{ "data": { "a": { "slug": "apollo", "name": "Apollo API + MCP", "vendor": "Apollo.io", "vendorUrl": "https://www.apollo.io", "kind": "http-api", "category": "lead-data", "summary": "People and company search over Apollo's database of about 240 million contacts and 30 million companies, person and company enrichment with email and mobile reveal, and the Apollo CRM and sequence objects.", "url": "https://www.anchorterminal.com/tools/apollo", "markdownUrl": "https://www.anchorterminal.com/tools/apollo.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/apollo.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/apollo.json", "dns": "apollo.grade.anchorterminal.com", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.apollo.io/api/v1", "packages": [], "auth": "mixed", "authNotes": "REST uses the `x-api-key` header. Keys can be limited to chosen endpoints, and a master key reaches everything. Partners use OAuth 2.0. The hosted MCP at mcp.apollo.io uses OAuth, and headless clients send a master key in `X-Api-Key`. Calls act as the workspace's longest-standing active admin, whoever made the key.", "pricing": "freemium", "pricingNotes": "Free plan, then Basic and Professional, with Custom for larger teams. The pricing page's structured data gives Basic $49 and Professional $99 a user a month and Enterprise by quote; the plan table renders client-side and no longer names an Organization plan. People search costs 0 credits. Person enrichment is 1 credit for email and demographics plus 8 for a mobile number, and waterfall lookups through third-party vendors can reach 20 or more credits for an email and 45 or more for a phone. Company enrichment is 1 credit per company, company search 1 credit per page of up to 100. The pricing FAQ says API access for custom integrations is on Custom plans, while the API docs list rate limits for the Free through Organization plans (https://www.apollo.io/pricing, checked 2026-11-02).", "priceSummary": "$49 / seat-mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 mention in the API docs, MCP docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 25, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.apollo.io", "llmsTxt": "https://docs.apollo.io/llms.txt", "openapi": "https://docs.apollo.io/openapi/apollo-rest-api.json", "registryName": "io.github.apolloio/apollo-mcp", "capabilities": [ "lead.search", "lead.enrichment", "email.finder", "data.company", "data.person" ], "tags": [ "lead-search", "enrichment", "hosted", "freemium", "mcp", "llms-txt", "openapi", "webhooks", "closed-source" ], "graded": true, "anchor": { "graded": true, "score": 65.4, "grade": "B", "agentReady": false, "rank": 421, "ranked": true, "rankOf": 1486, "categoryRank": 2, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 58, "payments": 30, "reliability": 75, "schema": 87, "security": 60, "transparency": 73 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-02" }, "negative": 0, "verdict": "People search costs 0 credits, up to 100 records a page and 50,000 a query, and errors carry stable codes with fix suggestions. Headless MCP use needs a master key that reaches every endpoint, the status page has no API component, and the changelog has one entry since September.", "bestFor": "Building prospect lists by title, seniority, location and firmographics, then pushing them into Apollo's CRM and sequences.", "strengths": [ "People search costs 0 credits, up to 100 records a page and 50,000 a query", "`error_details` carries a stable code, ordered fix suggestions and `retry_after_seconds`", "Scoped API keys limited to chosen endpoints, with regenerate and delete", "ISO 27001 and SOC 2 Type 2, with a public subprocessor list in the trust centre", "Listed in the official MCP registry under io.github.apolloio" ], "weaknesses": [ "Headless MCP use needs a master key that reaches every endpoint", "MCP write actions include sending email, sequence enrolment and buying domains, with no read-only mode", "Status page has no API or MCP component, so API outages may not show", "Pricing FAQ says API access is on Custom plans, while the API docs list limits for Free through the Organization plan", "One changelog entry, dated 18 September 2026, and no SLA found" ], "agentNotes": [ "Search people first at 0 credits, then enrich only the people you'll contact", "Branch on `error_details.code` and wait `retry_after_seconds` from the suggestions after a 429", "Limits are per team, so read the `x-minute-usage` and remaining headers before a bulk run", "Use a scoped key with only the endpoints the job needs. A master key reaches everything", "Get a person's approval before adding contacts to a sequence, since enrolment can start sending" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 65.4 } ], "editorialScores": { "ergonomics": 65, "maintenance": 58, "payments": 30, "reliability": 75, "schema": 87, "security": 60, "transparency": 64 }, "provenanceScore": 82, "checked": { "categories": { "ergonomics": "2026-11-02", "maintenance": "2026-11-02", "payments": "2026-11-02", "reliability": "2026-11-02", "schema": "2026-11-02", "security": "2026-11-02", "transparency": "2026-11-02" }, "last": "2026-11-02", "lastMoved": "2026-11-02", "oldest": "2026-11-02", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl -X POST https://api.apollo.io/api/v1/mixed_people/api_search -H \"x-api-key: $APOLLO_API_KEY\" \\\n -H \"Content-Type: application/json\" -d '{\"person_titles\":[\"head of sales\"],\"per_page\":5}'", "claudeCode": "claude mcp add --transport http apollo https://mcp.apollo.io/mcp" }, "letme": { "capability": "https://letme.dev/lead.search", "tool": "https://letme.dev/apollo" }, "area": "web-data", "unitPrices": [ { "item": "Basic plan", "unit": "seat-month", "usd": 49, "note": "per the pricing page's structured data, billing period not shown in the client-rendered table" }, { "item": "Professional plan", "unit": "seat-month", "usd": 99, "note": "per the pricing page's structured data, billing period not shown in the client-rendered table" } ], "provenance": { "legalEntity": "ZenLeads Inc. d/b/a Apollo.io", "domain": "apollo.io", "domainRegistered": "2018-01-09", "endpointOnVendorDomain": true, "terms": "https://www.apollo.io/terms", "privacy": "https://www.apollo.io/privacy-policy", "statusPage": "https://status.apollo.io", "changelog": "https://docs.apollo.io/changelog", "securityTxt": "none", "checked": "2026-09-30", "notes": [ "Plan prices come from the pricing page's structured data and third-party reports. The plan table itself renders client-side" ], "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/apollo.json", "live": { "slug": "apollo", "probe": { "target": "https://api.apollo.io/api/v1", "method": "get", "lastAt": "2026-11-07T18:20:10.683597775Z", "lastOk": true, "lastStatus": 404, "lastMs": 386, "authRequired": false, "uptime24h": 100, "uptime30d": 99.99, "p50ms24h": 345, "p95ms24h": 432, "samples24h": 239, "samples30d": 7910, "days": [ { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 247 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 251 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 248, "ok": 248 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.apollo.io", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-07T04:47:06.589467991Z" }, "versions": [ { "registry": "mcp-registry", "name": "io.github.apolloio/apollo-mcp", "version": "0.1.1", "seenAt": "2026-11-07T18:16:28.95801333Z" } ], "securityTxt": { "url": "https://apollo.io/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:00:21.645728529Z" }, "llmsTxt": { "url": "https://docs.apollo.io/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:31:34.260714476Z" }, "domain": { "domain": "apollo.io", "checkedAt": "2026-11-01T14:17:10.653640034Z" }, "pages": [ { "url": "https://docs.apollo.io/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:05:03.25493711Z", "changedAt": "2026-10-13T20:14:01.038405298Z", "fingerprint": "6c59f8e1ad43" }, { "url": "https://docs.apollo.io/openapi/apollo-rest-api.json", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:05:05.831678421Z", "changedAt": "0001-01-01T00:00:00Z" }, { "url": "https://www.apollo.io/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:24:50.382490001Z", "changedAt": "2026-10-27T03:57:56.64987277Z", "fingerprint": "07c118d3b531" }, { "url": "https://www.apollo.io/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:24:52.736292648Z", "changedAt": "2026-10-27T03:57:58.802905383Z", "fingerprint": "56fccb91a3da" }, { "url": "https://www.apollo.io/terms", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:24:54.720079437Z", "changedAt": "2026-10-27T03:58:00.826287257Z", "fingerprint": "eb11dc6e4dc8" } ], "mcpTools": { "url": "https://mcp.apollo.io/mcp", "checkedAt": "2026-11-07T01:42:29.509143278Z", "status": "auth", "note": "asks for credentials before listing its tools", "changedAt": "2026-11-07T01:42:29.509143278Z" }, "updatedAt": "2026-11-07T18:20:10.683597775Z" } }, "answer": "Apollo API + MCP scores 65.4 (B) on agent readiness against ZeroBounce's 62.4 (B), and leads in 2 of 7 scored categories. ZeroBounce leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.", "b": { "slug": "zerobounce", "name": "ZeroBounce", "vendor": "Hertza L.L.C. (ZeroBounce)", "vendorUrl": "https://www.zerobounce.net", "kind": "http-api", "category": "lead-data", "summary": "ZeroBounce is an email verification API from Hertza L.L.C. that checks single addresses and lists for deliverability, with status and sub-status codes, plus AI scoring, email finder, domain search and activity data, and an open-source MCP server.", "url": "https://www.anchorterminal.com/tools/zerobounce", "markdownUrl": "https://www.anchorterminal.com/tools/zerobounce.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/zerobounce.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/zerobounce.json", "dns": "zerobounce.grade.anchorterminal.com", "repo": "https://github.com/zerobounce", "license": "Proprietary service under ZeroBounce's terms of use; SDKs and the MCP server are open source", "transports": [ "http", "stdio" ], "remoteUrl": "https://api.zerobounce.net/v2", "packages": [ { "registry": "npm", "name": "@zerobounce/zero-bounce-sdk" } ], "auth": "api-key", "authNotes": "API key from the dashboard, sent as the `api_key` query parameter in the documented calls. Several keys per account besides a Master key; keys can be named, switched off, regenerated, deleted and limited to whitelisted IPs or ranges. No endpoint scopes found.", "pricing": "usage", "pricingNotes": "Pay as you go from $39 for 2,000 validations, one credit per email, 20 per successful Email Finder query, nothing for unknown results. ZeroBounce ONE from $99 a month, minimum 10,000 credits. Freemium of 100 validations a month for business or premium domains. Credits bought after 1 June 2026 expire two years after the last purchase (https://www.zerobounce.net/pricing, https://www.zerobounce.net/terms-of-use, checked 2026-11-06).", "priceSummary": "$0.0195 / call", "where": "both", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs, pricing or MCP page (checked 2026-11-06).", "endpoints": [] }, "toolCount": 0, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://www.zerobounce.net/docs/", "llmsTxt": "https://www.zerobounce.net/llms.txt", "capabilities": [ "email.verification", "email.finder", "lead.enrichment" ], "tags": [ "hosted", "mcp", "status-page", "soc2", "iso27001", "free-tier", "usage-based", "typescript", "eu-region", "closed-source" ], "lastRelease": "2026-10-25", "graded": true, "anchor": { "graded": true, "score": 62.4, "grade": "B", "agentReady": false, "rank": 559, "ranked": true, "rankOf": 1486, "categoryRank": 4, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 69, "maintenance": 70, "payments": 35, "reliability": 75, "schema": 54, "security": 65, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "ZeroBounce's v2 API verifies emails with detailed status and sub-status codes, publishes per-endpoint limits, a Statuspage with short incidents only in the last 90 days, SOC 2 Type 2 and ISO 27001, and $0.0195 per email at the smallest pack. The documented key travels in the query string, and there is no OpenAPI contract.", "bestFor": "Email verification before outreach, the verification-first listing in lead-data.", "strengths": [ "Status and sub-status codes per address, and unknown results don't use credits", "Statuspage with API, API-US, API-EU and Bulk API components; three short incidents in the 90 days to 6 November 2026", "Rate limits published per endpoint group, with the block length for each", "SOC 2 Type 2, ISO/IEC 27001:2022, Intigriti testing and a published sub-processor list", "Freemium of 100 validations a month for business domains, and pay-as-you-go from $39 for 2,000" ], "weaknesses": [ "Every documented example sends the key as an `api_key` query parameter", "No OpenAPI or other machine-readable contract; a Postman collection only", "Going over a limit blocks the key for a minute to a day, with no Retry-After documented", "llms.txt lists marketing pages, not the API docs", "Keys can be IP-whitelisted but not scoped to endpoints" ], "agentNotes": [ "Use the regional host (api-us or api-eu) that matches the data, and test with the sandbox addresses, which spend no credits", "Set `timeout` (3 to 60 seconds); slow mail servers return unknown, which is free to retry later", "Stay under 80,000 validations per 10 seconds and avoid repeated bad requests, which block the key for an hour", "Use the bulk file API for large lists instead of looping on /v2/validate", "Keep the key out of logs; the API takes it only as `api_key` in the URL" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 62.4 } ], "editorialScores": { "ergonomics": 69, "maintenance": 70, "payments": 35, "reliability": 75, "schema": 54, "security": 65, "transparency": 59 }, "provenanceScore": 67, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl \"https://api.zerobounce.net/v2/validate?api_key=$ZEROBOUNCE_API_KEY\u0026email=valid@example.com\"" }, "letme": { "capability": "https://letme.dev/email.verification", "tool": "https://letme.dev/zerobounce" }, "area": "web-data", "unitPrices": [ { "item": "Email validation, smallest pay-as-you-go pack", "unit": "call", "usd": 0.0195, "note": "$39 for 2,000 validations" }, { "item": "ZeroBounce ONE", "unit": "month", "usd": 99, "note": "From $99 a month" } ], "provenance": { "legalEntity": "Hertza L.L.C.", "domain": "zerobounce.net", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://www.zerobounce.net/terms-of-use", "privacy": "https://www.zerobounce.net/privacy-policy", "statusPage": "https://status.zerobounce.net", "changelog": "", "securityTxt": "unknown", "checked": "2026-11-06", "notes": [ "Terms of use name Hertza L.L.C., doing business as ZeroBounce, a Nevada LLC, under Nevada law; the terms take effect on the date accepted. Privacy policy last updated 30 June 2026.", "www.zerobounce.net/robots.txt allows all and names ClaudeBot as allowed. status.zerobounce.net disallows /api/ and /embed/; its history was read from history.rss.", "No public changelog for the API was found.", "security.txt was not checked." ], "score": 67 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/zerobounce.json", "live": { "slug": "zerobounce", "probe": { "target": "https://api.zerobounce.net/v2", "method": "get", "lastAt": "2026-11-07T18:21:07.244618017Z", "lastOk": true, "lastStatus": 404, "lastMs": 126, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 69, "p95ms24h": 170, "samples24h": 200, "samples30d": 200, "days": [ { "date": "2026-11-06", "probes": 13, "ok": 13 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.zerobounce.net", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:22:13.130992469Z" }, "versions": [ { "registry": "npm", "name": "@zerobounce/zero-bounce-sdk", "version": "3.0.0", "seenAt": "2026-11-07T00:19:09.899173295Z" } ], "npmWeekly": 36734, "securityTxt": { "url": "https://zerobounce.net/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T15:59:52.305113224Z" }, "llmsTxt": { "url": "https://www.zerobounce.net/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:34:27.000344109Z" }, "pages": [ { "url": "https://www.zerobounce.net/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:37:41.302855774Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "6cbf992fb3f3" }, { "url": "https://www.zerobounce.net/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:37:45.799553831Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "6267cfec1592" }, { "url": "https://www.zerobounce.net/terms-of-use", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:37:45.965675933Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "08727e5bbf09" } ], "updatedAt": "2026-11-07T18:22:13.130992469Z" } }, "edges": [ { "by": 33, "category": "schema", "leads": "apollo", "name": "Schema \u0026 documentation", "reasons": { "a": "OpenAPI 3.1.0 file at docs.apollo.io/openapi/apollo-rest-api.json with 83 operations on 77 paths, last modified 30 October 2026 (25). llms.txt with 107 links in 16 sections and Markdown twins of every page (10). Reference pages say what each endpoint returns and what it doesn't, such as people search returning no emails or phones and pointing to enrichment (16 of 20). Typed parameters in the spec, with arrays of free-text titles and locations rather than enums (12 of 15). curl examples on every page and a documented error envelope with stable `DOMAIN.CATEGORY.REASON` codes and remediation suggestions (14 of 15). Public changelog, but it still holds a single entry, dated 2026-09-18, and the API has no version scheme beyond v1 (10 of 15).", "b": "No OpenAPI or other machine-readable contract found; a Postman collection is linked (5 of 25). llms.txt lists marketing pages, and the docs have no Markdown twins (5 of 10). Endpoint pages explain timing, credits and when to use batch or file APIs (14 of 20). Parameter tables and listed status and sub-status values, including the ai_agent_mailbox sub-status added in July 2026 (10 of 15). Examples per endpoint, a sandbox and an error-code page (12 of 15). v2 paths, an API migration page and dated maintenance notices on the status page, with no API changelog (8 of 15). 5+5+14+10+12+8 = 54." }, "scores": { "a": 87, "b": 54 } }, { "by": 12, "category": "maintenance", "leads": "zerobounce", "name": "Maintenance \u0026 community", "reasons": { "a": "Newest dated release is Apollo CLI v2.2.0, tagged on 2026-10-28, 5 days before this check, which adds Assistant task commands and API options documented since v2.0.0 (30). The API changelog's only entry, structured API errors, is dated 2026-09-18. In the last 90 days that entry and the CLI tag (counted half) make 1.5 dated changes, short of three. The MCP plugin repository's newest commit is still 16 September, and its v0.1.1 tag and the registry entries are unchanged since July (0). Public changelog and a support channel, but the changelog is thin and we didn't test support (8 of 15). Listed in the official MCP registry as io.github.apolloio/apollo-mcp, a GitHub-verified namespace, version 0.1.1 published 2026-07-20 (15). No SDK packages to judge. The plugin repository has a registry publish workflow (5 of 10).", "b": "Closed service. The JavaScript SDK 3.0.0 was published on 25 October 2026 (30). No API changelog; the dated changes found in 90 days are that release and status-page notices, fewer than three releases (10 of 20). Support by email and 24/7 chat per the docs, a public status page; replies not tested (10 of 15). Official SDKs in many languages and an MCP server (15). Package health not checked (5 of 10). 30+10+10+15+5 = 70." }, "scores": { "a": 58, "b": 70 } }, { "by": 10, "category": "transparency", "leads": "apollo", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed service with published terms naming ZenLeads Inc. d/b/a Apollo.io. The MCP plugin repo is MIT (15). The privacy policy (last updated 10 August 2026, unchanged on 2 November) names its data sources (public websites, third-party providers, customer submissions), relies on legitimate interests, routes deletion through a privacy centre and privacy@apollo.io, and links a DPA. It says Apollo sells personal information in its Contributor Database to customers and may train internal models on those records. Retention is 'consistent with the purposes', with no periods (22 of 30). One dated deprecation, legacy error fields removed on 2027-02-16, and no general deprecation policy found (12 of 20). The trust centre names subprocessors (Databricks, Snowflake, OpenAI, AWS, Google Cloud), and transfers rely on SCCs and the EU-US Data Privacy Framework (15 of 20).", "b": "Closed service under terms naming Hertza L.L.C. (ZeroBounce) of Nevada; SDKs and MCP server open source (15 of 30). The data protection page says uploaded data is never kept more than 30 days, the privacy policy of 30 June 2026 keeps account data 'as long as needed', and EU and UK DPAs are published (22 of 30). An API migration page, with no dated deprecation policy (6 of 20). A sub-processor list naming each provider and the data exchanged (16 of 20). 15+22+6+16 = 59." }, "scores": { "a": 73, "b": 63 } }, { "by": 5, "category": "security", "leads": "zerobounce", "name": "Security \u0026 auth", "reasons": { "a": "Keys sent in the `x-api-key` header. Scoped keys are the default and are limited to chosen endpoints (403 elsewhere), and keys can be regenerated or deleted. OAuth for the MCP in chat clients. Headless MCP use needs a master key that reaches every endpoint (25 of 30). Scoped keys give least privilege on REST. The MCP has 13 write actions, including sending one-off emails, adding contacts to sequences and buying domains and mailboxes, with no read-only mode, and approval is left to the client (10 of 20). Results include third-party-sourced profile text, emails and call transcripts, and we found no prompt-injection guidance (3 of 15). Usage stats endpoint, rate-limit usage headers, and audit logging listed in the trust centre (8 of 15). ISO 27001 and SOC 2 Type 2 per the SafeBase trust centre, disclosure by email to security@apollo.io, no bug bounty found, no security.txt (14 of 20).", "b": "Several named keys besides a Master key, regeneration, deactivation and IP whitelists (25), less 10 because the documented calls carry the key in the `api_key` query string (15 of 30). Validation only reads, though file and list endpoints can delete uploads (12 of 20). Results are structured status codes with little free text (10 of 15). API usage and dashboard statistics endpoints (10 of 15). SOC 2 Type 2, ISO/IEC 27001:2022, continuous testing with Intigriti and penetration testing with BitSentinel; no public disclosure policy found (18 of 20). 15+12+10+10+18 = 65." }, "scores": { "a": 60, "b": 65 } }, { "by": 5, "category": "payments", "leads": "zerobounce", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). Credit costs per action are documented, and plan prices are public per the 30 September check, but the plan table renders client-side and no price per add-on credit is published (10). Free plan with API rate limits listed in the docs. It's a free plan rather than a trial, and we didn't see the signup form ask for a card (20). A person signs up in a browser with a work email (0).", "b": "No x402, MPP or L402 (0). Per-credit prices public, from $39 for 2,000 validations (20). Freemium of 100 validations a month for business or premium domains; a card requirement isn't stated, and free webmail addresses don't qualify (15 of 20). A person signs up in a browser (0). 0+20+15+0 = 35." }, "scores": { "a": 30, "b": 35 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Apollo.io", "b": "Hertza L.L.C. (ZeroBounce)", "name": "Vendor" }, { "a": "https://api.apollo.io/api/v1", "b": "https://api.zerobounce.net/v2", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP, stdio", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service under ZeroBounce's terms of use; SDKs and the MCP server are open source", "name": "Licence" }, { "a": "none", "b": "0", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "io.github.apolloio/apollo-mcp", "b": "not listed", "name": "MCP registry" }, { "a": "none", "b": "2026-10-25", "name": "Last release" }, { "a": "2026-08-10", "b": "2026-05-05", "name": "Terms last updated" }, { "a": "2026-08-10", "b": "2026-06-30", "name": "Privacy policy last updated" }, { "a": "yes", "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": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "25 stars", "b": "none", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Apollo API + MCP scores 65.4 (B) on agent readiness against ZeroBounce's 62.4 (B), and leads in 2 of 7 scored categories. ZeroBounce leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Apollo API + MCP or ZeroBounce?" }, { "answer": "Apollo API + MCP takes an API key or an OAuth sign-in. ZeroBounce needs an API key.", "question": "Do Apollo API + MCP and ZeroBounce need an API key?" }, { "answer": "Yes. Apollo API + MCP has a hosted endpoint at https://api.apollo.io/api/v1 and ZeroBounce at https://api.zerobounce.net/v2.", "question": "Can an agent call Apollo API + MCP and ZeroBounce without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Schema \u0026 documentation, 87 against 54", "Transparency \u0026 trust, 73 against 63" ], "also": null, "goodFor": "Building prospect lists by title, seniority, location and firmographics, then pushing them into Apollo's CRM and sequences.", "slug": "apollo", "watchFor": "Headless MCP use needs a master key that reaches every endpoint" }, { "aheadOn": [ "Security \u0026 auth, 65 against 60", "Payments \u0026 pricing, 35 against 30", "Maintenance \u0026 community, 70 against 58" ], "also": [ "Runs on your own machine" ], "goodFor": "Email verification before outreach, the verification-first listing in lead-data.", "slug": "zerobounce", "watchFor": "Every documented example sends the key as an `api_key` query parameter" } ], "history": { "apollo": [ { "causes": [ "reliability" ], "date": "2026-11-02", "delta": 2, "from": 63.4, "fromGrade": "B", "to": 65.4, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 63.3, "fromGrade": "B", "to": 63.4, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.3, "from": 63.6, "fromGrade": "B", "to": 63.3, "toGrade": "B" } ], "zerobounce": null }, "job": { "capability": "lead.enrichment", "name": "Lead enrichment" }, "others": [ { "json": "https://www.anchorterminal.com/compare/apollo-vs-clay.json", "title": "Apollo API + MCP vs Clay", "url": "https://www.anchorterminal.com/compare/apollo-vs-clay" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-coresignal.json", "title": "Apollo API + MCP vs Coresignal API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-coresignal" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-crustdata.json", "title": "Apollo API + MCP vs Crustdata API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-crustdata" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-databar.json", "title": "Apollo API + MCP vs Databar", "url": "https://www.anchorterminal.com/compare/apollo-vs-databar" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-dievio.json", "title": "Apollo API + MCP vs Dievio", "url": "https://www.anchorterminal.com/compare/apollo-vs-dievio" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-enrich-layer.json", "title": "Apollo API + MCP vs Enrich Layer API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-enrich-layer" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-explorium-agentsource.json", "title": "Apollo API + MCP vs Explorium AgentSource", "url": "https://www.anchorterminal.com/compare/apollo-vs-explorium-agentsource" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-fullenrich.json", "title": "Apollo API + MCP vs FullEnrich API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-fullenrich" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-fuse-mcp.json", "title": "Apollo API + MCP vs Fuse MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-fuse-mcp" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-gojiberry.json", "title": "Apollo API + MCP vs Gojiberry", "url": "https://www.anchorterminal.com/compare/apollo-vs-gojiberry" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-hunter.json", "title": "Apollo API + MCP vs Hunter API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-hunter" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-leadmagic.json", "title": "Apollo API + MCP vs LeadMagic API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-leadmagic" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-lusha.json", "title": "Apollo API + MCP vs Lusha API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-lusha" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-people-data-labs.json", "title": "Apollo API + MCP vs People Data Labs", "url": "https://www.anchorterminal.com/compare/apollo-vs-people-data-labs" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-prospeo.json", "title": "Apollo API + MCP vs Prospeo API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-prospeo" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-rocketreach.json", "title": "Apollo API + MCP vs RocketReach API", "url": "https://www.anchorterminal.com/compare/apollo-vs-rocketreach" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-zoominfo.json", "title": "Apollo API + MCP vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-clearbit.json", "title": "Apollo API + MCP vs Clearbit", "url": "https://www.anchorterminal.com/compare/apollo-vs-clearbit" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-dropcontact.json", "title": "Apollo API + MCP vs Dropcontact API + MCP", "url": "https://www.anchorterminal.com/compare/apollo-vs-dropcontact" }, { "json": "https://www.anchorterminal.com/compare/apollo-vs-fullcontact.json", "title": "Apollo API + MCP vs FullContact", "url": "https://www.anchorterminal.com/compare/apollo-vs-fullcontact" }, { "json": "https://www.anchorterminal.com/compare/clay-vs-zerobounce.json", "title": "Clay vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/clay-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/clearbit-vs-zerobounce.json", "title": "Clearbit vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/clearbit-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/coresignal-vs-zerobounce.json", "title": "Coresignal API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/coresignal-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/crustdata-vs-zerobounce.json", "title": "Crustdata API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/crustdata-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/databar-vs-zerobounce.json", "title": "Databar vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/databar-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/dievio-vs-zerobounce.json", "title": "Dievio vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/dievio-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/dropcontact-vs-zerobounce.json", "title": "Dropcontact API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/dropcontact-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/enrich-layer-vs-zerobounce.json", "title": "Enrich Layer API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/enrich-layer-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-zerobounce.json", "title": "Explorium AgentSource vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/explorium-agentsource-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/fullcontact-vs-zerobounce.json", "title": "FullContact vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/fullcontact-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/fullenrich-vs-zerobounce.json", "title": "FullEnrich API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/fullenrich-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/gojiberry-vs-zerobounce.json", "title": "Gojiberry vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/gojiberry-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/lusha-vs-zerobounce.json", "title": "Lusha API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/lusha-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/people-data-labs-vs-zerobounce.json", "title": "People Data Labs vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/people-data-labs-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/prospeo-vs-zerobounce.json", "title": "Prospeo API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/prospeo-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/zerobounce-vs-zoominfo.json", "title": "ZeroBounce vs ZoomInfo API + MCP", "url": "https://www.anchorterminal.com/compare/zerobounce-vs-zoominfo" }, { "json": "https://www.anchorterminal.com/compare/hunter-vs-zerobounce.json", "title": "Hunter API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/hunter-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/fuse-mcp-vs-zerobounce.json", "title": "Fuse MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/fuse-mcp-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/leadmagic-vs-zerobounce.json", "title": "LeadMagic API + MCP vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/leadmagic-vs-zerobounce" }, { "json": "https://www.anchorterminal.com/compare/rocketreach-vs-zerobounce.json", "title": "RocketReach API vs ZeroBounce", "url": "https://www.anchorterminal.com/compare/rocketreach-vs-zerobounce" } ], "panel": null, "scores": [ { "apollo": 75, "by": 0, "edge": "", "key": "reliability", "name": "Reliability", "weight": 16, "zerobounce": 75 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "apollo": 87, "by": 33, "edge": "apollo", "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "zerobounce": 54 }, { "apollo": 65, "by": 4, "edge": "zerobounce", "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "zerobounce": 69 }, { "apollo": 60, "by": 5, "edge": "zerobounce", "key": "security", "name": "Security \u0026 auth", "weight": 14, "zerobounce": 65 }, { "apollo": 30, "by": 5, "edge": "zerobounce", "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "zerobounce": 35 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "apollo": 58, "by": 12, "edge": "zerobounce", "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "zerobounce": 70 }, { "apollo": 73, "by": 10, "edge": "apollo", "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "zerobounce": 63 } ], "summary": "Apollo API + MCP scores 65.4 (B) on agent readiness against ZeroBounce's 62.4 (B), and leads in 2 of 7 scored categories. ZeroBounce leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community. Both do lead enrichment.", "tasks": null, "tutorials": [], "verdicts": { "apollo": "People search costs 0 credits, up to 100 records a page and 50,000 a query, and errors carry stable codes with fix suggestions. Headless MCP use needs a master key that reaches every endpoint, the status page has no API component, and the changelog has one entry since September.", "zerobounce": "ZeroBounce's v2 API verifies emails with detailed status and sub-status codes, publishes per-endpoint limits, a Statuspage with short incidents only in the last 90 days, SOC 2 Type 2 and ISO 27001, and $0.0195 per email at the smallest pack. The documented key travels in the query string, and there is no OpenAPI contract." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/apollo-vs-zerobounce", "json": "https://www.anchorterminal.com/compare/apollo-vs-zerobounce.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/apollo-vs-zerobounce.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/apollo-vs-zerobounce.min.md" }, "markdown": "Apollo API + MCP scores 65.4 (B) on agent readiness against ZeroBounce's 62.4 (B), and leads in 2 of 7 scored categories. ZeroBounce leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community. Both do lead enrichment.\n\n- Apollo API + MCP: grade B, 65.4/100, rank #421 of 1486. Markdown https://www.anchorterminal.com/tools/apollo.md · JSON https://www.anchorterminal.com/api/v1/tools/apollo.json\n- ZeroBounce: grade B, 62.4/100, rank #559 of 1486. Markdown https://www.anchorterminal.com/tools/zerobounce.md · JSON https://www.anchorterminal.com/api/v1/tools/zerobounce.json\n- Best lead, contact and company data APIs for AI agents: https://www.anchorterminal.com/best/lead-data/index.md\n- All 231 leads comparisons: https://www.anchorterminal.com/compare/lead-data/index.md\n\n## Which one, for what\n\n### Apollo API + MCP (B)\n\nGood for: Building prospect lists by title, seniority, location and firmographics, then pushing them into Apollo's CRM and sequences.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 54\n- Transparency \u0026 trust, 73 against 63\n\nWatch for: Headless MCP use needs a master key that reaches every endpoint\n\n### ZeroBounce (B)\n\nGood for: Email verification before outreach, the verification-first listing in lead-data.\n\nAhead on:\n- Security \u0026 auth, 65 against 60\n- Payments \u0026 pricing, 35 against 30\n- Maintenance \u0026 community, 70 against 58\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: Every documented example sends the key as an `api_key` query parameter\n\n\n## Why the edge\n\n### Schema \u0026 documentation: Apollo API + MCP +33\n\n- Apollo API + MCP (87): OpenAPI 3.1.0 file at docs.apollo.io/openapi/apollo-rest-api.json with 83 operations on 77 paths, last modified 30 October 2026 (25). llms.txt with 107 links in 16 sections and Markdown twins of every page (10). Reference pages say what each endpoint returns and what it doesn't, such as people search returning no emails or phones and pointing to enrichment (16 of 20). Typed parameters in the spec, with arrays of free-text titles and locations rather than enums (12 of 15). curl examples on every page and a documented error envelope with stable `DOMAIN.CATEGORY.REASON` codes and remediation suggestions (14 of 15). Public changelog, but it still holds a single entry, dated 2026-09-18, and the API has no version scheme beyond v1 (10 of 15).\n- ZeroBounce (54): No OpenAPI or other machine-readable contract found; a Postman collection is linked (5 of 25). llms.txt lists marketing pages, and the docs have no Markdown twins (5 of 10). Endpoint pages explain timing, credits and when to use batch or file APIs (14 of 20). Parameter tables and listed status and sub-status values, including the ai_agent_mailbox sub-status added in July 2026 (10 of 15). Examples per endpoint, a sandbox and an error-code page (12 of 15). v2 paths, an API migration page and dated maintenance notices on the status page, with no API changelog (8 of 15). 5+5+14+10+12+8 = 54.\n\n### Maintenance \u0026 community: ZeroBounce +12\n\n- Apollo API + MCP (58): Newest dated release is Apollo CLI v2.2.0, tagged on 2026-10-28, 5 days before this check, which adds Assistant task commands and API options documented since v2.0.0 (30). The API changelog's only entry, structured API errors, is dated 2026-09-18. In the last 90 days that entry and the CLI tag (counted half) make 1.5 dated changes, short of three. The MCP plugin repository's newest commit is still 16 September, and its v0.1.1 tag and the registry entries are unchanged since July (0). Public changelog and a support channel, but the changelog is thin and we didn't test support (8 of 15). Listed in the official MCP registry as io.github.apolloio/apollo-mcp, a GitHub-verified namespace, version 0.1.1 published 2026-07-20 (15). No SDK packages to judge. The plugin repository has a registry publish workflow (5 of 10).\n- ZeroBounce (70): Closed service. The JavaScript SDK 3.0.0 was published on 25 October 2026 (30). No API changelog; the dated changes found in 90 days are that release and status-page notices, fewer than three releases (10 of 20). Support by email and 24/7 chat per the docs, a public status page; replies not tested (10 of 15). Official SDKs in many languages and an MCP server (15). Package health not checked (5 of 10). 30+10+10+15+5 = 70.\n\n### Transparency \u0026 trust: Apollo API + MCP +10\n\n- Apollo API + MCP (73): Closed service with published terms naming ZenLeads Inc. d/b/a Apollo.io. The MCP plugin repo is MIT (15). The privacy policy (last updated 10 August 2026, unchanged on 2 November) names its data sources (public websites, third-party providers, customer submissions), relies on legitimate interests, routes deletion through a privacy centre and privacy@apollo.io, and links a DPA. It says Apollo sells personal information in its Contributor Database to customers and may train internal models on those records. Retention is 'consistent with the purposes', with no periods (22 of 30). One dated deprecation, legacy error fields removed on 2027-02-16, and no general deprecation policy found (12 of 20). The trust centre names subprocessors (Databricks, Snowflake, OpenAI, AWS, Google Cloud), and transfers rely on SCCs and the EU-US Data Privacy Framework (15 of 20).\n- ZeroBounce (63): Closed service under terms naming Hertza L.L.C. (ZeroBounce) of Nevada; SDKs and MCP server open source (15 of 30). The data protection page says uploaded data is never kept more than 30 days, the privacy policy of 30 June 2026 keeps account data 'as long as needed', and EU and UK DPAs are published (22 of 30). An API migration page, with no dated deprecation policy (6 of 20). A sub-processor list naming each provider and the data exchanged (16 of 20). 15+22+6+16 = 59.\n\n### Security \u0026 auth: ZeroBounce +5\n\n- Apollo API + MCP (60): Keys sent in the `x-api-key` header. Scoped keys are the default and are limited to chosen endpoints (403 elsewhere), and keys can be regenerated or deleted. OAuth for the MCP in chat clients. Headless MCP use needs a master key that reaches every endpoint (25 of 30). Scoped keys give least privilege on REST. The MCP has 13 write actions, including sending one-off emails, adding contacts to sequences and buying domains and mailboxes, with no read-only mode, and approval is left to the client (10 of 20). Results include third-party-sourced profile text, emails and call transcripts, and we found no prompt-injection guidance (3 of 15). Usage stats endpoint, rate-limit usage headers, and audit logging listed in the trust centre (8 of 15). ISO 27001 and SOC 2 Type 2 per the SafeBase trust centre, disclosure by email to security@apollo.io, no bug bounty found, no security.txt (14 of 20).\n- ZeroBounce (65): Several named keys besides a Master key, regeneration, deactivation and IP whitelists (25), less 10 because the documented calls carry the key in the `api_key` query string (15 of 30). Validation only reads, though file and list endpoints can delete uploads (12 of 20). Results are structured status codes with little free text (10 of 15). API usage and dashboard statistics endpoints (10 of 15). SOC 2 Type 2, ISO/IEC 27001:2022, continuous testing with Intigriti and penetration testing with BitSentinel; no public disclosure policy found (18 of 20). 15+12+10+10+18 = 65.\n\n### Payments \u0026 pricing: ZeroBounce +5\n\n- Apollo API + MCP (30): No x402, MPP or L402 (0). Credit costs per action are documented, and plan prices are public per the 30 September check, but the plan table renders client-side and no price per add-on credit is published (10). Free plan with API rate limits listed in the docs. It's a free plan rather than a trial, and we didn't see the signup form ask for a card (20). A person signs up in a browser with a work email (0).\n- ZeroBounce (35): No x402, MPP or L402 (0). Per-credit prices public, from $39 for 2,000 validations (20). Freemium of 100 validations a month for business or premium domains; a card requirement isn't stated, and free webmail addresses don't qualify (15 of 20). A person signs up in a browser (0). 0+20+15+0 = 35.\n\n## Score by category\n\n| Category | Weight | Apollo API + MCP | ZeroBounce | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 75 | 75 | even |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 87 | 54 | Apollo API + MCP +33 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 69 | ZeroBounce +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 60 | 65 | ZeroBounce +5 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 35 | ZeroBounce +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 58 | 70 | ZeroBounce +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 73 | 63 | Apollo API + MCP +10 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **65.4 · B** | **62.4 · B** | |\n\n## Facts side by side\n\n| Fact | Apollo API + MCP | ZeroBounce |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Apollo.io | Hertza L.L.C. (ZeroBounce) |\n| Hosted endpoint | `https://api.apollo.io/api/v1` | `https://api.zerobounce.net/v2` |\n| Transports | HTTP, Streamable HTTP | HTTP, stdio |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | none | Proprietary service under ZeroBounce's terms of use; SDKs and the MCP server are open source |\n| Tools exposed | none | 0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.github.apolloio/apollo-mcp` | not listed |\n| Last release | none | 2026-10-25 |\n| Terms last updated | 2026-08-10 | 2026-05-05 |\n| Privacy policy last updated | 2026-08-10 | 2026-06-30 |\n| Customer content may train models | yes | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 25 stars | none |\n| Agent reviews | 2.5/5 (2) | none |\n\n## How the scores have moved\n\n### Apollo API + MCP\n\n- +2.0 on 2 November 2026: reliability\n- +0.1 on 27 October 2026: checklist\n- -0.3 on 8 October 2026: checklist\n\n### ZeroBounce\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Apollo API + MCP.** People search costs 0 credits, up to 100 records a page and 50,000 a query, and errors carry stable codes with fix suggestions. Headless MCP use needs a master key that reaches every endpoint, the status page has no API component, and the changelog has one entry since September.\n\n**ZeroBounce.** ZeroBounce's v2 API verifies emails with detailed status and sub-status codes, publishes per-endpoint limits, a Statuspage with short incidents only in the last 90 days, SOC 2 Type 2 and ISO 27001, and $0.0195 per email at the smallest pack. The documented key travels in the query string, and there is no OpenAPI contract.\n\n## Before you call either\n\n### Apollo API + MCP\n\n1. Search people first at 0 credits, then enrich only the people you'll contact\n2. Branch on `error_details.code` and wait `retry_after_seconds` from the suggestions after a 429\n3. Limits are per team, so read the `x-minute-usage` and remaining headers before a bulk run\n4. Use a scoped key with only the endpoints the job needs. A master key reaches everything\n5. Get a person's approval before adding contacts to a sequence, since enrolment can start sending\n\n### ZeroBounce\n\n1. Use the regional host (api-us or api-eu) that matches the data, and test with the sandbox addresses, which spend no credits\n2. Set `timeout` (3 to 60 seconds); slow mail servers return unknown, which is free to retry later\n3. Stay under 80,000 validations per 10 seconds and avoid repeated bad requests, which block the key for an hour\n4. Use the bulk file API for large lists instead of looping on /v2/validate\n5. Keep the key out of logs; the API takes it only as `api_key` in the URL\n\n## Questions\n\n### Which is better for AI agents, Apollo API + MCP or ZeroBounce?\n\nApollo API + MCP scores 65.4 (B) on agent readiness against ZeroBounce's 62.4 (B), and leads in 2 of 7 scored categories. ZeroBounce leads on security \u0026 auth, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Apollo API + MCP and ZeroBounce need an API key?\n\nApollo API + MCP takes an API key or an OAuth sign-in. ZeroBounce needs an API key.\n\n### Can an agent call Apollo API + MCP and ZeroBounce without installing anything?\n\nYes. Apollo API + MCP has a hosted endpoint at https://api.apollo.io/api/v1 and ZeroBounce at https://api.zerobounce.net/v2.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/apollo-vs-zerobounce.json, and with the fewest tokens: https://www.anchorterminal.com/compare/apollo-vs-zerobounce.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"apollo\", \"b\": \"zerobounce\"}`. From a terminal: `anchor compare apollo zerobounce`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/apollo.json and https://www.anchorterminal.com/api/v1/tools/zerobounce.json\n\n## Other comparisons with Apollo API + MCP or ZeroBounce\n\n- [Apollo API + MCP vs Clay](https://www.anchorterminal.com/compare/apollo-vs-clay.md)\n- [Apollo API + MCP vs Coresignal API + MCP](https://www.anchorterminal.com/compare/apollo-vs-coresignal.md)\n- [Apollo API + MCP vs Crustdata API + MCP](https://www.anchorterminal.com/compare/apollo-vs-crustdata.md)\n- [Apollo API + MCP vs Databar](https://www.anchorterminal.com/compare/apollo-vs-databar.md)\n- [Apollo API + MCP vs Dievio](https://www.anchorterminal.com/compare/apollo-vs-dievio.md)\n- [Apollo API + MCP vs Enrich Layer API + MCP](https://www.anchorterminal.com/compare/apollo-vs-enrich-layer.md)\n- [Apollo API + MCP vs Explorium AgentSource](https://www.anchorterminal.com/compare/apollo-vs-explorium-agentsource.md)\n- [Apollo API + MCP vs FullEnrich API + MCP](https://www.anchorterminal.com/compare/apollo-vs-fullenrich.md)\n- [Apollo API + MCP vs Fuse MCP](https://www.anchorterminal.com/compare/apollo-vs-fuse-mcp.md)\n- [Apollo API + MCP vs Gojiberry](https://www.anchorterminal.com/compare/apollo-vs-gojiberry.md)\n- [Apollo API + MCP vs Hunter API + MCP](https://www.anchorterminal.com/compare/apollo-vs-hunter.md)\n- [Apollo API + MCP vs LeadMagic API + MCP](https://www.anchorterminal.com/compare/apollo-vs-leadmagic.md)\n- [Apollo API + MCP vs Lusha API + MCP](https://www.anchorterminal.com/compare/apollo-vs-lusha.md)\n- [Apollo API + MCP vs People Data Labs](https://www.anchorterminal.com/compare/apollo-vs-people-data-labs.md)\n- [Apollo API + MCP vs Prospeo API + MCP](https://www.anchorterminal.com/compare/apollo-vs-prospeo.md)\n- [Apollo API + MCP vs RocketReach API](https://www.anchorterminal.com/compare/apollo-vs-rocketreach.md)\n- [Apollo API + MCP vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/apollo-vs-zoominfo.md)\n- [Apollo API + MCP vs Clearbit](https://www.anchorterminal.com/compare/apollo-vs-clearbit.md)\n- [Apollo API + MCP vs Dropcontact API + MCP](https://www.anchorterminal.com/compare/apollo-vs-dropcontact.md)\n- [Apollo API + MCP vs FullContact](https://www.anchorterminal.com/compare/apollo-vs-fullcontact.md)\n- [Clay vs ZeroBounce](https://www.anchorterminal.com/compare/clay-vs-zerobounce.md)\n- [Clearbit vs ZeroBounce](https://www.anchorterminal.com/compare/clearbit-vs-zerobounce.md)\n- [Coresignal API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/coresignal-vs-zerobounce.md)\n- [Crustdata API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/crustdata-vs-zerobounce.md)\n- [Databar vs ZeroBounce](https://www.anchorterminal.com/compare/databar-vs-zerobounce.md)\n- [Dievio vs ZeroBounce](https://www.anchorterminal.com/compare/dievio-vs-zerobounce.md)\n- [Dropcontact API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/dropcontact-vs-zerobounce.md)\n- [Enrich Layer API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/enrich-layer-vs-zerobounce.md)\n- [Explorium AgentSource vs ZeroBounce](https://www.anchorterminal.com/compare/explorium-agentsource-vs-zerobounce.md)\n- [FullContact vs ZeroBounce](https://www.anchorterminal.com/compare/fullcontact-vs-zerobounce.md)\n- [FullEnrich API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/fullenrich-vs-zerobounce.md)\n- [Gojiberry vs ZeroBounce](https://www.anchorterminal.com/compare/gojiberry-vs-zerobounce.md)\n- [Lusha API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/lusha-vs-zerobounce.md)\n- [People Data Labs vs ZeroBounce](https://www.anchorterminal.com/compare/people-data-labs-vs-zerobounce.md)\n- [Prospeo API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/prospeo-vs-zerobounce.md)\n- [ZeroBounce vs ZoomInfo API + MCP](https://www.anchorterminal.com/compare/zerobounce-vs-zoominfo.md)\n- [Hunter API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/hunter-vs-zerobounce.md)\n- [Fuse MCP vs ZeroBounce](https://www.anchorterminal.com/compare/fuse-mcp-vs-zerobounce.md)\n- [LeadMagic API + MCP vs ZeroBounce](https://www.anchorterminal.com/compare/leadmagic-vs-zerobounce.md)\n- [RocketReach API vs ZeroBounce](https://www.anchorterminal.com/compare/rocketreach-vs-zerobounce.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": 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