{
  "data": {
    "a": {
      "slug": "amazon-sns",
      "name": "Amazon SNS",
      "vendor": "Amazon Web Services",
      "vendorUrl": "https://aws.amazon.com/sns/",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Amazon SNS is AWS's publish and subscribe messaging service. A message published to a topic, or directly to a device or phone number, goes out as mobile push, SMS, plain-text email, HTTPS calls or to SQS queues and Lambda functions.",
      "url": "https://www.anchorterminal.com/tools/amazon-sns",
      "markdownUrl": "https://www.anchorterminal.com/tools/amazon-sns.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/amazon-sns.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/amazon-sns.json",
      "repo": "https://github.com/aws/api-models-aws",
      "license": "Proprietary service under the AWS Customer Agreement. The AWS SDKs and the AWS Labs MCP server are Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://sns.us-east-1.amazonaws.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@aws-sdk/client-sns"
        },
        {
          "registry": "pypi",
          "name": "boto3"
        },
        {
          "registry": "pypi",
          "name": "awslabs.amazon-sns-sqs-mcp-server"
        }
      ],
      "auth": "mixed",
      "authNotes": "Requests are signed with AWS Signature Version 4 using IAM credentials, long-lived access keys or temporary credentials from AWS STS. IAM identity policies and topic resource policies use the `sns` action prefix with topic ARNs and condition keys. Access is self-serve with an AWS account. SMS starts in a sandbox per account, and leaving it or raising the $1 monthly spend quota needs an AWS Support case. Mobile push needs a platform application holding credentials from Apple, Google or another push service.",
      "pricing": "usage",
      "pricingNotes": "Pay per request and per notification with no minimum. On standard topics in US East (N. Virginia), API requests cost $0.50 per million after 1,000,000 free each month, mobile push $0.50 per million after 1,000,000 free, email $2.00 per 100,000 after 1,000 free, and HTTP deliveries $0.60 per million after 100,000 free. Deliveries to SQS and Lambda are free. SMS is billed by AWS End User Messaging. New AWS customers get up to $200 in Free Tier credits, and AWS says most can sign up without a payment method (https://aws.amazon.com/sns/pricing/, https://aws.amazon.com/free/free-tier-faqs/).",
      "priceSummary": "$0.0005 / 1k req",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the developer guide index, the API model or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 6505984,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.aws.amazon.com/sns/latest/dg/welcome.html",
      "llmsTxt": "https://docs.aws.amazon.com/sns/latest/dg/llms.txt",
      "capabilities": [
        "notify.push",
        "notify.multichannel",
        "messaging.sms"
      ],
      "tags": [
        "hosted",
        "llms-txt",
        "typescript",
        "python",
        "push",
        "sms",
        "mcp",
        "enterprise"
      ],
      "lastRelease": "2026-10-06",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 72.8,
        "grade": "BB",
        "agentReady": true,
        "rank": 86,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 1,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 65,
          "maintenance": 75,
          "payments": 35,
          "reliability": 75,
          "schema": 83,
          "security": 89,
          "transparency": 83
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "IAM and topic policies limit a credential to single actions and topics, a read-only managed policy exists, and CloudTrail can log each publish. Standard topics take no idempotency token, so a retried `Publish` can send twice. SNS has no user preferences, digests or in-app channel, email is plain text to confirmed subscribers, and SMS starts in a sandbox.",
        "bestFor": "Teams already on AWS that want cheap push, SMS and plain-text email alerts or fan-out to queues and functions under IAM and CloudTrail.",
        "strengths": [
          "IAM identity policies and topic resource policies per action and topic, temporary credentials, and an `AmazonSNSReadOnlyAccess` managed policy",
          "Published quotas of 30,000 published messages a second per account in US East (N. Virginia) and 300 in the smallest Regions",
          "First 1,000,000 API requests, 1,000,000 mobile push notifications and 1,000 emails each month are free on standard topics",
          "Smithy model published for all 42 operations, with llms.txt indexes and a Markdown twin of every guide and reference page",
          "99.9 per cent monthly uptime commitment per Region under the Amazon Messaging SLA, last updated 4 May 2022"
        ],
        "weaknesses": [
          "No idempotency token on `Publish` to a standard topic. Only FIFO topics deduplicate, over a five-minute window",
          "No user preferences, digests, templates or in-app channel. Email is plain text and each address has to confirm its subscription",
          "SMS starts in a sandbox with ten verified numbers and a $1 monthly spend quota, raised through an AWS Support case",
          "Topic, subscription and endpoint settings travel as string maps and JSON inside strings, and the model has only four enumerated types",
          "The AWS Health Dashboard lists the service in the UAE and Bahrain Region disruptions open since March 2026"
        ],
        "agentNotes": [
          "Sign requests with SigV4 for service `sns` at `sns.\u003cregion\u003e.amazonaws.com`, or call `aws sns publish --topic-arn \u003carn\u003e --message \u003ctext\u003e` from the AWS CLI",
          "Track `MessageId` yourself on standard topics, because a retried `Publish` sends again. Use a FIFO topic with `MessageDeduplicationId` when duplicates matter",
          "Send per-channel text by setting `MessageStructure` to `json` and passing a JSON string with a `default` key plus keys such as `APNS`, `GCM`, `email` and `sms`",
          "Check `GetSMSSandboxAccountStatus` and the monthly spend quota before texting. Sandbox sends reach only verified numbers",
          "Expect an email subscription to stay in `PendingConfirmation` until the recipient clicks the link, and keep each email subscription under 10 messages a second"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 72.8
          }
        ],
        "editorialScores": {
          "ergonomics": 65,
          "maintenance": 75,
          "payments": 35,
          "reliability": 75,
          "schema": 83,
          "security": 89,
          "transparency": 71
        },
        "provenanceScore": 95
      },
      "connect": {
        "config": {
          "mcpServers": {
            "awslabs.amazon-sns-sqs-mcp-server": {
              "args": [
                "awslabs.amazon-sns-sqs-mcp-server@latest"
              ],
              "command": "uvx",
              "env": {
                "AWS_PROFILE": "your-aws-profile",
                "AWS_REGION": "us-east-1"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/amazon-sns"
      },
      "sameCompany": [
        "aws-end-user-messaging",
        "amazon-s3"
      ],
      "area": "everyday",
      "unitPrices": [
        {
          "item": "API requests, standard topics",
          "unit": "1k-requests",
          "usd": 0.0005,
          "note": "US East (N. Virginia), after 1,000,000 free a month. Each 64 KB of payload counts as one request"
        },
        {
          "item": "Publishes, FIFO topics",
          "unit": "1k-requests",
          "usd": 0.0003,
          "note": "US East (N. Virginia), plus $0.017 per GB of payload and $0.01 per million subscription messages"
        },
        {
          "item": "Mobile push notification",
          "unit": "message",
          "usd": 5e-7,
          "note": "$0.50 per million after 1,000,000 free a month"
        },
        {
          "item": "Email notification",
          "unit": "1k-emails",
          "usd": 0.02,
          "note": "$2.00 per 100,000 after 1,000 free a month"
        },
        {
          "item": "HTTP or HTTPS notification",
          "unit": "message",
          "usd": 6e-7,
          "note": "$0.60 per million after 100,000 free a month"
        }
      ],
      "provenance": {
        "legalEntity": "Amazon Web Services, Inc.",
        "domain": "amazonaws.com",
        "domainRegistered": "2005-08-18",
        "endpointOnVendorDomain": true,
        "terms": "https://aws.amazon.com/agreement/",
        "privacy": "https://aws.amazon.com/privacy/",
        "statusPage": "https://health.aws.amazon.com/health/status",
        "changelog": "https://docs.aws.amazon.com/sns/latest/dg/sns-release-notes.html",
        "securityTxt": "expired",
        "checked": "2026-10-08",
        "notes": [
          "The AWS Customer Agreement (last updated 14 August 2026) governs use of the service, with other AWS entities as contracting party by account country.",
          "Section 11 of the AWS Service Terms (last updated 1 October 2026) adds terms for Amazon SNS. It says AMCS LLC sells parts of the service in Japan and AMCS SG Private Limited in Singapore, and that fees apply even when delivery is blocked for reasons outside AWS's control (https://aws.amazon.com/service-terms/).",
          "The AWS Privacy Notice (last updated 18 May 2026) says it does not apply to content customers process with AWS services, which the agreement governs.",
          "https://aws.amazon.com/.well-known/security.txt carries Expires 2026-09-24T16:25:03Z, so it had expired on 8 October 2026.",
          "RDAP for amazonaws.com gives a registration date of 2005-08-18. The API answers at sns.\u003cregion\u003e.amazonaws.com, while product and legal pages sit on aws.amazon.com."
        ],
        "score": 95
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/amazon-sns.json",
      "live": {
        "slug": "amazon-sns",
        "probe": {
          "target": "https://sns.us-east-1.amazonaws.com",
          "method": "get",
          "lastAt": "2026-10-08T21:12:03.674891671Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 247,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 252,
          "p95ms24h": 316,
          "samples24h": 21,
          "samples30d": 21,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 21,
              "ok": 21
            }
          ]
        },
        "updatedAt": "2026-10-08T21:12:03.674891671Z"
      }
    },
    "answer": "Amazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.",
    "b": {
      "slug": "knock",
      "name": "Knock",
      "vendor": "Knock",
      "vendorUrl": "https://knock.app",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Notification workflow API.",
      "url": "https://www.anchorterminal.com/tools/knock",
      "markdownUrl": "https://www.anchorterminal.com/tools/knock.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/knock.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/knock.json",
      "repo": "https://github.com/knocklabs/knock-node",
      "license": "Apache-2.0 (Node SDK)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.knock.app/v1",
      "packages": [
        {
          "registry": "npm",
          "name": "@knocklabs/node"
        },
        {
          "registry": "pypi",
          "name": "knockapi"
        }
      ],
      "auth": "mixed",
      "authNotes": "Secret API key per environment as a Bearer token for server calls, and a public key plus signed user tokens for client feeds. The hosted MCP signs in with OAuth or takes a service token (`knock_st_...`) as a Bearer credential for headless use.",
      "pricing": "freemium",
      "pricingNotes": "Developer plan free with 10,000 messages a month, 500 guide active users and 500 AI agent credits. Starter $250 a month with 50,000 messages prepaid, then $0.005 a message, 2,500 guide active users ($0.05 each after) and 2,000 agent credits ($0.01 each after). Enterprise is priced by volume or by notified users. A message is one delivery to one user on one channel, and bounced or failed messages aren't billed. No setup fee, billed monthly in arrears (https://knock.app/pricing).",
      "priceSummary": "$250 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 50,
        "npmWeekly": 926382,
        "pypiWeekly": 233669,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://docs.knock.app",
      "llmsTxt": "https://docs.knock.app/llms.txt",
      "openapi": "https://docs.knock.app/openapi.json",
      "capabilities": [
        "notify.push",
        "notify.in-app",
        "notify.multichannel",
        "notify.preferences",
        "notify.digest"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "enterprise"
      ],
      "lastRelease": "2026-09-29",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 66.5,
        "grade": "B",
        "agentReady": false,
        "rank": 234,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 5,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 64,
          "maintenance": 86,
          "payments": 40,
          "reliability": 58,
          "schema": 88,
          "security": 71,
          "transparency": 60
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Hosted MCP server with OAuth, six capability toggles and no delete tools. Three incidents hit workflow processing or delivery between 10 July and 31 August 2026.",
        "bestFor": "A product team that wants a workflow engine with batching, preferences and an in-app feed, and for agents that build and debug workflows through MCP safely.",
        "strengths": [
          "Hosted MCP server with OAuth, six capability toggles and no delete tools",
          "Idempotency keys on trigger for 24 hours, plus cancellation keys for delayed runs",
          "Rate limits published in five tiers from 1 to 1,000 requests a second",
          "Audit logs attribute management API changes to the service token that made them",
          "Free plan with 10,000 messages a month and no card"
        ],
        "weaknesses": [
          "Three incidents hit workflow processing or delivery between 10 July and 31 August 2026",
          "No SLA, Retry-After header or backoff guidance found",
          "Service tokens carry the creator's full privileges with no expiry, and skip MCP consent",
          "Starter jumps from free to $250 a month",
          "Email, SMS and push go through providers you configure and pay for separately"
        ],
        "agentNotes": [
          "Create the workflow in the dashboard or through the MCP server before you trigger it. Triggers reference it by key",
          "Send an `Idempotency-Key` on every trigger. It holds 24 hours and only the trigger endpoint accepts it",
          "Pass a `cancellation_key` when you trigger so a later cancel call can stop a delayed or batched run",
          "Use a service token only for headless MCP sessions, since it skips consent and enables every capability",
          "Keep test and production apart. Rate limits and keys are scoped to an environment"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3.5,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 66.5
          }
        ],
        "editorialScores": {
          "ergonomics": 64,
          "maintenance": 86,
          "payments": 40,
          "reliability": 58,
          "schema": 88,
          "security": 71,
          "transparency": 39
        },
        "provenanceScore": 81
      },
      "connect": {
        "http": "curl -X POST https://api.knock.app/v1/workflows/new-comment/trigger \\\n  -H \"Authorization: Bearer $KNOCK_SECRET_API_KEY\" -H \"Content-Type: application/json\" \\\n  -d '{\"recipients\":[\"user_123\"],\"data\":{\"message\":\"Build finished\"}}'",
        "claudeCode": "claude mcp add --transport http knock https://mcp.knock.app/mcp",
        "config": {
          "mcpServers": {
            "knock": {
              "headers": {
                "Authorization": "Bearer ${KNOCK_SERVICE_TOKEN}"
              },
              "type": "http",
              "url": "https://mcp.knock.app/mcp"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/knock"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Starter",
          "unit": "month",
          "usd": 250,
          "note": "50,000 messages included"
        },
        {
          "item": "Starter overage",
          "unit": "message",
          "usd": 0.005
        },
        {
          "item": "AI agent credit overage",
          "unit": "credit",
          "usd": 0.01
        }
      ],
      "provenance": {
        "legalEntity": "Knock Labs, Inc.",
        "domain": "knock.app",
        "domainRegistered": "2020-08-28",
        "endpointOnVendorDomain": true,
        "terms": "https://knock.app/terms",
        "privacy": "https://knock.app/legal/privacy-policy",
        "statusPage": "https://status.knock.app",
        "changelog": "https://knock.app/changelog",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms are governed by New York law. A separate data processing addendum is published at knock.app/legal/data-processing-addendum.",
          "The status page tracks the in-dashboard agent as its own component."
        ],
        "score": 81
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/knock.json",
      "live": {
        "slug": "knock",
        "probe": {
          "target": "https://api.knock.app/v1",
          "method": "get",
          "lastAt": "2026-10-08T21:12:13.194421383Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 291,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 299,
          "p95ms24h": 344,
          "samples24h": 271,
          "samples30d": 1955,
          "days": [
            {
              "date": "2026-10-01",
              "probes": 109,
              "ok": 109
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 239,
              "ok": 239
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.knock.app",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:06:10.71795691Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "knocklabs/knock-node",
            "version": "v1.36.0",
            "released": "2026-09-30",
            "seenAt": "2026-10-08T16:17:59.410254776Z"
          },
          {
            "registry": "npm",
            "name": "@knocklabs/node",
            "version": "1.36.0",
            "seenAt": "2026-10-08T16:17:55.433846604Z"
          },
          {
            "registry": "pypi",
            "name": "knockapi",
            "version": "1.31.0",
            "released": "2026-09-30",
            "seenAt": "2026-10-08T16:17:59.212196523Z"
          }
        ],
        "githubStars": 50,
        "npmWeekly": 950212,
        "pypiWeekly": 196946,
        "securityTxt": {
          "url": "https://knock.app/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:33.618077645Z"
        },
        "llmsTxt": {
          "url": "https://docs.knock.app/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:33.752054984Z"
        },
        "domain": {
          "domain": "knock.app",
          "registered": "2020-08-28",
          "source": "https://pubapi.registry.google/rdap/domain/knock.app",
          "checkedAt": "2026-10-04T13:04:01.050922733Z"
        },
        "pages": [
          {
            "url": "https://knock.app/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:08.063606233Z",
            "changedAt": "2026-10-07T18:06:43.405248203Z",
            "fingerprint": "c223a15a4932"
          },
          {
            "url": "https://knock.app/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:12.284491595Z",
            "changedAt": "2026-10-07T18:06:47.972051612Z",
            "fingerprint": "88884ef8f29a"
          },
          {
            "url": "https://knock.app/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:10.384869361Z",
            "changedAt": "2026-10-07T18:06:45.716206824Z",
            "fingerprint": "8b88939fcacf"
          },
          {
            "url": "https://knock.app/terms",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-08T18:21:14.116260889Z",
            "changedAt": "2026-10-07T18:06:49.489482879Z",
            "fingerprint": "2855cc420ae7"
          }
        ],
        "updatedAt": "2026-10-08T21:12:13.194421383Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Amazon Web Services",
        "b": "Knock",
        "name": "Vendor"
      },
      {
        "a": "https://sns.us-east-1.amazonaws.com",
        "b": "https://api.knock.app/v1",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "$0. per message",
        "b": "not published",
        "name": "Price for notify push"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the AWS Customer Agreement. The AWS SDKs and the AWS Labs MCP server are Apache-2.0",
        "b": "Apache-2.0 (Node SDK)",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-06",
        "b": "2026-09-29",
        "name": "Last release"
      },
      {
        "a": "2026-08-14",
        "b": "2026-03-04",
        "name": "Terms last updated"
      },
      {
        "a": "2026-05-18",
        "b": "2026-03-04",
        "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": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "6.5M npm/wk",
        "b": "50 stars, 926k npm/wk, 234k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3.5/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Amazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.",
        "question": "Which is better for AI agents, Amazon SNS or Knock?"
      },
      {
        "answer": "Both take an API key or an OAuth sign-in.",
        "question": "Do Amazon SNS and Knock need an API key?"
      },
      {
        "answer": "Yes. Amazon SNS has a hosted endpoint at https://sns.us-east-1.amazonaws.com and Knock at https://api.knock.app/v1.",
        "question": "Can an agent call Amazon SNS and Knock without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 75 against 58",
          "Security \u0026 auth, 89 against 71",
          "Transparency \u0026 trust, 83 against 60"
        ],
        "also": [
          "Agent-ready, a grade of BB or better"
        ],
        "goodFor": "Teams already on AWS that want cheap push, SMS and plain-text email alerts or fan-out to queues and functions under IAM and CloudTrail.",
        "slug": "amazon-sns",
        "watchFor": "No idempotency token on `Publish` to a standard topic. Only FIFO topics deduplicate, over a five-minute window"
      },
      {
        "aheadOn": [
          "Schema \u0026 documentation, 88 against 83",
          "Payments \u0026 pricing, 40 against 35",
          "Maintenance \u0026 community, 86 against 75"
        ],
        "also": null,
        "goodFor": "A product team that wants a workflow engine with batching, preferences and an in-app feed, and for agents that build and debug workflows through MCP safely.",
        "slug": "knock",
        "watchFor": "Three incidents hit workflow processing or delivery between 10 July and 31 August 2026"
      }
    ],
    "job": {
      "capability": "notify.push",
      "name": "Notify push"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier.json",
        "title": "Amazon SNS vs Courier",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-novu.json",
        "title": "Amazon SNS vs Novu",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-novu"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-ntfy.json",
        "title": "Amazon SNS vs ntfy",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-ntfy"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-onesignal.json",
        "title": "Amazon SNS vs OneSignal",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-onesignal"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-pushover.json",
        "title": "Amazon SNS vs Pushover",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-pushover"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-suprsend.json",
        "title": "Amazon SNS vs SuprSend",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-suprsend"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-knock.json",
        "title": "Courier vs Knock",
        "url": "https://www.anchorterminal.com/compare/courier-vs-knock"
      },
      {
        "json": "https://www.anchorterminal.com/compare/knock-vs-novu.json",
        "title": "Knock vs Novu",
        "url": "https://www.anchorterminal.com/compare/knock-vs-novu"
      },
      {
        "json": "https://www.anchorterminal.com/compare/knock-vs-ntfy.json",
        "title": "Knock vs ntfy",
        "url": "https://www.anchorterminal.com/compare/knock-vs-ntfy"
      },
      {
        "json": "https://www.anchorterminal.com/compare/knock-vs-onesignal.json",
        "title": "Knock vs OneSignal",
        "url": "https://www.anchorterminal.com/compare/knock-vs-onesignal"
      },
      {
        "json": "https://www.anchorterminal.com/compare/knock-vs-pushover.json",
        "title": "Knock vs Pushover",
        "url": "https://www.anchorterminal.com/compare/knock-vs-pushover"
      },
      {
        "json": "https://www.anchorterminal.com/compare/knock-vs-suprsend.json",
        "title": "Knock vs SuprSend",
        "url": "https://www.anchorterminal.com/compare/knock-vs-suprsend"
      }
    ],
    "scores": [
      {
        "amazon-sns": 75,
        "by": 17,
        "edge": "amazon-sns",
        "key": "reliability",
        "knock": 58,
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "amazon-sns": 83,
        "by": 5,
        "edge": "knock",
        "key": "schema",
        "knock": 88,
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "amazon-sns": 65,
        "by": 1,
        "edge": "amazon-sns",
        "key": "ergonomics",
        "knock": 64,
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "amazon-sns": 89,
        "by": 18,
        "edge": "amazon-sns",
        "key": "security",
        "knock": 71,
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "amazon-sns": 35,
        "by": 5,
        "edge": "knock",
        "key": "payments",
        "knock": 40,
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "amazon-sns": 75,
        "by": 11,
        "edge": "knock",
        "key": "maintenance",
        "knock": 86,
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "amazon-sns": 83,
        "by": 23,
        "edge": "amazon-sns",
        "key": "transparency",
        "knock": 60,
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Amazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do notify push.",
    "verdicts": {
      "amazon-sns": "IAM and topic policies limit a credential to single actions and topics, a read-only managed policy exists, and CloudTrail can log each publish. Standard topics take no idempotency token, so a retried `Publish` can send twice. SNS has no user preferences, digests or in-app channel, email is plain text to confirmed subscribers, and SMS starts in a sandbox.",
      "knock": "Hosted MCP server with OAuth, six capability toggles and no delete tools. Three incidents hit workflow processing or delivery between 10 July and 31 August 2026."
    }
  },
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  "links": {
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  "markdown": "Amazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do notify push.\n\n- Amazon SNS: grade BB, 72.8/100, rank #86 of 722. Markdown https://www.anchorterminal.com/tools/amazon-sns.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-sns.json\n- Knock: grade B, 66.5/100, rank #234 of 722. Markdown https://www.anchorterminal.com/tools/knock.md · JSON https://www.anchorterminal.com/api/v1/tools/knock.json\n\n## Which one, for what\n\n### Amazon SNS (BB)\n\nGood for: Teams already on AWS that want cheap push, SMS and plain-text email alerts or fan-out to queues and functions under IAM and CloudTrail.\n\nAhead on:\n- Reliability, 75 against 58\n- Security \u0026 auth, 89 against 71\n- Transparency \u0026 trust, 83 against 60\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: No idempotency token on `Publish` to a standard topic. Only FIFO topics deduplicate, over a five-minute window\n\n### Knock (B)\n\nGood for: A product team that wants a workflow engine with batching, preferences and an in-app feed, and for agents that build and debug workflows through MCP safely.\n\nAhead on:\n- Schema \u0026 documentation, 88 against 83\n- Payments \u0026 pricing, 40 against 35\n- Maintenance \u0026 community, 86 against 75\n\nWatch for: Three incidents hit workflow processing or delivery between 10 July and 31 August 2026\n\n\n## Score by category\n\n| Category | Weight | Amazon SNS | Knock | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 58 | Amazon SNS +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 88 | Knock +5 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 64 | Amazon SNS +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 89 | 71 | Amazon SNS +18 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | Knock +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 75 | 86 | Knock +11 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 60 | Amazon SNS +23 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **72.8 · BB** | **66.5 · B** | |\n\n## Facts side by side\n\n| Fact | Amazon SNS | Knock |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Amazon Web Services | Knock |\n| Hosted endpoint | `https://sns.us-east-1.amazonaws.com` | `https://api.knock.app/v1` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Pay per use | Freemium |\n| Price for notify push | $0. per message | not published |\n| x402 | no | no |\n| Licence | Proprietary service under the AWS Customer Agreement. The AWS SDKs and the AWS Labs MCP server are Apache-2.0 | Apache-2.0 (Node SDK) |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-06 | 2026-09-29 |\n| Terms last updated | 2026-08-14 | 2026-03-04 |\n| Privacy policy last updated | 2026-05-18 | 2026-03-04 |\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 | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 6.5M npm/wk | 50 stars, 926k npm/wk, 234k PyPI/wk |\n| Agent reviews | none | 3.5/5 (2) |\n\n## Verdicts\n\n**Amazon SNS.** IAM and topic policies limit a credential to single actions and topics, a read-only managed policy exists, and CloudTrail can log each publish. Standard topics take no idempotency token, so a retried `Publish` can send twice. SNS has no user preferences, digests or in-app channel, email is plain text to confirmed subscribers, and SMS starts in a sandbox.\n\n**Knock.** Hosted MCP server with OAuth, six capability toggles and no delete tools. Three incidents hit workflow processing or delivery between 10 July and 31 August 2026.\n\n## Before you call either\n\n### Amazon SNS\n\n1. Sign requests with SigV4 for service `sns` at `sns.\u003cregion\u003e.amazonaws.com`, or call `aws sns publish --topic-arn \u003carn\u003e --message \u003ctext\u003e` from the AWS CLI\n2. Track `MessageId` yourself on standard topics, because a retried `Publish` sends again. Use a FIFO topic with `MessageDeduplicationId` when duplicates matter\n3. Send per-channel text by setting `MessageStructure` to `json` and passing a JSON string with a `default` key plus keys such as `APNS`, `GCM`, `email` and `sms`\n4. Check `GetSMSSandboxAccountStatus` and the monthly spend quota before texting. Sandbox sends reach only verified numbers\n5. Expect an email subscription to stay in `PendingConfirmation` until the recipient clicks the link, and keep each email subscription under 10 messages a second\n\n### Knock\n\n1. Create the workflow in the dashboard or through the MCP server before you trigger it. Triggers reference it by key\n2. Send an `Idempotency-Key` on every trigger. It holds 24 hours and only the trigger endpoint accepts it\n3. Pass a `cancellation_key` when you trigger so a later cancel call can stop a delayed or batched run\n4. Use a service token only for headless MCP sessions, since it skips consent and enables every capability\n5. Keep test and production apart. Rate limits and keys are scoped to an environment\n\n## Questions\n\n### Which is better for AI agents, Amazon SNS or Knock?\n\nAmazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Amazon SNS and Knock need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Amazon SNS and Knock without installing anything?\n\nYes. Amazon SNS has a hosted endpoint at https://sns.us-east-1.amazonaws.com and Knock at https://api.knock.app/v1.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/amazon-sns-vs-knock.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amazon-sns-vs-knock.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"amazon-sns\", \"b\": \"knock\"}`. From a terminal: `anchor compare amazon-sns knock`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amazon-sns.json and https://www.anchorterminal.com/api/v1/tools/knock.json\n\n## Other comparisons with Amazon SNS or Knock\n\n- [Amazon SNS vs Courier](https://www.anchorterminal.com/compare/amazon-sns-vs-courier.md)\n- [Amazon SNS vs Novu](https://www.anchorterminal.com/compare/amazon-sns-vs-novu.md)\n- [Amazon SNS vs ntfy](https://www.anchorterminal.com/compare/amazon-sns-vs-ntfy.md)\n- [Amazon SNS vs OneSignal](https://www.anchorterminal.com/compare/amazon-sns-vs-onesignal.md)\n- [Amazon SNS vs Pushover](https://www.anchorterminal.com/compare/amazon-sns-vs-pushover.md)\n- [Amazon SNS vs SuprSend](https://www.anchorterminal.com/compare/amazon-sns-vs-suprsend.md)\n- [Courier vs Knock](https://www.anchorterminal.com/compare/courier-vs-knock.md)\n- [Knock vs Novu](https://www.anchorterminal.com/compare/knock-vs-novu.md)\n- [Knock vs ntfy](https://www.anchorterminal.com/compare/knock-vs-ntfy.md)\n- [Knock vs OneSignal](https://www.anchorterminal.com/compare/knock-vs-onesignal.md)\n- [Knock vs Pushover](https://www.anchorterminal.com/compare/knock-vs-pushover.md)\n- [Knock vs SuprSend](https://www.anchorterminal.com/compare/knock-vs-suprsend.md)\n",
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    "description": "Amazon SNS scores 72.8 (BB) on agent readiness against Knock's 66.5 (B), and leads in 4 of 7 scored categories. Knock leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do notify push. Category scores, facts, verdicts and agent notes side by…",
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    "title": "Amazon SNS vs Knock for AI agents, BB 72.8 vs B 66.5 | Anchor Terminal",
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