{"passport":{"unfragile":{"@version":"1.0","version":"2026-05","artifact":{"id":"apollo-api","slug":"apollo-api","name":"Apollo API","type":"api","url":"https://www.apollo.io/api","page_url":"https://unfragile.ai/apollo-api","categories":["llm-apis"],"tags":[],"pricing":{"model":"free","free":true,"starting_price":null},"status":"active","verified":false},"capabilities":[{"id":"apollo-api__cap_0","uri":"capability://search.retrieval.contact.database.search.and.retrieval","name":"contact-database-search-and-retrieval","description":"Searches and retrieves contact records from Apollo's proprietary database of 275M+ verified contacts using multi-field filtering (name, email, company, title, location, industry, seniority level, technologies used). The API returns structured contact objects with enriched data including verified email addresses, phone numbers, LinkedIn profiles, and employment history. Search results are paginated and support boolean operators for complex query construction.","intents":["Find decision-makers and stakeholders at target companies matching specific job titles and seniority levels","Build prospect lists for outbound sales campaigns filtered by industry, company size, and technology stack","Verify contact information accuracy and retrieve alternative contact methods for existing leads","Discover new contacts at accounts already in the sales pipeline"],"best_for":["B2B sales teams building targeted prospect lists","Sales development representatives (SDRs) prospecting at scale","Revenue operations teams automating lead generation workflows"],"limitations":["Search results limited to Apollo's indexed database — may miss recently hired or non-public contacts","Email verification accuracy depends on data freshness; contacts may have changed roles or companies since last update","Complex multi-field queries may return rate-limited results if searching across very broad criteria","No real-time contact updates — data refreshed on periodic crawl schedule, not on-demand"],"requires":["Apollo API key with appropriate plan tier","HTTP client library (REST API)","Understanding of contact field schema and filtering syntax"],"input_types":["text (contact name, email domain, company name)","structured filters (job title, seniority, industry, company size)"],"output_types":["JSON contact objects with nested employment and company data","paginated result sets with metadata (total count, page info)"],"categories":["search-retrieval","data-processing-analysis"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_1","uri":"capability://data.processing.analysis.company.intelligence.and.enrichment","name":"company-intelligence-and-enrichment","description":"Retrieves and enriches company records from Apollo's database of 73M+ companies with structured data including company size, revenue, funding stage, technology stack, industry classification, growth metrics, and organizational hierarchy. The API returns company profiles linked to contact records, enabling sales teams to understand account-level context and buying signals. Enrichment includes technographic data (tools and platforms used) and firmographic data (headcount, funding, growth rate).","intents":["Enrich CRM company records with verified firmographic and technographic data","Identify companies matching ideal customer profile (ICP) based on size, industry, funding, and technology adoption","Build account-based marketing (ABM) target lists with company-level insights","Analyze competitive landscape by discovering companies using specific technology stacks or in specific growth stages"],"best_for":["Account executives and account-based marketing (ABM) teams building target account lists","Sales operations teams enriching CRM data with company intelligence","Product-led growth (PLG) teams identifying high-value accounts based on product usage signals"],"limitations":["Company data accuracy varies by company size and public visibility — private companies and startups may have incomplete or outdated information","Technographic data (technology stack) relies on web crawling and may miss internal tools or recently adopted platforms","Revenue and funding data sourced from public records and may lag actual company financials by 6-12 months","No real-time company updates — requires periodic re-enrichment for active accounts"],"requires":["Apollo API key with company enrichment plan tier","Company identifier (domain, name, or LinkedIn company ID)","HTTP client library (REST API)"],"input_types":["text (company name, domain)","structured identifiers (LinkedIn company ID, Apollo company ID)"],"output_types":["JSON company objects with nested firmographic, technographic, and organizational data","linked contact records for company employees"],"categories":["data-processing-analysis","search-retrieval"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_2","uri":"capability://data.processing.analysis.email.verification.and.validation","name":"email-verification-and-validation","description":"Validates email addresses against Apollo's database of verified contacts and performs real-time email verification using SMTP validation, domain checks, and pattern matching to determine deliverability. The API returns a confidence score and validation status (valid, invalid, unknown) along with metadata about the email source (work email, personal, etc.). Batch verification is supported for bulk email list cleaning and validation.","intents":["Verify email addresses before sending outbound sales campaigns to reduce bounce rates","Clean and validate existing email lists in CRM or marketing automation platforms","Determine if an email address is a work email vs personal email before outreach","Identify and flag invalid or risky email addresses that may harm sender reputation"],"best_for":["Sales and marketing teams validating prospect email lists before campaigns","Email deliverability teams managing sender reputation and bounce rates","Data quality teams cleaning CRM and marketing databases"],"limitations":["Real-time SMTP validation adds latency (~500ms-2s per email) and may trigger rate limits on target mail servers","Confidence scores are probabilistic — some invalid emails may be marked valid and vice versa","Batch verification has throughput limits; very large lists (1M+) may require async processing","Cannot verify emails that don't exist in Apollo's database with 100% certainty — relies on pattern matching and SMTP signals"],"requires":["Apollo API key with email verification plan tier","Email address(es) to validate (single or batch)","HTTP client library (REST API) or batch upload interface"],"input_types":["text (single email address)","CSV/JSON (batch email list)"],"output_types":["JSON validation result with status and confidence score","batch validation report with summary statistics"],"categories":["data-processing-analysis","safety-moderation"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_3","uri":"capability://automation.workflow.email.sequence.automation.and.execution","name":"email-sequence-automation-and-execution","description":"Automates multi-step email sequences (campaigns) with conditional logic, personalization, and timing controls. The API enables creation of sequences with multiple steps, delays between steps, conditional branching based on recipient engagement (opens, clicks, replies), and dynamic personalization using contact and company data. Sequences can be triggered manually or automatically based on list membership or CRM events. The system tracks engagement metrics (open rates, click rates, reply rates) and provides webhook callbacks for integration with external systems.","intents":["Create and execute multi-step email campaigns with automatic follow-ups based on recipient engagement","Personalize email content dynamically using contact and company data (name, title, company, industry)","Automate lead nurturing workflows with conditional branching (e.g., skip follow-up if email opened)","Track campaign performance and engagement metrics to optimize outreach strategy"],"best_for":["Sales development representatives (SDRs) automating outbound prospecting sequences","Sales teams executing account-based marketing (ABM) campaigns with personalization","Revenue operations teams building scalable lead nurturing workflows"],"limitations":["Sequence execution timing is best-effort; actual send times may vary based on system load and email provider rate limits","Conditional logic is limited to engagement signals (opens, clicks, replies) — cannot branch on external CRM data or custom events","Personalization is limited to contact and company fields in Apollo's database — cannot reference custom CRM fields or external data sources","No A/B testing built-in; requires manual sequence duplication and comparison for testing variants","Engagement tracking relies on email open pixels and click tracking — may undercount opens if recipients disable images"],"requires":["Apollo API key with sequence automation plan tier","Email account(s) to send from (must be verified with Apollo)","Contact list (from Apollo database or uploaded CSV)","Sequence template with steps, delays, and personalization variables"],"input_types":["JSON sequence definition (steps, delays, conditions, personalization)","contact list (Apollo contact IDs or CSV with email addresses)","email templates with personalization variables"],"output_types":["sequence execution status and tracking data","engagement metrics (opens, clicks, replies) per step","webhook events for external system integration"],"categories":["automation-workflow","tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_4","uri":"capability://data.processing.analysis.bulk.contact.and.company.import.and.sync","name":"bulk-contact-and-company-import-and-sync","description":"Enables bulk import of contact and company data into Apollo's platform via CSV upload or API batch endpoints, with automatic deduplication, enrichment, and CRM synchronization. The API supports mapping custom CSV columns to Apollo contact/company fields, automatic matching against existing Apollo records, and bidirectional sync with CRM systems (Salesforce, HubSpot, Pipedrive). Import jobs are processed asynchronously with webhook notifications on completion and error reporting for failed records.","intents":["Import existing prospect lists from CSV or external sources into Apollo for enrichment and sequencing","Sync Apollo contact and company data back to CRM systems to keep prospect information current","Deduplicate and merge contact records across multiple data sources","Bulk enrich imported contacts with Apollo's database information (email, phone, company data)"],"best_for":["Sales operations teams migrating prospect data into Apollo from legacy systems","Teams managing data synchronization between Apollo and CRM platforms","Revenue operations teams building automated data pipelines for lead enrichment"],"limitations":["Bulk import throughput limited to ~10K records per job; very large imports (100K+) require multiple batch jobs","Deduplication relies on fuzzy matching algorithms — some duplicates may be missed or false positives may occur","CRM sync is one-way (Apollo → CRM) or requires manual configuration for bidirectional sync","Custom field mapping limited to predefined Apollo contact/company fields — cannot map to custom CRM fields","Enrichment during import may take 24-48 hours for large batches as Apollo crawls and verifies data"],"requires":["Apollo API key with import/sync plan tier","CSV file with contact or company data (or API batch endpoint access)","Column mapping configuration (CSV columns → Apollo fields)","CRM API credentials if syncing to external CRM (Salesforce, HubSpot, etc.)"],"input_types":["CSV file (contact or company records)","JSON batch API payload (contact or company objects)","CRM export data (Salesforce, HubSpot, Pipedrive)"],"output_types":["import job status and progress tracking","enriched contact/company records with Apollo data","error report with failed record details and remediation steps","sync confirmation and CRM update status"],"categories":["data-processing-analysis","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_5","uri":"capability://tool.use.integration.webhook.and.event.streaming.integration","name":"webhook-and-event-streaming-integration","description":"Provides webhook callbacks and event streaming for sequence execution, engagement tracking, and contact/company data changes. The API supports configurable webhooks for events (email sent, opened, clicked, replied, sequence completed) with retry logic and signature verification. Events are delivered in real-time or near-real-time (typically <5 seconds) and include full context (contact, company, sequence, engagement details). Supports filtering webhooks by event type and contact/company attributes.","intents":["Trigger external workflows or CRM updates when prospects engage with email sequences (opens, clicks, replies)","Stream engagement data to analytics platforms or data warehouses for reporting and analysis","Sync Apollo contact and company data changes back to CRM systems in real-time","Build custom integrations with external tools (Slack, Zapier, custom applications) based on Apollo events"],"best_for":["Teams building custom integrations between Apollo and internal systems","Revenue operations teams automating CRM updates based on prospect engagement","Analytics teams streaming engagement data to data warehouses or BI platforms"],"limitations":["Webhook delivery is best-effort; no guaranteed delivery if receiving endpoint is down (retries limited to ~24 hours)","Event latency typically <5 seconds but can vary based on system load; not suitable for real-time applications requiring <1s latency","Webhook payload size limited to ~1MB; very large contact/company records may be truncated","No built-in event filtering or transformation — requires external logic to filter/transform events before downstream processing","Webhook signature verification requires HMAC-SHA256 implementation on receiving end"],"requires":["Apollo API key with webhook plan tier","HTTPS endpoint to receive webhooks (must be publicly accessible)","Webhook signature verification implementation (HMAC-SHA256)","Event processing logic (custom code or workflow automation platform)"],"input_types":["webhook configuration (event types, endpoint URL, filters)","event payload (JSON with contact, company, engagement, sequence data)"],"output_types":["webhook delivery status and retry logs","event stream data (JSON events with full context)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_6","uri":"capability://data.processing.analysis.contact.and.company.data.export.and.reporting","name":"contact-and-company-data-export-and-reporting","description":"Exports contact and company data from Apollo in multiple formats (CSV, JSON, Parquet) with flexible filtering, sorting, and field selection. The API supports scheduled exports (daily, weekly, monthly) to cloud storage (S3, Google Cloud Storage) or email delivery, and provides built-in reporting views (contact lists, company lists, engagement metrics, sequence performance). Exports can be filtered by contact attributes (title, seniority, industry), company attributes (size, revenue, funding), or engagement metrics (opens, clicks, replies).","intents":["Export prospect lists from Apollo to external systems (CRM, marketing automation, analytics platforms)","Generate reports on contact and company data for sales leadership and revenue operations","Schedule recurring data exports to keep external systems synchronized with Apollo data","Analyze engagement metrics and sequence performance across campaigns"],"best_for":["Sales operations teams exporting prospect lists for use in external systems","Analytics teams exporting engagement data for reporting and analysis","Revenue operations teams scheduling recurring data syncs to external platforms"],"limitations":["Export throughput limited to ~100K records per export; very large exports (1M+) may require multiple jobs or async processing","Scheduled exports have limited customization — predefined report templates may not match all use cases","Cloud storage exports require pre-configured credentials and permissions; no built-in encryption or access controls","Data freshness depends on export schedule; real-time exports not supported","No built-in data transformation or aggregation — requires external tools for complex analysis"],"requires":["Apollo API key with export plan tier","Export format preference (CSV, JSON, Parquet)","Cloud storage credentials (S3, Google Cloud Storage) if exporting to cloud","Email address for email delivery exports"],"input_types":["export configuration (filters, fields, format, schedule)","contact/company filter criteria (attributes, engagement metrics)"],"output_types":["CSV, JSON, or Parquet files with contact/company data","scheduled export status and delivery logs","reporting views and dashboards"],"categories":["data-processing-analysis","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__cap_7","uri":"capability://tool.use.integration.crm.native.integration.and.sync","name":"crm-native-integration-and-sync","description":"Provides native integrations with major CRM platforms (Salesforce, HubSpot, Pipedrive) via OAuth authentication and bidirectional data sync. The integration automatically syncs Apollo contact and company data to CRM records, maps Apollo fields to CRM custom fields, and supports two-way sync (CRM updates → Apollo and Apollo updates → CRM). Integration includes native UI extensions (sidebar, modal) for viewing Apollo data within CRM interface and triggering Apollo actions (add to sequence, enrich contact) from CRM.","intents":["View Apollo contact and company data directly within CRM interface without switching applications","Automatically sync Apollo contact enrichment data (email, phone, company info) to CRM records","Trigger Apollo actions (add to sequence, enrich contact) from within CRM workflow","Keep CRM and Apollo data synchronized with bidirectional sync"],"best_for":["Sales teams using Salesforce, HubSpot, or Pipedrive as primary CRM","Sales operations teams managing data synchronization between Apollo and CRM","Revenue operations teams building integrated sales workflows across Apollo and CRM"],"limitations":["Native integrations limited to Salesforce, HubSpot, and Pipedrive — other CRM platforms require API-based integration","Field mapping is predefined for common fields; custom CRM fields require manual configuration","Bidirectional sync can create conflicts if same field is updated in both systems simultaneously — requires conflict resolution logic","CRM API rate limits may throttle sync performance for large contact/company updates","OAuth token refresh and permission management adds complexity to integration setup"],"requires":["Apollo API key with CRM integration plan tier","CRM account (Salesforce, HubSpot, or Pipedrive) with admin access","OAuth authorization to connect Apollo to CRM","CRM field mapping configuration (Apollo fields → CRM fields)"],"input_types":["CRM contact/company records","Apollo contact/company data","field mapping configuration"],"output_types":["synced CRM records with Apollo data","sync status and error logs","CRM native UI extensions (sidebar, modal)"],"categories":["tool-use-integration","automation-workflow"],"confidence":0.5,"matches":0,"success_rate":0},{"id":"apollo-api__headline","uri":"capability://tool.use.integration.sales.intelligence.and.engagement.api","name":"sales intelligence and engagement api","description":"A powerful API that provides sales teams with access to a vast database of over 275 million contacts and 73 million companies, enabling effective prospecting, email verification, and automation for go-to-market strategies.","intents":["best sales intelligence API","sales engagement API for prospecting","API for email verification","top API for GTM teams","best API for contact enrichment"],"best_for":["sales teams","marketing teams"],"limitations":[],"requires":[],"input_types":[],"output_types":[],"categories":["tool-use-integration"],"confidence":0.5,"matches":0,"success_rate":0}],"trust":{"score":56,"verified":false,"data_access_risk":"high","permissions":["Apollo API key with appropriate plan tier","HTTP client library (REST API)","Understanding of contact field schema and filtering syntax","Apollo API key with company enrichment plan tier","Company identifier (domain, name, or LinkedIn company ID)","Apollo API key with email verification plan tier","Email address(es) to validate (single or batch)","HTTP client library (REST API) or batch upload interface","Apollo API key with sequence automation plan tier","Email account(s) to send from (must be verified with Apollo)"],"failure_modes":["Search results limited to Apollo's indexed database — may miss recently hired or non-public contacts","Email verification accuracy depends on data freshness; contacts may have changed roles or companies since last update","Complex multi-field queries may return rate-limited results if searching across very broad criteria","No real-time contact updates — data refreshed on periodic crawl schedule, not on-demand","Company data accuracy varies by company size and public visibility — private companies and startups may have incomplete or outdated information","Technographic data (technology stack) relies on web crawling and may miss internal tools or recently adopted platforms","Revenue and funding data sourced from public records and may lag actual company financials by 6-12 months","No real-time company updates — requires periodic re-enrichment for active accounts","Real-time SMTP validation adds latency (~500ms-2s per email) and may trigger rate limits on target mail servers","Confidence scores are probabilistic — some invalid emails may be marked valid and vice versa","builder identity is not verified yet","no observed match outcomes yet"],"rank_breakdown":{"adoption":0.7,"quality":0.8500000000000001,"ecosystem":0.15000000000000002,"match_graph":0.25,"freshness":0.75,"weights":{"adoption":0.25,"quality":0.25,"ecosystem":0.1,"match_graph":0.28,"freshness":0.12}},"observed_outcomes":{"matches":0,"success_rate":0,"avg_confidence":0,"top_intents":[],"last_matched_at":null},"maintenance":{"status":"active","updated_at":"2026-05-24T12:16:19.836Z","last_scraped_at":null,"last_commit":null},"community":{"stars":null,"forks":null,"weekly_downloads":null,"model_downloads":null,"model_likes":null}},"distribution":{"claim_url":"https://unfragile.ai/submit?claim=apollo-api","compare_url":"https://unfragile.ai/compare?artifact=apollo-api"}},"signature":"5EE+vggpF/NFVhFbvjGcGCOSj/01MUVorWajTkvdYE+GMUGnDu5zs5xrAutugKtpcEnqOUVRtro70RmlP7HABA==","signedAt":"2026-06-21T10:09:08.069Z","signedBy":"unfragile.ai","version":1},"_links":{"self":"https://unfragile.ai/api/v1/passport/apollo-api","artifact":"https://unfragile.ai/apollo-api","verify":"https://unfragile.ai/api/v1/verify?slug=apollo-api","publicKey":"https://unfragile.ai/api/v1/trust-passport-public-key","spec":"https://unfragile.ai/trust","schema":"https://unfragile.ai/schema.json","docs":"https://unfragile.ai/docs"}}