Knit vs Unified.to: Which Unified API Is Right for Your Product in 2026?

May 13, 2026

Knit is a unified API for 13 categories, with most of its integrations in HR, payroll and recruiting: it reads the source system on request and pushes changed records to your webhook from scheduled syncs, every 24 hours on its entry plan (as of 8 October 2026). Unified.to is a unified API across 36 categories that reads the source system on every call, stores no customer records and delivers change events on supported integrations as often as every minute on every paid plan. Choose Knit for ISO 27001, saved per-customer field mapping or Workday employee updates and terminations; choose Unified.to for categories Knit doesn't cover, change events within a minute, enterprise controls without a quote or a hosted MCP server across every category.

How do Knit and Unified.to compare at a glance?

Knit and Unified.to both read the source system at request time; they differ most on scope, how often changes arrive, what the vendor keeps and which features need a quote. Knit figures come from Knit's own site and docs, including its pricing page and supported apps list; Unified.to figures from unified.to and its docs.

Knit and Unified.to at a glance (checked 8 October 2026)

What does Knit do well?

Knit publishes which apps each endpoint supports, builds connectors on request and gives you detailed control of its syncs. As of 8 October 2026:

• Per-endpoint support tables: each endpoint page in Knit's API reference lists the apps that support it, often with per-app field rules, so you can check coverage before you build (supported apps).
• Connector builds on request: Knit's FAQ says "If an API is public, Knit can build and deploy a new connector for you in 2 to 7 business days at no extra cost." New-integration requests are prioritized on Scale Up and carry a promised SLA on Enterprise.
• Sync controls and reconciliation: watch fields limit events to the fields you care about, each sync run reports processed, emitted and consumed counts, and a heartbeat event fires every 90 seconds during long syncs (Syncs).
• Its own OAuth apps: on some integrations, such as Attio, Knit's docs say its own OAuth app is used by default, so you can go live before registering an app with that vendor.
• End-user field controls: from Scale Up, Knit lets your users "turn access to sensitive fields on and off from the Auth component" (pricing).
• A published uptime SLA: Knit lists 99.9% and 99.99% uptime SLAs, though its pricing, plan-comparison and Unified API pages disagree on which plan gets which.

How do Knit and Unified.to handle customer data?

Knit and Unified.to both read the source system at request time; they differ on what else they keep. Knit keeps hashes and record IDs of synced records to detect changes and, per its FAQ, logs raw request and response JSON; Unified.to keeps operational metadata only.

Knit (as of 8 October 2026)

• Two read paths. Knit's docs say "Use Knit's GET APIs when you need data immediately."; Syncs poll the source on a schedule and push records to your webhook instead (concepts).
• Storage statement. Knit's security page says "we don't store your user data. It's processed on our application server and sent directly to your webhooks."
• What it keeps. To detect changes, Knit "compares hashes of previously seen data" (Syncs) and flags records missing from a later sync, which needs their IDs. Its FAQ says the dashboard shows "raw JSON requests and responses from the source API". Knit doesn't publish how long it keeps the hashes.

Unified.to. Unified.to routes each request to the source system in all 36 categories and doesn't store the response. It stores connection credentials, encrypted at rest, and logs that record endpoint, timing, status and workspace, never payloads. For a deeper breakdown, see Pass-Through vs. Sync-Based Unified APIs.

How do change events reach you from Knit and Unified.to?

Knit and Unified.to both deliver the changed record in the event: Knit from scheduled syncs, every 24 hours on Start Up and configurable on its quote-only plans, and Unified.to from native webhooks or from virtual webhooks at a 1-minute minimum on every paid plan.

Knit (as of 8 October 2026)

• Interval. Knit's sync-frequency API offers presets of 24, 12 and 6 hours and says "The minimum allowed polling interval is 5 minutes." (update sync frequency); its pricing page fixes the interval on Start Up and lists it as configurable on Scale Up and Enterprise.
• Delivery. "The webhook will always receive one record data in one request call." Knit retries failed deliveries every 30 minutes for up to 4 days by its docs (its FAQ says 72 hours) and asks you to "Make sure your endpoint is idempotent to handle potential duplicate deliveries." It publishes no ordering guarantee (webhooks).
• Scope. Syncs cover HR, ATS, CRM, accounting and expense data; ticketing, calendar, e-signature and Knit's other categories are read on request only (sync data types).
• Deletions. A record missing from a later sync triggers a record.deleted event with isRecordMissing set to true; "Virtual deleted data" is on every plan and native deleted data from Scale Up.
• Native events. Knit supports real-time events on 18 CRM, ATS, calendar and email apps, and says they "are best thought of as complementary to Syncs rather than a replacement for them."

Unified.to. Native webhooks deliver changes where the source sends them, and virtual webhooks detect changes and deliver the changed records as events where it sends none (1-minute minimum on paid plans, 60 minutes on the free trial). Events cover supported integrations and objects, such as employees, time off, payslips, candidates, interviews and scorecards. Deletion detection by polling covers ten integrations, with native delete events where the source sends them. Database Sync writes records into your own MongoDB, MySQL, Postgres, MSSQL, MariaDB, Supabase or Snowflake database instead of a webhook endpoint.

Which integrations do Knit and Unified.to each cover?

Knit lists 198 integrations on its site (175 in its docs) across 13 categories, most of them HR, directory, payroll and ATS apps (as of 8 October 2026); Unified.to covers 1484 integrations across 36 categories, including Knit's largest ones and verification, and reads pay runs on eight payroll systems to Knit's one.

Coverage by category: Knit (its docs and site, 8 October 2026) and Unified.to

In HR and ATS, the two data models are comparable in size and differ in shape (Knit's API reference, 8 October 2026; Unified.to's docs). Knit models W-4 and India KYC data, positions, leave balances, termination and rejection reasons, and structured job requirements (skills, certifications, education, languages). Unified.to models benefit plans, devices, scheduled shifts, skills taxonomies, pay codes, earnings, interview scorecards and ATS companies, with raw source data on every object. Write support varies by integration on both: Knit lists deduction writes on ADP and Paychex, which Unified.to doesn't write; Unified.to creates and updates employees on Ceridian Dayforce and Personio, and Knit lists no HRIS writes on Dayforce.

How do Knit's MCP servers compare with Unified MCP?

Knit's MCP servers and Unified MCP are both hosted: Knit runs 106 pre-built per-app MCP servers, each at its own URL with a server token, while Unified MCP serves 22,566 tools across every Unified.to category from one host per region, with a signed URL scoped to one connection.

Knit (as of 8 October 2026)

• Servers. Knit's MCP Servers catalogue lists 106 servers across HR, ATS, CRM, accounting and other categories. You choose the tools each server carries and receive "a server URL and an MCP server token" (getting started). Tools are named like get_employee and list_open_positions.
• Tool count. Knit claims "8000+ LLM Ready tools" in its FAQ and "10,000+ tools" elsewhere; its per-app pages list about 2,000 actions.
• Transport. The only transport Knit names is HTTP+SSE, in a blog post; it publishes no MCP spec revision and no regional MCP host.
• Enterprise and building. Knit's MCP Enterprise plan adds managed auth, role-based access control and a dynamic tool packaging API. A separate Knit MCP server helps developers build integrations in IDEs and CLIs (IDE and CLI server).

Unified MCP

• Transport. Unified MCP is Streamable HTTP only, with one host per region (US https://mcp-api.unified.to/mcp, EU https://mcp-api-eu.unified.to/mcp, AU https://api-au.unified.to/mcp), and supports the stateless core of the 2026-07-28 MCP revision in production; a credential works only on its own region's host.
• Tools. Unified MCP's tool count includes normalized tools and each vendor's own endpoints (include_external_tools). A connection's tool list depends on the integration's feature support and the permissions you grant: as of 8 October 2026, 30 CRM tools for HubSpot and 12 Ticketing tools for Zendesk. Many models handle only a limited number of tools (Groq 10, most OpenAI models 20, Cohere about 50), so permissions and tools narrow the list and defer_tools marks tools for deferred loading.
• Connection-scoped URLs. Unified MCP generates a URL with a signed token good for one connection and nothing else, so the workspace API key stays on your side. hide_sensitive strips names, emails and phone numbers from results before they reach the model.
• Enterprise-managed authentication. Enabled per workspace on request: your identity provider issues an ID-JAG for the end user, exchanged at POST /oauth/token for an ema_ bearer token whose scopes, such as crm.read, filter the tools offered.
• Writes. Agents write in the normalized model, so one create call adds a record in whichever system the connection uses.

Building the integration with coding agents. Unified.to publishes Agent Skills: SKILL.md packages for each How-To use case, including HRIS and ATS, and OAuth app-registration skills that walk an agent through vendor developer portals. A Claude Code plugin installs every skill with the Core MCP server, which manages your workspace and doesn't read or write end-customer data; Codex, Cursor, GitHub Copilot and Windsurf add the skills with npx skills add https://docs.unified.to.

How do Knit and Unified.to compare on security and compliance?

Knit and Unified.to both have SOC 2 Type II reports; Knit also claims ISO 27001 certification, while Unified.to states HIPAA with a BAA on Scale, CCPA/CPRA and PIPEDA, which Knit covers only as "HIPAA-readiness" and through its DPA.

Security and compliance (checked 8 October 2026)

On Pro and Scale, connection credentials can live in your own secrets manager (11 supported, including AWS Secrets Manager, Azure Key Vault, Google Cloud Secret Manager and HashiCorp Vault) instead of Unified.to's database. Knit doesn't say which secrets managers its Enterprise option supports or what it stores there.

How much do Knit and Unified.to cost?

Knit bills its Unified API per connected account, priced by contract on every plan, on top of a published platform fee on its entry plan; Unified.to bills by API call from $750 a month, with unlimited connections on every plan.

Knit Unified API (as of 8 October 2026, pricing)

• Start Up: $499 a month; all whitelisted connectors, but Knit says the plan is not for "enterprise apps like Salesforce, Workday, etc."; Knit-branded Auth component; 100,000 API calls a month under fair use; 3-day logs; 3 test accounts.
• Scale Up: by quote; configurable sync frequency, white-labelled Auth component, custom field mappings, 1,000,000 API calls a month under fair use, 30-day logs.
• Enterprise: by quote; custom Magic Link domain, your own secrets store, multiple data centre locations, single tenant, static IPs, 90-day logs, a dedicated account manager.
• Billing: connected accounts are priced by contract on every plan, and "Knit also offers API call-based pricing" on request; billing starts after a 30-day build period. Knit publishes no per-account price.

Knit MCP Servers (separate product)

• Launchpad: free, up to 5 servers and 100 API calls a month. Individual: $29 a month, 5,000 API calls and unlimited servers. Enterprise: by quote. These plans don't include Knit's Unified API.

Unified.to (as of 8 October 2026, pricing)

• Grow: from $750 a month for 750,000 API calls; overage $1.00 per 1,000.
• Pro: $1,500 a month for 2,000,000 API calls; overage $0.75 per 1,000. Adds EU and AU workspaces, SAML SSO, your own secrets manager, IP restriction, an authorization CNAME (US and EU regions), and log shipping to Datadog, Grafana and ClickHouse.
• Scale: $3,000 a month for 6,000,000 API calls; overage $0.50 per 1,000. Adds a HIPAA BAA, 365-day logs and Multi-Region Sync.
• Grow, Pro and Scale include all 36 categories; Grow and Pro start with a 30-day free trial; Enterprise is custom, with on-prem, private cloud, dedicated cloud or single-tenant hosting and prioritized 24/7 support.

Is Knit cheaper than Unified.to? (our calculation) At list price, Knit's entry plan is cheaper: from published prices as of 8 October 2026, Knit Start Up lists at $499 a month, $251 less than Unified.to Grow at $750, before Knit's connected-account fees. A full break-even isn't computable, because Knit prices connected accounts by contract on every plan and publishes no per-account price. Per included call, Start Up works out to $4.99 per 1,000 (100,000 calls under fair use) and Grow to $1.00 per 1,000 (750,000 calls), assuming each allowance is fully used. Caveats: Knit's allowance counts calls "made by you to Knit, or by Knit to the source app on your behalf", so its own polling may count; Start Up excludes enterprise apps and fixes the sync interval; above Start Up, Knit is quote-only. What the difference buys on Unified.to: change events down to a 1-minute interval on every paid plan, where Start Up syncs every 24 hours; every integration on Grow, including Workday (Legacy), which Start Up excludes as an enterprise app; and Database Sync into your own database, where Knit delivers to webhooks only. For how the two pricing models behave as you grow, see usage-based vs. per-connection pricing.

How did Sync2Hire ship ATS integrations with Unified.to?

Sync2Hire, which works on the post-application communication gap in hiring, shipped 19 ATS integrations in about two weeks with two engineers, according to the case study. Sync2Hire mapped Unified.to's ATS data model once instead of each vendor's API, and uses virtual webhooks for ATS platforms without native ones. For more ATS options, see Best Unified API for ATS Integrations in 2026.

Which should you choose?

Knit wins on certification, saved field mapping, deletion events, Workday employee updates, deduction writes on ADP and Paychex, and entry price; Unified.to wins on category coverage, change-event speed, enterprise controls without a quote and MCP across every category.

Frequently asked questions

What happens to my customers' connections if I leave Knit? Plan to have customers re-authorize: as of 8 October 2026, Knit publishes no token or credential export, and on some integrations Knit's own OAuth app holds the connection. Knit's refund policy says "Once signed, you cannot cancel the subscription before the initially agreed upon subscription term ends", and its Terms commit it to delete or return End Customer Data on a written request made within 30 days of termination. Unified.to has no Knit-specific guide; its migration guides for other unified APIs map authorization, API calls, pagination, webhooks and passthrough, and cover re-authorizing customers or importing credentials from your own OAuth apps. Only tokens issued to an OAuth app you own keep refreshing after you switch, and on Unified.to the API returns each connection's tokens if you leave.

Start your 30-day free trial of Unified.to or talk to our team to see how the coverage and architecture fit your product.

Written by Mallory Greene.

About the author: Mallory Greene is Head of Marketing at Unified.to. She writes about integration infrastructure, unified APIs, and MCP for technical teams. Based in Toronto.