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9Squid is a system of record for deal-level on-chain state and a system of engagement for the syndication workflow. For everything else — loan servicing, fund administration, shadow accounting, treasury, CRM — 9Squid integrates rather than replaces. Off-chain activity is mirrored on-chain; on-chain activity is surfaced back into partner systems for reporting, accounting, and reconciliation.

Authentication

All server-to-server integrations use OAuth 2.0 client credentials. Additional security options:

Loan Servicing

Direct integrations with major credit union servicing platforms: For platforms not listed above, 9Squid supports standard loan tape formats via SFTP with field-level validation and auto-mapping.

Typical Data Flow


Fund Administration and Shadow Accounting


Treasury and Banking


CRM and Distribution

To connect your CRM, contact support@9squid.com.

Webhooks

Every webhook event is delivered with:
  • A signed payload (HMAC-SHA256 via X-9Squid-Signature)
  • A monotonically increasing event ID — use this to deduplicate at-least-once deliveries
  • At-least-once delivery semantics — your endpoint must be idempotent

Event Reference

See the Webhooks workflow for setup instructions and signature verification.

API Endpoints Reference

Originator Endpoints

Investor Endpoints

Service Provider Endpoints


Rate Limits

See Error Handling for how to handle 429 Too Many Requests responses.

Versioning and Change Management

  • All endpoints are versioned under /v1/
  • Breaking changes are introduced only in new major versions
  • Each new version runs parallel with the prior version for at least 180 days
  • Non-breaking changes are announced in advance via the Changelog
For integration design discussions, contact developers@9squid.com.

AI Agents (MCP)

The 9squid Platform exposes a Model Context Protocol (MCP) server that lets AI agents like Claude interact directly with the platform through structured tool calls — loan uploads, pool analysis, deal browsing, portfolio queries, and more. See the MCP Integration guide for setup and usage.

Sandbox

A full sandbox environment is available with:
  • Deterministic test data
  • Simulated remittances
  • Mock investor wallets
Request sandbox access at developers@9squid.com.

CLI

For scripting and CI use cases, the 9squid CLI wraps the same Originator and Investor endpoints — loan tapes, selection criteria, pools, deals, subscriptions, webhooks, and alerts — with table/JSON output and stable exit codes.