TigerBeetle

TigerBeetle is an open-source (Apache 2.0) distributed financial accounting and transactions database, purpose-built for high-throughput, mission-critical double-entry bookkeeping and online transaction processing (OLTP). It is NOT an HTTP/REST API and ships no OpenAPI - the database is accessed over a custom binary wire protocol on TCP (default port 3000) via official client libraries for .NET, Go, Java, Node.js, Python, Ruby, and Rust. The "API" is the set of client operations - create_accounts, create_transfers, lookup_accounts, lookup_transfers, get_account_transfers, get_account_balances, query_accounts, and query_transfers - that use fixed-size, cache-line-aligned structs for zero-deserialization performance. TigerBeetle is self-hostable; a fully managed service is also offered to select enterprise partners via sales@tigerbeetle.com.

TigerBeetle publishes 4 APIs on the APIs.io network. Tagged areas include Finance, Accounting, Transaction, Database, and Double-Entry.

TigerBeetle’s developer surface includes documentation, engineering blog, and 6 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.3/100 emerging ▬ flat Agent 0/100 human only Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-04 · rubric v0.23.0

AccessFreemium

4 APIs

Finance Accounting Transaction Database Double-Entry LedgerOLTPDistributed Open Source Binary Protocol

Kin Score

Kin Score How this is scored →
scored 2026-10-04 · rubric v0.23.0

Composite quality — 14.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 4.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 5.3 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/tigerbeetle: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

TigerBeetle Accounts API

Client-library operations for managing 128-byte double-entry accounts - create_accounts (establish immutable accounts on a ledger with debit/credit constraint flags), lookup_acc...

TigerBeetle Transfers API

Client-library operations for moving funds between accounts as immutable 128-byte double-entry transfers - create_transfers (single-phase, plus two-phase pending / post-pending ...

TigerBeetle Account Balances API

The get_account_balances operation returns the historical balances of an account over time (for accounts created with the history flag), each a point-in-time AccountBalance reco...

TigerBeetle Account Filter Queries API

Query surface for retrieving the transfers and balances tied to a single account. The get_account_transfers operation takes an AccountFilter (account_id, timestamp range, limit,...

Pricing Plans 1

Published pricing tiers and plan structures.

Tigerbeetle Plans Pricing

2 plans

PLANS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Tigerbeetle Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Tigerbeetle Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: tigerbeetle
url: https://raw.githubusercontent.com/api-evangelist/tigerbeetle/refs/heads/main/apis.yml
name: TigerBeetle
kind: company
description: TigerBeetle is an open-source (Apache 2.0) distributed financial accounting and transactions database, purpose-built
  for high-throughput, mission-critical double-entry bookkeeping and online transaction processing (OLTP). It is NOT an HTTP/REST
  API and ships no OpenAPI - the database is accessed over a custom binary wire protocol on TCP (default port 3000) via official
  client libraries for .NET, Go, Java, Node.js, Python, Ruby, and Rust. The "API" is the set of client operations - create_accounts,
  create_transfers, lookup_accounts, lookup_transfers, get_account_transfers, get_account_balances, query_accounts, and query_transfers
  - that use fixed-size, cache-line-aligned structs for zero-deserialization performance. TigerBeetle is self-hostable; a
  fully managed service is also offered to select enterprise partners via sales@tigerbeetle.com.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tigerbeetle.png
tags:
- Finance
- Accounting
- Transaction
- Database
- Double-Entry
- Ledger
- OLTP
- Distributed
- Open Source
- Binary Protocol
tags_raw:
- Financial
- Accounting
- Transactions
- Database
- Double-Entry
- Ledger
- OLTP
- Distributed
- Open Source
- Binary Protocol
- Open-Source
created: '2026-07-02'
modified: '2026-07-02'
specificationVersion: '0.23'
apis:
- aid: tigerbeetle:tigerbeetle-accounts-api
  name: TigerBeetle Accounts API
  tags:
  - Account
  - Ledger
  - Double-Entry
  tags_raw:
  - Accounts
  - Ledger
  - Double-Entry
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.tigerbeetle.com/reference/account/
  description: Client-library operations for managing 128-byte double-entry accounts - create_accounts (establish immutable
    accounts on a ledger with debit/credit constraint flags), lookup_accounts (fetch accounts by 128-bit id), and query_accounts
    (filter accounts by ledger, code, and user_data). Accounts carry pending and posted debit/credit balances. These are binary
    wire-protocol operations invoked through the official clients, not HTTP endpoints; there is no REST baseURL or OpenAPI.
  properties:
  - url: https://docs.tigerbeetle.com/reference/account/
    type: Documentation
  - url: https://docs.tigerbeetle.com/reference/requests/create_accounts/
    type: APIReference
  - url: https://docs.tigerbeetle.com/reference/requests/lookup_accounts/
    type: APIReference
  - url: https://docs.tigerbeetle.com/reference/requests/query_accounts/
    type: APIReference
- aid: tigerbeetle:tigerbeetle-transfers-api
  name: TigerBeetle Transfers API
  tags:
  - Transfers
  - Two-Phase
  - Pending
  - Double-Entry
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.tigerbeetle.com/reference/transfer/
  description: Client-library operations for moving funds between accounts as immutable 128-byte double-entry transfers -
    create_transfers (single-phase, plus two-phase pending / post-pending / void-pending transfers, linked transfers, balancing
    transfers, and timeouts), lookup_transfers (fetch by 128-bit id), and query_transfers (filter by ledger, code, and user_data).
    Delivered over the binary TCP wire protocol via the official clients - no REST endpoints, no OpenAPI.
  properties:
  - url: https://docs.tigerbeetle.com/reference/transfer/
    type: Documentation
  - url: https://docs.tigerbeetle.com/reference/requests/create_transfers/
    type: APIReference
  - url: https://docs.tigerbeetle.com/reference/requests/lookup_transfers/
    type: APIReference
  - url: https://docs.tigerbeetle.com/reference/requests/query_transfers/
    type: APIReference
- aid: tigerbeetle:tigerbeetle-account-balances-api
  name: TigerBeetle Account Balances API
  tags:
  - Balances
  - History
  - Ledger
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.tigerbeetle.com/reference/account-balance/
  description: The get_account_balances operation returns the historical balances of an account over time (for accounts created
    with the history flag), each a point-in-time AccountBalance record of pending and posted debits and credits. A binary
    wire-protocol operation invoked through the official client libraries, not an HTTP endpoint.
  properties:
  - url: https://docs.tigerbeetle.com/reference/account-balance/
    type: Documentation
  - url: https://docs.tigerbeetle.com/reference/requests/get_account_balances/
    type: APIReference
- aid: tigerbeetle:tigerbeetle-account-filter-queries-api
  name: TigerBeetle Account Filter Queries API
  tags:
  - Query
  - Filters
  - Transfers
  tags_raw:
  - Queries
  - Filters
  - Transfers
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.tigerbeetle.com/reference/account-filter/
  description: Query surface for retrieving the transfers and balances tied to a single account. The get_account_transfers
    operation takes an AccountFilter (account_id, timestamp range, limit, direction, and flags) to page through an account's
    transfers, and the same filter drives get_account_balances. QueryFilter powers the broader query_accounts / query_transfers
    searches. Binary wire-protocol operations via the official clients - no REST, no OpenAPI.
  properties:
  - url: https://docs.tigerbeetle.com/reference/account-filter/
    type: Documentation
  - url: https://docs.tigerbeetle.com/reference/query-filter/
    type: Documentation
  - url: https://docs.tigerbeetle.com/reference/requests/get_account_transfers/
    type: APIReference
common:
- type: DomainSecurity
  url: security/tigerbeetle-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/tigerbeetle
- type: LinkedIn
  url: https://www.linkedin.com/company/tigerbeetle
- type: Website
  url: https://tigerbeetle.com/
- type: Documentation
  url: https://docs.tigerbeetle.com/
- type: Plans
  url: plans/tigerbeetle-plans-pricing.yml
- type: FinOps
  url: finops/tigerbeetle-finops.yml
- url: https://tigerbeetle.com/blog/atom.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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