{
  "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 Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability and maintenance \u0026 community.",
    "b": {
      "slug": "courier",
      "name": "Courier",
      "vendor": "Courier",
      "vendorUrl": "https://www.courier.com",
      "kind": "http-api",
      "category": "notifications",
      "summary": "Notification API that routes one message to email, SMS, push, an in-app Inbox, Slack, Microsoft Teams and WhatsApp through your own providers, with templates, digests, preferences and journeys.",
      "url": "https://www.anchorterminal.com/tools/courier",
      "markdownUrl": "https://www.anchorterminal.com/tools/courier.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/courier.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/courier.json",
      "repo": "https://github.com/trycourier/courier-node",
      "license": "Apache-2.0 (Node SDK)",
      "transports": [
        "http",
        "streamable-http"
      ],
      "remoteUrl": "https://api.courier.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@trycourier/courier"
        },
        {
          "registry": "pypi",
          "name": "trycourier"
        }
      ],
      "auth": "api-key",
      "authNotes": "Workspace API key as `Authorization: Bearer \u003ckey\u003e` on the REST API. The hosted MCP at mcp.courier.com takes the key in an `api_key` header, with no OAuth. A JWT endpoint issues tokens for client SDKs such as the Inbox.",
      "pricing": "freemium",
      "pricingNotes": "Developer plan free for up to 10,000 sends a month. Business is pay as you go at $0.005 a send. Enterprise is custom with volume discounts. Billing counts notifications sent, not seats or channels (https://www.courier.com/docs/overview.md). Support is email on Developer, adds chat on Business, and Enterprise adds a shared Slack channel and an SLA (https://www.courier.com/docs/resources/help.md).",
      "priceSummary": "Freemium",
      "where": "hosted",
      "x402": {
        "level": "no",
        "endpoints": []
      },
      "toolCount": 170,
      "popularity": {
        "githubStars": 63,
        "npmWeekly": 189029,
        "pypiWeekly": 35385,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://www.courier.com/docs",
      "llmsTxt": "https://www.courier.com/docs/llms.txt",
      "openapi": "https://www.courier.com/docs/openapi-specs/openapi.documented.yml",
      "registryName": "io.github.trycourier/courier",
      "capabilities": [
        "notify.push",
        "notify.in-app",
        "notify.multichannel",
        "notify.preferences",
        "notify.digest"
      ],
      "tags": [
        "hosted",
        "freemium",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "enterprise"
      ],
      "lastRelease": "2026-09-24",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 70.5,
        "grade": "BB",
        "agentReady": true,
        "rank": 133,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 68,
          "maintenance": 86,
          "payments": 35,
          "reliability": 92,
          "schema": 84,
          "security": 56,
          "transparency": 65
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode.",
        "bestFor": "A product team that wants simple per-send billing and one API across many providers, and for agents that only send.",
        "strengths": [
          "Free for 10,000 sends a month, then $0.005 a send with no platform fee",
          "`POST /send` has no request-count rate limit, and the limited endpoints publish their numbers",
          "Idempotency keys replay for 25 hours by default and up to a year",
          "Public OpenAPI file, llms.txt with about 230 Markdown pages, and an agent skill",
          "Status page with no incidents posted since 18 June 2026"
        ],
        "weaknesses": [
          "170 MCP tools with no toolsets, filtering or read-only mode",
          "MCP authentication is a raw API key header with no OAuth or scopes",
          "Error responses documented only as `message` and `type`, with no list of codes",
          "Audit trail of key and template changes is Enterprise only",
          "No subprocessor list, data regions or retention periods in the privacy policy"
        ],
        "agentNotes": [
          "Send an `Idempotency-Key` header on every send so a retry doesn't notify twice",
          "Set `routing.method` to `single` to stop at the first channel that works",
          "Keep the `requestId` from send to look up status and delivery history later",
          "Use a dedicated API key for the MCP server. Every one of the 170 tools runs with that key's full rights",
          "Space resends at least 2 seconds apart per message or you get a 429"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "BB",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 70.5
          }
        ],
        "editorialScores": {
          "ergonomics": 68,
          "maintenance": 86,
          "payments": 35,
          "reliability": 92,
          "schema": 84,
          "security": 56,
          "transparency": 40
        },
        "provenanceScore": 89
      },
      "connect": {
        "http": "curl -X POST https://api.courier.com/send \\\n  -H \"Authorization: Bearer $COURIER_API_KEY\" -H \"Content-Type: application/json\" \\\n  -H \"Idempotency-Key: build-42\" \\\n  -d '{\"message\":{\"to\":{\"user_id\":\"user_123\"},\"content\":{\"title\":\"Build finished\",\"body\":\"All tests passed\"},\"routing\":{\"method\":\"single\",\"channels\":[\"push\",\"email\"]}}}'",
        "claudeCode": "claude mcp add --transport http courier https://mcp.courier.com --header \"api_key: $COURIER_API_KEY\"",
        "config": {
          "mcpServers": {
            "courier": {
              "headers": {
                "api_key": "${COURIER_API_KEY}"
              },
              "type": "http",
              "url": "https://mcp.courier.com"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/notify.push",
        "tool": "https://letme.dev/courier"
      },
      "area": "everyday",
      "unitPrices": [
        {
          "item": "Business send",
          "unit": "message",
          "usd": 0.005,
          "note": "Pay as you go after 10,000 free sends"
        }
      ],
      "provenance": {
        "legalEntity": "trycourier.com, Inc.",
        "domain": "courier.com",
        "domainRegistered": "1993-09-09",
        "domainNote": "courier.com was registered in 1993, long before Courier launched, so the domain was bought later.",
        "endpointOnVendorDomain": true,
        "terms": "https://www.courier.com/terms",
        "privacy": "https://www.courier.com/privacy-policy",
        "statusPage": "https://status.courier.com",
        "changelog": "https://www.courier.com/changelog/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Terms are governed by California law and give 143 2nd St, San Francisco, as the address.",
          "Certifications and data handling are published separately at security.courier.com."
        ],
        "score": 89
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/courier.json",
      "live": {
        "slug": "courier",
        "probe": {
          "target": "https://api.courier.com",
          "method": "get",
          "lastAt": "2026-10-08T21:12:08.125711866Z",
          "lastOk": true,
          "lastStatus": 403,
          "lastMs": 122,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 139,
          "p95ms24h": 409,
          "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.courier.com",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-08T21:05:58.457448208Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "trycourier/courier-node",
            "version": "v9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-08T16:07:13.299509915Z"
          },
          {
            "registry": "mcp-registry",
            "name": "io.github.trycourier/courier",
            "version": "1.3.7",
            "seenAt": "2026-10-08T02:42:52.272076636Z"
          },
          {
            "registry": "npm",
            "name": "@trycourier/courier",
            "version": "9.11.0",
            "seenAt": "2026-10-08T16:07:09.615433373Z"
          },
          {
            "registry": "pypi",
            "name": "trycourier",
            "version": "9.11.0",
            "released": "2026-09-24",
            "seenAt": "2026-10-08T16:07:13.115588719Z"
          }
        ],
        "githubStars": 63,
        "npmWeekly": 220043,
        "pypiWeekly": 44461,
        "securityTxt": {
          "url": "https://courier.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:56.662125009Z"
        },
        "llmsTxt": {
          "url": "https://www.courier.com/docs/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:16.705084417Z"
        },
        "domain": {
          "domain": "courier.com",
          "registered": "1993-09-09",
          "source": "https://rdap.verisign.com/com/v1/domain/courier.com",
          "checkedAt": "2026-10-04T13:09:59.714592295Z"
        },
        "pages": [
          {
            "url": "https://www.courier.com/changelog/",
            "kind": "changelog",
            "status": 304,
            "checkedAt": "2026-10-08T18:27:15.121337565Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "cda43798db5a"
          },
          {
            "url": "https://www.courier.com/privacy-policy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-08T18:27:17.54134974Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e9b84df4985f"
          },
          {
            "url": "https://www.courier.com/terms",
            "kind": "terms",
            "status": 304,
            "checkedAt": "2026-10-08T18:27:19.675065413Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "15732fe78cb9"
          }
        ],
        "updatedAt": "2026-10-08T21:12:08.125711866Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Amazon Web Services",
        "b": "Courier",
        "name": "Vendor"
      },
      {
        "a": "https://sns.us-east-1.amazonaws.com",
        "b": "https://api.courier.com",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "API 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": "none",
        "b": "170",
        "name": "Tools exposed"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "not listed",
        "b": "io.github.trycourier/courier",
        "name": "MCP registry"
      },
      {
        "a": "2026-10-06",
        "b": "2026-09-24",
        "name": "Last release"
      },
      {
        "a": "2026-08-14",
        "b": "2026-09-10",
        "name": "Terms last updated"
      },
      {
        "a": "2026-05-18",
        "b": "2025-12-08",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "6.5M npm/wk",
        "b": "63 stars, 189k npm/wk, 35k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "none",
        "b": "3/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Amazon SNS scores 72.8 (BB) on agent readiness against Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability and maintenance \u0026 community.",
        "question": "Which is better for AI agents, Amazon SNS or Courier?"
      },
      {
        "answer": "Amazon SNS takes an API key or an OAuth sign-in. Courier needs an API key.",
        "question": "Do Amazon SNS and Courier need an API key?"
      },
      {
        "answer": "Yes. Amazon SNS has a hosted endpoint at https://sns.us-east-1.amazonaws.com and Courier at https://api.courier.com.",
        "question": "Can an agent call Amazon SNS and Courier without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Security \u0026 auth, 89 against 56",
          "Transparency \u0026 trust, 83 against 65"
        ],
        "also": null,
        "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": [
          "Reliability, 92 against 75",
          "Maintenance \u0026 community, 86 against 75"
        ],
        "also": null,
        "goodFor": "A product team that wants simple per-send billing and one API across many providers, and for agents that only send.",
        "slug": "courier",
        "watchFor": "170 MCP tools with no toolsets, filtering or read-only mode"
      }
    ],
    "job": {
      "capability": "notify.push",
      "name": "Notify push"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-knock.json",
        "title": "Amazon SNS vs Knock",
        "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-knock"
      },
      {
        "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/courier-vs-novu.json",
        "title": "Courier vs Novu",
        "url": "https://www.anchorterminal.com/compare/courier-vs-novu"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-ntfy.json",
        "title": "Courier vs ntfy",
        "url": "https://www.anchorterminal.com/compare/courier-vs-ntfy"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-onesignal.json",
        "title": "Courier vs OneSignal",
        "url": "https://www.anchorterminal.com/compare/courier-vs-onesignal"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-pushover.json",
        "title": "Courier vs Pushover",
        "url": "https://www.anchorterminal.com/compare/courier-vs-pushover"
      },
      {
        "json": "https://www.anchorterminal.com/compare/courier-vs-suprsend.json",
        "title": "Courier vs SuprSend",
        "url": "https://www.anchorterminal.com/compare/courier-vs-suprsend"
      }
    ],
    "scores": [
      {
        "amazon-sns": 75,
        "by": 17,
        "courier": 92,
        "edge": "courier",
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "amazon-sns": 83,
        "by": 1,
        "courier": 84,
        "edge": "courier",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "amazon-sns": 65,
        "by": 3,
        "courier": 68,
        "edge": "courier",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "amazon-sns": 89,
        "by": 33,
        "courier": 56,
        "edge": "amazon-sns",
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "amazon-sns": 35,
        "by": 0,
        "courier": 35,
        "edge": "",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "amazon-sns": 75,
        "by": 11,
        "courier": 86,
        "edge": "courier",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "amazon-sns": 83,
        "by": 18,
        "courier": 65,
        "edge": "amazon-sns",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Amazon SNS scores 72.8 (BB) on agent readiness against Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability 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.",
      "courier": "Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier",
    "json": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier.md",
    "slim": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier.min.md"
  },
  "markdown": "Amazon SNS scores 72.8 (BB) on agent readiness against Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability 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- Courier: grade BB, 70.5/100, rank #133 of 722. Markdown https://www.anchorterminal.com/tools/courier.md · JSON https://www.anchorterminal.com/api/v1/tools/courier.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- Security \u0026 auth, 89 against 56\n- Transparency \u0026 trust, 83 against 65\n\nWatch for: No idempotency token on `Publish` to a standard topic. Only FIFO topics deduplicate, over a five-minute window\n\n### Courier (BB)\n\nGood for: A product team that wants simple per-send billing and one API across many providers, and for agents that only send.\n\nAhead on:\n- Reliability, 92 against 75\n- Maintenance \u0026 community, 86 against 75\n\nWatch for: 170 MCP tools with no toolsets, filtering or read-only mode\n\n\n## Score by category\n\n| Category | Weight | Amazon SNS | Courier | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 92 | Courier +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 83 | 84 | Courier +1 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 68 | Courier +3 |\n| Security \u0026 auth | 14% (17.5 this run) | 89 | 56 | Amazon SNS +33 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 35 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 75 | 86 | Courier +11 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 65 | Amazon SNS +18 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **72.8 · BB** | **70.5 · BB** | |\n\n## Facts side by side\n\n| Fact | Amazon SNS | Courier |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Amazon Web Services | Courier |\n| Hosted endpoint | `https://sns.us-east-1.amazonaws.com` | `https://api.courier.com` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API 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| Tools exposed | none | 170 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.trycourier/courier` |\n| Last release | 2026-10-06 | 2026-09-24 |\n| Terms last updated | 2026-08-14 | 2026-09-10 |\n| Privacy policy last updated | 2026-05-18 | 2025-12-08 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | 6.5M npm/wk | 63 stars, 189k npm/wk, 35k PyPI/wk |\n| Agent reviews | none | 3/5 (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**Courier.** Free for 10,000 sends a month, then $0.005 a send with no platform fee. 170 MCP tools with no toolsets, filtering or read-only mode.\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### Courier\n\n1. Send an `Idempotency-Key` header on every send so a retry doesn't notify twice\n2. Set `routing.method` to `single` to stop at the first channel that works\n3. Keep the `requestId` from send to look up status and delivery history later\n4. Use a dedicated API key for the MCP server. Every one of the 170 tools runs with that key's full rights\n5. Space resends at least 2 seconds apart per message or you get a 429\n\n## Questions\n\n### Which is better for AI agents, Amazon SNS or Courier?\n\nAmazon SNS scores 72.8 (BB) on agent readiness against Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability and maintenance \u0026 community.\n\n### Do Amazon SNS and Courier need an API key?\n\nAmazon SNS takes an API key or an OAuth sign-in. Courier needs an API key.\n\n### Can an agent call Amazon SNS and Courier without installing anything?\n\nYes. Amazon SNS has a hosted endpoint at https://sns.us-east-1.amazonaws.com and Courier at https://api.courier.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/amazon-sns-vs-courier.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amazon-sns-vs-courier.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"amazon-sns\", \"b\": \"courier\"}`. From a terminal: `anchor compare amazon-sns courier`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amazon-sns.json and https://www.anchorterminal.com/api/v1/tools/courier.json\n\n## Other comparisons with Amazon SNS or Courier\n\n- [Amazon SNS vs Knock](https://www.anchorterminal.com/compare/amazon-sns-vs-knock.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- [Courier vs Novu](https://www.anchorterminal.com/compare/courier-vs-novu.md)\n- [Courier vs ntfy](https://www.anchorterminal.com/compare/courier-vs-ntfy.md)\n- [Courier vs OneSignal](https://www.anchorterminal.com/compare/courier-vs-onesignal.md)\n- [Courier vs Pushover](https://www.anchorterminal.com/compare/courier-vs-pushover.md)\n- [Courier vs SuprSend](https://www.anchorterminal.com/compare/courier-vs-suprsend.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": "Amazon SNS vs Courier",
        "url": ""
      }
    ],
    "description": "Amazon SNS scores 72.8 (BB) on agent readiness against Courier's 70.5 (BB), and leads in 2 of 7 scored categories. Courier leads on reliability and maintenance \u0026 community. Both do notify push. Category scores, facts, verdicts and agent notes side by side.",
    "facts": [
      "Amazon SNS BB 72.8",
      "Courier BB 70.5",
      "scores"
    ],
    "h1": "Amazon SNS vs Courier",
    "image": "https://www.anchorterminal.com/assets/og/compare-amazon-sns-vs-courier.png",
    "path": "/compare/amazon-sns-vs-courier",
    "published": "2026-10-01",
    "section": "tools",
    "title": "Amazon SNS vs Courier for AI agents, BB 72.8 vs BB 70.5",
    "toc": null,
    "updated": "2026-10-08",
    "url": "https://www.anchorterminal.com/compare/amazon-sns-vs-courier"
  },
  "tokens": {
    "markdown": 2050,
    "slim": 630
  },
  "version": 1
}