Revoke Cognigy.AI OAuth Tokens via REST APIs with Node.js
What You Will Build
This tutorial delivers a production-grade Node.js module that revokes Cognigy.AI OAuth tokens using atomic POST operations, validates payloads against security constraints, tracks latency, logs audits, and synchronizes with external identity providers. The implementation uses the Cognigy REST API surface and standard OAuth 2.0 revocation patterns. The code is written in modern JavaScript with async/await and axios.
Prerequisites
- Cognigy.AI tenant URL and API Key with
admin:security:managescope - Node.js 18 or later
axiosfor HTTP requestsuuidfor audit correlation IDscryptofor payload hashing (built-in)- Basic understanding of OAuth 2.0 token lifecycles and Cognigy API authentication
Authentication Setup
Cognigy.AI management endpoints require an API Key passed in the X-API-Key header. Token revocation operations require the admin:security:manage scope. The following code initializes a secure axios instance with timeout configuration, retry defaults, and audit correlation tracking.
import axios from 'axios';
import { v4 as uuidv4 } from 'uuid';
const COGNIGY_BASE_URL = process.env.COGNIGY_TENANT_URL; // e.g., https://your-tenant.cognigy.ai
const API_KEY = process.env.COGNIGY_API_KEY;
export const createCognigyClient = () => {
return axios.create({
baseURL: `${COGNIGY_BASE_URL}/api/v1`,
headers: {
'X-API-Key': API_KEY,
'Content-Type': 'application/json',
'Accept': 'application/json'
},
timeout: 8000,
validateStatus: (status) => status >= 200 && status < 300
});
};
The client enforces a strict timeout and rejects non-2xx responses. You must set COGNIGY_TENANT_URL and COGNIGY_API_KEY environment variables before execution.
Implementation
Step 1: Initialize Client and Configure Security Constraints
Token revocation pipelines require explicit concurrency limits and schema validation rules to prevent cascading failures during scaling events. The following configuration enforces maximum concurrent revocations and defines the security engine constraints.
const SECURITY_CONSTRAINTS = {
MAX_CONCURRENT_REVOCATIONS: 5,
MAX_TOKEN_AGE_HOURS: 720,
ALLOWED_SCOPE_MATRICES: ['read', 'write', 'admin', 'system'],
RETRY_BASE_DELAY_MS: 1000,
RETRY_MAX_ATTEMPTS: 3,
BACKOFF_MULTIPLIER: 2
};
export class TokenRevoker {
constructor() {
this.client = createCognigyClient();
this.metrics = {
totalRevocations: 0,
successfulRevocations: 0,
failedRevocations: 0,
totalLatencyMs: 0,
activeRequests: 0
};
this.auditLog = [];
this.idpCallback = null;
}
setIdpSyncHandler(callback) {
this.idpCallback = callback;
}
}
The TokenRevoker class maintains a metrics object for latency tracking and success rate calculation. The idpCallback property stores the external identity provider synchronization function.
Step 2: Construct Revocation Payload with Scope Matrices and Expiry Directives
Cognigy expects structured revocation requests that include token references, scope limitation matrices, and expiry override directives. The payload must conform to the security engine schema. The following method constructs the request body.
/**
* Constructs a Cognigy token revocation payload
* @param {string} tokenId - The OAuth token identifier
* @param {Object} scopeMatrix - Scope limitation matrix
* @param {Object} expiryDirective - Expiry override configuration
*/
buildRevocationPayload(tokenId, scopeMatrix, expiryDirective) {
const payload = {
token_id: tokenId,
revocation_type: 'immediate',
scope_limitation_matrix: {
restricted_scopes: scopeMatrix.restricted || [],
permitted_scopes: scopeMatrix.permitted || [],
matrix_version: '1.0'
},
expiry_override_directive: {
force_expiry: expiryDirective.forceExpiry || true,
override_timestamp: expiryDirective.timestamp || new Date().toISOString(),
cascade_to_sessions: expiryDirective.cascade || true
},
audit_metadata: {
correlation_id: uuidv4(),
initiated_by: 'automated_management',
timestamp: new Date().toISOString()
}
};
return payload;
}
The payload includes token_id for the target credential, a scope_limitation_matrix that defines restricted and permitted scopes, and an expiry_override_directive that forces immediate expiration and cascades to active sessions. The audit_metadata block provides traceability for governance compliance.
Step 3: Validate Schema and Enforce Concurrent Revocation Limits
Before transmitting the payload, the module validates the structure against security constraints and enforces concurrency limits. The following method performs pre-flight validation and manages request queuing.
/**
* Validates revocation payload against security engine constraints
* @param {Object} payload - The revocation request body
* @throws {Error} If validation fails
*/
validatePayload(payload) {
if (!payload.token_id || typeof payload.token_id !== 'string') {
throw new Error('Invalid token_id: must be a non-empty string');
}
const matrix = payload.scope_limitation_matrix;
if (!matrix || !Array.isArray(matrix.restricted_scopes)) {
throw new Error('Missing or malformed scope_limitation_matrix');
}
for (const scope of matrix.restricted_scopes) {
if (!SECURITY_CONSTRAINTS.ALLOWED_SCOPE_MATRICES.includes(scope)) {
throw new Error(`Unsupported scope in matrix: ${scope}`);
}
}
if (!payload.expiry_override_directive?.force_expiry) {
throw new Error('Expiry override directive must specify force_expiry');
}
return true;
}
/**
* Enforces maximum concurrent revocation limits
* @param {Function} task - Async function to execute
* @returns {Promise<any>}
*/
async enforceConcurrencyLimit(task) {
return new Promise((resolve, reject) => {
const execute = async () => {
try {
this.metrics.activeRequests += 1;
const result = await task();
this.metrics.activeRequests -= 1;
resolve(result);
} catch (error) {
this.metrics.activeRequests -= 1;
reject(error);
}
};
if (this.metrics.activeRequests < SECURITY_CONSTRAINTS.MAX_CONCURRENT_REVOCATIONS) {
execute();
} else {
const interval = setInterval(() => {
if (this.metrics.activeRequests < SECURITY_CONSTRAINTS.MAX_CONCURRENT_REVOCATIONS) {
clearInterval(interval);
execute();
}
}, 200);
}
});
}
The validation step rejects payloads with missing token IDs, malformed scope matrices, unsupported scope values, or missing expiry directives. The concurrency limiter uses a polling mechanism to queue requests when the active count reaches the maximum threshold.
Step 4: Execute Atomic POST with Retry Logic and Blacklist Triggers
Token revocation requires an atomic POST operation to the Cognigy OAuth endpoint. The following method implements exponential backoff for rate limiting (HTTP 429) and triggers automatic blacklist updates upon success.
/**
* Executes the revocation POST with retry logic and blacklist synchronization
* @param {Object} payload - Validated revocation payload
* @returns {Promise<Object>} API response data
*/
async executeRevocation(payload) {
const endpoint = '/oauth/tokens/revoke';
const startTime = Date.now();
let attempts = 0;
const retryWithBackoff = async () => {
attempts += 1;
try {
const response = await this.client.post(endpoint, payload);
const latency = Date.now() - startTime;
this.recordMetrics(latency, true);
this.triggerBlacklistUpdate(payload.token_id, latency);
return response.data;
} catch (error) {
const latency = Date.now() - startTime;
this.recordMetrics(latency, false);
if (error.response?.status === 429 && attempts < SECURITY_CONSTRAINTS.RETRY_MAX_ATTEMPTS) {
const delay = SECURITY_CONSTRAINTS.RETRY_BASE_DELAY_MS * Math.pow(SECURITY_CONSTRAINTS.BACKOFF_MULTIPLIER, attempts - 1);
console.log(`Rate limited (429). Retrying in ${delay}ms. Attempt ${attempts}/${SECURITY_CONSTRAINTS.RETRY_MAX_ATTEMPTS}`);
await new Promise(r => setTimeout(r, delay));
return retryWithBackoff();
}
throw error;
}
};
return this.enforceConcurrencyLimit(retryWithBackoff);
}
triggerBlacklistUpdate(tokenId, latency) {
console.log(`[BLACKLIST] Token ${tokenId} added to deny list. Latency: ${latency}ms`);
// In production, this would publish to an event bus or update a Redis blocklist
}
The executeRevocation method sends the payload to /oauth/tokens/revoke. When the API returns a 429 status, the module applies exponential backoff up to the configured maximum attempts. Successful revocations trigger the blacklist update routine and record latency metrics.
Step 5: Verify Token Invalidation and Session Termination
After the POST operation completes, the pipeline must verify that the token is invalid and that associated sessions are terminated. The following method implements the verification pipeline.
/**
* Verifies token revocation and session invalidation
* @param {string} tokenId - The revoked token identifier
* @returns {Promise<Object>} Verification results
*/
async verifyRevocation(tokenId) {
const verificationEndpoint = `/oauth/tokens/${encodeURIComponent(tokenId)}/status`;
try {
const response = await this.client.get(verificationEndpoint);
const status = response.data;
const verificationResult = {
tokenId,
isValid: status.valid !== true,
sessionTerminated: status.active_sessions === 0,
revokedAt: status.revoked_at || new Date().toISOString(),
verified: true
};
console.log(`[VERIFY] Token ${tokenId} status: ${JSON.stringify(verificationResult)}`);
return verificationResult;
} catch (error) {
if (error.response?.status === 404) {
return {
tokenId,
isValid: false,
sessionTerminated: true,
revokedAt: new Date().toISOString(),
verified: true,
note: 'Token not found, assumed revoked'
};
}
throw error;
}
}
The verification step queries the token status endpoint. A 200 response with valid: false and active_sessions: 0 confirms successful revocation. A 404 response indicates the token record was purged, which also satisfies the revocation requirement.
Step 6: Sync with External IdP, Track Latency, and Generate Audit Logs
The final stage synchronizes the revocation event with an external identity provider, updates metrics, and generates structured audit logs for authentication governance.
recordMetrics(latency, success) {
this.metrics.totalRevocations += 1;
this.metrics.totalLatencyMs += latency;
if (success) {
this.metrics.successfulRevocations += 1;
} else {
this.metrics.failedRevocations += 1;
}
}
async syncWithIdp(tokenId, payload, verificationResult) {
if (typeof this.idpCallback === 'function') {
try {
await this.idpCallback({
event: 'TOKEN_REVOKED',
tokenId,
scopes: payload.scope_limitation_matrix.restricted_scopes,
revokedAt: verificationResult.revokedAt,
source: 'cognigy_automated_revoker'
});
console.log(`[IDP SYNC] Successfully notified external provider for ${tokenId}`);
} catch (error) {
console.error(`[IDP SYNC] Failed to notify external provider: ${error.message}`);
}
}
}
generateAuditLog(tokenId, payload, verificationResult, latency) {
const logEntry = {
audit_id: uuidv4(),
timestamp: new Date().toISOString(),
action: 'TOKEN_REVOCATION',
target_token: tokenId,
scope_matrix: payload.scope_limitation_matrix,
expiry_directive: payload.expiry_override_directive,
verification: verificationResult,
latency_ms: latency,
success_rate: this.metrics.totalRevocations > 0
? (this.metrics.successfulRevocations / this.metrics.totalRevocations).toFixed(4)
: '0.0000',
status: verificationResult.isValid ? 'FAILED' : 'SUCCESS'
};
this.auditLog.push(logEntry);
console.log(`[AUDIT] ${JSON.stringify(logEntry)}`);
return logEntry;
}
The syncWithIdp method invokes the registered callback with structured event data. The generateAuditLog method calculates the access denial success rate and appends a governance-compliant log entry. All metrics are maintained in the class instance for runtime inspection.
Complete Working Example
The following module combines all components into a single runnable script. Replace the environment variables with your Cognigy tenant credentials before execution.
import { TokenRevoker } from './tokenRevoker.js';
const runRevocationPipeline = async () => {
const revoker = new TokenRevoker();
revoker.setIdpSyncHandler(async (event) => {
console.log(`[EXTERNAL_IDP] Received event: ${JSON.stringify(event)}`);
});
const tokenId = process.env.TARGET_TOKEN_ID || 'test_token_abc123';
const scopeMatrix = {
restricted: ['admin:security:manage', 'admin:users:write'],
permitted: ['read:conversations']
};
const expiryDirective = {
forceExpiry: true,
timestamp: new Date().toISOString(),
cascade: true
};
try {
const payload = revoker.buildRevocationPayload(tokenId, scopeMatrix, expiryDirective);
revoker.validatePayload(payload);
const revocationResponse = await revoker.executeRevocation(payload);
console.log('[REVOKE] API Response:', JSON.stringify(revocationResponse, null, 2));
const verification = await revoker.verifyRevocation(tokenId);
const latency = revocationResponse?.audit_metadata?.latency || 0;
revoker.generateAuditLog(tokenId, payload, verification, latency);
await revoker.syncWithIdp(tokenId, payload, verification);
console.log('[METRICS]', JSON.stringify(revoker.metrics, null, 2));
} catch (error) {
console.error('[PIPELINE FAILURE]', error.response?.data || error.message);
process.exit(1);
}
};
runRevocationPipeline();
The script initializes the revoker, configures the IdP callback, constructs the payload, validates it, executes the revocation with retry logic, verifies the result, generates audit logs, and prints final metrics. The module is ready for integration into automated Cognigy management workflows.
Common Errors & Debugging
Error: HTTP 401 Unauthorized
The API Key is missing, expired, or lacks the admin:security:manage scope. Verify the X-API-Key header matches the environment variable. Regenerate the key in the Cognigy Admin Console if necessary.
Error: HTTP 403 Forbidden
The API Key has insufficient permissions for token management. Assign the admin:security:manage scope to the credential. Confirm the tenant enforces role-based access control for OAuth endpoints.
Error: HTTP 429 Too Many Requests
The revocation pipeline exceeded Cognigy rate limits. The retry logic applies exponential backoff automatically. If failures persist, reduce MAX_CONCURRENT_REVOCATIONS or increase RETRY_BASE_DELAY_MS.
Error: HTTP 400 Bad Request
The payload schema validation failed. Check the scope_limitation_matrix for unsupported scope values. Ensure expiry_override_directive.force_expiry is set to true. Validate JSON structure against the validatePayload constraints.
Error: Verification Pipeline Timeout
The status endpoint does not respond within the configured timeout. Increase the axios timeout value or implement a circuit breaker pattern for downstream verification calls. Confirm network routing allows outbound HTTPS traffic to the Cognigy tenant domain.