{
  "data": {
    "a": {
      "slug": "dropbox-sign",
      "name": "Dropbox Sign",
      "vendor": "Dropbox, Inc.",
      "vendorUrl": "https://sign.dropbox.com",
      "kind": "http-api",
      "category": "e-signatures",
      "summary": "Dropbox Sign (formerly HelloSign) is Dropbox's e-signature service. Its REST API sends documents or templates for signature, embeds signing in an iframe, reports status by webhook and returns signed PDFs with an audit trail.",
      "url": "https://www.anchorterminal.com/tools/dropbox-sign",
      "markdownUrl": "https://www.anchorterminal.com/tools/dropbox-sign.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/dropbox-sign.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/dropbox-sign.json",
      "repo": "https://github.com/hellosign/hellosign-openapi",
      "license": "Proprietary service under the Dropbox Sign terms of service. The OpenAPI spec repository is Apache 2.0 and the official SDKs are MIT",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.hellosign.com/v3",
      "packages": [
        {
          "registry": "npm",
          "name": "@dropbox/sign"
        },
        {
          "registry": "pypi",
          "name": "dropbox-sign"
        }
      ],
      "auth": "mixed",
      "authNotes": "A self-serve API key from the account's API settings page, sent as the HTTP Basic username with an empty password. Each account can hold up to four keys for rotation, and every key has full access to the account. OAuth 2.0 access tokens (Bearer) act on behalf of other users with seven scopes across two billing models, and OAuth apps need approval by Dropbox Sign support before production. Embedded apps can be self-published in the web app.",
      "pricing": "paid",
      "pricingNotes": "Production signature requests need a paid API plan, and the API answers 402 without one. Essentials is $900 a year ($75 a month) from 50 requests a month, Standard $3,000 a year ($250 a month) from 100, and Premium is quoted by sales. Test mode is free on every endpoint from a free account, so an agent can build and test without a contract (checked 2026-10-07).",
      "priceSummary": "Paid",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer docs, the OpenAPI spec or the pricing page (checked 2026-10-07).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 22,
        "npmWeekly": 149738,
        "pypiWeekly": null,
        "asOf": "2026-10-07"
      },
      "docsUrl": "https://developers.hellosign.com",
      "llmsTxt": "https://developers.hellosign.com/llms.txt",
      "openapi": "https://raw.githubusercontent.com/hellosign/hellosign-openapi/main/openapi.yaml",
      "capabilities": [
        "esign.send",
        "esign.templates",
        "esign.embed",
        "esign.status"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "api-key",
        "oauth",
        "openapi",
        "llms-txt",
        "webhooks",
        "sandbox",
        "python",
        "typescript",
        "java",
        "php",
        "ruby",
        "dotnet",
        "status-page",
        "bug-bounty",
        "soc2"
      ],
      "lastRelease": "2026-09-10",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.9,
        "grade": "B",
        "agentReady": false,
        "rank": 171,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 1,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 72,
          "maintenance": 85,
          "payments": 25,
          "reliability": 75,
          "schema": 88,
          "security": 65,
          "transparency": 68
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-07"
        },
        "negative": 0,
        "verdict": "A public OpenAPI 3.0.3 spec, llms.txt, six official SDKs and a free test mode let an agent build the whole flow before paying. Production sends need a paid plan from $900 a year, the API key has full account access, and no idempotency keys were found in the reviewed documentation.",
        "bestFor": "An agent that sends a prepared PDF or a saved template for signature from one company account and tracks it to completion by webhook or polling, with the signed PDF and audit trail at the end.",
        "strengths": [
          "Public OpenAPI 3.0.3 spec with 74 operations, plus llms.txt and a Markdown copy of every docs page",
          "Free test mode works on every endpoint from a free account, with watermarked, non-binding requests that don't count against quota",
          "Error catalogue of 20 HTTP error names with cause, remediation and a retryable flag, also embedded in the spec as `x-error-codes`",
          "Rate limits published with numbers (100 a minute standard, 25 on higher-tier endpoints, 10 in test mode) and returned in response headers",
          "Official SDKs in six languages at version 1.13.0, released 10 September 2026, with semantic versioning"
        ],
        "weaknesses": [
          "No idempotency keys found in the docs or the spec, so a retried send can create a second signature request",
          "An API key grants full access to the account, with no scoped or read-only keys. Scopes exist only on OAuth tokens",
          "OAuth apps need manual approval by Dropbox Sign support before production use",
          "The terms supply the service as is, and no SLA was found. A major outage on 2 January 2026 lasted 3 hours 12 minutes",
          "Embedded signing and bulk send need the Standard plan ($3,000 a year), and embedded templates need Premium, priced by quote"
        ],
        "agentNotes": [
          "Send `test_mode=true` while building. Test requests are free, watermarked and not legally binding, and are limited to 10 requests a minute",
          "Don't blind-retry a send after a timeout. No idempotency key exists, so list requests by `metadata` or title first to check whether it was created",
          "Authenticate with HTTP Basic, the API key as username and an empty password. Keep the key out of URLs, although the docs show that form",
          "Answer every webhook with HTTP 200 and the body `Hello API Event Received`, and verify `event_hash`. Ten consecutive failures clear the callback URL",
          "Treat a 200 from cancel as queued only. Confirmation arrives later as a `signature_request_canceled` event"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68.9
          }
        ],
        "editorialScores": {
          "ergonomics": 72,
          "maintenance": 85,
          "payments": 25,
          "reliability": 75,
          "schema": 88,
          "security": 65,
          "transparency": 51
        },
        "provenanceScore": 85
      },
      "connect": {
        "install": "npm install @dropbox/sign",
        "http": "curl \"https://api.hellosign.com/v3/template/list\" \\\n    -u \"${API_KEY}:\""
      },
      "letme": {
        "capability": "https://letme.dev/esign.send",
        "tool": "https://letme.dev/dropbox-sign"
      },
      "area": "business",
      "provenance": {
        "legalEntity": "Dropbox, Inc.",
        "domain": "hellosign.com",
        "domainRegistered": "2004-03-05",
        "endpointOnVendorDomain": true,
        "terms": "https://sign.dropbox.com/about/terms",
        "privacy": "https://sign.dropbox.com/about/privacy",
        "statusPage": "https://status.hellosign.com",
        "changelog": "https://developers.hellosign.com/changelog",
        "securityTxt": "none",
        "checked": "2026-10-07",
        "notes": [
          "The Dropbox Sign terms (effective 7 January 2025) put the agreement with Dropbox, Inc. for customers in the United States, Canada and Mexico and with Dropbox International Unlimited Company elsewhere.",
          "The API host is api.hellosign.com and the docs are at developers.hellosign.com. The marketing site is sign.dropbox.com. RDAP gives 2004-03-05 for hellosign.com and 1995-06-28 for dropbox.com.",
          "sign.dropbox.com/.well-known/security.txt and api.hellosign.com/.well-known/security.txt return 404. www.dropbox.com/.well-known/security.txt serves a plain-text file that names the Intigriti bug bounty and disclosure programmes without the standard Contact and Expires fields.",
          "The privacy policy is dated 14 January 2025. The data processing agreement at assets.dropbox.com is dated 25 October 2021.",
          "The sub-processor list at www.dropbox.com/privacy/subprocessor/sign returned only its title to our reader."
        ],
        "score": 85
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/dropbox-sign.json",
      "live": {
        "slug": "dropbox-sign",
        "probe": {
          "target": "https://api.hellosign.com/v3",
          "method": "get",
          "lastAt": "2026-10-08T23:26:30.061385274Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 138,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 138,
          "p95ms24h": 382,
          "samples24h": 87,
          "samples30d": 87,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 87,
              "ok": 87
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.hellosign.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T23:23:55.056091933Z"
        },
        "versions": [
          {
            "registry": "npm",
            "name": "@dropbox/sign",
            "version": "1.13.0",
            "seenAt": "2026-10-08T16:09:21.702754102Z"
          },
          {
            "registry": "pypi",
            "name": "dropbox-sign",
            "version": "1.13.0",
            "released": "2026-09-10",
            "seenAt": "2026-10-08T16:09:25.156865046Z"
          }
        ],
        "githubStars": 22,
        "npmWeekly": 149738,
        "pypiWeekly": 73874,
        "securityTxt": {
          "url": "https://hellosign.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:39:08.009752876Z"
        },
        "pages": [
          {
            "url": "https://developers.hellosign.com/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:17:43.499814076Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "df5ec179b075"
          },
          {
            "url": "https://sign.dropbox.com/about/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:24:17.794548551Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "30f2bccc1007"
          },
          {
            "url": "https://sign.dropbox.com/about/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:24:19.844597175Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "daf78169f086"
          }
        ],
        "updatedAt": "2026-10-08T23:26:30.061385274Z"
      }
    },
    "answer": "Dropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust.",
    "b": {
      "slug": "signnow",
      "name": "airSlate SignNow",
      "vendor": "airSlate, Inc.",
      "vendorUrl": "https://www.signnow.com",
      "kind": "http-api",
      "category": "e-signatures",
      "summary": "airSlate SignNow is an e-signature service. Its REST API prepares documents from templates, sends signature invites, embeds signing in other apps and reports status through webhooks. A hosted MCP server gives AI agents 20 documented tools over the same account.",
      "url": "https://www.anchorterminal.com/tools/signnow",
      "markdownUrl": "https://www.anchorterminal.com/tools/signnow.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/signnow.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/signnow.json",
      "repo": "https://github.com/signnow/sn-mcp-server",
      "license": "Proprietary service under the SignNow Terms of Service. The MCP server and the SDKs on GitHub are MIT",
      "transports": [
        "http",
        "streamable-http",
        "stdio"
      ],
      "remoteUrl": "https://api.signnow.com",
      "packages": [
        {
          "registry": "pypi",
          "name": "signnow-mcp-server"
        },
        {
          "registry": "npm",
          "name": "@signnow/api-client"
        },
        {
          "registry": "pypi",
          "name": "signnow-python-sdk"
        }
      ],
      "auth": "mixed",
      "authNotes": "Access is self-serve. A free developer account creates an application and an API key in the API dashboard, with no app review. The API takes a Bearer API key (no expiry, all API requests) or an OAuth 2.0 access token from POST /oauth2/token using the password, refresh_token or authorization_code grant. The `scope` parameter limits a token to URL patterns such as `document/* GET/user`, and the default `*` allows every action. The hosted MCP server uses OAuth with PKCE and dynamic client registration, and the local package takes an API key or account email, password and Basic token.",
      "pricing": "usage",
      "pricingNotes": "Paid API plans are priced per signature invite, from $2 per invite at 500 invites to $1.20 at 5,000 per the developers page. An agent can start without a contract. Development mode is free on the production host, with 500 requests an hour and up to 500 invites, and documents carry a Development watermark. The developers page also advertises 250 free signature invites. Live mode needs a paid API plan, an API free trial or a site licence. The full plan table is a JavaScript page we couldn't read (checked 2026-10-07).",
      "priceSummary": "$2 / tx",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI spec, the developers page or the MCP server repository (checked 2026-10-07).",
        "endpoints": []
      },
      "toolCount": 21,
      "popularity": {
        "githubStars": 8,
        "npmWeekly": 7740,
        "pypiWeekly": 5269,
        "asOf": "2026-10-07"
      },
      "docsUrl": "https://docs.signnow.com",
      "llmsTxt": "https://docs.signnow.com/llms.txt",
      "openapi": "https://docs.signnow.com/api/openapi.json",
      "registryName": "io.github.signnow/sn-mcp-server",
      "capabilities": [
        "esign.send",
        "esign.templates",
        "esign.embed",
        "esign.status",
        "contracts.generate",
        "pdf.forms"
      ],
      "tags": [
        "hosted",
        "usage-based",
        "free-tier",
        "sandbox",
        "mcp",
        "oauth",
        "api-key",
        "openapi",
        "llms-txt",
        "webhooks",
        "php",
        "python",
        "typescript",
        "dotnet",
        "java",
        "status-page",
        "sla",
        "bug-bounty",
        "soc2"
      ],
      "lastRelease": "2026-09-03",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68.5,
        "grade": "B",
        "agentReady": false,
        "rank": 178,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 2,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 66,
          "maintenance": 72,
          "payments": 35,
          "reliability": 93,
          "schema": 81,
          "security": 62,
          "transparency": 74
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-07"
        },
        "negative": -2,
        "negativeNotes": [
          "Until release v2.7.0 on 8 July 2026 the MCP server's signing links carried the user's raw SignNow access token in the URL query string. The fix and a regression test are documented in the pull request, so we deducted 2 (https://github.com/signnow/sn-mcp-server/pull/65)."
        ],
        "verdict": "The REST API has a public OpenAPI 3.0 spec with 354 operations, Markdown docs, a free Development mode with 500 invites and a hosted MCP server with OAuth. API keys don't expire and carry full account access, no idempotency keys were found, and the MCP server's GitHub repository was archived when checked on 7 October 2026.",
        "bestFor": "An agent that sends agreements from templates, embeds signing in another product or tracks invites, and teams that want per-invite pricing with a free test mode.",
        "strengths": [
          "Public OpenAPI 3.0.3 spec with 354 operations, 342 of them with examples, plus llms.txt and a Markdown copy of every docs page",
          "Development mode is free on the production host, with 500 requests an hour and up to 500 signature invites without a plan",
          "Hosted MCP server at mcp-server.signnow.com/mcp with OAuth, PKCE and dynamic client registration, and read-only and destructive hints on its tools",
          "Webhooks carry an HMAC SHA-256 signature header and a documented retry schedule, and the API dashboard logs every request and delivery attempt",
          "Status page shows three minor incidents since April 2026, none on the API component, and a 99.9 per cent SLA with credits is published"
        ],
        "weaknesses": [
          "API keys don't expire and work for all API requests. Narrower access needs an OAuth token requested with a URL-pattern scope",
          "No idempotency key was found in the spec or guides, and each signature invite sent is charged",
          "The sn-mcp-server GitHub repository was archived when checked on 7 October 2026, while the docs still send issue reports there",
          "Numeric error codes aren't unique. The docs tell callers to identify a problem by its message text",
          "The API plan table is a JavaScript page we couldn't read. Only the per-invite range on the developers page is public text"
        ],
        "agentNotes": [
          "Call https://api.signnow.com with `Authorization: Bearer \u003cAPI key or access token\u003e`. Development and Live share this host, and Development documents carry a watermark",
          "Request OAuth tokens with a narrow `scope` such as `document/* GET/user`. The default `*` grants every API action",
          "Read `X-RateLimit-Remaining` and `X-RateLimit-Reset` on each response. The limit is 500 requests an hour in Development and 1,000 in Live, and 429 has no Retry-After",
          "Check invite status before resending. No idempotency key exists, and a repeated invite call counts as another charged invite",
          "Set `secret_key` when creating an event subscription and verify `X-SignNow-Signature` (HMAC SHA-256 of the body) on every callback"
        ],
        "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": 68.5
          }
        ],
        "editorialScores": {
          "ergonomics": 66,
          "maintenance": 72,
          "payments": 35,
          "reliability": 93,
          "schema": 81,
          "security": 62,
          "transparency": 62
        },
        "provenanceScore": 86
      },
      "connect": {
        "install": "uvx --from signnow-mcp-server sn-mcp serve",
        "http": "curl --request POST \\\n  --url https://api.signnow.com/v2/documents/url \\\n  --header 'Authorization: Bearer {{your_api_key}}' \\\n  --header 'Content-Type: application/json' \\\n  --data '{\"url\": \"https://www.signnow.com/whitepapers/signnow_api_test_invite.pdf\"}'",
        "config": {
          "mcpServers": {
            "signnow-local": {
              "args": [
                "--from",
                "signnow-mcp-server",
                "sn-mcp",
                "serve"
              ],
              "command": "uvx",
              "env": {
                "SIGNNOW_API_KEY": "your-api-key"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/esign.send",
        "tool": "https://letme.dev/signnow"
      },
      "area": "business",
      "unitPrices": [
        {
          "item": "Signature invite, 500-invite plan",
          "unit": "tx",
          "usd": 2,
          "note": "starting price per the developers page on 2026-10-07"
        },
        {
          "item": "Signature invite, 5,000-invite plan",
          "unit": "tx",
          "usd": 1.2,
          "note": "per the developers page on 2026-10-07"
        },
        {
          "item": "Development mode",
          "unit": "tx",
          "usd": 0,
          "note": "up to 500 invites without a plan, watermarked"
        }
      ],
      "provenance": {
        "legalEntity": "airSlate, Inc.",
        "domain": "signnow.com",
        "domainRegistered": "2001-04-05",
        "endpointOnVendorDomain": true,
        "terms": "https://legal.signnow.com/terms",
        "privacy": "https://legal.signnow.com/privacy-notice",
        "statusPage": "https://status.signnow.com",
        "changelog": "https://docs.signnow.com/docs/signnow-api-changelog",
        "securityTxt": "none",
        "checked": "2026-10-07",
        "notes": [
          "The privacy notice (last updated 12 August 2026) names airSlate, Inc., 17 Station Street, Ste. 203, Brookline, MA 02445. The contracting entity table (last updated 1 October 2026) lists seven airSlate companies, and the one that applies depends on the service, location and payment method.",
          "The API answers at api.signnow.com and the hosted MCP server at mcp-server.signnow.com, both signnow.com subdomains.",
          "www.signnow.com/.well-known/security.txt returns 404. Vulnerability reports go through the airSlate bug bounty programme on HackerOne, which needs an invitation requested by email (policy last updated 7 October 2025).",
          "The terms of service were last updated 2 March 2023, the SLA 11 January 2023 and the DPA 1 July 2025.",
          "RDAP for signnow.com gives a registration date of 2001-04-05 and GoDaddy.com, LLC as registrar."
        ],
        "score": 86
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/signnow.json",
      "live": {
        "slug": "signnow",
        "probe": {
          "target": "https://api.signnow.com",
          "method": "get",
          "lastAt": "2026-10-08T23:26:44.241196929Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 223,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 246,
          "p95ms24h": 541,
          "samples24h": 87,
          "samples30d": 87,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 87,
              "ok": 87
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.signnow.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T23:24:19.035533476Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "signnow/sn-mcp-server",
            "version": "v3.1.0",
            "released": "2026-07-27",
            "seenAt": "2026-10-08T16:29:25.573934814Z"
          },
          {
            "registry": "npm",
            "name": "@signnow/api-client",
            "version": "3.2.0",
            "seenAt": "2026-10-08T16:29:23.703958905Z"
          },
          {
            "registry": "pypi",
            "name": "signnow-mcp-server",
            "version": "3.1.0",
            "released": "2026-07-27",
            "seenAt": "2026-10-08T16:29:23.463809186Z"
          },
          {
            "registry": "pypi",
            "name": "signnow-python-sdk",
            "version": "3.0.0",
            "released": "2026-04-22",
            "seenAt": "2026-10-08T16:29:24.862815003Z"
          }
        ],
        "githubStars": 8,
        "npmWeekly": 7740,
        "pypiWeekly": 70,
        "securityTxt": {
          "url": "https://signnow.com/.well-known/security.txt",
          "state": "unknown",
          "checkedAt": "2026-10-08T15:38:43.774562572Z"
        },
        "pages": [
          {
            "url": "https://docs.signnow.com/docs/signnow-api-changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:19:25.175101948Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "f7e65ecd983f"
          },
          {
            "url": "https://legal.signnow.com/privacy-notice",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:31.1526774Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "379fe4bab8f4"
          },
          {
            "url": "https://legal.signnow.com/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:33.269754055Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "ab6de5f8c31e"
          }
        ],
        "updatedAt": "2026-10-08T23:26:44.241196929Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Dropbox, Inc.",
        "b": "airSlate, Inc.",
        "name": "Vendor"
      },
      {
        "a": "https://api.hellosign.com/v3",
        "b": "https://api.signnow.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, Streamable HTTP, stdio",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Paid",
        "b": "Pay per use",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the Dropbox Sign terms of service. The OpenAPI spec repository is Apache 2.0 and the official SDKs are MIT",
        "b": "Proprietary service under the SignNow Terms of Service. The MCP server and the SDKs on GitHub are MIT",
        "name": "Licence"
      },
      {
        "a": "none",
        "b": "21",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "yes",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "not listed",
        "b": "io.github.signnow/sn-mcp-server",
        "name": "MCP registry"
      },
      {
        "a": "2026-09-10",
        "b": "2026-09-03",
        "name": "Last release"
      },
      {
        "a": "2025-01-07",
        "b": "2023-03-02",
        "name": "Terms last updated"
      },
      {
        "a": "2025-01-14",
        "b": "2026-08-12",
        "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": "yes",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "22 stars, 150k npm/wk",
        "b": "8 stars, 7.7k npm/wk, 5.3k PyPI/wk",
        "name": "Popularity"
      }
    ],
    "faq": [
      {
        "answer": "Dropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust.",
        "question": "Which is better for AI agents, Dropbox Sign or airSlate SignNow?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in.",
        "question": "Do Dropbox Sign and airSlate SignNow need an API key?"
      },
      {
        "answer": "Yes. Dropbox Sign has a hosted endpoint at https://api.hellosign.com/v3 and airSlate SignNow at https://api.signnow.com.",
        "question": "Can an agent call Dropbox Sign and airSlate SignNow without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Schema \u0026 documentation, 88 against 81",
          "Agent ergonomics, 72 against 66",
          "Maintenance \u0026 community, 85 against 72"
        ],
        "also": null,
        "goodFor": "An agent that sends a prepared PDF or a saved template for signature from one company account and tracks it to completion by webhook or polling, with the signed PDF and audit trail at the end.",
        "slug": "dropbox-sign",
        "watchFor": "No idempotency keys found in the docs or the spec, so a retried send can create a second signature request"
      },
      {
        "aheadOn": [
          "Reliability, 93 against 75",
          "Payments \u0026 pricing, 35 against 25",
          "Transparency \u0026 trust, 74 against 68"
        ],
        "also": [
          "Runs on your own machine"
        ],
        "goodFor": "An agent that sends agreements from templates, embeds signing in another product or tracks invites, and teams that want per-invite pricing with a free test mode.",
        "slug": "signnow",
        "watchFor": "API keys don't expire and work for all API requests. Narrower access needs an OAuth token requested with a URL-pattern scope"
      }
    ],
    "job": {
      "capability": "esign.send",
      "name": "Esign send"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/documenso-vs-dropbox-sign.json",
        "title": "Documenso vs Dropbox Sign",
        "url": "https://www.anchorterminal.com/compare/documenso-vs-dropbox-sign"
      },
      {
        "json": "https://www.anchorterminal.com/compare/documenso-vs-signnow.json",
        "title": "Documenso vs airSlate SignNow",
        "url": "https://www.anchorterminal.com/compare/documenso-vs-signnow"
      },
      {
        "json": "https://www.anchorterminal.com/compare/docusign-vs-dropbox-sign.json",
        "title": "Docusign vs Dropbox Sign",
        "url": "https://www.anchorterminal.com/compare/docusign-vs-dropbox-sign"
      },
      {
        "json": "https://www.anchorterminal.com/compare/docusign-vs-signnow.json",
        "title": "Docusign vs airSlate SignNow",
        "url": "https://www.anchorterminal.com/compare/docusign-vs-signnow"
      },
      {
        "json": "https://www.anchorterminal.com/compare/dropbox-sign-vs-pandadoc.json",
        "title": "Dropbox Sign vs PandaDoc",
        "url": "https://www.anchorterminal.com/compare/dropbox-sign-vs-pandadoc"
      },
      {
        "json": "https://www.anchorterminal.com/compare/pandadoc-vs-signnow.json",
        "title": "PandaDoc vs airSlate SignNow",
        "url": "https://www.anchorterminal.com/compare/pandadoc-vs-signnow"
      }
    ],
    "scores": [
      {
        "by": 18,
        "dropbox-sign": 75,
        "edge": "signnow",
        "key": "reliability",
        "name": "Reliability",
        "signnow": 93,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 7,
        "dropbox-sign": 88,
        "edge": "dropbox-sign",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "signnow": 81,
        "weight": 13
      },
      {
        "by": 6,
        "dropbox-sign": 72,
        "edge": "dropbox-sign",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "signnow": 66,
        "weight": 13
      },
      {
        "by": 3,
        "dropbox-sign": 65,
        "edge": "dropbox-sign",
        "key": "security",
        "name": "Security \u0026 auth",
        "signnow": 62,
        "weight": 14
      },
      {
        "by": 10,
        "dropbox-sign": 25,
        "edge": "signnow",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "signnow": 35,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 13,
        "dropbox-sign": 85,
        "edge": "dropbox-sign",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "signnow": 72,
        "weight": 7
      },
      {
        "by": 6,
        "dropbox-sign": 68,
        "edge": "signnow",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "signnow": 74,
        "weight": 7
      }
    ],
    "summary": "Dropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust. Both do esign send.",
    "verdicts": {
      "dropbox-sign": "A public OpenAPI 3.0.3 spec, llms.txt, six official SDKs and a free test mode let an agent build the whole flow before paying. Production sends need a paid plan from $900 a year, the API key has full account access, and no idempotency keys were found in the reviewed documentation.",
      "signnow": "The REST API has a public OpenAPI 3.0 spec with 354 operations, Markdown docs, a free Development mode with 500 invites and a hosted MCP server with OAuth. API keys don't expire and carry full account access, no idempotency keys were found, and the MCP server's GitHub repository was archived when checked on 7 October 2026."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow",
    "json": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.md",
    "slim": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.min.md"
  },
  "markdown": "Dropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust. Both do esign send.\n\n- Dropbox Sign: grade B, 68.9/100, rank #171 of 722. Markdown https://www.anchorterminal.com/tools/dropbox-sign.md · JSON https://www.anchorterminal.com/api/v1/tools/dropbox-sign.json\n- airSlate SignNow: grade B, 68.5/100, rank #178 of 722. Markdown https://www.anchorterminal.com/tools/signnow.md · JSON https://www.anchorterminal.com/api/v1/tools/signnow.json\n\n## Which one, for what\n\n### Dropbox Sign (B)\n\nGood for: An agent that sends a prepared PDF or a saved template for signature from one company account and tracks it to completion by webhook or polling, with the signed PDF and audit trail at the end.\n\nAhead on:\n- Schema \u0026 documentation, 88 against 81\n- Agent ergonomics, 72 against 66\n- Maintenance \u0026 community, 85 against 72\n\nWatch for: No idempotency keys found in the docs or the spec, so a retried send can create a second signature request\n\n### airSlate SignNow (B)\n\nGood for: An agent that sends agreements from templates, embeds signing in another product or tracks invites, and teams that want per-invite pricing with a free test mode.\n\nAhead on:\n- Reliability, 93 against 75\n- Payments \u0026 pricing, 35 against 25\n- Transparency \u0026 trust, 74 against 68\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: API keys don't expire and work for all API requests. Narrower access needs an OAuth token requested with a URL-pattern scope\n\n\n## Score by category\n\n| Category | Weight | Dropbox Sign | airSlate SignNow | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 93 | airSlate SignNow +18 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 81 | Dropbox Sign +7 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 66 | Dropbox Sign +6 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 62 | Dropbox Sign +3 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 25 | 35 | airSlate SignNow +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 72 | Dropbox Sign +13 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 68 | 74 | airSlate SignNow +6 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **68.9 · B** | **68.5 · B** | |\n\n## Facts side by side\n\n| Fact | Dropbox Sign | airSlate SignNow |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Dropbox, Inc. | airSlate, Inc. |\n| Hosted endpoint | `https://api.hellosign.com/v3` | `https://api.signnow.com` |\n| Transports | HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Paid | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under the Dropbox Sign terms of service. The OpenAPI spec repository is Apache 2.0 and the official SDKs are MIT | Proprietary service under the SignNow Terms of Service. The MCP server and the SDKs on GitHub are MIT |\n| Tools exposed | none | 21 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.signnow/sn-mcp-server` |\n| Last release | 2026-09-10 | 2026-09-03 |\n| Terms last updated | 2025-01-07 | 2023-03-02 |\n| Privacy policy last updated | 2025-01-14 | 2026-08-12 |\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 | yes |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 22 stars, 150k npm/wk | 8 stars, 7.7k npm/wk, 5.3k PyPI/wk |\n\n## Verdicts\n\n**Dropbox Sign.** A public OpenAPI 3.0.3 spec, llms.txt, six official SDKs and a free test mode let an agent build the whole flow before paying. Production sends need a paid plan from $900 a year, the API key has full account access, and no idempotency keys were found in the reviewed documentation.\n\n**airSlate SignNow.** The REST API has a public OpenAPI 3.0 spec with 354 operations, Markdown docs, a free Development mode with 500 invites and a hosted MCP server with OAuth. API keys don't expire and carry full account access, no idempotency keys were found, and the MCP server's GitHub repository was archived when checked on 7 October 2026.\n\n## Before you call either\n\n### Dropbox Sign\n\n1. Send `test_mode=true` while building. Test requests are free, watermarked and not legally binding, and are limited to 10 requests a minute\n2. Don't blind-retry a send after a timeout. No idempotency key exists, so list requests by `metadata` or title first to check whether it was created\n3. Authenticate with HTTP Basic, the API key as username and an empty password. Keep the key out of URLs, although the docs show that form\n4. Answer every webhook with HTTP 200 and the body `Hello API Event Received`, and verify `event_hash`. Ten consecutive failures clear the callback URL\n5. Treat a 200 from cancel as queued only. Confirmation arrives later as a `signature_request_canceled` event\n\n### airSlate SignNow\n\n1. Call https://api.signnow.com with `Authorization: Bearer \u003cAPI key or access token\u003e`. Development and Live share this host, and Development documents carry a watermark\n2. Request OAuth tokens with a narrow `scope` such as `document/* GET/user`. The default `*` grants every API action\n3. Read `X-RateLimit-Remaining` and `X-RateLimit-Reset` on each response. The limit is 500 requests an hour in Development and 1,000 in Live, and 429 has no Retry-After\n4. Check invite status before resending. No idempotency key exists, and a repeated invite call counts as another charged invite\n5. Set `secret_key` when creating an event subscription and verify `X-SignNow-Signature` (HMAC SHA-256 of the body) on every callback\n\n## Questions\n\n### Which is better for AI agents, Dropbox Sign or airSlate SignNow?\n\nDropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust.\n\n### Do Dropbox Sign and airSlate SignNow need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Dropbox Sign and airSlate SignNow without installing anything?\n\nYes. Dropbox Sign has a hosted endpoint at https://api.hellosign.com/v3 and airSlate SignNow at https://api.signnow.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.json, and with the fewest tokens: https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"dropbox-sign\", \"b\": \"signnow\"}`. From a terminal: `anchor compare dropbox-sign signnow`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/dropbox-sign.json and https://www.anchorterminal.com/api/v1/tools/signnow.json\n\n## Other comparisons with Dropbox Sign or airSlate SignNow\n\n- [Documenso vs Dropbox Sign](https://www.anchorterminal.com/compare/documenso-vs-dropbox-sign.md)\n- [Documenso vs airSlate SignNow](https://www.anchorterminal.com/compare/documenso-vs-signnow.md)\n- [Docusign vs Dropbox Sign](https://www.anchorterminal.com/compare/docusign-vs-dropbox-sign.md)\n- [Docusign vs airSlate SignNow](https://www.anchorterminal.com/compare/docusign-vs-signnow.md)\n- [Dropbox Sign vs PandaDoc](https://www.anchorterminal.com/compare/dropbox-sign-vs-pandadoc.md)\n- [PandaDoc vs airSlate SignNow](https://www.anchorterminal.com/compare/pandadoc-vs-signnow.md)\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-08",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.4",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Compare",
        "url": "https://www.anchorterminal.com/compare/"
      },
      {
        "name": "Dropbox Sign vs airSlate SignNow",
        "url": ""
      }
    ],
    "description": "Dropbox Sign and airSlate SignNow score within a point of each other on agent readiness, 68.9 (B) and 68.5 (B). airSlate SignNow leads on reliability, payments \u0026 pricing and transparency \u0026 trust. Both do esign send. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "Dropbox Sign B 68.9",
      "airSlate SignNow B 68.5",
      "scores"
    ],
    "h1": "Dropbox Sign vs airSlate SignNow",
    "image": "https://www.anchorterminal.com/assets/og/compare-dropbox-sign-vs-signnow.png",
    "path": "/compare/dropbox-sign-vs-signnow",
    "published": "2026-10-01",
    "section": "tools",
    "title": "Dropbox Sign vs airSlate SignNow for AI agents, B 68.9 vs B 68.5",
    "toc": null,
    "updated": "2026-10-08",
    "url": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow"
  },
  "tokens": {
    "markdown": 2100,
    "slim": 730
  },
  "version": 1
}