Category · Web, data & documents
Lead, contact and company data APIs for AI agents
APIs that find prospects, enrich people and companies, and find or verify email addresses. Search, enrichment and email verification are different jobs, so each listing says which it does and the Mode filter separates them.
Capability keys lead.search · lead.enrichment · email.verification · email.finder · data.company · All tools
letme.dev/lead.search picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 199 | Apollo API + MCPApollo.io · HTTP API | Leads | B | 63.6 | 2.5 (2) | n/a | n/a | $49 / seat-mo | OAuth or key | Hosted | ||
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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. Top strength People search costs 0 credits, up to 100 records a page and 50,000 a query Top weakness Headless MCP use needs a master key that reaches every endpoint |
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| 208 | Coresignal API + MCPCoresignal · HTTP API | Leads | B | 63.1 | 3.5 (2) | n/a | n/a | $49 / mo | OAuth or key | Hosted | ||
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Company, employee and job posting data collected from the public web, queried with filters or Elasticsearch DSL and pulled by ID, with a real-time employee lookup, profile-change webhooks and a natural-language Agentic Search API. Top strength Search is free, and credits are only taken on collect or enrich calls that return 200 Top weakness Real-Time API requests timing out for about six days up to 1 October, per the status page |
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| 215 | Lusha API + MCPLusha · HTTP API | Leads | B | 62.6 | 3.0 (2) | n/a | n/a | $49.90 / mo | OAuth or key | Hosted | ||
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Contact and company enrichment, filter-based prospecting, lookalikes, job-change and company signals, and webhooks over a versioned REST API with OpenAPI files. Top strength API key on every plan, including Free with 40 credits a month Top weakness At least 1 credit per request even when nothing matches |
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| 247 | LeadMagic API + MCPLeadMagic · HTTP API | Leads | C | 60.5 | 3.5 (2) | n/a | n/a | $99 / mo | OAuth or key | Hosted | ||
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Email validation, email and mobile finders, people and company search, company intelligence, job postings and ad data over one REST API with a published OpenAPI file. Top strength RFC 9457 problem-details errors with Top weakness No free tier or trial credits, plans from $99 a month |
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| 258 | FullEnrich API + MCPFullEnrich · HTTP API | Leads | C | 59.8 | 3.5 (2) | n/a | n/a | $55 / mo | OAuth or key | Hosted | ||
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Waterfall contact enrichment that queries 20+ data providers for work emails, personal emails and mobile numbers, plus people and company search and reverse email lookup. Top strength Credits only spent on found data, and identical re-runs within 3 months are free Top weakness Enrichment sources are third-party providers the vendor doesn't name |
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| 299 | Hunter API + MCPHunter · HTTP API | Leads | C | 56.8 | 3.0 (2) | n/a | n/a | $49 / mo | OAuth or key | Hosted | ||
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Email finder, email verifier, domain search, company discovery and person and company enrichment over a REST API, plus a hosted MCP server that also drives Hunter's leads, lists and cold-email sequences. Top strength Returns 451 for people who asked not to be processed Top weakness Hosted MCP has about 100 tools, including bulk deletes and API key creation, with no read-only mode |
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| 309 | Enrich Layer API + MCPEnrich Layer · HTTP API | Leads | C | 56 | 3.0 (2) | n/a | n/a | $0.10 / credit | API key | Hosted + local | ||
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Professional profile, company, job, school and contact lookups with person and company search, built on the old Proxycurl endpoint set after Proxycurl shut down in July 2025. Top strength Pay-as-you-go credits from $10, non-expiring unless idle for 18 months Top weakness Person Profile endpoint flagged with performance issues since 24 November 2025, with 30 to 100 second responses |
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| 331 | Crustdata API + MCPCrustdata · HTTP API | Leads | D | 53.5 | 2.5 (2) | n/a | n/a | Pay per use | OAuth or key | Hosted | ||
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Company, person, job, web and social post search and enrichment, with live web lookups, batch jobs and watchers that push changes to a webhook. Top strength Per-field credit prices, readable per account from Top weakness No status page and no SLA |
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| 355 | Dropcontact API + MCPDropcontact · HTTP API | Leads | D | 51.1 | 3.5 (2) | n/a | n/a | Paid | OAuth or key | Hosted | ||
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Batch contact enrichment from a name and company. Top strength Pay on success, with credits refunded when no email is found Top weakness No OpenAPI spec, llms.txt or changelog |
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| 356 | Prospeo API + MCPProspeo · HTTP API | Leads | D | 51.1 | 3.5 (2) | n/a | n/a | $49 / mo | OAuth or key | Hosted + local | ||
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Person and company search over a B2B database of 200M+ contacts, and enrichment that returns verified emails and mobiles for people and 50+ data points for companies. Top strength MCP tool descriptions say when to use each tool, its credit cost and the next call Top weakness No status page, SLA or changelog |
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Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
Indexed, not reviewed (11)
Listings sorted into this category from public catalogues (the official MCP registry, APIs.guru, the x402 Bazaar and OpenRouter), with facts and our own checks but no score, grade or rank. How the index works.
| Listing | Kind | What it does | Why it's here |
|---|---|---|---|
| Argorant argorant.com | MCP server | Verified B2B contact data: size a market free, reveal or export when the segment is right. | vendor's own |
| Ask Xverum xverum.com | MCP server | Find and enrich people from 750M professional profiles, with Next Move Signal job-change scores. | vendor's own |
| Asyntai asyntai.com | MCP server | Run your website's AI support agent: knowledge, conversations, leads and live replies. | vendor's own |
| Brandfetch brandfetch.io | MCP server | Search brands and retrieve design assets, company data, other brand context from Brandfetch's API | vendor's own |
| eng-leadership-toolkit marian.coach | MCP server | Engineering leadership benchmarks, 1:1 playbooks, developer value calculator. 3,400+ sessions. | vendor's own |
| IntentWake Audience Intelligence intentwake.com | MCP server | Enrich first-party lists with live intent, activity, and inbox signals for marketing and outreach. | vendor's own |
| leads spideriq.ai | MCP server | SpiderIQ Leads: lead-gen MCP (jobs, campaigns, IDAP, Maps, People, Verify, company intel, spiderPR) | vendor's own |
| mcp-explorium explorium.ai | MCP server | Access live company and contact data from Explorium's AgentSource B2B platform. | vendor's own |
| mlab.sh mlab.sh | MCP server | Threat intelligence: enrich IOCs (IP, domain, URL, hash), search CVEs and actors, scan SBOMs. | vendor's own |
| permits addressintel.co | MCP server | SF Peninsula building permits and parcel buildability: SB 9, ADU and redevelopment leads. | vendor's own |
| Swiss company data prospex.ch | MCP server | Swiss company data: Zefix register, SHAB gazette, simap tenders, FINMA, GLEIF and ARAMIS | vendor's own |
How we test this category
The same 50 company domains and 50 named prospects through every provider. We measure match rate, field completeness, email validity, stale records, latency and cost per usable record, and score search, enrichment and email verification separately. This test hasn't run yet, so Task success is pending and the grades here come from the categories assessed from public evidence.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
For companies
Do agents find, use and choose your tools?
An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.