{
  "data": {
    "a": {
      "slug": "stackone",
      "name": "StackOne",
      "vendor": "StackOne Technologies Limited",
      "vendorUrl": "https://www.stackone.com",
      "kind": "mcp",
      "category": "aggregator",
      "summary": "StackOne is a hosted gateway from StackOne Technologies Limited that gives AI agents actions across more than 540 business apps over MCP, SDKs, A2A or HTTP, with managed authentication, per-user grants, policies and logs.",
      "url": "https://www.anchorterminal.com/tools/stackone",
      "markdownUrl": "https://www.anchorterminal.com/tools/stackone.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/stackone.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/stackone.json",
      "repo": "https://github.com/StackOneHQ/stackone-ai-node",
      "license": "Proprietary service under StackOne's SaaS Terms and Conditions. The Agent SDKs (`@stackone/ai`, `stackone-ai`) and the Defender package (`@stackone/defender`) are Apache-2.0",
      "transports": [
        "streamable-http",
        "http"
      ],
      "remoteUrl": "https://mcp.stackone.com/mcp",
      "packages": [
        {
          "registry": "npm",
          "name": "@stackone/ai"
        },
        {
          "registry": "pypi",
          "name": "stackone-ai"
        },
        {
          "registry": "npm",
          "name": "@stackone/defender"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve. A person signs up in the dashboard, creates a project and a connector profile, and links an account. MCP clients connect to `https://mcp.stackone.com/mcp` with OAuth (scopes `mcp offline_access`, one-hour access tokens, a 90-day grant) and the user picks the linked accounts and actions at consent. Most clients register themselves, and a few need a client ID and secret created in the dashboard. Backend calls go to `https://api.stackone.com/mcp` or `POST /actions/rpc` with a project API key as the Basic auth username and the linked account in `x-account-id`. Keys take scopes (Platform API, Actions, Connectors, Credentials, Unified API) and can be disabled or deleted. Session token URLs (`https://api.stackone.com/mcp?token=...`) cover one linked account, carry the access in the URL and expire after one year by default.",
      "pricing": "freemium",
      "pricingNotes": "Free to start with no card, per the pricing page. Gateway Starter is free with 1,000 credits a seat a month, one credit per tool call or API call, and extra credits at $60 per 20,000. Gateway Team is $600 a month ($6,000 a year) with 5,000 credits a seat a month and extra credits at $20 per 20,000. The pricing calculator's markup gives 10 seats included on Team and $15 a further seat, which the page text doesn't state. OEM Core is free with a monthly credit allowance and volume prices on request. Enterprise plans are priced on contract. Browser use, premium defence and data sync cost more than one credit, at rates not published. The Service Consumption Schedule of 30 March 2026 gives $0.003 per Action Call as overage and counts unsuccessful requests, while the pricing page says background and failed calls aren't billed (https://www.stackone.com/pricing/, checked 2026-10-09).",
      "priceSummary": "$600 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs index, the pricing page, the SaaS terms or the Service Consumption Schedule (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 30,
        "npmWeekly": 277,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://docs.stackone.com/introduction",
      "llmsTxt": "https://docs.stackone.com/llms.txt",
      "openapi": "https://api.eu1.stackone.com/v2/oas/stackone.json",
      "registryName": "com.stackone/mcp",
      "capabilities": [
        "automation.apps",
        "automation.auth",
        "automation.actions",
        "agent.tools",
        "auth.audit"
      ],
      "tags": [
        "hosted",
        "mcp",
        "a2a",
        "freemium",
        "free-tier",
        "no-card",
        "oauth",
        "api-key",
        "openapi",
        "llms-txt",
        "typescript",
        "python",
        "enterprise",
        "status-page",
        "soc2",
        "mcp-registry",
        "closed-source"
      ],
      "lastRelease": "2026-09-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 69.1,
        "grade": "B",
        "agentReady": false,
        "rank": 198,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 75,
          "maintenance": 84,
          "payments": 38,
          "reliability": 80,
          "schema": 78,
          "security": 69,
          "transparency": 69
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": -2,
        "negativeNotes": [
          "27 April 2026. `@stackone/ai` v2.8.1 fixed a flaw in which tools fetched concurrently for several accounts were stamped with the wrong `x-account-id`, so a call could run against another linked account. It is recorded as a bug fix in the changelog, with no advisory found. Fixed and documented, so 2 points (https://github.com/StackOneHQ/stackone-ai-node/blob/main/CHANGELOG.md)."
        ],
        "verdict": "StackOne's MCP server signs each person in with OAuth, lets them grant individual accounts and actions, and by default exposes two search and execute tools in place of the full catalogue. Session token URLs carry the credential in the query string for a year by default, and the Consumption Schedule and pricing page disagree on whether failed calls are billed.",
        "bestFor": "A company that wants one governed MCP endpoint for staff agents across business systems, and product teams embedding per-customer connections with HR, recruiting and CRM coverage.",
        "strengths": [
          "The MCP server at `https://mcp.stackone.com/mcp` uses OAuth per person. Access tokens last one hour, a grant lasts 90 days, and each user can revoke it under Connected Apps",
          "Advanced Tool Search replaces the tool list with two tools, search and execute, and is on by default at the OAuth consent screen",
          "Since 24 July 2026 every tool carries `readOnlyHint`, `destructiveHint` and `openWorldHint`, derived from an effects value on each action",
          "API keys are limited to one project and take scopes for the Platform API, Actions, Connectors, Credentials and the Unified API. Credentials access is off by default",
          "Rate limit published at 1,000 requests a minute per API key, with `Retry-After` in seconds on 429 and 408 responses",
          "Defender scans tool results for prompt injection and is on for new projects. Its Light Scan engine is open source under Apache-2.0"
        ],
        "weaknesses": [
          "Session token URLs (`https://api.stackone.com/mcp?token=...`) put the credential in the query string, cover one linked account and expire after one year by default",
          "The Service Consumption Schedule counts every request, successful or not, as an Action Call. The pricing page says failed calls aren't billed",
          "Defender's default mode is Monitor, which records a verdict and passes the tool result to the agent unchanged",
          "Policies apply only to signed-in members. A call made with a project API key is memberless and is governed by connector profile scoping alone",
          "The Logs API, audit logs, SIEM export and an uptime SLA are Enterprise only on Gateway plans, and Starter keeps action logs for one day",
          "The Acceptable Use Policy bars competitive analysis or benchmarking other than for internal comparison, and probing or testing the Service's vulnerability without authorisation. This matters before any probe is run",
          "`@stackone/ai` stamped tools with the wrong `x-account-id` when accounts were fetched concurrently, until v2.8.1 on 27 April 2026. No advisory was found"
        ],
        "agentNotes": [
          "Send `Accept: application/json,text/event-stream` on every MCP request to `https://api.stackone.com/mcp`, by POST only. Without it the server answers 406",
          "In `search_execute` mode call `{provider}_search_actions` first and pass the returned `action_id` to `{provider}_execute_action`. Never hardcode action ids",
          "Pass the API key as the Basic auth username with an empty password, and name the linked account in `x-account-id`",
          "On 429 or 408 wait the seconds given in `Retry-After`. StackOne has already retried a provider's 429 up to five times within a 60-second request lifetime",
          "On 412 read `errorCode` and `details.statusReasons`. `AccountErrorStatus` needs a person to re-authenticate the linked account"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 69.1
          }
        ],
        "editorialScores": {
          "ergonomics": 75,
          "maintenance": 84,
          "payments": 38,
          "reliability": 80,
          "schema": 78,
          "security": 69,
          "transparency": 50
        },
        "provenanceScore": 88
      },
      "connect": {
        "install": "npm install @stackone/ai",
        "http": "curl -X POST \"https://api.stackone.com/actions/rpc\" \\\n  -u \"$STACKONE_API_KEY:\" \\\n  -H \"x-account-id: your-account-id\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"action\": \"bamboohr_list_employees\", \"query\": {\"page_size\": 25}}'",
        "claudeCode": "claude mcp add --transport http --scope user stackone https://mcp.stackone.com/mcp"
      },
      "letme": {
        "capability": "https://letme.dev/automation.apps",
        "tool": "https://letme.dev/stackone"
      },
      "area": "business",
      "unitPrices": [
        {
          "item": "Gateway Team plan",
          "unit": "month",
          "usd": 600,
          "note": "5,000 credits a seat a month, one credit per tool call or API call. $6,000 billed yearly"
        },
        {
          "item": "Extra credits, Gateway Starter",
          "unit": "1k-calls",
          "usd": 3,
          "note": "$60 per 20,000 credits, valid 12 months. Advanced capabilities cost more than one credit a call"
        },
        {
          "item": "Extra credits, Gateway Team",
          "unit": "1k-calls",
          "usd": 1,
          "note": "$20 per 20,000 credits, valid 12 months"
        }
      ],
      "provenance": {
        "legalEntity": "StackOne Technologies Limited",
        "domain": "stackone.com",
        "domainRegistered": "2013-06-25",
        "endpointOnVendorDomain": true,
        "terms": "https://www.stackone.com/terms/saas-terms/",
        "privacy": "https://www.stackone.com/terms/privacy-policy/",
        "statusPage": "https://status.stackone.com",
        "changelog": "https://www.stackone.com/changelog/",
        "securityTxt": "none",
        "checked": "2026-10-09",
        "notes": [
          "The SaaS Terms and Conditions, effective 30 March 2026, name StackOne Technologies Limited, company number 14684360, registered at 2 Communications Road, Newbury, Berkshire, RG19 6AB, under the laws of England and Wales. They take effect when a customer first accesses the Service or signs an order.",
          "The contact page says StackOne operates in the United States as StackOne Technologies Inc., 2261 Market Street, San Francisco.",
          "The Platform Privacy Policy, last updated 1 December 2023, covers the web application and API and says it does not cover the website. A separate Privacy Notice covers the website.",
          "The MCP server answers at mcp.stackone.com, the API at api.stackone.com and A2A at a2a.stackone.com.",
          "www.stackone.com/.well-known/security.txt returned 404.",
          "RDAP for stackone.com gives a registration date of 2013-06-25. The company was incorporated later, per its company number.",
          "status.stackone.com runs on incident.io and lists the Web Dashboard, the API (US, EU and UK) and the Connectors Hub.",
          "trust.stackone.com, which the terms cite for the security policy and the sub-processor list, answered our reader with a bot check and was not read."
        ],
        "score": 88
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/stackone.json",
      "live": {
        "slug": "stackone",
        "probe": {
          "target": "https://mcp.stackone.com/mcp",
          "method": "mcp-initialize",
          "lastAt": "2026-10-10T02:55:11.652825976Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 100,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 112,
          "p95ms24h": 297,
          "samples24h": 115,
          "samples30d": 115,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 30,
              "ok": 30
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.stackone.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-10T02:50:47.919492814Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "StackOneHQ/stackone-ai-node",
            "version": "v2.10.0",
            "released": "2026-07-27",
            "seenAt": "2026-10-09T17:21:48.091098138Z"
          },
          {
            "registry": "npm",
            "name": "@stackone/ai",
            "version": "2.10.0",
            "seenAt": "2026-10-09T17:21:45.859326927Z"
          },
          {
            "registry": "npm",
            "name": "@stackone/defender",
            "version": "0.8.3",
            "seenAt": "2026-10-09T17:21:46.919917579Z"
          },
          {
            "registry": "pypi",
            "name": "stackone-ai",
            "version": "2.10.1",
            "released": "2026-07-28",
            "seenAt": "2026-10-09T17:21:46.731430671Z"
          }
        ],
        "githubStars": 30,
        "npmWeekly": 277,
        "pypiWeekly": 120,
        "pages": [
          {
            "url": "https://www.stackone.com/changelog/",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:54:33.415845489Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "a8dc254bb424"
          },
          {
            "url": "https://www.stackone.com/pricing/",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:54:35.567295878Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "98687cfb089f"
          },
          {
            "url": "https://www.stackone.com/terms/privacy-policy/",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-09T18:54:37.551620202Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "011ecd948b67"
          },
          {
            "url": "https://www.stackone.com/terms/saas-terms/",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:54:39.532884111Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "393a890498df"
          }
        ],
        "mcpTools": {
          "url": "https://mcp.stackone.com/mcp",
          "checkedAt": "2026-10-09T21:40:55.809059913Z",
          "status": "auth",
          "note": "asks for credentials before listing its tools",
          "changedAt": "2026-10-09T21:40:55.809059913Z"
        },
        "updatedAt": "2026-10-10T02:55:11.652825976Z"
      }
    },
    "answer": "StackOne scores 69.1 (B) on agent readiness against Unified.to MCP Server's 61.9 (C), and leads in 5 of 7 scored categories.",
    "b": {
      "slug": "unified-to-mcp",
      "name": "Unified.to MCP Server",
      "vendor": "Unified API Inc.",
      "vendorUrl": "https://unified.to",
      "kind": "mcp",
      "category": "aggregator",
      "summary": "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.",
      "url": "https://www.anchorterminal.com/tools/unified-to-mcp",
      "markdownUrl": "https://www.anchorterminal.com/tools/unified-to-mcp.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/unified-to-mcp.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/unified-to-mcp.json",
      "repo": "https://github.com/unified-to/unified-mcp-typescript",
      "license": "Proprietary service under Unified.to's Terms of Service. The linked repository is sample client code",
      "transports": [
        "streamable-http"
      ],
      "remoteUrl": "https://mcp-api.unified.to/mcp",
      "packages": [
        {
          "registry": "npm",
          "name": "@unified-api/typescript-sdk"
        }
      ],
      "auth": "mixed",
      "authNotes": "Self-serve. A person signs in to app.unified.to with Google or GitHub and copies a workspace API key. Sent as `Authorization: Bearer \u003ckey\u003e` with `connection=\u003cid\u003e` in the URL, it lists that connection's tools, and without a connection it lists workspace management tools. The docs warn that the key reaches every connection and the whole account. The management tool `get_unified_connection_mcp_url` in `user` mode returns a URL with a signed token limited to one connection. Enterprise-managed authorisation exchanges an identity provider's assertion at `POST /oauth/token` for an `ema_` token that lasts 3,600 seconds and carries category read and write scopes. Unified turns it on per workspace on request. `?token=` still works for keys and is marked deprecated.",
      "pricing": "paid",
      "pricingNotes": "Plans from $750 a month. Grow is $750+ with 750,000 API calls and $1.00 per 1,000 beyond that, Pro $1,500+ with 2,000,000 and $0.75, Scale $3,000+ with 6,000,000 and $0.50, and Enterprise is priced on contract. Each MCP tool call counts as one API request, and the FAQ says successful calls are billable. A tester account starts with 2,500 free API requests and Grow and Pro start with a 30-day free trial. The page does not say whether a card is needed (https://unified.to/pricing, checked 2026-10-09).",
      "priceSummary": "$750 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs index, the MCP docs pages, the pricing page or the Terms of Service (checked 2026-10-09).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 22019,
        "pypiWeekly": null,
        "asOf": "2026-10-09"
      },
      "docsUrl": "https://docs.unified.to/mcp/overview",
      "llmsTxt": "https://docs.unified.to/llms.txt",
      "openapi": "https://api.unified.to/openapi.json",
      "registryName": "to.unified/core",
      "capabilities": [
        "automation.apps",
        "automation.auth",
        "automation.actions",
        "agent.tools",
        "automation.webhooks"
      ],
      "tags": [
        "hosted",
        "mcp",
        "paid",
        "free-trial",
        "api-key",
        "openapi",
        "llms-txt",
        "typescript",
        "python",
        "status-page",
        "soc2",
        "mcp-registry",
        "closed-source",
        "data-residency"
      ],
      "lastRelease": "2026-10-08",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 61.9,
        "grade": "C",
        "agentReady": false,
        "rank": 455,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 5,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 71,
          "maintenance": 84,
          "payments": 30,
          "reliability": 73,
          "schema": 81,
          "security": 50,
          "transparency": 66
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": -3,
        "negativeNotes": [
          "23 September 2026. The MCP changelog entry of that date removed the SSE transport (`/sse` and `/sse/messages` now return HTTP 410), dropped `sse_url` from the `get_unified_connection_mcp_url` response, which the docs label a breaking change, and stopped regions resolving across one another. No earlier notice was found in the MCP changelog, the site changelog or the September product update. Whether customers were told privately was not established. The migration is a one-word URL change and is documented, so 3 points (https://docs.unified.to/mcp/changelog)."
        ],
        "verdict": "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.",
        "bestFor": "A B2B software team that already uses or plans to use Unified's API and wants the same customer connections exposed to an LLM, with data read live from the source app.",
        "strengths": [
          "A credential-free preview of the HubSpot tool list returned 78 tools, each with a JSON Schema input and `readOnlyHint`, `destructiveHint` and `idempotentHint` annotations, and 66 with an output schema",
          "The `permissions` and `tools` URL parameters limit which tools a connection lists, and `hide_sensitive` strips names, emails and telephone numbers from results",
          "A `user` mode URL carries a signed token limited to one connection, so the workspace API key need not be shared with an end customer",
          "Rate limits are published per plan, from 500 requests a minute on Test to 10,000 on Scale, shared across the workspace",
          "The privacy policy has an MCP section. It says end-customer data is not stored or cached and that Unified does not train models on any data",
          "The MCP changelog is dated and had entries on 22 July, 21 and 23 September and 8 October 2026"
        ],
        "weaknesses": [
          "The default credential is a workspace API key. The docs say it grants access to all connections and the whole Unified.to account",
          "The `/sse` transport and the `sse_url` response field were removed on 23 September 2026. No earlier notice was found in the MCP changelog, the site changelog or the September update",
          "The connection-scoped signed token travels in the URL as `?token=`. The docs mark `?token=` authentication as deprecated, with no end date set",
          "One HubSpot connection lists 78 tools whose definitions come to about 133 KB without output schemas and 343 KB with them",
          "No uptime SLA is published. The pricing page says SLAs come with a custom Enterprise plan",
          "No security.txt, bug bounty or disclosure policy was found, and the security page gives February 2025 as its last review",
          "The Terms of Service forbid probing, scanning or testing the vulnerability of the service. This matters before any probe is run",
          "The Terms of Service bar transmitting financial or medical information and birth dates through the service, while the product sells accounting and HR integrations"
        ],
        "agentNotes": [
          "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",
          "Send the key as `Authorization: Bearer \u003ckey\u003e` and put `connection=\u003cid\u003e` in the URL. Without `connection` the server lists workspace management tools, not the customer's data tools",
          "Pass `tools` or `permissions` in the URL before listing. An unfiltered connection can list dozens of tools with large output schemas",
          "Expect HTTP 429 on tool calls since 23 September 2026. Unified does not queue or retry, so back off and retry yourself",
          "Page with `limit` (100 at most on most endpoints) and `offset`, and stop when a page returns fewer records than `limit`"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 61.9
          }
        ],
        "editorialScores": {
          "ergonomics": 71,
          "maintenance": 84,
          "payments": 30,
          "reliability": 73,
          "schema": 81,
          "security": 50,
          "transparency": 61
        },
        "provenanceScore": 71
      },
      "connect": {
        "claudeCode": "claude mcp add --transport http unified-core https://mcp-api.unified.to/mcp \\\n    --header \"Authorization: Bearer $UNIFIED_API_KEY\"",
        "config": {
          "mcpServers": {
            "unified-mcp": {
              "headers": {
                "Authorization": "Bearer XXXXXXXX"
              },
              "url": "https://mcp-api.unified.to/mcp?connection=YYYYYYY"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/automation.apps",
        "tool": "https://letme.dev/unified-to-mcp"
      },
      "area": "business",
      "unitPrices": [
        {
          "item": "Grow plan",
          "unit": "month",
          "usd": 750,
          "note": "Listed as $750+ a month. 750,000 API calls a month, each tool call counting as one"
        },
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 1500,
          "note": "Listed as $1,500+ a month. 2,000,000 API calls a month"
        },
        {
          "item": "Scale plan",
          "unit": "month",
          "usd": 3000,
          "note": "Listed as $3,000+ a month. 6,000,000 API calls a month"
        },
        {
          "item": "Overage, Grow",
          "unit": "1k-requests",
          "usd": 1,
          "note": "Per 1,000 API calls beyond the plan allowance"
        },
        {
          "item": "Overage, Pro",
          "unit": "1k-requests",
          "usd": 0.75,
          "note": "Per 1,000 API calls beyond the plan allowance"
        },
        {
          "item": "Overage, Scale",
          "unit": "1k-requests",
          "usd": 0.5,
          "note": "Per 1,000 API calls beyond the plan allowance"
        }
      ],
      "provenance": {
        "legalEntity": "Unified API Inc.",
        "domain": "unified.to",
        "domainRegistered": "",
        "endpointOnVendorDomain": true,
        "terms": "https://unified.to/tos",
        "privacy": "https://unified.to/privacy",
        "statusPage": "https://status.unified.to",
        "changelog": "https://docs.unified.to/mcp/changelog",
        "securityTxt": "none",
        "checked": "2026-10-09",
        "notes": [
          "The Terms of Service say the site and the service are operated by Unified API Inc. and are governed by the laws of the Province of Ontario. The page carries no date.",
          "The DPA, last revised 19 March 2026, names UNIFIED API Inc., an Ontario corporation at 325 Front Street West, 4th floor, Toronto.",
          "The privacy policy covers unified.to, api.unified.to, app.unified.to and sub-domains, and has a section on the MCP server at mcp-api.unified.to.",
          "The MCP endpoints answer at mcp-api.unified.to, mcp-api-eu.unified.to and api-au.unified.to.",
          "unified.to/.well-known/security.txt returned 404.",
          "status.unified.to runs on Honeybadger and lists the API and the admin app in three regions and the authentication page. The MCP server has no component of its own. The docs say it runs as part of the API.",
          "The registration date of unified.to was not looked up. The .to registry publishes no RDAP record we know of.",
          "The trust centre at app.mycroft.io/trust/unified-to was not read."
        ],
        "score": 71
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/unified-to-mcp.json",
      "live": {
        "slug": "unified-to-mcp",
        "probe": {
          "target": "https://mcp-api.unified.to/mcp",
          "method": "mcp-initialize",
          "lastAt": "2026-10-10T02:55:14.218617238Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 379,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 273,
          "p95ms24h": 810,
          "samples24h": 115,
          "samples30d": 115,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 30,
              "ok": 30
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.unified.to",
          "indicator": "unknown",
          "summary": "no machine-readable status found",
          "checkedAt": "2026-10-10T00:51:21.9050769Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@unified-api/typescript-sdk",
            "version": "2.85.49",
            "seenAt": "2026-10-09T17:25:58.700208637Z"
          }
        ],
        "githubStars": 1,
        "npmWeekly": 22019,
        "pages": [
          {
            "url": "https://docs.unified.to/mcp/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:38:38.189021839Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "1e120959fd1f"
          },
          {
            "url": "https://unified.to/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:46:56.977008444Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "9dfee61b4129"
          },
          {
            "url": "https://unified.to/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-09T18:46:59.381440787Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "d1a0df8d57c0"
          },
          {
            "url": "https://unified.to/tos",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-09T18:47:01.426629726Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f8ca80a1186d"
          }
        ],
        "mcpTools": {
          "url": "https://mcp-api.unified.to/mcp",
          "checkedAt": "2026-10-09T21:40:56.064886705Z",
          "status": "auth",
          "note": "asks for credentials before listing its tools",
          "changedAt": "2026-10-09T21:40:56.064886705Z"
        },
        "updatedAt": "2026-10-10T02:55:14.218617238Z"
      }
    },
    "facts": [
      {
        "a": "MCP server",
        "b": "MCP server",
        "name": "Kind"
      },
      {
        "a": "StackOne Technologies Limited",
        "b": "Unified API Inc.",
        "name": "Vendor"
      },
      {
        "a": "https://mcp.stackone.com/mcp",
        "b": "https://mcp-api.unified.to/mcp",
        "name": "Hosted endpoint"
      },
      {
        "a": "Streamable HTTP, HTTP",
        "b": "Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under StackOne's SaaS Terms and Conditions. The Agent SDKs (`@stackone/ai`, `stackone-ai`) and the Defender package (`@stackone/defender`) are Apache-2.0",
        "b": "Proprietary service under Unified.to's Terms of Service. The linked repository is sample client code",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "com.stackone/mcp",
        "b": "to.unified/core",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-24",
        "b": "2026-10-08",
        "name": "Last release"
      },
      {
        "a": "2026-03-30",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2023-12-01",
        "b": "2026-10-02",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "30 stars, 277 npm/wk",
        "b": "22k npm/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "StackOne scores 69.1 (B) on agent readiness against Unified.to MCP Server's 61.9 (C), and leads in 5 of 7 scored categories.",
        "question": "Which is better for AI agents, StackOne or Unified.to MCP Server?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in.",
        "question": "Do StackOne and Unified.to MCP Server need an API key?"
      },
      {
        "answer": "Yes. StackOne has a hosted endpoint at https://mcp.stackone.com/mcp and Unified.to MCP Server at https://mcp-api.unified.to/mcp.",
        "question": "Can an agent call StackOne and Unified.to MCP Server without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 80 against 73",
          "Security \u0026 auth, 69 against 50",
          "Payments \u0026 pricing, 38 against 30"
        ],
        "also": [
          "Free to start without a card"
        ],
        "goodFor": "A company that wants one governed MCP endpoint for staff agents across business systems, and product teams embedding per-customer connections with HR, recruiting and CRM coverage.",
        "slug": "stackone",
        "watchFor": "Session token URLs (`https://api.stackone.com/mcp?token=...`) put the credential in the query string, cover one linked account and expire after one year by default"
      },
      {
        "aheadOn": null,
        "also": null,
        "goodFor": "A B2B software team that already uses or plans to use Unified's API and wants the same customer connections exposed to an LLM, with data read live from the source app.",
        "slug": "unified-to-mcp",
        "watchFor": "The default credential is a workspace API key. The docs say it grants access to all connections and the whole Unified.to account"
      }
    ],
    "job": {
      "capability": "automation.apps",
      "name": "App automation"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/composio-rube-vs-stackone.json",
        "title": "Composio (API + MCP) vs StackOne",
        "url": "https://www.anchorterminal.com/compare/composio-rube-vs-stackone"
      },
      {
        "json": "https://www.anchorterminal.com/compare/composio-rube-vs-unified-to-mcp.json",
        "title": "Composio (API + MCP) vs Unified.to MCP Server",
        "url": "https://www.anchorterminal.com/compare/composio-rube-vs-unified-to-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/merge-agent-handler-vs-stackone.json",
        "title": "Merge Agent Handler vs StackOne",
        "url": "https://www.anchorterminal.com/compare/merge-agent-handler-vs-stackone"
      },
      {
        "json": "https://www.anchorterminal.com/compare/merge-agent-handler-vs-unified-to-mcp.json",
        "title": "Merge Agent Handler vs Unified.to MCP Server",
        "url": "https://www.anchorterminal.com/compare/merge-agent-handler-vs-unified-to-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/one-vs-stackone.json",
        "title": "One vs StackOne",
        "url": "https://www.anchorterminal.com/compare/one-vs-stackone"
      },
      {
        "json": "https://www.anchorterminal.com/compare/one-vs-unified-to-mcp.json",
        "title": "One vs Unified.to MCP Server",
        "url": "https://www.anchorterminal.com/compare/one-vs-unified-to-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/smithery-vs-stackone.json",
        "title": "Smithery vs StackOne",
        "url": "https://www.anchorterminal.com/compare/smithery-vs-stackone"
      },
      {
        "json": "https://www.anchorterminal.com/compare/smithery-vs-unified-to-mcp.json",
        "title": "Smithery vs Unified.to MCP Server",
        "url": "https://www.anchorterminal.com/compare/smithery-vs-unified-to-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/stackone-vs-zapier-mcp.json",
        "title": "StackOne vs Zapier MCP (agent actions)",
        "url": "https://www.anchorterminal.com/compare/stackone-vs-zapier-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/unified-to-mcp-vs-zapier-mcp.json",
        "title": "Unified.to MCP Server vs Zapier MCP (agent actions)",
        "url": "https://www.anchorterminal.com/compare/unified-to-mcp-vs-zapier-mcp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letme-vs-stackone.json",
        "title": "letme vs StackOne",
        "url": "https://www.anchorterminal.com/compare/letme-vs-stackone"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letme-vs-unified-to-mcp.json",
        "title": "letme vs Unified.to MCP Server",
        "url": "https://www.anchorterminal.com/compare/letme-vs-unified-to-mcp"
      }
    ],
    "scores": [
      {
        "by": 7,
        "edge": "stackone",
        "key": "reliability",
        "name": "Reliability",
        "stackone": 80,
        "unified-to-mcp": 73,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 3,
        "edge": "unified-to-mcp",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "stackone": 78,
        "unified-to-mcp": 81,
        "weight": 13
      },
      {
        "by": 4,
        "edge": "stackone",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "stackone": 75,
        "unified-to-mcp": 71,
        "weight": 13
      },
      {
        "by": 19,
        "edge": "stackone",
        "key": "security",
        "name": "Security \u0026 auth",
        "stackone": 69,
        "unified-to-mcp": 50,
        "weight": 14
      },
      {
        "by": 8,
        "edge": "stackone",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "stackone": 38,
        "unified-to-mcp": 30,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 0,
        "edge": "",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "stackone": 84,
        "unified-to-mcp": 84,
        "weight": 7
      },
      {
        "by": 3,
        "edge": "stackone",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "stackone": 69,
        "unified-to-mcp": 66,
        "weight": 7
      }
    ],
    "summary": "StackOne scores 69.1 (B) on agent readiness against Unified.to MCP Server's 61.9 (C), and leads in 5 of 7 scored categories. Both do app automation.",
    "verdicts": {
      "stackone": "StackOne's MCP server signs each person in with OAuth, lets them grant individual accounts and actions, and by default exposes two search and execute tools in place of the full catalogue. Session token URLs carry the credential in the query string for a year by default, and the Consumption Schedule and pricing page disagree on whether failed calls are billed.",
      "unified-to-mcp": "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."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp",
    "json": "https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp.md",
    "slim": "https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp.min.md"
  },
  "markdown": "StackOne scores 69.1 (B) on agent readiness against Unified.to MCP Server's 61.9 (C), and leads in 5 of 7 scored categories. Both do app automation.\n\n- StackOne: grade B, 69.1/100, rank #198 of 950. Markdown https://www.anchorterminal.com/tools/stackone.md · JSON https://www.anchorterminal.com/api/v1/tools/stackone.json\n- Unified.to MCP Server: grade C, 61.9/100, rank #455 of 950. Markdown https://www.anchorterminal.com/tools/unified-to-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/unified-to-mcp.json\n- Best agent tool access platforms: https://www.anchorterminal.com/best/aggregator/index.md\n- All 28 tool access comparisons: https://www.anchorterminal.com/compare/aggregator/index.md\n\n## Which one, for what\n\n### StackOne (B)\n\nGood for: A company that wants one governed MCP endpoint for staff agents across business systems, and product teams embedding per-customer connections with HR, recruiting and CRM coverage.\n\nAhead on:\n- Reliability, 80 against 73\n- Security \u0026 auth, 69 against 50\n- Payments \u0026 pricing, 38 against 30\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: Session token URLs (`https://api.stackone.com/mcp?token=...`) put the credential in the query string, cover one linked account and expire after one year by default\n\n### Unified.to MCP Server (C)\n\nGood for: A B2B software team that already uses or plans to use Unified's API and wants the same customer connections exposed to an LLM, with data read live from the source app.\n\nWatch for: The default credential is a workspace API key. The docs say it grants access to all connections and the whole Unified.to account\n\n\n## Score by category\n\n| Category | Weight | StackOne | Unified.to MCP Server | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 73 | StackOne +7 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 78 | 81 | Unified.to MCP Server +3 |\n| Agent ergonomics | 13% (16.2 this run) | 75 | 71 | StackOne +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 69 | 50 | StackOne +19 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 38 | 30 | StackOne +8 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 84 | 84 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 69 | 66 | StackOne +3 |\n| Negative events | ≤15 | -2 | -3 | |\n| **Total** | | **69.1 · B** | **61.9 · C** | |\n\n## Facts side by side\n\n| Fact | StackOne | Unified.to MCP Server |\n| --- | --- | --- |\n| Kind | MCP server | MCP server |\n| Vendor | StackOne Technologies Limited | Unified API Inc. |\n| Hosted endpoint | `https://mcp.stackone.com/mcp` | `https://mcp-api.unified.to/mcp` |\n| Transports | Streamable HTTP, HTTP | Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under StackOne's SaaS Terms and Conditions. The Agent SDKs (`@stackone/ai`, `stackone-ai`) and the Defender package (`@stackone/defender`) are Apache-2.0 | Proprietary service under Unified.to's Terms of Service. The linked repository is sample client code |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `com.stackone/mcp` | `to.unified/core` |\n| Last release | 2026-09-24 | 2026-10-08 |\n| Terms last updated | 2026-03-30 | no date given |\n| Privacy policy last updated | 2023-12-01 | 2026-10-02 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | not found in the text |\n| Popularity | 30 stars, 277 npm/wk | 22k npm/wk |\n\n## Verdicts\n\n**StackOne.** StackOne's MCP server signs each person in with OAuth, lets them grant individual accounts and actions, and by default exposes two search and execute tools in place of the full catalogue. Session token URLs carry the credential in the query string for a year by default, and the Consumption Schedule and pricing page disagree on whether failed calls are billed.\n\n**Unified.to MCP Server.** 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.\n\n## Before you call either\n\n### StackOne\n\n1. Send `Accept: application/json,text/event-stream` on every MCP request to `https://api.stackone.com/mcp`, by POST only. Without it the server answers 406\n2. In `search_execute` mode call `{provider}_search_actions` first and pass the returned `action_id` to `{provider}_execute_action`. Never hardcode action ids\n3. Pass the API key as the Basic auth username with an empty password, and name the linked account in `x-account-id`\n4. On 429 or 408 wait the seconds given in `Retry-After`. StackOne has already retried a provider's 429 up to five times within a 60-second request lifetime\n5. On 412 read `errorCode` and `details.statusReasons`. `AccountErrorStatus` needs a person to re-authenticate the linked account\n\n### Unified.to MCP Server\n\n1. 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\n2. Send the key as `Authorization: Bearer \u003ckey\u003e` and put `connection=\u003cid\u003e` in the URL. Without `connection` the server lists workspace management tools, not the customer's data tools\n3. Pass `tools` or `permissions` in the URL before listing. An unfiltered connection can list dozens of tools with large output schemas\n4. Expect HTTP 429 on tool calls since 23 September 2026. Unified does not queue or retry, so back off and retry yourself\n5. Page with `limit` (100 at most on most endpoints) and `offset`, and stop when a page returns fewer records than `limit`\n\n## Questions\n\n### Which is better for AI agents, StackOne or Unified.to MCP Server?\n\nStackOne scores 69.1 (B) on agent readiness against Unified.to MCP Server's 61.9 (C), and leads in 5 of 7 scored categories.\n\n### Do StackOne and Unified.to MCP Server need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call StackOne and Unified.to MCP Server without installing anything?\n\nYes. StackOne has a hosted endpoint at https://mcp.stackone.com/mcp and Unified.to MCP Server at https://mcp-api.unified.to/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/stackone-vs-unified-to-mcp.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"stackone\", \"b\": \"unified-to-mcp\"}`. From a terminal: `anchor compare stackone unified-to-mcp`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/stackone.json and https://www.anchorterminal.com/api/v1/tools/unified-to-mcp.json\n\n## Other comparisons with StackOne or Unified.to MCP Server\n\n- [Composio (API + MCP) vs StackOne](https://www.anchorterminal.com/compare/composio-rube-vs-stackone.md)\n- [Composio (API + MCP) vs Unified.to MCP Server](https://www.anchorterminal.com/compare/composio-rube-vs-unified-to-mcp.md)\n- [Merge Agent Handler vs StackOne](https://www.anchorterminal.com/compare/merge-agent-handler-vs-stackone.md)\n- [Merge Agent Handler vs Unified.to MCP Server](https://www.anchorterminal.com/compare/merge-agent-handler-vs-unified-to-mcp.md)\n- [One vs StackOne](https://www.anchorterminal.com/compare/one-vs-stackone.md)\n- [One vs Unified.to MCP Server](https://www.anchorterminal.com/compare/one-vs-unified-to-mcp.md)\n- [Smithery vs StackOne](https://www.anchorterminal.com/compare/smithery-vs-stackone.md)\n- [Smithery vs Unified.to MCP Server](https://www.anchorterminal.com/compare/smithery-vs-unified-to-mcp.md)\n- [StackOne vs Zapier MCP (agent actions)](https://www.anchorterminal.com/compare/stackone-vs-zapier-mcp.md)\n- [Unified.to MCP Server vs Zapier MCP (agent actions)](https://www.anchorterminal.com/compare/unified-to-mcp-vs-zapier-mcp.md)\n- [letme vs StackOne](https://www.anchorterminal.com/compare/letme-vs-stackone.md)\n- [letme vs Unified.to MCP Server](https://www.anchorterminal.com/compare/letme-vs-unified-to-mcp.md)\n",
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