# Fragment

**Canonical:** https://apis.io/providers/fragment-dev/  
**Website:** https://fragment.dev  
**APIs profiled:** 6

Fragment is a ledger API for engineering teams. It provides a real-time, double-entry ledger to track money movement, model balances, and reconcile against external systems (banks, processors, PSPs). The product is GraphQL-first - developers define a Schema (chart of accounts and entry types), create Ledgers, post immutable Ledger Entries composed of balanced debit/credit lines, and read balances and lines back through a single GraphQL endpoint. Every write mutation is idempotent.

## Kin Score — 30.3 / 100 (thin)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 30.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 38.9 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 52.6 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 39.5 |
| Access Clarity | 39.5 |

Regulatory layer — **Payments**: 9.4 (matched via tags).

## Agent readiness — 18.4 (agent-aware)

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

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (6)

- **Fragment Ledger GraphQL API** — Single GraphQL endpoint for defining a ledger Schema, creating Ledgers, posting balanced double-entry Ledger Entries, and reading balances and lines. All write mutations are ide...
- **Fragment Schema API** — Define and version the ledger Schema - the chart of accounts, account types (asset, liability, income, expense), currency modes, and the ledger entry types your product posts. S...
- **Fragment Ledgers API** — Create and query Ledgers from a stored Schema. A Ledger is an isolated database for tracking money for a use case, tenant, or environment, created with createLedger and read wit...
- **Fragment Ledger Entries API** — Post immutable, balanced double-entry Ledger Entries made of debit and credit lines against accounts. Uses addLedgerEntry with an idempotency key (ik), reverseLedgerEntry to cor...
- **Fragment Balances API** — Read real-time balances and the underlying lines. Query overall ledger balances (getLedgerBalances), per-account balances (getLedgerAccountBalances), and the debit/credit lines ...
- **Fragment Reconciliation API** — Match ledger activity against external money movement. reconcileTx reconciles a transaction idempotently by transaction ID, while syncCustomAccounts and syncCustomTxs ingest ext...

## Security (1)

- **Fragment Dev Domain Security** — TLSv1.3 · DNSSEC · DMARC

## Plans (1)

- **Fragment Dev Plans Pricing**

## Tags

Ledger, Double-Entry, Accounting, Fintech, Payments, Reconciliation, GraphQL, Balances

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