Changelog

Additive changes (new fields, endpoints, event types) ship continuously and are listed here. Breaking changes get a new dated FC-Version with a migration window. Current version: 2026-07-01.

2026-07-24

• MCP server (beta) — /api/mcp exposes data and AI products as Model Context Protocol tools with secret-key authorization.
• Published llms.txt and openapi.json for AI-tool discovery.

2026-07-18

• GraphQL read gateway (beta) — POST /v1/graphql over items, accounts, and transactions.
• Nine idiomatic REST SDKs released: Python, Go, Rust, Java, Swift, Kotlin, Dart, PHP, .NET.

2026-07-10

• AI products GA — all nine endpoints out of beta. Standalone payload mode added to categorize, subscriptions, and fraud-risk.
• Every AI response now reports engine (rules | ai | ai+rules) and model.
• New webhook: usage.limit_approaching at 80% of a monthly quota.

2026-07-01

• API version 2026-07-01 — the current contract; responses carry it in the FC-Version header.
• /transactions/sync cursor pagination GA: added / modified / removed with durable cursors.
• Webhook deliveries signed with FC-Signature v1 and retried on the 1m / 5m / 30m / 2h schedule.
• Rate-limit headers (X-RateLimit-*) added to every /v1 response.

2026-06-20

• Link update mode — re-authenticate an existing item via update_item_id; your stored access token keeps working (exchanging the public_token again rotates it, flagged by rotated). See Link.
• Sandbox MFA test user (user_mfa, code 1234) and /v1/sandbox/item/reset_login.
• Institution network expanded to 76 sandbox institutions across banks, payment apps, investments, crypto, and business.

2026-06-05

• Initial public release: Link, institutions, items, accounts, transactions, identity, income, assets, investments, liabilities, recurring, categories.
• @feelconnect/node and @feelconnect/link published.