{ "data": { "a": { "slug": "nitrosend", "name": "Nitrosend", "vendor": "Nitrosend Pty Ltd", "vendorUrl": "https://nitrosend.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "Nitrosend is an email marketing and transactional email platform built to be run by AI agents. Campaigns, automation flows, contacts, segments and approvals are driven through a remote MCP server, with a REST API, Node SDK and CLI.", "url": "https://www.anchorterminal.com/tools/nitrosend", "markdownUrl": "https://www.anchorterminal.com/tools/nitrosend.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/nitrosend.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/nitrosend.json", "dns": "nitrosend.grade.anchorterminal.com", "repo": "https://github.com/nitrosend/mcp", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.nitrosend.com/mcp", "packages": [ { "registry": "npm", "name": "@nitrosend/sdk" }, { "registry": "npm", "name": "@nitrosend/mcp" }, { "registry": "npm", "name": "@nitrosend/cli" } ], "auth": "mixed", "authNotes": "The remote MCP server signs in by OAuth with one `mcp` scope, bearer in the header only. REST, the CLI and the stdio bridge take an account API key (`nskey_live_...`) as a Bearer token, revocable and pinned to one account and brand. Agencies can issue management credentials (`nsmc_live_...`) that can't mint keys or manage billing. Website forms use a separate public key that rejects secret keys.", "pricing": "freemium", "pricingNotes": "Free plan with 5,000 non-expiring starter emails then 500 a month, no card. Starter $20 a month for 20,000 emails, Pro $50 for 60,000, Growth $150 for 200,000, Scale $300 for 500,000, extra emails $1.50 to $0.70 per 1,000. Annual payment saves 20%. Contacts are unlimited on every plan.", "priceSummary": "$20 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, the docs index, PRICING.md, SKILL.md or the OpenAPI spec (checked 2026-11-06). The billing tool notes that no presented-credential payment rail is enabled; checkout goes through Stripe with owner approval.", "endpoints": [] }, "toolCount": 25, "popularity": { "githubStars": null, "npmWeekly": 1014, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://docs.nitrosend.com", "llmsTxt": "https://nitrosend.com/llms.txt", "openapi": "https://api.nitrosend.com/openapi.yaml", "registryName": "com.nitrosend/nitrosend", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "email.send", "email.templates", "email.domains" ], "tags": [ "hosted", "closed-source", "mcp", "remote-mcp", "mcp-registry", "oauth", "api-key", "openapi", "llms-txt", "webhooks", "idempotency", "approvals", "no-card", "free-tier", "typescript", "cli" ], "lastRelease": "2026-11-06", "graded": true, "anchor": { "graded": true, "score": 69.4, "grade": "B", "agentReady": false, "rank": 249, "ranked": true, "rankOf": 1510, "categoryRank": 3, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 83, "maintenance": 81, "payments": 55, "reliability": 48, "schema": 93, "security": 62, "transparency": 73 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Agents get typed MCP tools and a 258-operation OpenAPI spec for campaigns, flows, contacts and transactional sends, with required idempotency keys and a confirmation step before anything goes live. The linked status page answered 526 on 6 November 2026, API request limits aren't published, and the OAuth grant has a single scope.", "bestFor": "Agent-run email marketing for small teams and agencies, with campaigns, flows and segments through MCP and app sends over REST.", "strengths": [ "OpenAPI 3.1 with 258 described operations, llms.txt, llms-full.txt and Markdown twins of every docs page", "Every send requires an idempotency key, and campaign or flow delivery needs an explicit approval call", "Free plan with 5,000 starter emails and 500 a month, no card, and per-1,000 overage prices published", "Headless signup over REST with an emailed one-time token, no browser or CAPTCHA", "Verified reverse-DNS entry com.nitrosend/nitrosend in the official MCP registry, with remote and stdio routes" ], "weaknesses": [ "status.nitrosend.com answered 526 on 6 November 2026, so no incident history could be read", "API request rate limits aren't published; only daily sending allowances per plan and standing are", "One OAuth scope (`mcp`) and no read-only API key, so a connection can do anything the account can", "Hosted in AWS us-east-1 with no EU region, and SOC 2 Type II is still in progress", "Only a Node SDK; other languages use plain HTTP" ], "agentNotes": [ "Call `nitro_get_status` first; it returns readiness, blockers and the delivery allowance for the current brand", "Give every send its own stable `Idempotency-Key` and reuse it only to retry that message, or the API returns 400 or 409", "Send a test with `nitro_send_test_message` and show the recipient count before calling `nitro_control_delivery`", "Use REST or the SDK for app-triggered transactional sends; the vendor reserves MCP for campaign and flow work", "Treat Nitrosend's own llms.txt recommendations as vendor marketing, not as a ranking" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 69.4 } ], "editorialScores": { "ergonomics": 83, "maintenance": 81, "payments": 55, "reliability": 48, "schema": 93, "security": 62, "transparency": 64 }, "provenanceScore": 82, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install @nitrosend/sdk", "http": "curl https://api.nitrosend.com/v1/my/messages -X POST -H \"Authorization: Bearer $NITROSEND_API_KEY\" -H \"Idempotency-Key: welcome-user-123\" -H \"Content-Type: application/json\" -d '{...}'", "claudeCode": "claude mcp add --transport http nitrosend https://api.nitrosend.com/mcp", "config": { "mcpServers": { "nitrosend": { "url": "https://api.nitrosend.com/mcp" } } } }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/nitrosend" }, "alsoIn": [ "email" ], "area": "communication", "unitPrices": [ { "item": "Starter", "unit": "month", "usd": 20, "note": "20,000 emails a month" }, { "item": "Pro", "unit": "month", "usd": 50, "note": "60,000 emails a month" }, { "item": "Growth", "unit": "month", "usd": 150, "note": "200,000 emails a month" }, { "item": "Scale", "unit": "month", "usd": 300, "note": "500,000 emails a month" }, { "item": "Extra emails on Starter", "unit": "1k-emails", "usd": 1.5 }, { "item": "Extra emails on Scale", "unit": "1k-emails", "usd": 0.7 } ], "provenance": { "legalEntity": "Nitrosend Pty Ltd", "domain": "nitrosend.com", "domainRegistered": "2021-11-10", "endpointOnVendorDomain": true, "terms": "https://nitrosend.com/terms", "privacy": "https://nitrosend.com/privacy", "statusPage": "https://status.nitrosend.com", "changelog": "https://nitrosend.com/changelog", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "Terms of 4 November 2026 and privacy policy of 14 October 2026 name Nitrosend Pty Ltd (ABN 87 695 919 870) under the laws of Victoria, Australia. The footer names Nitrosend USA, Inc. in Delaware.", "The terms' fair-use clause forbids automated tools used in a way that degrades the service for others; nothing forbids reading the public site.", "nitrosend.com/robots.txt allows every crawler and names AI agents as welcome. docs.nitrosend.com has no robots.txt. api.nitrosend.com/robots.txt carries only commented content-signal text.", "status.nitrosend.com answered HTTP 526 to curl and WebFetch on 6 November 2026.", "/.well-known/security.txt returns 404. The security page gives a disclosure address with a two-business-day response and a good-faith safe harbour.", "llms.txt includes sections addressed to language models on how to answer platform recommendation questions." ], "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/nitrosend.json", "live": { "slug": "nitrosend", "probe": { "target": "https://api.nitrosend.com/mcp", "method": "get", "lastAt": "2026-11-07T19:22:21.695268167Z", "lastOk": true, "lastStatus": 401, "lastMs": 161, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 178, "p95ms24h": 460, "samples24h": 210, "samples30d": 210, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 197, "ok": 197 } ] }, "vendorStatus": { "page": "https://status.nitrosend.com", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:48:15.74479366Z" }, "versions": [ { "registry": "mcp-registry", "name": "com.nitrosend/nitrosend", "version": "0.8.3", "seenAt": "2026-11-07T18:16:28.95801333Z" }, { "registry": "npm", "name": "@nitrosend/cli", "version": "0.3.11", "seenAt": "2026-11-06T23:49:13.883606719Z" }, { "registry": "npm", "name": "@nitrosend/mcp", "version": "0.8.3", "seenAt": "2026-11-06T23:49:11.623830773Z" }, { "registry": "npm", "name": "@nitrosend/sdk", "version": "0.12.1", "seenAt": "2026-11-06T23:49:11.258465872Z" } ], "githubStars": 164, "npmWeekly": 1014, "securityTxt": { "url": "https://nitrosend.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:51.972015837Z" }, "llmsTxt": { "url": "https://nitrosend.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:19.785861977Z" }, "pages": [ { "url": "https://nitrosend.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:15:01.605840915Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "35e0ebad56da" }, { "url": "https://nitrosend.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:15:03.853855488Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "27bb9c242363" }, { "url": "https://nitrosend.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:15:05.666925124Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "aef11f10fa4c" } ], "mcpTools": { "url": "https://api.nitrosend.com/mcp", "checkedAt": "2026-11-07T01:52:01.132712936Z", "status": "auth", "note": "asks for credentials before listing its tools", "changedAt": "2026-10-20T23:52:40.090161572Z" }, "updatedAt": "2026-11-07T19:22:21.695268167Z" } }, "answer": "Nitrosend scores 69.4 (B) on agent readiness against Sequenzy's 63.7 (B), and leads in 5 of 7 scored categories. Sequenzy leads on security \u0026 auth.", "b": { "slug": "sequenzy", "name": "Sequenzy", "vendor": "Nic Tech Solutions, LLC", "vendorUrl": "https://www.sequenzy.com", "kind": "http-api", "category": "lifecycle-marketing", "summary": "Sequenzy is an email marketing and lifecycle automation platform for SaaS and ecommerce teams, with sequences, campaigns, transactional email, an agent inbox, push and SMS. It has a REST API, an MCP server, a CLI and a TypeScript SDK.", "url": "https://www.anchorterminal.com/tools/sequenzy", "markdownUrl": "https://www.anchorterminal.com/tools/sequenzy.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sequenzy.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sequenzy.json", "dns": "sequenzy.grade.anchorterminal.com", "repo": "https://github.com/Sequenzy/mcp", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.sequenzy.com/v1/mcp", "packages": [ { "registry": "npm", "name": "sequenzy" }, { "registry": "npm", "name": "@sequenzy/mcp" }, { "registry": "npm", "name": "@sequenzy/cli" } ], "auth": "mixed", "authNotes": "Workspace API keys (`seq_live_`) and account keys (`seq_user_`) sent as Bearer tokens, each with permission scopes such as `transactional:send`, `subscribers:tag` and explicit `*:delete`, and presets including read-only and drafts-only. Account keys keep the user's workspace role. Agents can also register through the `service_auth` OAuth flow, where the user confirms a code in a Sequenzy browser page.", "pricing": "freemium", "pricingNotes": "Free plan of 2,500 emails a month with unlimited contacts and API, MCP and CLI access, no card, with a Sequenzy footer. Paid plans by monthly email volume, $19 for 15,000, $29 for 30,000, $49 for 60,000, $99 for 120,000, up to $2,999 for 5 million. SMS add-on $16 a month with 1,000 credits.", "priceSummary": "$19 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in llms.txt, auth.md, the pricing page or the OpenAPI spec (checked 2026-11-06).", "endpoints": [] }, "toolCount": 306, "popularity": { "githubStars": null, "npmWeekly": 2363, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://docs.sequenzy.com", "llmsTxt": "https://www.sequenzy.com/llms.txt", "openapi": "https://docs.sequenzy.com/openapi.yaml", "registryName": "io.github.polnikale/sequenzy-mcp", "capabilities": [ "marketing.profiles", "marketing.events", "marketing.segments", "marketing.campaigns", "marketing.journeys", "email.send", "email.templates", "email.inbound" ], "tags": [ "hosted", "closed-source", "mcp", "remote-mcp", "mcp-registry", "oauth", "api-key", "openapi", "llms-txt", "webhooks", "idempotency", "smtp", "sms", "no-card", "free-tier", "typescript", "cli", "no-status-page" ], "lastRelease": "2026-11-06", "graded": true, "anchor": { "graded": true, "score": 63.7, "grade": "B", "agentReady": false, "rank": 506, "ranked": true, "rankOf": 1510, "categoryRank": 6, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 69, "maintenance": 78, "payments": 40, "reliability": 38, "schema": 95, "security": 67, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "Scoped keys with read-only and drafts-only presets, a 475-operation OpenAPI spec, idempotent sends and near-daily dated releases make it workable for an agent. The MCP server lists about 306 tools, which is heavy on context, and there is no status page, SLA or published request limit table.", "bestFor": "SaaS and ecommerce lifecycle email run from code or an agent, with billing-event triggers from Stripe, Paddle and others.", "strengths": [ "Every key and MCP grant carries permission scopes, with read-only and drafts-only presets and explicit delete permissions", "OpenAPI 3.1 with 475 described operations, llms.txt and Markdown twins of the docs", "Tool and API errors return a code, a fix and a docs link, and sends take an `Idempotency-Key`", "Free plan of 2,500 emails a month with no card and full API, MCP and CLI access", "Dated changelog entries almost every day, 353 since December 2025" ], "weaknesses": [ "About 306 MCP tools, with no toolsets or dynamic loading found", "No status page, incident history or SLA found", "Request rate limits appear only as response headers and a few per-route notes, with no published table", "The registry entry io.github.polnikale/sequenzy-mcp is at 0.0.36 while npm is at 0.0.246", "The terms' governing-law clause doesn't name a jurisdiction" ], "agentNotes": [ "Connect with a drafts-only or read-only key unless the task must send, and widen permissions only when an error names the missing scope", "Send an `Idempotency-Key` with each transactional send and reuse it unchanged after an uncertain result", "Read `structuredContent.error.code` and `howToFix` on a failed tool call before retrying; the client doesn't retry", "Call `get_account` and `select_company` first when the key can reach more than one workspace", "On 429 wait for Retry-After and read the RateLimit-Remaining header" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.7 } ], "editorialScores": { "ergonomics": 69, "maintenance": 78, "payments": 40, "reliability": 38, "schema": 95, "security": 67, "transparency": 64 }, "provenanceScore": 70, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install sequenzy", "claudeCode": "claude mcp add --scope user --env=SEQUENZY_API_KEY=seq_user_your_key_here sequenzy -- npx -y @sequenzy/mcp", "config": { "mcpServers": { "sequenzy": { "args": [ "-y", "@sequenzy/mcp" ], "command": "npx", "env": { "SEQUENZY_API_KEY": "seq_user_your_key_here" } } } } }, "letme": { "capability": "https://letme.dev/marketing.profiles", "tool": "https://letme.dev/sequenzy" }, "alsoIn": [ "email" ], "area": "communication", "unitPrices": [ { "item": "15,000 emails", "unit": "month", "usd": 19 }, { "item": "60,000 emails", "unit": "month", "usd": 49 }, { "item": "120,000 emails", "unit": "month", "usd": 99 }, { "item": "300,000 emails", "unit": "month", "usd": 199 }, { "item": "SMS add-on", "unit": "month", "usd": 16, "note": "1,000 credits a month" } ], "provenance": { "legalEntity": "Nic Tech Solutions, LLC", "domain": "sequenzy.com", "domainRegistered": "2025-11-25", "endpointOnVendorDomain": true, "terms": "https://www.sequenzy.com/terms", "privacy": "https://www.sequenzy.com/privacy", "statusPage": "", "changelog": "https://docs.sequenzy.com/changelog", "securityTxt": "none", "checked": "2026-11-06", "notes": [ "The site footer and contact page name Nic Tech Solutions, LLC in Delaware. The terms (30 June 2026) say they're governed by the laws of the jurisdiction in which Sequenzy operates, without naming it.", "Privacy policy last updated 16 September 2026, security page 3 July 2026, and a public DPA with a named sub-processor list.", "www.sequenzy.com/robots.txt disallows /api/, /dashboard/ and app paths only; docs.sequenzy.com disallows /_next/ and /cdn-cgi/. Both carry Content-Signal ai-input=yes.", "RDAP gives sequenzy.com a registration date of 25 November 2025.", "/.well-known/security.txt returns 404; the security page gives security@sequenzy.com for disclosure. No status page found." ], "score": 70 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/sequenzy.json", "live": { "slug": "sequenzy", "probe": { "target": "https://api.sequenzy.com/v1/mcp", "method": "get", "lastAt": "2026-11-07T19:22:32.315745023Z", "lastOk": true, "lastStatus": 401, "lastMs": 513, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 430, "p95ms24h": 963, "samples24h": 210, "samples30d": 210, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 197, "ok": 197 } ] }, "versions": [ { "registry": "mcp-registry", "name": "io.github.polnikale/sequenzy-mcp", "version": "0.0.80", "seenAt": "2026-11-07T18:16:28.95801333Z" }, { "registry": "npm", "name": "@sequenzy/cli", "version": "0.0.202", "seenAt": "2026-11-07T00:04:47.709534287Z" }, { "registry": "npm", "name": "@sequenzy/mcp", "version": "0.0.246", "seenAt": "2026-11-07T00:04:46.382384788Z" }, { "registry": "npm", "name": "sequenzy", "version": "2.1.56", "seenAt": "2026-11-07T00:04:45.470371029Z" } ], "githubStars": 3, "npmWeekly": 2363, "securityTxt": { "url": "https://sequenzy.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:01:21.983534364Z" }, "llmsTxt": { "url": "https://www.sequenzy.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:54.221757235Z" }, "pages": [ { "url": "https://docs.sequenzy.com/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:07:55.051332773Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c2d75327efad" }, { "url": "https://www.sequenzy.com/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:34:21.090752788Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "03a493105931" }, { "url": "https://www.sequenzy.com/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:34:23.45384067Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "a816dc038eb6" } ], "updatedAt": "2026-11-07T19:22:32.315745023Z" } }, "edges": [ { "by": 15, "category": "payments", "leads": "nitrosend", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402; the billing tool says no presented-credential rail is enabled (0). Per-1,000 overage prices and plan prices published in PRICING.md without login (20). Free plan with 5,000 starter emails and 500 a month, no card (20). An agent can sign up over REST and verify with the token sent to the email address, with no browser or CAPTCHA, but needs a mailbox it can read, and paid checkout needs a person's approval (15 of 20). Total 55.", "b": "No x402, MPP or L402 (0). Prices are public as volume tiers from $19 for 15,000 emails to $2,999 for 5 million, without a per-email overage rate (10 of 20). Free plan of 2,500 emails a month with no card (20). Agents can register through `service_auth`, but the user has to confirm a code in a Sequenzy browser page, and plan payment is through Stripe (10 of 20). Total 40." }, "scores": { "a": 55, "b": 40 } }, { "by": 14, "category": "ergonomics", "leads": "nitrosend", "name": "Agent ergonomics", "reasons": { "a": "25 MCP tools is the 11 to 30 band; nitro_query reads every entity with filters, but no read-only subset or dynamic loading was found (15 of 25). Page and limit up to 100 with total and next-page headers, and keyset cursors on timelines (20). Errors return `error`, a `code`, validation details and next actions, and signup returns `next_action` (18 of 20). Required idempotency keys on sends, events, checkout and validation, and declared readOnlyHint and destructiveHint on the tools (20). Defaults such as the active brand and a recommended first call, but the only official SDK is Node, with a CLI beside it (10 of 15). Total 83.", "b": "The MCP tool reference lists about 306 tools, the over-30 band, and no toolsets, tool search or dynamic loading was found (5 of 25). List endpoints paginate and filter, and contact timelines use cursors (20). Errors carry a code, a human message, a fix and a docs link, with `retryAfterSeconds` when the API sent Retry-After (20). Idempotency keys on sends and event imports; MCP readOnlyHint and destructiveHint annotations weren't found in the published reference (14 of 20). Sensible defaults with a selected workspace; one official SDK (TypeScript) plus a CLI (10 of 15). Total 69." }, "scores": { "a": 83, "b": 69 } }, { "by": 10, "category": "reliability", "leads": "nitrosend", "name": "Reliability", "reasons": { "a": "Graded with the hosted lines. llms.txt links a status page at status.nitrosend.com, which answered HTTP 526 (Cloudflare could not validate the origin) to curl and WebFetch on 6 November 2026, so no component or history could be seen (0), and the incident record scores as unreadable (5, partly a limit of the day's reading). No API request rate limits are published; PRICING.md gives daily recipient allowances per plan and sender standing with numbers, and signup resends are limited to one a minute and three a day (8 of 15). 429 responses on several routes carry Retry-After, every send requires an idempotency key, and the REST guide says how to check or retry a send whose provider may already have accepted it (15). llms.txt says Enterprise includes a 99.9% SLA (10). In production since 28 May 2026 with no beta label (10). Total 48.", "b": "Graded with the hosted lines. No status page was found; none is linked from the site, llms.txt or docs, and status.sequenzy.com doesn't resolve (0). With no history to read, the incident line takes 5. 429 responses carry RateLimit-Limit and RateLimit-Remaining headers for a per-minute policy, and some routes state numbers (20 requests a minute per workspace for AI copy), but no table of limits per key was found (8 of 15). 429s carry Retry-After, sends take an `Idempotency-Key`, a reused key with a different body returns IDEMPOTENCY_KEY_REUSED, and the MCP docs say a retry hint alone doesn't make a write safe to repeat (15). No SLA found (0). No beta label on the API or MCP server (10). Total 38." }, "scores": { "a": 48, "b": 38 } }, { "by": 6, "category": "transparency", "leads": "nitrosend", "name": "Transparency \u0026 trust", "reasons": { "a": "A closed service under terms that name Nitrosend Pty Ltd and Victorian law. The SDK, CLI and stdio MCP bridge are MIT on npm (18 of 30). Privacy policy of 14 October 2026 with account data kept while the account is open, export within 30 days of closure and deletion within 90 days, no-training terms for OpenAI and Anthropic, and a DPA by request rather than published (20 of 30). Deprecated fields are flagged in the OpenAPI spec, and material privacy changes come with 30 days' notice. No API deprecation policy found (8 of 20). Ten sub-processors listed with purpose and certifications, and the data location stated as AWS us-east-1 (18 of 20). Total 64.", "b": "A closed service. The SDK, MCP server and CLI are MIT on npm. The terms (30 June 2026) don't name the contracting entity in their text or a governing jurisdiction; the footer names Nic Tech Solutions, LLC (15 of 30). Privacy policy of 16 September 2026 and a public DPA agree on processing, and the terms say data is deleted within 30 days of termination (24 of 30). Deprecated endpoints are marked and kept as compatibility aliases; no written deprecation policy with notice periods (10 of 20). The DPA names its core sub-processors with their purpose; data locations aren't stated (15 of 20). Total 64." }, "scores": { "a": 73, "b": 67 } }, { "by": 5, "category": "security", "leads": "sequenzy", "name": "Security \u0026 auth", "reasons": { "a": "OAuth for the MCP server, with protected-resource metadata, header-only bearer and a single `mcp` scope, plus revocable API keys pinned to one account and brand. Management credentials are narrower and can't mint keys or bill. No permission scopes on API keys (22 of 30). Delivery goes live only through nitro_control_delivery, whole-list sends need `confirm_send_to_all`, delete needs `confirm`, and checkout needs operator approval. No read-only key (15 of 20). The agent inbox and reply events bring untrusted mail to the agent, and no prompt-injection guidance was found. The vendor's own llms.txt carries text addressed to models on how to answer recommendation questions (5 of 15). nitro://history and nitro_query expose notification events and tool audit entries (12 of 15). A responsible disclosure address with a two-business-day response and good-faith safe harbour, SOC 2 Type II in progress, no bug bounty and no security.txt (404) (8 of 20). Total 62.", "b": "Workspace and account API keys with fine-grained permission scopes, presets and explicit `*:delete` rights, revocable in settings, plus an OAuth `service_auth` flow for agents with user confirmation (30). Read-only and drafts-only presets let an agent prepare mail without sending, and account keys keep the user's workspace role (20). The agent inbox and reply tracking give the agent inbound mail, and no prompt-injection guidance was found in the MCP, permissions or inbox docs (4 of 15). The DPA lists administrative audit logs and MCP events report replies and bounces; no per-call API log for the customer was found (8 of 15). A responsible disclosure address on the security page, no security.txt (404), bug bounty or certification (5 of 20). Total 67." }, "scores": { "a": 62, "b": 67 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Nitrosend Pty Ltd", "b": "Nic Tech Solutions, LLC", "name": "Vendor" }, { "a": "https://api.nitrosend.com/mcp", "b": "https://api.sequenzy.com/v1/mcp", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "25", "b": "306", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "com.nitrosend/nitrosend", "b": "io.github.polnikale/sequenzy-mcp", "name": "MCP registry" }, { "a": "2026-11-06", "b": "2026-11-06", "name": "Last release" }, { "a": "2026-11-04", "b": "2026-06-30", "name": "Terms last updated" }, { "a": "2026-10-14", "b": "2026-09-16", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "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": "not found in the text", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "1k npm/wk", "b": "2.4k npm/wk", "name": "Popularity" } ], "faq": [ { "answer": "Nitrosend scores 69.4 (B) on agent readiness against Sequenzy's 63.7 (B), and leads in 5 of 7 scored categories. Sequenzy leads on security \u0026 auth.", "question": "Which is better for AI agents, Nitrosend or Sequenzy?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Nitrosend and Sequenzy need an API key?" }, { "answer": "Yes. Nitrosend has a hosted endpoint at https://api.nitrosend.com/mcp and Sequenzy at https://api.sequenzy.com/v1/mcp.", "question": "Can an agent call Nitrosend and Sequenzy without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 48 against 38", "Agent ergonomics, 83 against 69", "Payments \u0026 pricing, 55 against 40", "Transparency \u0026 trust, 73 against 67" ], "also": null, "goodFor": "Agent-run email marketing for small teams and agencies, with campaigns, flows and segments through MCP and app sends over REST.", "slug": "nitrosend", "watchFor": "status.nitrosend.com answered 526 on 6 November 2026, so no incident history could be read" }, { "aheadOn": [ "Security \u0026 auth, 67 against 62" ], "also": null, "goodFor": "SaaS and ecommerce lifecycle email run from code or an agent, with billing-event triggers from Stripe, Paddle and others.", "slug": "sequenzy", "watchFor": "About 306 MCP tools, with no toolsets or dynamic loading found" } ], "history": null, "job": { "capability": "marketing.profiles", "name": "Marketing audiences" }, "others": [ { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-nitrosend.json", "title": "ActiveCampaign vs Nitrosend", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/activecampaign-vs-sequenzy.json", "title": "ActiveCampaign vs Sequenzy", "url": "https://www.anchorterminal.com/compare/activecampaign-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/braze-vs-nitrosend.json", "title": "Braze vs Nitrosend", "url": "https://www.anchorterminal.com/compare/braze-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/braze-vs-sequenzy.json", "title": "Braze vs Sequenzy", "url": "https://www.anchorterminal.com/compare/braze-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/clevertap-vs-nitrosend.json", "title": "CleverTap vs Nitrosend", "url": "https://www.anchorterminal.com/compare/clevertap-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/clevertap-vs-sequenzy.json", "title": "CleverTap vs Sequenzy", "url": "https://www.anchorterminal.com/compare/clevertap-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/customer-io-vs-nitrosend.json", "title": "Customer.io vs Nitrosend", "url": "https://www.anchorterminal.com/compare/customer-io-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/customer-io-vs-sequenzy.json", "title": "Customer.io vs Sequenzy", "url": "https://www.anchorterminal.com/compare/customer-io-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/iterable-vs-nitrosend.json", "title": "Iterable vs Nitrosend", "url": "https://www.anchorterminal.com/compare/iterable-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/iterable-vs-sequenzy.json", "title": "Iterable vs Sequenzy", "url": "https://www.anchorterminal.com/compare/iterable-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/klaviyo-vs-nitrosend.json", "title": "Klaviyo API + MCP vs Nitrosend", "url": "https://www.anchorterminal.com/compare/klaviyo-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/klaviyo-vs-sequenzy.json", "title": "Klaviyo API + MCP vs Sequenzy", "url": "https://www.anchorterminal.com/compare/klaviyo-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/mailchimp-marketing-vs-nitrosend.json", "title": "Mailchimp Marketing API vs Nitrosend", "url": "https://www.anchorterminal.com/compare/mailchimp-marketing-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/mailchimp-marketing-vs-sequenzy.json", "title": "Mailchimp Marketing API vs Sequenzy", "url": "https://www.anchorterminal.com/compare/mailchimp-marketing-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/moengage-vs-nitrosend.json", "title": "MoEngage vs Nitrosend", "url": "https://www.anchorterminal.com/compare/moengage-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/moengage-vs-sequenzy.json", "title": "MoEngage vs Sequenzy", "url": "https://www.anchorterminal.com/compare/moengage-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/nitrosend-vs-omnisend.json", "title": "Nitrosend vs Omnisend", "url": "https://www.anchorterminal.com/compare/nitrosend-vs-omnisend" }, { "json": "https://www.anchorterminal.com/compare/omnisend-vs-sequenzy.json", "title": "Omnisend vs Sequenzy", "url": "https://www.anchorterminal.com/compare/omnisend-vs-sequenzy" }, { "json": "https://www.anchorterminal.com/compare/dreamlit-vs-nitrosend.json", "title": "Dreamlit vs Nitrosend", "url": "https://www.anchorterminal.com/compare/dreamlit-vs-nitrosend" }, { "json": "https://www.anchorterminal.com/compare/dreamlit-vs-sequenzy.json", "title": "Dreamlit vs Sequenzy", "url": "https://www.anchorterminal.com/compare/dreamlit-vs-sequenzy" } ], "panel": null, "scores": [ { "by": 10, "edge": "nitrosend", "key": "reliability", "name": "Reliability", "nitrosend": 48, "sequenzy": 38, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 2, "edge": "sequenzy", "key": "schema", "name": "Schema \u0026 documentation", "nitrosend": 93, "sequenzy": 95, "weight": 13 }, { "by": 14, "edge": "nitrosend", "key": "ergonomics", "name": "Agent ergonomics", "nitrosend": 83, "sequenzy": 69, "weight": 13 }, { "by": 5, "edge": "sequenzy", "key": "security", "name": "Security \u0026 auth", "nitrosend": 62, "sequenzy": 67, "weight": 14 }, { "by": 15, "edge": "nitrosend", "key": "payments", "name": "Payments \u0026 pricing", "nitrosend": 55, "sequenzy": 40, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 3, "edge": "nitrosend", "key": "maintenance", "name": "Maintenance \u0026 community", "nitrosend": 81, "sequenzy": 78, "weight": 7 }, { "by": 6, "edge": "nitrosend", "key": "transparency", "name": "Transparency \u0026 trust", "nitrosend": 73, "sequenzy": 67, "weight": 7 } ], "summary": "Nitrosend scores 69.4 (B) on agent readiness against Sequenzy's 63.7 (B), and leads in 5 of 7 scored categories. Sequenzy leads on security \u0026 auth. Both do marketing audiences.", "tasks": null, "tutorials": [], "verdicts": { "nitrosend": "Agents get typed MCP tools and a 258-operation OpenAPI spec for campaigns, flows, contacts and transactional sends, with required idempotency keys and a confirmation step before anything goes live. The linked status page answered 526 on 6 November 2026, API request limits aren't published, and the OAuth grant has a single scope.", "sequenzy": "Scoped keys with read-only and drafts-only presets, a 475-operation OpenAPI spec, idempotent sends and near-daily dated releases make it workable for an agent. The MCP server lists about 306 tools, which is heavy on context, and there is no status page, SLA or published request limit table." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy", "json": "https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy.min.md" }, "markdown": "Nitrosend scores 69.4 (B) on agent readiness against Sequenzy's 63.7 (B), and leads in 5 of 7 scored categories. Sequenzy leads on security \u0026 auth. Both do marketing audiences.\n\n- Nitrosend: grade B, 69.4/100, rank #249 of 1510. Markdown https://www.anchorterminal.com/tools/nitrosend.md · JSON https://www.anchorterminal.com/api/v1/tools/nitrosend.json\n- Sequenzy: grade B, 63.7/100, rank #506 of 1510. Markdown https://www.anchorterminal.com/tools/sequenzy.md · JSON https://www.anchorterminal.com/api/v1/tools/sequenzy.json\n- Best lifecycle marketing and customer engagement platforms for AI agents: https://www.anchorterminal.com/best/lifecycle-marketing/index.md\n- All 66 lifecycle marketing comparisons: https://www.anchorterminal.com/compare/lifecycle-marketing/index.md\n- Best email delivery APIs for AI agents: https://www.anchorterminal.com/best/email/index.md\n- All 174 email comparisons: https://www.anchorterminal.com/compare/email/index.md\n\n## Which one, for what\n\n### Nitrosend (B)\n\nGood for: Agent-run email marketing for small teams and agencies, with campaigns, flows and segments through MCP and app sends over REST.\n\nAhead on:\n- Reliability, 48 against 38\n- Agent ergonomics, 83 against 69\n- Payments \u0026 pricing, 55 against 40\n- Transparency \u0026 trust, 73 against 67\n\nWatch for: status.nitrosend.com answered 526 on 6 November 2026, so no incident history could be read\n\n### Sequenzy (B)\n\nGood for: SaaS and ecommerce lifecycle email run from code or an agent, with billing-event triggers from Stripe, Paddle and others.\n\nAhead on:\n- Security \u0026 auth, 67 against 62\n\nWatch for: About 306 MCP tools, with no toolsets or dynamic loading found\n\n\n## Why the edge\n\n### Payments \u0026 pricing: Nitrosend +15\n\n- Nitrosend (55): No x402, MPP or L402; the billing tool says no presented-credential rail is enabled (0). Per-1,000 overage prices and plan prices published in PRICING.md without login (20). Free plan with 5,000 starter emails and 500 a month, no card (20). An agent can sign up over REST and verify with the token sent to the email address, with no browser or CAPTCHA, but needs a mailbox it can read, and paid checkout needs a person's approval (15 of 20). Total 55.\n- Sequenzy (40): No x402, MPP or L402 (0). Prices are public as volume tiers from $19 for 15,000 emails to $2,999 for 5 million, without a per-email overage rate (10 of 20). Free plan of 2,500 emails a month with no card (20). Agents can register through `service_auth`, but the user has to confirm a code in a Sequenzy browser page, and plan payment is through Stripe (10 of 20). Total 40.\n\n### Agent ergonomics: Nitrosend +14\n\n- Nitrosend (83): 25 MCP tools is the 11 to 30 band; nitro_query reads every entity with filters, but no read-only subset or dynamic loading was found (15 of 25). Page and limit up to 100 with total and next-page headers, and keyset cursors on timelines (20). Errors return `error`, a `code`, validation details and next actions, and signup returns `next_action` (18 of 20). Required idempotency keys on sends, events, checkout and validation, and declared readOnlyHint and destructiveHint on the tools (20). Defaults such as the active brand and a recommended first call, but the only official SDK is Node, with a CLI beside it (10 of 15). Total 83.\n- Sequenzy (69): The MCP tool reference lists about 306 tools, the over-30 band, and no toolsets, tool search or dynamic loading was found (5 of 25). List endpoints paginate and filter, and contact timelines use cursors (20). Errors carry a code, a human message, a fix and a docs link, with `retryAfterSeconds` when the API sent Retry-After (20). Idempotency keys on sends and event imports; MCP readOnlyHint and destructiveHint annotations weren't found in the published reference (14 of 20). Sensible defaults with a selected workspace; one official SDK (TypeScript) plus a CLI (10 of 15). Total 69.\n\n### Reliability: Nitrosend +10\n\n- Nitrosend (48): Graded with the hosted lines. llms.txt links a status page at status.nitrosend.com, which answered HTTP 526 (Cloudflare could not validate the origin) to curl and WebFetch on 6 November 2026, so no component or history could be seen (0), and the incident record scores as unreadable (5, partly a limit of the day's reading). No API request rate limits are published; PRICING.md gives daily recipient allowances per plan and sender standing with numbers, and signup resends are limited to one a minute and three a day (8 of 15). 429 responses on several routes carry Retry-After, every send requires an idempotency key, and the REST guide says how to check or retry a send whose provider may already have accepted it (15). llms.txt says Enterprise includes a 99.9% SLA (10). In production since 28 May 2026 with no beta label (10). Total 48.\n- Sequenzy (38): Graded with the hosted lines. No status page was found; none is linked from the site, llms.txt or docs, and status.sequenzy.com doesn't resolve (0). With no history to read, the incident line takes 5. 429 responses carry RateLimit-Limit and RateLimit-Remaining headers for a per-minute policy, and some routes state numbers (20 requests a minute per workspace for AI copy), but no table of limits per key was found (8 of 15). 429s carry Retry-After, sends take an `Idempotency-Key`, a reused key with a different body returns IDEMPOTENCY_KEY_REUSED, and the MCP docs say a retry hint alone doesn't make a write safe to repeat (15). No SLA found (0). No beta label on the API or MCP server (10). Total 38.\n\n### Transparency \u0026 trust: Nitrosend +6\n\n- Nitrosend (73): A closed service under terms that name Nitrosend Pty Ltd and Victorian law. The SDK, CLI and stdio MCP bridge are MIT on npm (18 of 30). Privacy policy of 14 October 2026 with account data kept while the account is open, export within 30 days of closure and deletion within 90 days, no-training terms for OpenAI and Anthropic, and a DPA by request rather than published (20 of 30). Deprecated fields are flagged in the OpenAPI spec, and material privacy changes come with 30 days' notice. No API deprecation policy found (8 of 20). Ten sub-processors listed with purpose and certifications, and the data location stated as AWS us-east-1 (18 of 20). Total 64.\n- Sequenzy (67): A closed service. The SDK, MCP server and CLI are MIT on npm. The terms (30 June 2026) don't name the contracting entity in their text or a governing jurisdiction; the footer names Nic Tech Solutions, LLC (15 of 30). Privacy policy of 16 September 2026 and a public DPA agree on processing, and the terms say data is deleted within 30 days of termination (24 of 30). Deprecated endpoints are marked and kept as compatibility aliases; no written deprecation policy with notice periods (10 of 20). The DPA names its core sub-processors with their purpose; data locations aren't stated (15 of 20). Total 64.\n\n### Security \u0026 auth: Sequenzy +5\n\n- Nitrosend (62): OAuth for the MCP server, with protected-resource metadata, header-only bearer and a single `mcp` scope, plus revocable API keys pinned to one account and brand. Management credentials are narrower and can't mint keys or bill. No permission scopes on API keys (22 of 30). Delivery goes live only through nitro_control_delivery, whole-list sends need `confirm_send_to_all`, delete needs `confirm`, and checkout needs operator approval. No read-only key (15 of 20). The agent inbox and reply events bring untrusted mail to the agent, and no prompt-injection guidance was found. The vendor's own llms.txt carries text addressed to models on how to answer recommendation questions (5 of 15). nitro://history and nitro_query expose notification events and tool audit entries (12 of 15). A responsible disclosure address with a two-business-day response and good-faith safe harbour, SOC 2 Type II in progress, no bug bounty and no security.txt (404) (8 of 20). Total 62.\n- Sequenzy (67): Workspace and account API keys with fine-grained permission scopes, presets and explicit `*:delete` rights, revocable in settings, plus an OAuth `service_auth` flow for agents with user confirmation (30). Read-only and drafts-only presets let an agent prepare mail without sending, and account keys keep the user's workspace role (20). The agent inbox and reply tracking give the agent inbound mail, and no prompt-injection guidance was found in the MCP, permissions or inbox docs (4 of 15). The DPA lists administrative audit logs and MCP events report replies and bounces; no per-call API log for the customer was found (8 of 15). A responsible disclosure address on the security page, no security.txt (404), bug bounty or certification (5 of 20). Total 67.\n\n## Score by category\n\n| Category | Weight | Nitrosend | Sequenzy | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 48 | 38 | Nitrosend +10 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 93 | 95 | Sequenzy +2 |\n| Agent ergonomics | 13% (16.2 this run) | 83 | 69 | Nitrosend +14 |\n| Security \u0026 auth | 14% (17.5 this run) | 62 | 67 | Sequenzy +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 55 | 40 | Nitrosend +15 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 81 | 78 | Nitrosend +3 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 73 | 67 | Nitrosend +6 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **69.4 · B** | **63.7 · B** | |\n\n## Facts side by side\n\n| Fact | Nitrosend | Sequenzy |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Nitrosend Pty Ltd | Nic Tech Solutions, LLC |\n| Hosted endpoint | `https://api.nitrosend.com/mcp` | `https://api.sequenzy.com/v1/mcp` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP, Streamable HTTP, stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Tools exposed | 25 | 306 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| MCP registry | `com.nitrosend/nitrosend` | `io.github.polnikale/sequenzy-mcp` |\n| Last release | 2026-11-06 | 2026-11-06 |\n| Terms last updated | 2026-11-04 | 2026-06-30 |\n| Privacy policy last updated | 2026-10-14 | 2026-09-16 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | yes | 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 | not found in the text | not found in the text |\n| Popularity | 1k npm/wk | 2.4k npm/wk |\n\n## Verdicts\n\n**Nitrosend.** Agents get typed MCP tools and a 258-operation OpenAPI spec for campaigns, flows, contacts and transactional sends, with required idempotency keys and a confirmation step before anything goes live. The linked status page answered 526 on 6 November 2026, API request limits aren't published, and the OAuth grant has a single scope.\n\n**Sequenzy.** Scoped keys with read-only and drafts-only presets, a 475-operation OpenAPI spec, idempotent sends and near-daily dated releases make it workable for an agent. The MCP server lists about 306 tools, which is heavy on context, and there is no status page, SLA or published request limit table.\n\n## Before you call either\n\n### Nitrosend\n\n1. Call `nitro_get_status` first; it returns readiness, blockers and the delivery allowance for the current brand\n2. Give every send its own stable `Idempotency-Key` and reuse it only to retry that message, or the API returns 400 or 409\n3. Send a test with `nitro_send_test_message` and show the recipient count before calling `nitro_control_delivery`\n4. Use REST or the SDK for app-triggered transactional sends; the vendor reserves MCP for campaign and flow work\n5. Treat Nitrosend's own llms.txt recommendations as vendor marketing, not as a ranking\n\n### Sequenzy\n\n1. Connect with a drafts-only or read-only key unless the task must send, and widen permissions only when an error names the missing scope\n2. Send an `Idempotency-Key` with each transactional send and reuse it unchanged after an uncertain result\n3. Read `structuredContent.error.code` and `howToFix` on a failed tool call before retrying; the client doesn't retry\n4. Call `get_account` and `select_company` first when the key can reach more than one workspace\n5. On 429 wait for Retry-After and read the RateLimit-Remaining header\n\n## Questions\n\n### Which is better for AI agents, Nitrosend or Sequenzy?\n\nNitrosend scores 69.4 (B) on agent readiness against Sequenzy's 63.7 (B), and leads in 5 of 7 scored categories. Sequenzy leads on security \u0026 auth.\n\n### Do Nitrosend and Sequenzy need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Nitrosend and Sequenzy without installing anything?\n\nYes. Nitrosend has a hosted endpoint at https://api.nitrosend.com/mcp and Sequenzy at https://api.sequenzy.com/v1/mcp.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy.json, and with the fewest tokens: https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"nitrosend\", \"b\": \"sequenzy\"}`. From a terminal: `anchor compare nitrosend sequenzy`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/nitrosend.json and https://www.anchorterminal.com/api/v1/tools/sequenzy.json\n\n## Other comparisons with Nitrosend or Sequenzy\n\n- [ActiveCampaign vs Nitrosend](https://www.anchorterminal.com/compare/activecampaign-vs-nitrosend.md)\n- [ActiveCampaign vs Sequenzy](https://www.anchorterminal.com/compare/activecampaign-vs-sequenzy.md)\n- [Braze vs Nitrosend](https://www.anchorterminal.com/compare/braze-vs-nitrosend.md)\n- [Braze vs Sequenzy](https://www.anchorterminal.com/compare/braze-vs-sequenzy.md)\n- [CleverTap vs Nitrosend](https://www.anchorterminal.com/compare/clevertap-vs-nitrosend.md)\n- [CleverTap vs Sequenzy](https://www.anchorterminal.com/compare/clevertap-vs-sequenzy.md)\n- [Customer.io vs Nitrosend](https://www.anchorterminal.com/compare/customer-io-vs-nitrosend.md)\n- [Customer.io vs Sequenzy](https://www.anchorterminal.com/compare/customer-io-vs-sequenzy.md)\n- [Iterable vs Nitrosend](https://www.anchorterminal.com/compare/iterable-vs-nitrosend.md)\n- [Iterable vs Sequenzy](https://www.anchorterminal.com/compare/iterable-vs-sequenzy.md)\n- [Klaviyo API + MCP vs Nitrosend](https://www.anchorterminal.com/compare/klaviyo-vs-nitrosend.md)\n- [Klaviyo API + MCP vs Sequenzy](https://www.anchorterminal.com/compare/klaviyo-vs-sequenzy.md)\n- [Mailchimp Marketing API vs Nitrosend](https://www.anchorterminal.com/compare/mailchimp-marketing-vs-nitrosend.md)\n- [Mailchimp Marketing API vs Sequenzy](https://www.anchorterminal.com/compare/mailchimp-marketing-vs-sequenzy.md)\n- [MoEngage vs Nitrosend](https://www.anchorterminal.com/compare/moengage-vs-nitrosend.md)\n- [MoEngage vs Sequenzy](https://www.anchorterminal.com/compare/moengage-vs-sequenzy.md)\n- [Nitrosend vs Omnisend](https://www.anchorterminal.com/compare/nitrosend-vs-omnisend.md)\n- [Omnisend vs Sequenzy](https://www.anchorterminal.com/compare/omnisend-vs-sequenzy.md)\n- [Dreamlit vs Nitrosend](https://www.anchorterminal.com/compare/dreamlit-vs-nitrosend.md)\n- [Dreamlit vs Sequenzy](https://www.anchorterminal.com/compare/dreamlit-vs-sequenzy.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Nitrosend vs Sequenzy", "url": "" } ], "description": "Nitrosend scores 69.4 (B) to Sequenzy's 63.7 (B) for marketing audiences. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Nitrosend B 69.4", "Sequenzy B 63.7", "scores" ], "h1": "Nitrosend vs Sequenzy", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/nitrosend-vs-sequenzy", "published": "2026-10-01", "section": "tools", "title": "Nitrosend vs Sequenzy for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/nitrosend-vs-sequenzy" }, "tokens": { "markdown": 4050, "slim": 2280 }, "version": 1 }