Real-time
Two-way sync
Changes in Bill or ClickHouse instantly reflect in both systems. No stale data, no manual imports.
Accounting and finance ⇄ Data warehouse
Bill to ClickHouse integration — real-time, two-way sync
Keep Bill and ClickHouse in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.
- SOC 2 and 6 other compliance frameworks
- POC with real engineers in minutes
Adopted by fast-scaling companies moving mission-critical data in real time
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Why teams connect Bill and ClickHouse
Land the financial records from Bill in ClickHouse continuously, and write results back, without building or maintaining a pipeline.
Finance data belongs in the warehouse: revenue, invoices, payments, and customers joined with everything else the business measures. Getting it there usually means an extraction pipeline that breaks quietly and delivers yesterday's numbers.
Stacksync syncs Vendor Credits and Credit Memos, Bills, Vendors, Invoices from Bill into tables in ClickHouse in real time, and the connection works in both directions: values computed in ClickHouse can be written back to fields in Bill where you want them operational. Schema changes are handled, API limits are managed, and the sync is something you configure rather than code you maintain.
Common use cases
- 01 Read Payments and payment status into a reconciliation database once bills are marked paid in BILL.
- 02 Read approved Bills and their line items into a Postgres warehouse for spend, accrual, and cash-flow reporting without CSV exports.
- 03 Sync aggregated ClickHouse query results back into operational tools, such as account-level usage metrics into a CRM.
- 04 Consolidate logs and business records from multiple sources into MergeTree tables for retention and reporting.
Common sync patterns
Revenue joined with everything else
Analysts combine Bill's financial records with product, marketing, or operational data already in ClickHouse for reporting the finance system cannot do alone.
Write-back of computed fields
Scores or segments computed in ClickHouse, like payment-risk flags or customer tiers, sync back onto records in Bill where the finance team can act on them.
Queryable history for audit and reconciliation
A continuously synced copy in ClickHouse gives you a durable, queryable record of financial data for month-end and audit questions.
What you can sync between Bill and ClickHouse
Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.
| Bill objects | ClickHouse objects | How this pairing syncs | |
|---|---|---|---|
| Bills Accounts-payable amounts owed to vendors, with bill line items; read and created via /v3/bills and pulled incrementally by filtering on createdTime/updatedTime. | Tables (MergeTree family) Columnar, append-optimized tables that serve as the destination for high-volume sync loads. | Bills is specific to Bill and Tables (MergeTree family) to ClickHouse — each maps to any object or custom field on the other side. | |
| Vendors Payee master records; synced two-way with vendor/supplier tables in an ERP or accounting system so new payees don't have to be re-keyed. | Databases Namespaces that group tables and scope permissions for sync users. | Vendors is specific to Bill and Databases to ClickHouse — each maps to any object or custom field on the other side. | |
| Invoices Accounts-receivable invoices sent to customers; created and read via /v3/invoices to keep billing status aligned with the ERP or CRM. | Views Saved queries used as curated, read-only sync sources. | Invoices is specific to Bill and Views to ClickHouse — each maps to any object or custom field on the other side. | |
| Customers AR customer master records; mapped to customer/account records in a CRM or ERP so finance and sales share one view. | Materialized views Insert-time transformations that reshape incoming synced rows into aggregates. | Customers is specific to Bill and Materialized views to ClickHouse — each maps to any object or custom field on the other side. | |
| Payments Outgoing vendor payments and received customer payments; read for reconciliation and created to schedule bill pay. | Distributed tables Query-routing tables over cluster shards in self-managed deployments. | Payments is specific to Bill and Distributed tables to ClickHouse — each maps to any object or custom field on the other side. | |
| Chart of Accounts GL accounts used to code bills and invoices; typically mastered in the accounting system and written into BILL for consistent coding. | Dictionaries In-memory lookup structures refreshed from external sources, sometimes fed by syncs. | Chart of Accounts is specific to Bill and Dictionaries to ClickHouse — each maps to any object or custom field on the other side. |
How changes propagate between Bill and ClickHouse
Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.
Bill ClickHouse Sub-second propagation
DetectionBill notifies Stacksync of record changes through webhook events. Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on.
DeliveryEach detected change is applied to ClickHouse as a row-level write, with types converted between the two schemas.
ClickHouse Bill Interval-based propagation
DetectionStacksync polls ClickHouse for changes on an incremental schedule, reading only records changed since the previous pass. No log-based CDC for consumers.
DeliveryEach detected change is written to Bill through its API, with automatic retries and rate-limit backoff.
Rate-limit considerations
- Bill: 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
What ships with Bill ⇄ ClickHouse
Connect Bill and ClickHouse for flexible, real-time data sync.
Real-time sync, workflow automation, event queues, EDI, and monitoring, for every Bill–ClickHouse connection.
No-code + pro-code
Workflow automation
Trigger automated workflows whenever Bill or ClickHouse data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.
At scale
Event queues
Handle millions of events per minute without losing a single Bill or ClickHouse record.
Observability
Monitoring
Track your Bill ⇄ ClickHouse sync health, view errors, and replay failed events in one click.
Trading partners
EDI
Transform legacy EDI complexity into simple database interactions between Bill and ClickHouse.
How the Bill and ClickHouse connectors work
Bill
- Integration surface
- REST/JSON (BILL v3 Connect API)
- Authentication
- Session-based: POST /v3/login with username, password, organizationId, and a developer key (devKey) returns a sessionId that is passed with the devKey as headers on every subsequent call; OAuth is available for partner/embedded apps
- Change detection
- Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback
- Capabilities
- read · write · webhooks
- Rate limits
- 20,000 requests per developer key per hour; login (POST /v3/login) capped at 200/hour; maximum 3 concurrent requests per developer key per organization. Spend & Expense API is a separate token at 60 calls/token/minute.
ClickHouse
- Integration surface
- Native TCP protocol and HTTP interface; standard SQL dialect, with MySQL and PostgreSQL wire compatibility available
- Authentication
- Database credentials (username/password); ClickHouse Cloud issues per-service credentials over TLS
- Change detection
- No log-based CDC for consumers; incremental reads use polling on monotonic columns, and ClickHouse is usually the destination rather than the source
- Capabilities
- read · write
How it works
How to connect Bill to ClickHouse — three steps, no code
Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.
- 01
Connect your apps
Authenticate Bill and ClickHouse with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.
Bill
connected
ClickHouse
connected
OAuth 2.0SSH tunnelSSL certificateVPC peering - 02
Choose tables
Pick the Bill and ClickHouse objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.
objects · Bill ⇄ ClickHouseCustomers 12,480Sales Orders 8,213Invoices 5,902Items 1,344 - 03
Map fields
Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.
Bill ClickHouseCompany company_name textEmail email textAmount amount numericCreated created_at timestamp
FAQ
Bill and ClickHouse integration FAQ
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Yes. Stacksync provides a managed, real-time two-way integration between Bill and ClickHouse: authenticate both systems, choose the objects to sync (such as Bill's Bills and Vendors), map fields visually, and changes propagate both ways in milliseconds — no code required.
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Bill: Webhook event subscriptions are limited to up to 10 per organization and cover bills, vendors, payments, invoices, and bank accounts; Spend & Expense webhooks run only in the production environment. ClickHouse: Updates and deletes are asynchronous mutations that rewrite data parts, so syncs into ClickHouse favor append-and-deduplicate patterns (for example ReplacingMergeTree) over row-level upserts. Stacksync's field mapping accounts for these differences between Bill and ClickHouse without custom code.
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Stacksync is SOC 2 Type II and ISO 27001 certified with HIPAA BAA support. Data is encrypted in transit, and a zero-persistent-storage architecture means Bill and ClickHouse records are not retained after a sync operation.
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Stacksync pricing is usage-based and starts at $1,000/month, including the managed Bill and ClickHouse connectors, real-time two-way sync, monitoring, and support. That replaces building and maintaining a custom Bill–ClickHouse integration in-house.
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Yes — Stacksync ships production-grade connectors for both Bill and ClickHouse. The connectors handle authentication, schema detection, rate limits, and retries; you configure the sync, and Stacksync operates it.
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Change detection on Bill: Webhook event subscriptions (POST /v3/subscriptions) for bills, vendors, payments, invoices, and bank accounts, with polling on createdTime/updatedTime list filters as the fallback. On ClickHouse: No log-based CDC for consumers; incremental reads use polling on monotonic columns, and ClickHouse is usually the destination rather than the source. Each detected change propagates to the other side in milliseconds, with field-level conflict resolution and an inspectable event log.
SECURITY
Security teams trust Stacksync
As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS
SSO & SCIM
Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.
Alerts
Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.
Secure connection options
Securely connects to your systems with:
Related integrations
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