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Apollo.io

REMOTE · MCP.APOLLO.IO · SCANNED SEP 20

Prospect, enrich leads, and manage outreach sequences with Apollo.io.

Available components

remote · mcp.apollo.io 38
0 this week 38 Trust /100
Trust breakdown (7 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →

Endpoint Security94
Transport & Reachability0
Schema Quality & AI Usability0
  • Schema blocked by authentication: the endpoint requires auth we don't have to read it. See how to fix → Unverified
Stability & Change Management0
  • Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage0
  • Tool coverage blocked by authentication: the endpoint requires auth we don't have to read its tools.Unverified
Tool Safety0
  • Tool safety blocked by authentication: the endpoint requires auth we don't have to read its tools.Unverified
Capabilities0
  • Capabilities blocked by authentication: the endpoint requires auth we don't have to read them. See how to fix → Unverified

Unverified: 6 categories

Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm. Claim this server and supply a read-only token to verify it and lift the score.

Install

How do I install the Apollo.io MCP server?

Apollo.io is a hosted endpoint at https://mcp.apollo.io/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

remote · mcp.apollo.io

# add to Claude Code
claude mcp add --transport http apolloio-apollo-mcp 'https://mcp.apollo.io/mcp'
// .cursor/mcp.json
{
  "mcpServers": {
    "apolloio-apollo-mcp": {
      "url": "https://mcp.apollo.io/mcp"
    }
  }
}
// .vscode/mcp.json
{
  "servers": {
    "apolloio-apollo-mcp": {
      "type": "http",
      "url": "https://mcp.apollo.io/mcp"
    }
  }
}
# ~/.codex/config.toml
[mcp_servers.apolloio-apollo-mcp]
url = "https://mcp.apollo.io/mcp"
// opencode.json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "apolloio-apollo-mcp": {
      "type": "remote",
      "url": "https://mcp.apollo.io/mcp",
      "enabled": true
    }
  }
}
# add to OpenClaw
openclaw mcp add apolloio-apollo-mcp --url 'https://mcp.apollo.io/mcp' --transport streamable-http
# ~/.hermes/config.yaml
mcp_servers:
  apolloio-apollo-mcp:
    url: "https://mcp.apollo.io/mcp"
// ~/.netclaw/config/netclaw.json
{
  "McpServers": {
    "apolloio-apollo-mcp": {
      "Transport": "http",
      "Url": "https://mcp.apollo.io/mcp"
    }
  }
}
# add to Vellum
assistant mcp add apolloio-apollo-mcp -t streamable-http -u 'https://mcp.apollo.io/mcp'
// mcp.json
{
  "mcpServers": {
    "apolloio-apollo-mcp": {
      "type": "http",
      "url": "https://mcp.apollo.io/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

  • 5 Sept 26 +2
    • HSTS header: fail → pass ▲ security
  • 26 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 11 Aug 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 31 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 30 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 27 Jul 26 0
    • We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
  • 26 Jul 26 0

    First indexed and scored.

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 20 Sept 2026 · Probed https://mcp.apollo.io/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=apollo.io CN=YE2,O=Let's Encrypt,C=US 11 Aug 2026 9 Nov 2026 ECDSA 256 ECDSA-SHA384 618a583b54e4b34b4c7401630e6c3bc4613
SANs: *.apollo.io, apollo.io
CN=YE2,O=Let's Encrypt,C=US (CA) CN=Root YE,O=ISRG,C=US 3 Sept 2025 2 Sept 2028 ECDSA 384 ECDSA-SHA384 4df3b15dd6c0784c507cd37b58e6f115
CN=Root YE,O=ISRG,C=US (CA) CN=ISRG Root X2,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 ECDSA-SHA384 872165fc34b6e5fba8add5b3705fb53a
CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) CN=ISRG Root X1,O=Internet Security Research Group,C=US 13 May 2026 2 Sept 2032 ECDSA 384 SHA256-RSA 6c8f1dc727c7117f7baf853ac980f9cd

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of mcp.apollo.io. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
io. present 57355 8 Verified
apollo.io. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication Enforced and verified

The endpoint asked for a token and published valid RFC 9728 metadata describing how to get one.

Result Enforced and verified
Enforced On connection
HTTP status 401

WWW-Authenticate challenge Bearer realm="Apollo.io", resource_metadata="https://mcp.apollo.io/.well-known/oauth-protected-resource", scope="read_user_profile app_scopes people_bulk_match organizations_bulk_enrich organizations_enrich people_match webhook_result_read mixed_people_api_search organizations_job_posting mixed_companies_search organizations_search contact_write contact_update contacts_search contact_read account_write account_update context_center_read context_center_write emailer_campaigns_search emailer_campaigns_create emailer_campaigns_update emailer_campaigns_approve emailer_campaigns_add_contact_ids emailer_campaigns_remove_or_stop_contact_ids emailer_schedules_list emailer_messages_search emailer_messages_create emailer_messages_send_now emailer_messages_email_send_status emailer_messages_get_content emailer_campaigns_activity_feed report_sync agent_task email_accounts_list custom_objects_write custom_objects_read custom_field_write opportunity_write opportunities_list opportunity_read tasks_create tasks_list email_ac 

Bearer realm="Apollo.io", resource_metadata="https://mcp.apollo.io/.well-known/oauth-protected-resource", scope="read_user_profile app_scopes people_bulk_match organizations_bulk_enrich organizations_enrich people_match webhook_result_read mixed_people_api_search organizations_job_posting mixed_companies_search organizations_search contact_write contact_update contacts_search contact_read account_write account_update context_center_read context_center_write emailer_campaigns_search emailer_campaigns_create emailer_campaigns_update emailer_campaigns_approve emailer_campaigns_add_contact_ids emailer_campaigns_remove_or_stop_contact_ids emailer_schedules_list emailer_messages_search emailer_messages_create emailer_messages_send_now emailer_messages_email_send_status emailer_messages_get_content emailer_campaigns_activity_feed report_sync agent_task email_accounts_list custom_objects_write custom_objects_read custom_field_write opportunity_write opportunities_list opportunity_read tasks_create tasks_list email_ac
Header Value
strict-transport-security max-age=31536000
content-security-policy frame-ancestors 'self' chrome-extension://alhgpfoeiimagjlnfekdhkjlkiomcapa chrome-extension://ececkagaccnfmkopaiemklekhoimmgpn *.salesforce.com *.lightning.force.com; report-uri https://o101058.ingest.us.sentry.io/api/222018/security/?sentry_key=86bb17dd8c2449719dd6b498f3431191&sentry_environment=production&sentry_release=986217da8515a64891580283824585d9b81bcc80
x-content-type-options nosniff
x-frame-options ALLOWALL
www-authenticate Bearer realm="Apollo.io", resource_metadata="https://mcp.apollo.io/.well-known/oauth-protected-resource", scope="read_user_profile app_scopes people_bulk_match organizations_bulk_enrich organizations_enrich people_match webhook_result_read mixed_people_api_search organizations_job_posting mixed_companies_search organizations_search contact_write contact_update contacts_search contact_read account_write account_update context_center_read context_center_write emailer_campaigns_search emailer_campaigns_create emailer_campaigns_update emailer_campaigns_approve emailer_campaigns_add_contact_ids emailer_campaigns_remove_or_stop_contact_ids emailer_schedules_list emailer_messages_search emailer_messages_create emailer_messages_send_now emailer_messages_email_send_status emailer_messages_get_content emailer_campaigns_activity_feed report_sync agent_task email_accounts_list custom_objects_write custom_objects_read custom_field_write opportunity_write opportunities_list opportunity_read tasks_create tasks_list email_ac

Protected resource metadata

Document https://mcp.apollo.io/.well-known/oauth-protected-resource
Retrieved Yes
Resource https://mcp.apollo.io/mcp
Authorisation server https://mcp.apollo.io

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://mcp.apollo.io/mcp Auth required 401
http (plaintext) http://mcp.apollo.io/mcp HTTPS enforced 301 https://mcp.apollo.io/mcp
MCP tools

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →

No tool schema has been captured from this endpoint yet.

Common questions

What is the Apollo.io MCP server?

Apollo.io is an MCP server listed in the public MCP registry as io.github.apolloio/apollo-mcp. Prospect, enrich leads, and manage outreach sequences with Apollo.io. This page covers its hosted endpoint (https://mcp.apollo.io/mcp).

Is the Apollo.io MCP server safe to use?

Apollo.io scores 38 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

Does the Apollo.io MCP server require authentication?

Yes. Apollo.io asked us for credentials when we connected, so you will need to authorise it in your MCP client before it can do anything.

Is the Apollo.io MCP server still maintained?

Apollo.io is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.