# Unified.to MCP Server (slim)

> Unified.to MCP Server is a hosted Streamable HTTP server from Unified API Inc. that turns one end-customer connection to a business app into MCP tools, on top of the vendor's unified API for CRM, HR, accounting and other categories.

- Full: https://www.anchorterminal.com/tools/unified-to-mcp.md (~9,350 tokens) · this version ~2,030 tokens · JSON https://www.anchorterminal.com/tools/unified-to-mcp.json · canonical https://www.anchorterminal.com/tools/unified-to-mcp
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-10

**C · 61.9/100 · rank #455 of 950 · #5 in Agent tool access · not agent-ready · confidence medium**


Assessment: Every previewed tool carries a typed input schema and read-only, destructive and idempotent annotations, and the list can be narrowed by permission or tool name. The default credential is a workspace API key that reaches every connection, and the SSE transport was removed on 23 September 2026 in the changelog entry that announced it.

## Facts

- Kind: MCP server · vendor: Unified API Inc. · category: Agent tool access · legal entity: Unified API Inc. · provenance 71/100
- Endpoint: `https://mcp-api.unified.to/mcp` (Streamable HTTP)
- Auth: OAuth or key · pricing: Paid · x402: no · licence: Proprietary service under Unified.to's Terms of Service. The linked repository is sample client code
- Probe metrics: not measured yet (probes haven't run)
- Endpoints: `https://mcp-api.unified.to/mcp` (US), `https://mcp-api-eu.unified.to/mcp` (EU) and `https://api-au.unified.to/mcp` (AU). Streamable HTTP only. Regions do not resolve across one another
- Modes: Connection mode lists one end-customer connection's tools. Core mode, with a workspace API key and no connection, lists 21 management tools for connections, webhooks, integrations, issues, API-call logs, environments and docs search
- Credentials: Workspace API key in the `Authorization` header or `x-api-key`, a connection-scoped signed token in `?token=` (`user` mode), or an `ema_` access token from an RFC 7523 `jwt-bearer` exchange, enabled per workspace on request
- Tool filters: `permissions` (for example `crm_contact_read`), `tools` (ids or wildcards such as `list_*`), `defer_tools`, `aliases`, `hide_sensitive` and `include_external_tools`, all as URL parameters
- Tool shape: Names follow `list_`, `get_`, `create_`, `update_` and `remove_` plus category and object, such as `list_crm_contacts`. List tools take `fields`, `limit`, `offset`, `updated_gte`, `sort`, `order` and `query` where the integration supports them
- Annotations: In the HubSpot preview all 78 tools set `readOnlyHint`, `destructiveHint`, `idempotentHint` and `openWorldHint`. Create, update and remove tools are all marked destructive
- Catalogue: 94,258 tools on 8 October 2026, 17,189 of them unified, per the MCP changelog. The pricing page counts 1,236 integrations and 33 unified APIs. All vendor figures
- Rate limits: Per workspace, per minute. Test 500, Grow 5,000, Pro 7,500, Scale 10,000. The connected app's own limits apply first. Unified does not queue or retry synchronous calls
- Free use: A tester account with 2,500 free API requests, per the pricing page description, and a 30-day free trial on Grow and Pro. Whether a card is needed is not stated
- Logs: API call logs kept 30 days on Test, 60 on Grow and Pro and 365 on Scale, per the privacy policy. Pro and Scale can stream logs to Datadog. Core mode tools `list_unified_apicalls` and `get_unified_apicall` read them
- Data handling: The privacy policy says end-customer data is processed in transit and not stored or cached, and that no models are trained on any data. Credentials and configuration are stored in the workspace's region
- Hosting: Separate US, EU and AU regions. The sub-processor list of 2 October 2025 names AWS, Render, MongoDB, Redis and ClickHouse in all three, and Datadog, PostHog, Stripe and Customer.io in the US
- Certifications: SOC 2 Type II, with GDPR, CCPA, HIPAA and PIPEDA compliance stated on the security page. A BAA is on the Scale plan. Reports are requested through a trust centre we did not read
- Other interfaces: The unified REST API with an OpenAPI 3.0 file, SDKs for TypeScript, Python, PHP, Java, Go, C# and Ruby (all dated 21 September 2026 on the docs), a CLI and more than 100 agent skill files
- Prices: Grow plan $750 per month (plan); Pro plan $1500 per month (plan); Scale plan $3000 per month (plan); Overage, Grow $1 per 1,000 requests; Overage, Pro $0.75 per 1,000 requests; Overage, Scale $0.50 per 1,000 requests

- Scores: Reliability 73, Performance pending, Schema & documentation 81, Agent ergonomics 71, Security & auth 50, Payments & pricing 30, Task success pending, Maintenance & community 84, Transparency & trust 66 · negative events -3 · total over the 7 assessed categories
- Why: Reliability, Read with the hosted lines. · Schema & documentation, One credential-free `tools/list` preview for HubSpot returned 78 tools, each with a JSON Schema input and 66 with an output schema. · Agent ergonomics, One HubSpot connection lists 78 tools, about 133 KB of definitions without output schemas and 343 KB with them, which scores 5. Eight back f… · Security & auth, The default credential is a workspace API key that the docs say reaches all connections and the whole account. · Payments & pricing, No x402, MPP or L402 (0). · Maintenance & community, MCP changelog entry on 8 October 2026 (30). · Transparency & trust, The editorial half.
- Sources: 33, open questions: 11, both in the full twin
- Capabilities: automation.apps, automation.auth, automation.actions, agent.tools, automation.webhooks
- JSON: https://www.anchorterminal.com/api/v1/tools/unified-to-mcp.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/unified-to-mcp.svg` or a link to https://www.anchorterminal.com/tools/unified-to-mcp from a page on unified.to or one of its subdomains, or the README of github.com/unified-to/unified-mcp-typescript, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Use the host for the workspace's region. US is `mcp-api.unified.to`, EU is `mcp-api-eu.unified.to` and AU is `api-au.unified.to`. A credential on another region's host resolves to not found
2. Send the key as `Authorization: Bearer <key>` and put `connection=<id>` in the URL. Without `connection` the server lists workspace management tools, not the customer's data tools
3. Pass `tools` or `permissions` in the URL before listing. An unfiltered connection can list dozens of tools with large output schemas
4. Expect HTTP 429 on tool calls since 23 September 2026. Unified does not queue or retry, so back off and retry yourself
5. Page with `limit` (100 at most on most endpoints) and `offset`, and stop when a page returns fewer records than `limit`

## Connect

```bash
claude mcp add --transport http unified-core https://mcp-api.unified.to/mcp \
    --header "Authorization: Bearer $UNIFIED_API_KEY"
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/unified-to-mcp

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Composio (API + MCP) | BB | 75.1 | automation.apps, automation.auth, automation.actions, agent.tools, automation.webhooks | https://www.anchorterminal.com/tools/composio-rube.min.md |
| Smithery | D | 50.7 | automation.apps, automation.auth, automation.actions, agent.tools, automation.webhooks | https://www.anchorterminal.com/tools/smithery.min.md |
| Merge Agent Handler | B | 69.5 | automation.apps, automation.auth, automation.actions, agent.tools | https://www.anchorterminal.com/tools/merge-agent-handler.min.md |
| StackOne | B | 69.1 | automation.apps, automation.auth, automation.actions, agent.tools | https://www.anchorterminal.com/tools/stackone.min.md |
| One | B | 66.6 | automation.apps, automation.auth, automation.actions, agent.tools | https://www.anchorterminal.com/tools/one.min.md |


## Panel reviews (0, desk reviews from public material, no calls made)