# Fragment

**Canonical:** https://apis.io/providers/fragment/  
**Website:** https://fragment.dev/docs  
**APIs profiled:** 1

Fragment is the ledger API for engineers who move money. It provides a double-entry accounting engine — "the database for money" — that lets developers model any funds flow as declarative, typed schemas and post balanced, immutable ledger entries through a GraphQL API. Fragment generates a typesafe SDK from your chart-of-accounts schema, tracks real-time, historical, period, and strongly-consistent balances across multi-currency and custom-currency accounts, and reconciles internal ledgers against external systems (Stripe, Increase, Unit, banks) via linked and external accounts. Every write mutation is idempotent (per-Ledger idempotency keys), responses are GraphQL union types with typed errors, list queries are cursor-paginated, and the API is deployed across AWS regions. Fragment is used by companies including Bill, Ramp, Pleo, AtoB, Basic Capital, and Nala, and is backed by General Catalyst.

## Kin Score — 50.9 / 100 (developing)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 50.9).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 48.1 |
| Governance | 3.1 |
| Operational Transparency | 47.4 |
| Developer Ergonomics | 69.0 |
| Commercial Clarity | 50.0 |

Regulatory layer — **Payments**: 56.3 (matched via tags).

## Agent readiness — 36.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| MCP Server | derived |
| Auth Clarity | yes |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **Fragment Ledger API** — Fragment's GraphQL Ledger API. Store a double-entry chart-of-accounts schema, create ledgers, post idempotent ledger entries and lines, read aggregated / historical / period / s...

## MCP servers (1)

- **fragment-mcp.yml**

## Security (4)

- **Fragment Authentication** — oauth2 · 1 scheme
- **Fragment Domain Security** — TLSv1.3 · DNSSEC · DMARC
- **Fragment Vulnerability Disclosure** — Hackerone · contact published
- **Fragment Trust Center** — SOC 2 Type II

## Tags

Company, Ledger, Accounting, Payments, Fintech, Double-Entry, Money Movement, GraphQL, Financial Infrastructure, Reconciliation

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/fragment/). Scores are computed from the provider's own public artifacts under a published rubric.