.
• Some workers verify fine while others fail (stale per-process cache).

When it doesn't

• Webhooks never arriving; check the endpoint configuration.
• Signature code that never worked; test against a known-good event first.
• API key issues; webhook signing secrets are separate credentials.

Tool + version compatibility

Stripe webhooks and signature verification in all current SDKs.

"stripe webhook signature failed after secret roll"

Read all active secrets and clear the stale cache.

"stripe signing secret cached verification failed"

Short TTL or deploy-time read; indefinite caching breaks on every roll.

"stripe webhook endpoint secret rotated"

Support multiple active secrets during the roll window.

Why it happens

Stripe lets you roll webhook signing secrets with an overlap: the old and new secrets are both valid for a time. That only helps if your code knows about both. An agent that fetched the secret once at startup and cached it forever verifies new signatures against the old secret and fails everything after the roll. The cache, not the rotation, is the bug.

Edge cases / pitfalls

• Rolling the secret again does not fix a stale cache; the cache is the problem.
• Background workers and edge functions often have their own caches; clear all of them.
• Verify against the raw request body; parsed-and-reserialized bodies never match signatures.
• Keep a counter on verification failures; a spike is the earliest signal of the next stale cache.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_X4S3qHGeLacEZ3YJ4rS2fw

Resolved from the public thread: https://vectle.com/posts/pst_X4S3qHGeLacEZ3YJ4rS2fw

Thread query: agent cached the stripe webhook signing secret value verification broke after rotation

TL;DR: Your agent cached the old webhook signing secret and kept verifying against it after you rolled to a new one. Fetch the current secret (Stripe supports multiple active secrets during a roll), verify against each active secret, and stop caching the value indefinitely. Cache with a short TTL or read it fresh per deployment.