{ "data": { "a": { "slug": "adobe-acrobat-sign", "name": "Adobe Acrobat Sign", "vendor": "Adobe Inc.", "vendorUrl": "https://www.adobe.com/acrobat/business/sign.html", "kind": "http-api", "category": "e-signatures", "summary": "Adobe Acrobat Sign is an e-signature service. Its REST API v6 creates agreements from uploaded files or library templates, sends them for signature, returns signing URLs and audit trails, and reports status through webhooks.", "url": "https://www.anchorterminal.com/tools/adobe-acrobat-sign", "markdownUrl": "https://www.anchorterminal.com/tools/adobe-acrobat-sign.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/adobe-acrobat-sign.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/adobe-acrobat-sign.json", "repo": "https://github.com/adobe/acrobat-sign", "license": "Proprietary service under the Adobe General Terms of Use and, for enterprise customers, the Acrobat Sign product terms. The documentation and SDK repository on GitHub is MIT", "transports": [ "http" ], "remoteUrl": "https://api.na1.adobesign.com/api/rest/v6", "packages": [], "auth": "oauth", "authNotes": "Access is self-serve for a developer's own account. A person creates an Adobe ID, signs up for the free Developer Edition and creates an API application in the Acrobat Sign web UI, then completes an OAuth 2.0 authorisation code flow in a browser. Access tokens last one hour and refresh tokens expire after 60 days without use. Scopes are set per application and per token, each with a `:self`, `:group` or `:account` modifier. Only a group or account admin can grant the wider modifiers. PARTNER applications that reach other customers' accounts need Adobe's certification.", "pricing": "paid", "pricingNotes": "No public price for API use. Acrobat Sign Solutions, the product Adobe sells for API and enterprise e-signing, is by quote. Acrobat team plans with e-signatures are public at $16.99 to $29.99 a licence a month, and the pricing page doesn't say whether they include API access. An agent's owner can start without a contract on the free Developer Edition, where test documents carry a test label. Whether sign-up asks for a card isn't stated (checked 2026-10-08).", "priceSummary": "$16.99 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer guide, the release notes or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 26, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developer.adobe.com/acrobat-sign/", "capabilities": [ "esign.send", "esign.templates", "esign.embed", "esign.status" ], "tags": [ "hosted", "enterprise", "oauth", "webhooks", "closed-source", "sales-led", "free-tier", "status-page", "sla", "bug-bounty" ], "lastRelease": "2025-11-01", "graded": true, "anchor": { "graded": true, "score": 52.6, "grade": "D", "agentReady": false, "rank": 652, "ranked": true, "rankOf": 842, "categoryRank": 6, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 10, "payments": 25, "reliability": 66, "schema": 54, "security": 66, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The REST API has OAuth 2.0 scopes that can be limited to one user, a group or the account, `Retry-After` on throttled calls and a free Developer Edition. Adobe calls its own SDKs obsolete, the newest dated API change is November 2025, and API plans are sold through sales with no public price.", "bestFor": "A company that already holds Acrobat Sign Solutions and wants an agent to send agreements, track them by webhook and fetch signed files and audit trails.", "strengths": [ "OAuth 2.0 scopes split read, write and send per resource, each limited to the authorising user, a group or the whole account", "Throttled calls return 429 with a `Retry-After` header and a `retryAfter` body field, and the guide asks for exponential backoff", "ETags give 304 on unchanged reads and `If-Match` on updates, so a stale write fails with 412 `RESOURCE_MODIFIED`", "Webhooks retry with doubling intervals for up to 72 hours and can call an endpoint secured with OAuth 2.0 or two-way SSL", "A free Developer Edition account includes API access, and a 99.9 per cent uptime SLA with credits covers the enterprise product" ], "weaknesses": [ "Adobe's SDK page says the C#, Java and JavaScript SDKs are obsolete and out of step with REST v6", "The newest dated entry in the API release notes is November 2025, eleven months before this check", "API plans (Acrobat Sign Solutions) are sold through sales. No per-transaction price is published", "Per-endpoint request limits depend on the service plan and aren't published. Only the `/search` and polling limits carry numbers", "No llms.txt, no MCP server and no current OpenAPI file were found. The downloadable Swagger files date from 2018" ], "agentNotes": [ "Call the base URI endpoint first and cache `api_access_point`. Each account lives on one shard such as `api.na1.adobesign.com`, and other hosts answer `INVALID_API_ACCESS_POINT`", "Request only the scopes the task needs, with the `:self` modifier. `:account` lets the token act for every user in the account", "On 429 wait the seconds in `Retry-After` or `retryAfter`. Retrying sooner resets the timer on accounts created after 20 May 2025", "Don't poll. An identical GET repeated past the plan's threshold returns 429. Subscribe to webhooks, or send `If-None-Match` with the ETag", "Create agreements in `DRAFT` state, check them, then move to `IN_PROCESS`. No idempotency key exists, so check before re-sending a failed `POST /agreements`" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 52.6 } ], "editorialScores": { "ergonomics": 55, "maintenance": 10, "payments": 25, "reliability": 66, "schema": 54, "security": 66, "transparency": 59 }, "provenanceScore": 81 }, "connect": { "http": "GET /api/rest/v6/base_uris HTTP/1.1\nHost: api.na1.adobesign.com\nAuthorization: Bearer {accessToken}" }, "letme": { "capability": "https://letme.dev/esign.send", "tool": "https://letme.dev/adobe-acrobat-sign" }, "sameCompany": [ "adobe-firefly", "adobe-pdf-extract", "adobe-photoshop-api", "adobe-commerce" ], "area": "business", "unitPrices": [ { "item": "Developer Edition", "unit": "month", "usd": 0, "note": "free account with API access, test documents labelled, per the developer guide on 2026-10-08" }, { "item": "Acrobat Standard for teams", "unit": "seat-month", "usd": 16.99, "note": "per licence, annual billed monthly, per the pricing page on 2026-10-08. API access not stated" }, { "item": "Acrobat Pro for teams", "unit": "seat-month", "usd": 23.99, "note": "per licence, annual billed monthly, per the pricing page on 2026-10-08. API access not stated" } ], "provenance": { "legalEntity": "Adobe Inc.", "domain": "adobe.com", "domainRegistered": "1986-11-17", "endpointOnVendorDomain": false, "terms": "https://www.adobe.com/legal/terms.html", "privacy": "https://www.adobe.com/privacy/policy.html", "statusPage": "https://status.adobe.com", "changelog": "https://developer.adobe.com/acrobat-sign/docs/overview/releasenotes/acrobatsignreleasenotes", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "The Adobe General Terms of Use (effective 3 October 2025) cover Adobe's services and software and name Adobe Inc. for North America, Adobe Systems Software Ireland Limited elsewhere and Adobe KK for Japan.", "Enterprise customers contract under the Adobe General Terms for enterprise with the Acrobat Sign product terms (PSLT 2023v2, a PDF) and a sales order. The General Terms of Use are the document a developer or online buyer accepts.", "The Adobe Privacy Policy (last updated 24 October 2025) covers Document Cloud apps and services.", "The API answers on shards of adobesign.com, such as api.na1.adobesign.com, a second Adobe domain registered on 22 December 2011 per RDAP. Older examples use echosign.com.", "www.adobe.com/.well-known/security.txt is PGP-signed, expires on 30 July 2027 and names psirt@adobe.com and a bug bounty on Intigriti.", "RDAP for adobe.com gives a registration date of 1986-11-17." ], "score": 81 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/adobe-acrobat-sign.json", "live": { "slug": "adobe-acrobat-sign", "probe": { "target": "https://api.na1.adobesign.com/api/rest/v6", "method": "get", "lastAt": "2026-10-09T10:42:34.338883253Z", "lastOk": true, "lastStatus": 404, "lastMs": 288, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 267, "p95ms24h": 290, "samples24h": 33, "samples30d": 33, "days": [ { "date": "2026-10-09", "probes": 33, "ok": 33 } ] }, "vendorStatus": { "page": "https://status.adobe.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-09T07:57:34.442944052Z" }, "updatedAt": "2026-10-09T10:42:34.338883253Z" } }, "answer": "airSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories.", "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": 201, "ranked": true, "rankOf": 842, "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": "2026-10-09T10:42:56.512173005Z", "lastOk": true, "lastStatus": 404, "lastMs": 228, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 236, "p95ms24h": 435, "samples24h": 207, "samples30d": 207, "days": [ { "date": "2026-10-08", "probes": 93, "ok": 93 }, { "date": "2026-10-09", "probes": 114, "ok": 114 } ] }, "vendorStatus": { "page": "https://status.signnow.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-09T10:42:03.542786076Z" }, "versions": [ { "registry": "github", "name": "signnow/sn-mcp-server", "version": "v3.1.0", "released": "2026-07-27", "seenAt": "2026-10-08T16:29:25.573934814Z" }, { "registry": "mcp-registry", "name": "io.github.signnow/sn-mcp-server", "version": "0.3.1", "seenAt": "2026-10-09T02:57:46.004536428Z" }, { "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": "2026-10-09T10:42:56.512173005Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Adobe Inc.", "b": "airSlate, Inc.", "name": "Vendor" }, { "a": "https://api.na1.adobesign.com/api/rest/v6", "b": "https://api.signnow.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "OAuth", "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 Adobe General Terms of Use and, for enterprise customers, the Acrobat Sign product terms. The documentation and SDK repository on GitHub is 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": "no", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "io.github.signnow/sn-mcp-server", "name": "MCP registry" }, { "a": "2025-11-01", "b": "2026-09-03", "name": "Last release" }, { "a": "couldn't be read", "b": "2023-03-02", "name": "Terms last updated" }, { "a": "2025-10-24", "b": "2026-08-12", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "26 stars", "b": "8 stars, 7.7k npm/wk, 5.3k PyPI/wk", "name": "Popularity" } ], "faq": [ { "answer": "airSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Adobe Acrobat Sign or airSlate SignNow?" }, { "answer": "Adobe Acrobat Sign uses an OAuth sign-in. airSlate SignNow takes an API key or an OAuth sign-in.", "question": "Do Adobe Acrobat Sign and airSlate SignNow need an API key?" }, { "answer": "Yes. Adobe Acrobat Sign has a hosted endpoint at https://api.na1.adobesign.com/api/rest/v6 and airSlate SignNow at https://api.signnow.com.", "question": "Can an agent call Adobe Acrobat Sign and airSlate SignNow without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "A company that already holds Acrobat Sign Solutions and wants an agent to send agreements, track them by webhook and fetch signed files and audit trails.", "slug": "adobe-acrobat-sign", "watchFor": "Adobe's SDK page says the C#, Java and JavaScript SDKs are obsolete and out of step with REST v6" }, { "aheadOn": [ "Reliability, 93 against 66", "Schema \u0026 documentation, 81 against 54", "Agent ergonomics, 66 against 55", "Payments \u0026 pricing, 35 against 25", "Maintenance \u0026 community, 72 against 10" ], "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/adobe-acrobat-sign-vs-documenso.json", "title": "Adobe Acrobat Sign vs Documenso", "url": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-documenso" }, { "json": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-docusign.json", "title": "Adobe Acrobat Sign vs Docusign", "url": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-docusign" }, { "json": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-dropbox-sign.json", "title": "Adobe Acrobat Sign vs Dropbox Sign", "url": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-dropbox-sign" }, { "json": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-pandadoc.json", "title": "Adobe Acrobat Sign vs PandaDoc", "url": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-pandadoc" }, { "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-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-signnow.json", "title": "Dropbox Sign vs airSlate SignNow", "url": "https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow" }, { "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": [ { "adobe-acrobat-sign": 66, "by": 27, "edge": "signnow", "key": "reliability", "name": "Reliability", "signnow": 93, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "adobe-acrobat-sign": 54, "by": 27, "edge": "signnow", "key": "schema", "name": "Schema \u0026 documentation", "signnow": 81, "weight": 13 }, { "adobe-acrobat-sign": 55, "by": 11, "edge": "signnow", "key": "ergonomics", "name": "Agent ergonomics", "signnow": 66, "weight": 13 }, { "adobe-acrobat-sign": 66, "by": 4, "edge": "adobe-acrobat-sign", "key": "security", "name": "Security \u0026 auth", "signnow": 62, "weight": 14 }, { "adobe-acrobat-sign": 25, "by": 10, "edge": "signnow", "key": "payments", "name": "Payments \u0026 pricing", "signnow": 35, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "adobe-acrobat-sign": 10, "by": 62, "edge": "signnow", "key": "maintenance", "name": "Maintenance \u0026 community", "signnow": 72, "weight": 7 }, { "adobe-acrobat-sign": 70, "by": 4, "edge": "signnow", "key": "transparency", "name": "Transparency \u0026 trust", "signnow": 74, "weight": 7 } ], "summary": "airSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories. Both do esign send.", "verdicts": { "adobe-acrobat-sign": "The REST API has OAuth 2.0 scopes that can be limited to one user, a group or the account, `Retry-After` on throttled calls and a free Developer Edition. Adobe calls its own SDKs obsolete, the newest dated API change is November 2025, and API plans are sold through sales with no public price.", "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/adobe-acrobat-sign-vs-signnow", "json": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow.md", "slim": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow.min.md" }, "markdown": "airSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories. Both do esign send.\n\n- Adobe Acrobat Sign: grade D, 52.6/100, rank #652 of 842. Markdown https://www.anchorterminal.com/tools/adobe-acrobat-sign.md · JSON https://www.anchorterminal.com/api/v1/tools/adobe-acrobat-sign.json\n- airSlate SignNow: grade B, 68.5/100, rank #201 of 842. 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### Adobe Acrobat Sign (D)\n\nGood for: A company that already holds Acrobat Sign Solutions and wants an agent to send agreements, track them by webhook and fetch signed files and audit trails.\n\nWatch for: Adobe's SDK page says the C#, Java and JavaScript SDKs are obsolete and out of step with REST v6\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 66\n- Schema \u0026 documentation, 81 against 54\n- Agent ergonomics, 66 against 55\n- Payments \u0026 pricing, 35 against 25\n- Maintenance \u0026 community, 72 against 10\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 | Adobe Acrobat Sign | airSlate SignNow | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 66 | 93 | airSlate SignNow +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 54 | 81 | airSlate SignNow +27 |\n| Agent ergonomics | 13% (16.2 this run) | 55 | 66 | airSlate SignNow +11 |\n| Security \u0026 auth | 14% (17.5 this run) | 66 | 62 | Adobe Acrobat Sign +4 |\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) | 10 | 72 | airSlate SignNow +62 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 74 | airSlate SignNow +4 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **52.6 · D** | **68.5 · B** | |\n\n## Facts side by side\n\n| Fact | Adobe Acrobat Sign | airSlate SignNow |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Adobe Inc. | airSlate, Inc. |\n| Hosted endpoint | `https://api.na1.adobesign.com/api/rest/v6` | `https://api.signnow.com` |\n| Transports | HTTP | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth | OAuth or key |\n| Pricing | Paid | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under the Adobe General Terms of Use and, for enterprise customers, the Acrobat Sign product terms. The documentation and SDK repository on GitHub is 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 | no | yes |\n| MCP registry | not listed | `io.github.signnow/sn-mcp-server` |\n| Last release | 2025-11-01 | 2026-09-03 |\n| Terms last updated | couldn't be read | 2023-03-02 |\n| Privacy policy last updated | 2025-10-24 | 2026-08-12 |\n| Customer content may train models | couldn't be read | not found in the text |\n| Terms restrict automated access | couldn't be read | yes |\n| Terms restrict benchmarking | couldn't be read | yes |\n| Terms or service can change without notice | couldn't be read | not found in the text |\n| Arbitration or class-action waiver | couldn't be read | yes |\n| Popularity | 26 stars | 8 stars, 7.7k npm/wk, 5.3k PyPI/wk |\n\n## Verdicts\n\n**Adobe Acrobat Sign.** The REST API has OAuth 2.0 scopes that can be limited to one user, a group or the account, `Retry-After` on throttled calls and a free Developer Edition. Adobe calls its own SDKs obsolete, the newest dated API change is November 2025, and API plans are sold through sales with no public price.\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### Adobe Acrobat Sign\n\n1. Call the base URI endpoint first and cache `api_access_point`. Each account lives on one shard such as `api.na1.adobesign.com`, and other hosts answer `INVALID_API_ACCESS_POINT`\n2. Request only the scopes the task needs, with the `:self` modifier. `:account` lets the token act for every user in the account\n3. On 429 wait the seconds in `Retry-After` or `retryAfter`. Retrying sooner resets the timer on accounts created after 20 May 2025\n4. Don't poll. An identical GET repeated past the plan's threshold returns 429. Subscribe to webhooks, or send `If-None-Match` with the ETag\n5. Create agreements in `DRAFT` state, check them, then move to `IN_PROCESS`. No idempotency key exists, so check before re-sending a failed `POST /agreements`\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, Adobe Acrobat Sign or airSlate SignNow?\n\nairSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories.\n\n### Do Adobe Acrobat Sign and airSlate SignNow need an API key?\n\nAdobe Acrobat Sign uses an OAuth sign-in. airSlate SignNow takes an API key or an OAuth sign-in.\n\n### Can an agent call Adobe Acrobat Sign and airSlate SignNow without installing anything?\n\nYes. Adobe Acrobat Sign has a hosted endpoint at https://api.na1.adobesign.com/api/rest/v6 and airSlate SignNow at https://api.signnow.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow.json, and with the fewest tokens: https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"adobe-acrobat-sign\", \"b\": \"signnow\"}`. From a terminal: `anchor compare adobe-acrobat-sign signnow`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/adobe-acrobat-sign.json and https://www.anchorterminal.com/api/v1/tools/signnow.json\n\n## Other comparisons with Adobe Acrobat Sign or airSlate SignNow\n\n- [Adobe Acrobat Sign vs Documenso](https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-documenso.md)\n- [Adobe Acrobat Sign vs Docusign](https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-docusign.md)\n- [Adobe Acrobat Sign vs Dropbox Sign](https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-dropbox-sign.md)\n- [Adobe Acrobat Sign vs PandaDoc](https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-pandadoc.md)\n- [Documenso vs airSlate SignNow](https://www.anchorterminal.com/compare/documenso-vs-signnow.md)\n- [Docusign vs airSlate SignNow](https://www.anchorterminal.com/compare/docusign-vs-signnow.md)\n- [Dropbox Sign vs airSlate SignNow](https://www.anchorterminal.com/compare/dropbox-sign-vs-signnow.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": "2026-10-09", "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": "Adobe Acrobat Sign vs airSlate SignNow", "url": "" } ], "description": "airSlate SignNow scores 68.5 (B) on agent readiness against Adobe Acrobat Sign's 52.6 (D), and leads in 6 of 7 scored categories. Both do esign send. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Adobe Acrobat Sign D 52.6", "airSlate SignNow B 68.5", "scores" ], "h1": "Adobe Acrobat Sign vs airSlate SignNow", "image": "https://www.anchorterminal.com/assets/og/compare-adobe-acrobat-sign-vs-signnow.png", "path": "/compare/adobe-acrobat-sign-vs-signnow", "published": "2026-10-01", "section": "tools", "title": "Adobe Acrobat Sign vs airSlate SignNow for AI agents, D 52.6 vs B 68.5", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/adobe-acrobat-sign-vs-signnow" }, "tokens": { "markdown": 2200, "slim": 780 }, "version": 1 }