tool-0255-freshdesk-webhook-listener-25409b38e93aa10f

name	tool.0255_freshdesk_webhook_listener.25409b38e93aa10f
description	Use when tasks require freshdesk webhook listener with credential-aware preflight, deterministic execution, validation gates, and handoff-ready artifacts.

Freshdesk Webhook Listener

Quick Reference

Field	Value
Skill ID	255
Provider	Freshdesk
Operation	Webhook Listener
Domain	External SaaS integrations
Runtime archetype	signed-event-ingestion-engine
Core method	signed event intake and routing
Primary artifact	freshdesk-event-intake-log
Routing tag	freshdesk:webhook-listener
Mutating	yes
Release cycles	3

Why This Skill Exists

We need this skill because Freshdesk workflows degrade when unverified events can trigger unsafe downstream actions. This specific skill turns Freshdesk Webhook Listener into a deterministic, auth-checked workflow for captures, verifies, and routes freshdesk webhook events..

Trigger Checklist

• The task explicitly requires Freshdesk Webhook Listener rather than generic brainstorming.
• The provider tenant, workspace, or environment is known before execution begins.
• Credential reuse has been checked before asking for new secrets.
• Success criteria, side effects, and handoff owner are clear.
• If the run mutates provider state, the relevant approval gates are available.

Auth & Access Profile

Field	Value
External auth required	yes
API key likely required	no
Protocols	HTTPS/REST
Mutating	yes
Webhook capable	yes

Auth Mode	Kind	Env Hints	Validation
OAuth client or delegated session	oauth2	FRESHDESK_CLIENT_ID, FRESHDESK_CLIENT_SECRET	Reuse an active delegated session or validate the client credentials with a lightweight identity call.
Access token or personal access token	token	FRESHDESK_TOKEN, FRESHDESK_ACCESS_TOKEN	Validate the token with the smallest read-only endpoint that proves scope and tenancy.
Webhook signing secret	signing_secret	FRESHDESK_WEBHOOK_SECRET, FRESHDESK_SIGNING_SECRET	Verify signature generation against a known sample payload before accepting live webhook traffic.

Inputs (contract)

Input	Type	Required	Source
signed event payload	signal	yes	operator or upstream tool
secret reference	signal	yes	operator or upstream tool
routing rules	signal	yes	operator or upstream tool

Outputs (contract)

Output	Type	Guaranteed	Consumer
freshdesk-event-intake-log	structured-artifact	yes	next workflow or operator
freshdesk-event-intake-log-scorecard	scorecard	yes	reviewer
freshdesk-event-intake-log-handoff	handoff-packet	yes	downstream owner

Step-by-Step Implementation Guide

1. Define the accepted event types, replay window, and downstream side effects for Freshdesk Webhook Listener, then register the signing-secret policy for Freshdesk.
2. Validate credential reuse for the listener and verify that signature, timestamp, and dedupe stores are all healthy before accepting events.
3. Implement captures, verifies, and routes freshdesk webhook events. so that every payload is verified, normalized, and either routed or quarantined deterministically.
4. Preserve accepted event IDs, quarantine references, and downstream trigger artifacts for every dispatch decision.
5. Run simulation and regression suites that cover invalid signatures, replay attacks, duplicate deliveries, and routing-policy violations.
6. Publish an event-intake log with accepted IDs, quarantined deliveries, and any replay guidance needed for downstream operators.

Operational Runbook

Preflight

• Validate the signing secret, replay window, and dedupe cache before accepting live events.
• Confirm the routing rules and downstream side effects that each event type may trigger.

Execution

• Verify signatures and timestamps before deserializing the payload.
• Route verified events through a dedupe check and quarantine anything that violates policy.

Recovery

• Pause live acceptance when signature verification or replay detection regresses.
• Replay only from the quarantine queue after the root cause is corrected.

Handoff

• Return accepted event IDs, quarantined deliveries, and downstream trigger references.
• Document the active replay window and any signature policy overrides used during recovery.

Validation Gates & Test Matrix

Gate	Purpose	On Fail
auth-preflight	Validate credential presence, scope, and environment before work begins.	block execution
schema-contract-check	Ensure required signals and payload shapes remain valid.	quarantine and request correction
policy-approval-check	Verify the declared approval gates before mutating or publishing state.	pause or route to human review
reliability-check	Confirm retries, rollback, and checkpoint readiness.	rollback or fail closed

• Required validation suites: unit, integration, simulation, regression-baseline

Failure Modes & Recovery Playbook

Code	Trigger	Action
E_SIGNATURE_INVALID	Incoming payload fails signature or timestamp verification.	Reject the event, quarantine the payload, and record the verification failure.
E_DUPLICATE_DELIVERY	The same event is observed outside the allowed replay policy.	Suppress the duplicate and keep the original trace as the authoritative record.
E_HANDLER_POLICY	Event shape or target route violates downstream policy.	Block dispatch and route the event to manual triage.

Tool Call Implementation

• Reuse existing credentials first. Check environment variables, secure stores, and active sessions before prompting.
• Start with the smallest authenticated read or validation call that proves identity and scope.
• Preserve request, response, and approval traces in freshdesk-event-intake-log so downstream owners do not need to rediscover context.
• If any auth, contract, or approval gate fails, halt execution and attach remediation guidance instead of guessing.

Credential Reuse Policy

• Reuse valid provider credentials by default and prefer tenant-scoped sessions over newly created secrets.
• Prompt for credentials only when they are missing, invalid, expired, or point at the wrong environment.
• For webhook flows, validate the signing secret against a known sample before accepting live traffic.

Guardrails

• safety: Reject unsigned or replayed events before any downstream side effects are triggered. (signature-check+replay-window)
• reliability: Persist a quarantine queue for every event that cannot be safely dispatched. (quarantine-queue)
• compliance: Route policy-violating payloads to manual review instead of auto-retrying. (handler-policy-review)

Acceptance Checklist

• Credential preflight and scope validation completed successfully.
• Required validation suites ran and all fail-closed gates passed.
• freshdesk-event-intake-log, scorecard, and handoff packet were produced.
• Any mutations, approvals, or rollbacks are reflected in the artifact bundle.

Anti-Patterns

• Do not ask for new credentials before checking reusable auth context.
• Do not skip the read-only or dry-run validation step for mutating work.
• Do not proceed when approval gates, signing secrets, or rollback checkpoints are missing.
• Do not hand off partial or ambiguous provider state as complete.

Handoff Contract

• Produces: freshdesk-event-intake-log, execution scorecard, approval trace, and next actions.
• Consumes: signed event payload, secret reference, routing rules.
• Readiness rule: release only after auth, contract, approval, and reliability gates all pass.
• Downstream hint: route to freshdesk:webhook-listener consumers with approval and credential context attached.

Observability & Continuous Improvement

• SLO: >=99.9% successful runs per 7-day window
• Error budget: <=0.1% critical failures per 7-day window
• Alert triggers:
• credential validation failures exceed baseline
• schema or contract regressions persist for two consecutive runs
• critical posture or rollback events exceed tolerance
• Primary outcome metric: signature verification pass rate
• Secondary metrics: event processing latency, duplicate suppression accuracy
• Review cadence: daily