{
  "data": {
    "a": {
      "slug": "aws-end-user-messaging",
      "name": "AWS End User Messaging",
      "vendor": "Amazon Web Services",
      "vendorUrl": "https://aws.amazon.com/end-user-messaging/",
      "kind": "http-api",
      "category": "messaging",
      "summary": "AWS's messaging service for SMS, MMS, RCS, WhatsApp, voice and push, formerly the channel APIs of Amazon Pinpoint. Agents call the SMS and Voice v2 API or the Social Messaging API with IAM-signed requests, through the AWS CLI or SDKs.",
      "url": "https://www.anchorterminal.com/tools/aws-end-user-messaging",
      "markdownUrl": "https://www.anchorterminal.com/tools/aws-end-user-messaging.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/aws-end-user-messaging.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/aws-end-user-messaging.json",
      "repo": "https://github.com/aws/api-models-aws",
      "license": "Proprietary service under the AWS Customer Agreement. The AWS SDKs are Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://sms-voice.us-east-1.amazonaws.com",
      "packages": [
        {
          "registry": "npm",
          "name": "@aws-sdk/client-pinpoint-sms-voice-v2"
        },
        {
          "registry": "npm",
          "name": "@aws-sdk/client-socialmessaging"
        },
        {
          "registry": "pypi",
          "name": "boto3"
        }
      ],
      "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 policies use the `sms-voice` action prefix with resource ARNs and condition keys. Access is self-serve with an AWS account, but each Region starts in a sandbox, and production access is granted through an AWS Support case. US numbers need carrier registration, and WhatsApp needs a linked WhatsApp Business Account.",
      "pricing": "usage",
      "pricingNotes": "Pay per message with no monthly minimum. US SMS is $0.00774 a message part plus a $0.00421 carrier fee, UK SMS $0.05, US MMS $0.02 plus $0.01. WhatsApp adds $0.005 per outbound message to Meta's fee. Push is free for the first 1,000,000 notifications a month. There is no SMS free allowance. New AWS customers get up to $200 in Free Tier credits, and AWS says most can sign up without a payment method. The sandbox lets an account send to verified numbers without a contract (https://aws.amazon.com/end-user-messaging/pricing/, https://aws.amazon.com/free/free-tier-faqs/).",
      "priceSummary": "$1 / mo",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the user guide index, the API models or the pricing page (checked 2026-10-08).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": 406900,
        "pypiWeekly": null,
        "asOf": "2026-10-08"
      },
      "docsUrl": "https://docs.aws.amazon.com/sms-voice/latest/userguide/what-is-sms-mms.html",
      "llmsTxt": "https://docs.aws.amazon.com/sms-voice/latest/userguide/llms.txt",
      "capabilities": [
        "messaging.sms",
        "messaging.mms",
        "messaging.whatsapp",
        "messaging.rcs",
        "messaging.verify",
        "messaging.inbound"
      ],
      "tags": [
        "hosted",
        "llms-txt",
        "typescript",
        "python",
        "sms",
        "whatsapp",
        "rcs",
        "enterprise"
      ],
      "lastRelease": "2026-10-06",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 74.3,
        "grade": "BB",
        "agentReady": true,
        "rank": 64,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 3,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 71,
          "maintenance": 85,
          "payments": 30,
          "reliability": 73,
          "schema": 88,
          "security": 88,
          "transparency": 83
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-08"
        },
        "negative": 0,
        "verdict": "IAM policies limit a credential to single actions and resources, CloudTrail can log every send, and enforced monthly spend limits cap cost. New accounts start in a sandbox with a $1 monthly SMS limit and ten verified recipients, production access needs a support case per Region, and the send actions take no idempotency token.",
        "bestFor": "Teams already on AWS that want SMS, MMS, RCS and WhatsApp under IAM, CloudTrail and per-Region control at carrier-level prices.",
        "strengths": [
          "IAM policies per action and resource with condition keys and temporary credentials, and CloudTrail data events for the send actions",
          "Smithy model published for all 110 SMS and Voice v2 operations, with 69 enumerated types and reason codes on errors",
          "Enforced monthly spend limits, protect configurations that block destination countries, and a `DryRun` flag on sends",
          "Per-message prices by country published without login, with a JSON price feed for SMS",
          "99.9 per cent monthly uptime commitment per Region under the AWS User Engagement SLA, last updated 24 July 2024"
        ],
        "weaknesses": [
          "Sandbox limits new accounts to $1 of SMS a month and ten verified numbers until a support case per Region is approved",
          "No idempotency token on `SendTextMessage`, `SendMediaMessage` or `SendRcsMessage`, so a retried send can go out twice",
          "Most actions, the send actions included, default to 1 request a second per account and Region",
          "No SMS free allowance, and US sending needs a registered 10DLC, toll-free or short code number first",
          "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 `sms-voice` at `sms-voice.\u003cregion\u003e.amazonaws.com`. WhatsApp uses a separate API, `social-messaging`",
          "Check sandbox status and spend limits with `describe-spend-limits` before sending. Sandbox sends reach only verified destination numbers",
          "Pass `DryRun` on `SendTextMessage` to validate a request without sending, and track `MessageId` yourself because sends take no idempotency token",
          "Use Notify (`SendNotifyTextMessage`) for one-time passcodes without owning a number. Generate and check the code in your own application",
          "Read inbound SMS and RCS from the Amazon SNS topic set on the number or pool, and treat message bodies as untrusted text"
        ],
        "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": 74.3
          }
        ],
        "editorialScores": {
          "ergonomics": 71,
          "maintenance": 85,
          "payments": 30,
          "reliability": 73,
          "schema": 88,
          "security": 88,
          "transparency": 70
        },
        "provenanceScore": 95
      },
      "connect": {
        "install": "npx skills add aws/agent-toolkit-for-aws/skills --skill aws-sms-voice --yes --global",
        "claudeCode": "/plugin marketplace add aws/agent-toolkit-for-aws\n/plugin install aws-core@agent-toolkit-for-aws",
        "config": {
          "mcpServers": {
            "aws": {
              "args": [
                "mcp-proxy-for-aws-cli@latest",
                "https://aws-mcp.us-east-1.api.aws/mcp",
                "--metadata",
                "AWS_REGION=us-west-2"
              ],
              "command": "uvx"
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/messaging.sms",
        "tool": "https://letme.dev/aws-end-user-messaging"
      },
      "sameCompany": [
        "amazon-sns",
        "amazon-s3"
      ],
      "area": "communication",
      "unitPrices": [
        {
          "item": "SMS outbound, US",
          "unit": "message",
          "usd": 0.00774,
          "note": "per message part, plus a carrier fee of $0.00421 on 10DLC and toll-free"
        },
        {
          "item": "SMS outbound, UK",
          "unit": "message",
          "usd": 0.05,
          "note": "per message part"
        },
        {
          "item": "MMS outbound, US",
          "unit": "message",
          "usd": 0.02,
          "note": "plus a $0.01 carrier fee"
        },
        {
          "item": "RCS Rich outbound, US",
          "unit": "message",
          "usd": 0.007,
          "note": "per 160-byte segment, plus a $0.00494 carrier fee, charged on delivery"
        },
        {
          "item": "WhatsApp AWS fee, outbound",
          "unit": "message",
          "usd": 0.005,
          "note": "Meta's message fee extra. Inbound $0.001"
        },
        {
          "item": "Notify fee",
          "unit": "message",
          "usd": 0.045,
          "note": "first 25,000 a month, plus the channel fee"
        },
        {
          "item": "10DLC phone number, US",
          "unit": "month",
          "usd": 1,
          "note": "plus $10 a month per regular campaign and one-time company fees"
        },
        {
          "item": "Toll-free phone number, US",
          "unit": "month",
          "usd": 2
        },
        {
          "item": "Carrier lookup",
          "unit": "call",
          "usd": 0.006,
          "note": "per phone number validation request"
        }
      ],
      "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/sms-voice/latest/userguide/doc-history.html",
        "securityTxt": "expired",
        "checked": "2026-10-08",
        "notes": [
          "The AWS Customer Agreement (last updated 14 August 2026) names Amazon Web Services, Inc., 410 Terry Avenue North, Seattle, as the contracting party for countries not listed in its table, with other AWS entities by account country.",
          "Section 29 of the AWS Service Terms (last updated 1 October 2026) adds terms for Amazon Pinpoint and AWS End User Messaging, and says AMCS LLC sells parts of the service in Japan and AMCS SG Private Limited in Singapore (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 sms-voice.\u003cregion\u003e.amazonaws.com, while product and legal pages sit on aws.amazon.com."
        ],
        "score": 95
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/aws-end-user-messaging.json",
      "live": {
        "slug": "aws-end-user-messaging",
        "probe": {
          "target": "https://sms-voice.us-east-1.amazonaws.com",
          "method": "get",
          "lastAt": "2026-10-08T21:12:04.571752415Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 251,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 257,
          "p95ms24h": 291,
          "samples24h": 21,
          "samples30d": 21,
          "days": [
            {
              "date": "2026-10-08",
              "probes": 21,
              "ok": 21
            }
          ]
        },
        "updatedAt": "2026-10-08T21:12:04.571752415Z"
      }
    },
    "answer": "AWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories.",
    "b": {
      "slug": "bandwidth",
      "name": "Bandwidth Messaging API + MCP",
      "vendor": "Bandwidth",
      "vendorUrl": "https://www.bandwidth.com",
      "kind": "http-api",
      "category": "messaging",
      "summary": "US carrier's messaging API for SMS, MMS and RCS over 10DLC, toll-free and short codes, with published US rates.",
      "url": "https://www.anchorterminal.com/tools/bandwidth",
      "markdownUrl": "https://www.anchorterminal.com/tools/bandwidth.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/bandwidth.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/bandwidth.json",
      "repo": "https://github.com/Bandwidth/mcp-server",
      "transports": [
        "http",
        "stdio",
        "streamable-http"
      ],
      "remoteUrl": "https://messaging.bandwidth.com/api/v2",
      "packages": [
        {
          "registry": "npm",
          "name": "bandwidth-sdk"
        },
        {
          "registry": "pypi",
          "name": "bandwidth-sdk"
        }
      ],
      "auth": "oauth",
      "authNotes": "OAuth 2.0 client credentials. Exchange the client ID and secret at api.bandwidth.com/api/v1/oauth2/token for a Bearer token. Legacy API users with Basic auth are being migrated. The MCP server takes BW_CLIENT_ID and BW_CLIENT_SECRET.",
      "pricing": "paid",
      "pricingNotes": "Messaging is contract-first with account-managed onboarding. Published US rates are 10DLC SMS $0.004 and MMS $0.015 a message, toll-free SMS $0.007 and MMS $0.020, short code SMS $0.008 and MMS $0.020. The Build free trial (3,000 credits, no card) covers voice and SIP only (https://www.bandwidth.com/pricing/).",
      "priceSummary": "Paid",
      "where": "both",
      "x402": {
        "level": "no",
        "evidence": "No x402 or stablecoin payment path in docs, pricing or agent discovery files (checked 2026-09-30).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 2,
        "npmWeekly": 12740,
        "pypiWeekly": 39218,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://dev.bandwidth.com",
      "llmsTxt": "https://dev.bandwidth.com/llms.txt",
      "openapi": "https://dev.bandwidth.com/spec/messaging.yml",
      "capabilities": [
        "messaging.sms",
        "messaging.mms",
        "messaging.rcs",
        "messaging.voice",
        "messaging.verify",
        "messaging.inbound"
      ],
      "tags": [
        "hosted",
        "mcp",
        "llms-txt",
        "openapi",
        "typescript",
        "python",
        "webhooks",
        "sms",
        "enterprise"
      ],
      "lastRelease": "2026-09-22",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 64.3,
        "grade": "B",
        "agentReady": false,
        "rank": 276,
        "ranked": true,
        "rankOf": 722,
        "categoryRank": 7,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 73,
          "maintenance": 78,
          "payments": 20,
          "reliability": 70,
          "schema": 86,
          "security": 55,
          "transparency": 63
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "10DLC SMS $0.004, toll-free $0.007 and short code $0.008 a message, published. Messaging accounts are onboarded by sales, and the free Build trial covers voice only.",
        "bestFor": "US and Canada senders at volume who want carrier-owned routes and will talk to sales.",
        "strengths": [
          "10DLC SMS $0.004, toll-free $0.007 and short code $0.008 a message, published",
          "OAuth 2.0 client credentials with roles, account scope and two-secret rotation",
          "A full queue returns 429 stating the allowed rate and queue size",
          "OpenAPI spec for messaging and llms.txt with Markdown pages",
          "MCP tool profiles keep a messaging agent to the send, list and media tools"
        ],
        "weaknesses": [
          "Messaging accounts are onboarded by sales, and the free Build trial covers voice only",
          "No callback signing found",
          "No SLA, sub-processor list or retention periods found",
          "The MCP is beta, installed by cloning the repo, with no licence file",
          "No security.txt, bug bounty or disclosure policy found"
        ],
        "agentNotes": [
          "Exchange the client ID and secret for a Bearer token first, tokens last 1 hour",
          "Set `BW_MCP_PROFILE=messaging` to load only the messaging tools",
          "Pass at least one filter to listMessages, with millisecond-precision timestamps",
          "On a 429, read the allowed rate in the error and pace sends to it"
        ],
        "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": 64.3
          }
        ],
        "editorialScores": {
          "ergonomics": 73,
          "maintenance": 78,
          "payments": 20,
          "reliability": 70,
          "schema": 86,
          "security": 55,
          "transparency": 35
        },
        "provenanceScore": 90
      },
      "connect": {
        "http": "curl -X POST \"https://messaging.bandwidth.com/api/v2/users/$BW_ACCOUNT_ID/messages\" -H \"Authorization: Bearer $BW_ACCESS_TOKEN\" \\\n  -H \"Content-Type: application/json\" -d '{\"to\":[\"+15555550123\"],\"from\":\"+15555550100\",\"text\":\"Hello from Bandwidth\",\"applicationId\":\"'$BW_MESSAGING_APPLICATION_ID'\"}'",
        "config": {
          "mcpServers": {
            "bandwidth": {
              "args": [
                "--from",
                "/path/to/mcp-server",
                "start"
              ],
              "command": "uvx",
              "env": {
                "BW_CLIENT_ID": "${BW_CLIENT_ID}",
                "BW_CLIENT_SECRET": "${BW_CLIENT_SECRET}",
                "BW_MCP_PROFILE": "messaging"
              }
            }
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/messaging.sms",
        "tool": "https://letme.dev/bandwidth"
      },
      "sameCompany": [
        "bandwidth-voice"
      ],
      "area": "communication",
      "unitPrices": [
        {
          "item": "SMS outbound, US 10DLC",
          "unit": "message",
          "usd": 0.004,
          "note": "US, published list rate"
        },
        {
          "item": "SMS outbound, US toll-free",
          "unit": "message",
          "usd": 0.007,
          "note": "US"
        },
        {
          "item": "SMS outbound, US short code",
          "unit": "message",
          "usd": 0.008,
          "note": "US"
        },
        {
          "item": "MMS outbound, US 10DLC",
          "unit": "message",
          "usd": 0.015,
          "note": "US"
        }
      ],
      "provenance": {
        "legalEntity": "Bandwidth Inc.",
        "domain": "bandwidth.com",
        "domainRegistered": "1995-02-20",
        "endpointOnVendorDomain": true,
        "terms": "https://www.bandwidth.com/legal/communications-services-agreement/",
        "privacy": "https://www.bandwidth.com/legal/privacy/",
        "statusPage": "https://status.bandwidth.com",
        "changelog": "https://www.bandwidth.com/release-notes/",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "score": 90
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/bandwidth.json",
      "live": {
        "slug": "bandwidth",
        "probe": {
          "target": "https://messaging.bandwidth.com/api/v2",
          "method": "get",
          "lastAt": "2026-10-08T21:12:05.20321173Z",
          "lastOk": false,
          "lastStatus": 503,
          "lastMs": 324,
          "lastNote": "server error",
          "authRequired": false,
          "uptime24h": 0,
          "uptime30d": 0,
          "p50ms24h": 0,
          "p95ms24h": 0,
          "samples24h": 271,
          "samples30d": 2157,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 0
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 0
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 0
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 0
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 0
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 0
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 0
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 0
            },
            {
              "date": "2026-10-08",
              "probes": 239,
              "ok": 0
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.bandwidth.com",
          "indicator": "major",
          "summary": "Partial System Outage",
          "checkedAt": "2026-10-08T21:05:51.998944039Z"
        },
        "versions": [
          {
            "registry": "github",
            "name": "Bandwidth/mcp-server",
            "version": "v0.3.0",
            "released": "2026-06-11",
            "seenAt": "2026-10-08T16:01:58.630024128Z"
          },
          {
            "registry": "npm",
            "name": "bandwidth-sdk",
            "version": "8.3.0",
            "seenAt": "2026-10-08T16:01:54.898924522Z"
          },
          {
            "registry": "pypi",
            "name": "bandwidth-sdk",
            "version": "23.3.0",
            "released": "2026-09-22",
            "seenAt": "2026-10-08T16:01:56.554215185Z"
          }
        ],
        "githubStars": 2,
        "npmWeekly": 14835,
        "pypiWeekly": 31119,
        "securityTxt": {
          "url": "https://bandwidth.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-08T15:38:40.294505928Z"
        },
        "llmsTxt": {
          "url": "https://dev.bandwidth.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-10-08T14:00:07.706040851Z"
        },
        "domain": {
          "domain": "bandwidth.com",
          "registered": "1995-02-20",
          "source": "https://rdap.verisign.com/com/v1/domain/bandwidth.com",
          "checkedAt": "2026-10-04T13:08:39.296680691Z"
        },
        "updatedAt": "2026-10-08T21:12:05.20321173Z"
      }
    },
    "facts": [
      {
        "a": "HTTP API",
        "b": "HTTP API",
        "name": "Kind"
      },
      {
        "a": "Amazon Web Services",
        "b": "Bandwidth",
        "name": "Vendor"
      },
      {
        "a": "https://sms-voice.us-east-1.amazonaws.com",
        "b": "https://messaging.bandwidth.com/api/v2",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP, stdio, Streamable HTTP",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Paid",
        "name": "Pricing"
      },
      {
        "a": "$0.0077 per message",
        "b": "$0.004 per message",
        "name": "Price for messaging sms"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the AWS Customer Agreement. The AWS SDKs are Apache-2.0",
        "b": "none",
        "name": "Licence"
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      {
        "a": "no",
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      {
        "a": "yes",
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        "name": "llms.txt"
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        "b": "2026-09-22",
        "name": "Last release"
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        "a": "2026-08-14",
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        "name": "Terms last updated"
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      {
        "a": "2026-05-18",
        "b": "2026-08-25",
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        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
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      {
        "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"
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      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
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      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Arbitration or class-action waiver"
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      {
        "a": "407k npm/wk",
        "b": "2 stars, 13k npm/wk, 39k PyPI/wk",
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      {
        "a": "none",
        "b": "3.5/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "AWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories.",
        "question": "Which is better for AI agents, AWS End User Messaging or Bandwidth Messaging API + MCP?"
      },
      {
        "answer": "Bandwidth Messaging API + MCP, at $0.004 per message against $0.0077 per message for AWS End User Messaging. These are the vendors' published prices for the job.",
        "question": "Which is cheaper for messaging sms, AWS End User Messaging or Bandwidth Messaging API + MCP?"
      },
      {
        "answer": "AWS End User Messaging takes an API key or an OAuth sign-in. Bandwidth Messaging API + MCP uses an OAuth sign-in.",
        "question": "Do AWS End User Messaging and Bandwidth Messaging API + MCP need an API key?"
      },
      {
        "answer": "Yes. AWS End User Messaging has a hosted endpoint at https://sms-voice.us-east-1.amazonaws.com and Bandwidth Messaging API + MCP at https://messaging.bandwidth.com/api/v2.",
        "question": "Can an agent call AWS End User Messaging and Bandwidth Messaging API + MCP without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Security \u0026 auth, 88 against 55",
          "Payments \u0026 pricing, 30 against 20",
          "Maintenance \u0026 community, 85 against 78",
          "Transparency \u0026 trust, 83 against 63"
        ],
        "also": [
          "Agent-ready, a grade of BB or better"
        ],
        "goodFor": "Teams already on AWS that want SMS, MMS, RCS and WhatsApp under IAM, CloudTrail and per-Region control at carrier-level prices.",
        "slug": "aws-end-user-messaging",
        "watchFor": "Sandbox limits new accounts to $1 of SMS a month and ten verified numbers until a support case per Region is approved"
      },
      {
        "aheadOn": null,
        "also": [
          "Cheaper for messaging sms, $0.004 against $0.0077 per message",
          "Runs on your own machine"
        ],
        "goodFor": "US and Canada senders at volume who want carrier-owned routes and will talk to sales.",
        "slug": "bandwidth",
        "watchFor": "Messaging accounts are onboarded by sales, and the free Build trial covers voice only"
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      {
        "json": "https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-clicksend.json",
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        "aws-end-user-messaging": 73,
        "bandwidth": 70,
        "by": 3,
        "edge": "aws-end-user-messaging",
        "key": "reliability",
        "name": "Reliability",
        "weight": 16
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      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "aws-end-user-messaging": 88,
        "bandwidth": 86,
        "by": 2,
        "edge": "aws-end-user-messaging",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "aws-end-user-messaging": 71,
        "bandwidth": 73,
        "by": 2,
        "edge": "bandwidth",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "aws-end-user-messaging": 88,
        "bandwidth": 55,
        "by": 33,
        "edge": "aws-end-user-messaging",
        "key": "security",
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "aws-end-user-messaging": 30,
        "bandwidth": 20,
        "by": 10,
        "edge": "aws-end-user-messaging",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "aws-end-user-messaging": 85,
        "bandwidth": 78,
        "by": 7,
        "edge": "aws-end-user-messaging",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "aws-end-user-messaging": 83,
        "bandwidth": 63,
        "by": 20,
        "edge": "aws-end-user-messaging",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "AWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories. Both do messaging sms. Bandwidth Messaging API + MCP is cheaper for messaging sms, $0.004 against $0.0077 per message.",
    "verdicts": {
      "aws-end-user-messaging": "IAM policies limit a credential to single actions and resources, CloudTrail can log every send, and enforced monthly spend limits cap cost. New accounts start in a sandbox with a $1 monthly SMS limit and ten verified recipients, production access needs a support case per Region, and the send actions take no idempotency token.",
      "bandwidth": "10DLC SMS $0.004, toll-free $0.007 and short code $0.008 a message, published. Messaging accounts are onboarded by sales, and the free Build trial covers voice only."
    }
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  "markdown": "AWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories. Both do messaging sms. Bandwidth Messaging API + MCP is cheaper for messaging sms, $0.004 against $0.0077 per message.\n\n- AWS End User Messaging: grade BB, 74.3/100, rank #64 of 722. Markdown https://www.anchorterminal.com/tools/aws-end-user-messaging.md · JSON https://www.anchorterminal.com/api/v1/tools/aws-end-user-messaging.json\n- Bandwidth Messaging API + MCP: grade B, 64.3/100, rank #276 of 722. Markdown https://www.anchorterminal.com/tools/bandwidth.md · JSON https://www.anchorterminal.com/api/v1/tools/bandwidth.json\n\n## Which one, for what\n\n### AWS End User Messaging (BB)\n\nGood for: Teams already on AWS that want SMS, MMS, RCS and WhatsApp under IAM, CloudTrail and per-Region control at carrier-level prices.\n\nAhead on:\n- Security \u0026 auth, 88 against 55\n- Payments \u0026 pricing, 30 against 20\n- Maintenance \u0026 community, 85 against 78\n- Transparency \u0026 trust, 83 against 63\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: Sandbox limits new accounts to $1 of SMS a month and ten verified numbers until a support case per Region is approved\n\n### Bandwidth Messaging API + MCP (B)\n\nGood for: US and Canada senders at volume who want carrier-owned routes and will talk to sales.\n\nAlso in its favour:\n- Cheaper for messaging sms, $0.004 against $0.0077 per message\n- Runs on your own machine\n\nWatch for: Messaging accounts are onboarded by sales, and the free Build trial covers voice only\n\n\n## Score by category\n\n| Category | Weight | AWS End User Messaging | Bandwidth Messaging API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 73 | 70 | AWS End User Messaging +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 86 | AWS End User Messaging +2 |\n| Agent ergonomics | 13% (16.2 this run) | 71 | 73 | Bandwidth Messaging API + MCP +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 88 | 55 | AWS End User Messaging +33 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 20 | AWS End User Messaging +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 78 | AWS End User Messaging +7 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 83 | 63 | AWS End User Messaging +20 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **74.3 · BB** | **64.3 · B** | |\n\n## Facts side by side\n\n| Fact | AWS End User Messaging | Bandwidth Messaging API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Amazon Web Services | Bandwidth |\n| Hosted endpoint | `https://sms-voice.us-east-1.amazonaws.com` | `https://messaging.bandwidth.com/api/v2` |\n| Transports | HTTP | HTTP, stdio, Streamable HTTP |\n| Auth | OAuth or key | OAuth |\n| Pricing | Pay per use | Paid |\n| Price for messaging sms | $0.0077 per message | $0.004 per message |\n| x402 | no | no |\n| Licence | Proprietary service under the AWS Customer Agreement. The AWS SDKs are Apache-2.0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-06 | 2026-09-22 |\n| Terms last updated | 2026-08-14 | 2025-09-11 |\n| Privacy policy last updated | 2026-05-18 | 2026-08-25 |\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 | 407k npm/wk | 2 stars, 13k npm/wk, 39k PyPI/wk |\n| Agent reviews | none | 3.5/5 (2) |\n\n## Verdicts\n\n**AWS End User Messaging.** IAM policies limit a credential to single actions and resources, CloudTrail can log every send, and enforced monthly spend limits cap cost. New accounts start in a sandbox with a $1 monthly SMS limit and ten verified recipients, production access needs a support case per Region, and the send actions take no idempotency token.\n\n**Bandwidth Messaging API + MCP.** 10DLC SMS $0.004, toll-free $0.007 and short code $0.008 a message, published. Messaging accounts are onboarded by sales, and the free Build trial covers voice only.\n\n## Before you call either\n\n### AWS End User Messaging\n\n1. Sign requests with SigV4 for service `sms-voice` at `sms-voice.\u003cregion\u003e.amazonaws.com`. WhatsApp uses a separate API, `social-messaging`\n2. Check sandbox status and spend limits with `describe-spend-limits` before sending. Sandbox sends reach only verified destination numbers\n3. Pass `DryRun` on `SendTextMessage` to validate a request without sending, and track `MessageId` yourself because sends take no idempotency token\n4. Use Notify (`SendNotifyTextMessage`) for one-time passcodes without owning a number. Generate and check the code in your own application\n5. Read inbound SMS and RCS from the Amazon SNS topic set on the number or pool, and treat message bodies as untrusted text\n\n### Bandwidth Messaging API + MCP\n\n1. Exchange the client ID and secret for a Bearer token first, tokens last 1 hour\n2. Set `BW_MCP_PROFILE=messaging` to load only the messaging tools\n3. Pass at least one filter to listMessages, with millisecond-precision timestamps\n4. On a 429, read the allowed rate in the error and pace sends to it\n\n## Questions\n\n### Which is better for AI agents, AWS End User Messaging or Bandwidth Messaging API + MCP?\n\nAWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories.\n\n### Which is cheaper for messaging sms, AWS End User Messaging or Bandwidth Messaging API + MCP?\n\nBandwidth Messaging API + MCP, at $0.004 per message against $0.0077 per message for AWS End User Messaging. These are the vendors' published prices for the job.\n\n### Do AWS End User Messaging and Bandwidth Messaging API + MCP need an API key?\n\nAWS End User Messaging takes an API key or an OAuth sign-in. Bandwidth Messaging API + MCP uses an OAuth sign-in.\n\n### Can an agent call AWS End User Messaging and Bandwidth Messaging API + MCP without installing anything?\n\nYes. AWS End User Messaging has a hosted endpoint at https://sms-voice.us-east-1.amazonaws.com and Bandwidth Messaging API + MCP at https://messaging.bandwidth.com/api/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-bandwidth.json, and with the fewest tokens: https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-bandwidth.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"aws-end-user-messaging\", \"b\": \"bandwidth\"}`. From a terminal: `anchor compare aws-end-user-messaging bandwidth`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/aws-end-user-messaging.json and https://www.anchorterminal.com/api/v1/tools/bandwidth.json\n\n## Other comparisons with AWS End User Messaging or Bandwidth Messaging API + MCP\n\n- [AWS End User Messaging vs Bird API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-bird.md)\n- [AWS End User Messaging vs ClickSend SMS API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-clicksend.md)\n- [AWS End User Messaging vs Infobip API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-infobip.md)\n- [AWS End User Messaging vs Plivo API](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-plivo.md)\n- [AWS End User Messaging vs Sendblue](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-sendblue.md)\n- [AWS End User Messaging vs Sinch Messaging APIs + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-sinch.md)\n- [AWS End User Messaging vs Telnyx API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-telnyx.md)\n- [AWS End User Messaging vs Twilio API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-twilio.md)\n- [AWS End User Messaging vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-vonage.md)\n- [Bandwidth Messaging API + MCP vs Bird API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-bird.md)\n- [Bandwidth Messaging API + MCP vs ClickSend SMS API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-clicksend.md)\n- [Bandwidth Messaging API + MCP vs Infobip API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-infobip.md)\n- [Bandwidth Messaging API + MCP vs Plivo API](https://www.anchorterminal.com/compare/bandwidth-vs-plivo.md)\n- [Bandwidth Messaging API + MCP vs Sendblue](https://www.anchorterminal.com/compare/bandwidth-vs-sendblue.md)\n- [Bandwidth Messaging API + MCP vs Sinch Messaging APIs + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-sinch.md)\n- [Bandwidth Messaging API + MCP vs Telnyx API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-telnyx.md)\n- [Bandwidth Messaging API + MCP vs Twilio API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-twilio.md)\n- [Bandwidth Messaging API + MCP vs Vonage Messages API + MCP](https://www.anchorterminal.com/compare/bandwidth-vs-vonage.md)\n- [360dialog WhatsApp API + MCP vs AWS End User Messaging](https://www.anchorterminal.com/compare/360dialog-vs-aws-end-user-messaging.md)\n- [AWS End User Messaging vs WhatsApp Business Platform (Cloud API)](https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-whatsapp-cloud-api.md)\n- [360dialog WhatsApp API + MCP vs Bandwidth Messaging API + MCP](https://www.anchorterminal.com/compare/360dialog-vs-bandwidth.md)\n- [Bandwidth Messaging API + MCP vs WhatsApp Business Platform (Cloud API)](https://www.anchorterminal.com/compare/bandwidth-vs-whatsapp-cloud-api.md)\n",
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        "name": "AWS End User Messaging vs Bandwidth Messaging API + MCP",
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    "description": "AWS End User Messaging scores 74.3 (BB) on agent readiness against Bandwidth Messaging API + MCP's 64.3 (B), and leads in 6 of 7 scored categories. Both do messaging sms. Bandwidth Messaging API + MCP is cheaper for messaging sms, $0.004 against $0.0077 per message. Category…",
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    "published": "2026-10-01",
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    "title": "AWS End User Messaging vs Bandwidth Messaging API + MCP for AI agents",
    "toc": null,
    "updated": "2026-10-08",
    "url": "https://www.anchorterminal.com/compare/aws-end-user-messaging-vs-bandwidth"
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