--- title: "Hunter.io MCP server for AI agents - actionlake" description: "Give Claude 167 Hunter.io actions through one MCP server: leads, companies, team members. Your agent never holds the credential. 100,000 calls a month free." canonical: https://actionlake.com/connectors/hunter-io updated: 2026-10-23 --- Connectors · CRM & sales # Hunter.io MCP server for AI agents. actionlake is an MCP gateway: one remote MCP server that connects Claude and other MCP clients to Hunter.io and the rest of your systems. It gives your agent 167 Hunter.io actions (71 reads, 73 writes and 23 that wait for a confirmation) and holds the Hunter.io credential itself, so the agent never does. It paces Hunter.io's limits and records every call. [Connect Hunter.io free](https://actionlake.com/console?start=sandbox) [See pricing](https://actionlake.com/pricing) 100,000 free calls a month. No card, no email, no password: press Start a free sandbox on the next screen and keep the key it shows you. `claude mcp add --transport http actionlake https://connect.actionlake.com/mcp` the first call ``` do { action: "hunter.leads.list", intent: "check which Hunter.io account is connected" } # List leads · read · 1 upstream call ``` - 167 actions in one signed file - 71 read look, never change - 73 write create and update - 23 wait for a yes destructive, confirmed first Set up ## Connect Hunter.io in three steps. 1. 01 ### Add actionlake to Claude. Run the command once in Claude Code; its consent page can create a free sandbox: 100,000 calls a month, no card. In the Claude app, add a custom connector with the URL below and paste your key on the consent page. Creating a new sandbox from the Claude app is not yet tested by us. `https://connect.actionlake.com/mcp` 2. 02 ### Connect Hunter.io. API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. actionlake stores what you paste write-only, sealed under your tenant's key. - `api_key` Hunter API key ``` account { op: "connections.requirements", service: "hunter" } # free: exactly what to paste, and what is found for you ``` 3. 03 ### Make the first call. Check before a write. Ask in plain words; Claude picks the action. Before anything changes, `check` validates the call and prices it, for free. ``` do { action: "hunter.leads.list" } # list leads · read · 1 upstream call check { action: "hunter.leads.create", input: { … } } # free: inputs, permissions, cost and confirmations, nothing sent ``` Hunter.io at a glance **Sign-in** API key. No consent screen: your agent can connect it for you, but the key then passes through your chat. To keep it out of the model's context, paste it in the console instead. **You provide** `api_key` **Limits we pace to** 15 calls a second, per connection **API covered** Hunter API v2 (OpenAPI 2.0.0)`api.hunter.io/v2` **Built from** Hunter.io's documentation, read 22 October 2026[hunter.io](https://hunter.io/openapi.json) [hunter.io](https://hunter.io/api-documentation/v2) **Service file** Version 1.0.0, signed (Ed25519) **Cached reads** 70 of 71 reads, for up to an hour; a write clears what it affects **Shared entities** 3, so ask can line Hunter.io up with your other systems **Data** Processed and stored in Sydney, Australia. No US region yet Capabilities ## What an AI agent can do in Hunter.io. 167 actions in 1 area. Every one carries its effect, so a key can allow the reads and hold the rest. - **71** read look, never change - **73** write create and update - **23** destructive wait for a confirmation 1. ### Hunter 167 71 read · 73 write · 23 destructive List leads · List saved companies · List team members · Create a lead Top actions ## The Hunter.io API, shaped for agents. The ids your agent types, what each does, and the one name it shares with other systems. 12 of Hunter.io's 12 action names are shared with at least one other connector, so an agent learns them once. | Action | What it does | Effect | Same name in | | --- | --- | --- | --- | | `hunter.leads.list` List leads | List leads. | read | `crm.contact.list` 177 connectors | | `hunter.companies.list` List saved companies | List saved companies. | read | `crm.company.list` 162 connectors | | `hunter.team_members.list` List team members | List team members. | read | `identity.user.list` 474 connectors | | `hunter.leads.create` Create a lead | Create a lead. | write | `crm.contact.create` 161 connectors | | `hunter.companies.create` Save a company | Save a company. | write | `crm.company.create` 142 connectors | | `hunter.leads.delete` Delete a lead | Delete a lead. | destructive | `crm.contact.delete` 147 connectors | | `hunter.account.get` Get account details and usage | Get account details and usage. | read | `identity.current_user.get` 307 connectors | | `hunter.tags.list` List lead tags | List lead tags. | read | this connector | | `hunter.tags.create` Create a lead tag | Create a lead tag. | write | this connector | | `hunter.api_keys.list` List API keys | List API keys. | read | this connector | | `hunter.messages.list` List messages | List messages. | read | this connector | | `hunter.messages.send` Send a one-off message | Send a one-off message. | write | this connector | Try it ## Prompts to paste into Claude. Each one names the Hunter.io actions it will call, so you know what it reads and what it changes before you send it. 1. Read read Find the Hunter.io contacts with no email address, so we can clean them up. calls `hunter.leads.list` 2. Write write Create a lead in Hunter.io. Show me exactly what you will send before you save it. calls `hunter.leads.create` 3. Across systems read Which contacts are in both Hunter.io and HaloPSA, and how many are in only one of them? calls `hunter.leads.list` `halopsa.users.list` Across your systems ## Hunter.io, joined to the rest of your business. One `ask` fetches from Hunter.io and another system, joins the rows on the same customer on our side, and hands your agent the answer, not every row. - Which contacts are in both Hunter.io and HaloPSA, and how many are in only one of them? `hunter.leads.list` + `halopsa.users.list`, on `crm.contact` · [HaloPSA](https://actionlake.com/connectors/halopsa) - Which contacts are in both Hunter.io and NetSuite, and how many are in only one of them? `hunter.leads.list` + `netsuite.views.contacts`, on `crm.contact` · [NetSuite](https://actionlake.com/connectors/netsuite) Also mapped by other connectors `identity.user` **517** `crm.company` **227** `crm.contact` **192** ask ``` ask { intent: "which contacts are in both Hunter.io and HaloPSA, and how many are in only one of them", steps: [ { action: "hunter.leads.list", as: "people", input: {}, limit: 100, max_pages: 5 }, { action: "halopsa.users.list", as: "people2", input: {}, limit: 100, max_pages: 5 }, { join: { left: "people", right: "people2", on: "crm.contact", group_by: "people.email", select: ["people.email", "count(people2.id) as in_halopsa"] } } ] } ``` Example. Run it through check first: it validates the steps and prices them, and it is free. Governance for Hunter.io ## Destructive actions wait for a yes. 23 Hunter.io actions are destructive. These are all of them: - Delete a lead `hunter.leads.delete` - Delete a saved company `hunter.companies.delete` - Delete a lead tag `hunter.tags.delete` - Delete an API key `hunter.api_keys.delete` - Delete a webhook `hunter.webhooks.delete` - Remove a tag from a lead `hunter.lead_tags.detach` - Delete a sequence `hunter.sequences.delete` - Delete leads in bulk `hunter.leads.bulk_delete` - Delete a lead list `hunter.leads_lists.delete` - Delete a company tag `hunter.company_tags.delete` - Delete a company list `hunter.company_lists.delete` - Delete companies in bulk `hunter.companies.bulk_delete` - Delete a saved discover view `hunter.discover_views.delete` - Delete a message template `hunter.message_templates.delete` - Delete webhooks by identifier (legacy) `hunter.webhooks.delete_by_query` - Delete a lead list folder `hunter.leads_list_folders.delete` - Remove campaign recipients `hunter.campaign_recipients.remove` - Delete a sequence follow-up step `hunter.sequence_follow_ups.delete` - Remove sequence recipients `hunter.sequence_recipients.remove` - Delete a company list folder `hunter.company_list_folders.delete` - Remove a company from a company list `hunter.company_list_companies.remove` - Delete a lead custom attribute `hunter.lead_custom_attributes.delete` - Remove a tag from a saved company `hunter.company_tag_assignments.delete` A destructive action runs only with `confirm: true`. Under the `human` policy the agent cannot confirm for itself: the run stops until a named person approves, in the console or from a signed link in an email. The cap on a key is refused before the call is sent, never after. do hunter.leads.delete confirm_policy: **human** Delete a lead? **intent:** the user asked me to delete a lead run suspended · waiting for a named person · key _hunter-agent_ cannot confirm itself In the console, or from an emailed signed link. a key for this connector ``` account { op: "keys.create", name: "hunter-agent", allowed_actions: ["hunter.*"], cap_calls: 2000, confirm_policy: "human_for_writes", approval_rules: [ { match: "hunter.leads.delete", approver: "lead@example.com" }, { match: "hunter.companies.delete", approver: "lead@example.com" }, { match: "hunter.tags.delete", approver: "lead@example.com" } ] } ``` Illustrative. Scoped to Hunter.io only, capped at 2,000 upstream calls, every write confirmed, and the destructive ones approved by a named person. Cost ## What Hunter.io costs on actionlake. Every Hunter.io action is one upstream call, the only thing actionlake bills. Searching, `check`, `cost`, `account` and any call Hunter.io refused with 401, 403, 429 or a 5xx are free. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000. - 1 upstream call per action all 167 Hunter.io actions - 167 actions page each page of a long list is one call - 70 reads can be cached a cache hit costs nothing - 100,000 calls a month, free paid plans from US$49 a month for 250,000 [See pricing](https://actionlake.com/pricing) Action index ## Every Hunter.io action. 167 actions by area: the id your agent calls, what it does, and its effect. **Hunter 167** - `hunter.account.get` Get account details and usage read - `hunter.account.get_stats` Get account profile summary read - `hunter.account.update` Update account details write - `hunter.api_keys.create` Create an API key write - `hunter.api_keys.delete` Delete an API key destructive - `hunter.api_keys.list` List API keys read - `hunter.api_keys.replace` Replace an API key write - `hunter.api_keys.update` Update an API key write - `hunter.campaign_follow_ups.create` Add a campaign follow-up step write - `hunter.campaign_follow_ups.get` Get a campaign follow-up step read - `hunter.campaign_recipients.add` Add campaign recipients write - `hunter.campaign_recipients.list` List campaign recipients read - `hunter.campaign_recipients.remove` Remove campaign recipients destructive - `hunter.campaigns.list` List campaigns read - `hunter.campaigns.start` Start a campaign write - `hunter.combined.enrich` Enrich a person and company read - `hunter.companies.bulk_copy` Copy companies to another list in bulk write - `hunter.companies.bulk_delete` Delete companies in bulk destructive - `hunter.companies.bulk_move` Move companies to another list in bulk write - `hunter.companies.bulk_tag` Tag companies in bulk write - `hunter.companies.create` Save a company write - `hunter.companies.delete` Delete a saved company destructive - `hunter.companies.get` Get a saved company read - `hunter.companies.list` List saved companies read - `hunter.companies_enrichment.enrich` Enrich a company read - `hunter.company_list_companies.add` Add a company to a company list write - `hunter.company_list_companies.remove` Remove a company from a company list destructive - `hunter.company_list_folders.create` Create a company list folder write - `hunter.company_list_folders.delete` Delete a company list folder destructive - `hunter.company_list_folders.get` Get a company list folder read - `hunter.company_list_folders.list` List company list folders read - `hunter.company_list_folders.replace` Replace a company list folder write - `hunter.company_list_folders.update` Update a company list folder write - `hunter.company_lists.create` Create a company list write - `hunter.company_lists.delete` Delete a company list destructive - `hunter.company_lists.favorite` Favorite a company list write - `hunter.company_lists.get` Get a company list read - `hunter.company_lists.list` List company lists read - `hunter.company_lists.replace` Replace a company list write - `hunter.company_lists.unfavorite` Unfavorite a company list write - `hunter.company_lists.update` Update a company list write - `hunter.company_tag_assignments.create` Tag a saved company write - `hunter.company_tag_assignments.delete` Remove a tag from a saved company destructive - `hunter.company_tags.create` Create a company tag write - `hunter.company_tags.delete` Delete a company tag destructive - `hunter.company_tags.get` Get a company tag read - `hunter.company_tags.list` List company tags read - `hunter.company_tags.replace` Replace a company tag write - `hunter.company_tags.update` Update a company tag write - `hunter.connected_apps.get` Get a connected app read - `hunter.connected_apps.list` List connected apps read - `hunter.connected_apps.push_leads` Push data to a connected app write - `hunter.discover.search` Discover companies read - `hunter.discover_people.search` Discover people matching filters read - `hunter.discover_people.search_filters` Discover people using request-body filters read - `hunter.discover_views.create` Create a saved discover view write - `hunter.discover_views.delete` Delete a saved discover view destructive - `hunter.discover_views.get` Get a saved discover view read - `hunter.discover_views.list` List saved discover views read - `hunter.domain_finder.find` Find the domain for a company read - `hunter.domain_finder.find_post` Find the domain for a company via POST read - `hunter.domain_search.search` Find email addresses by domain read - `hunter.domain_search.search_advanced` Find email addresses by domain using request-body parameters read - `hunter.domains.count` Count domains matching discovery filters read - `hunter.domains.suggest` Suggest domains for a company name read - `hunter.email_accounts.get` Get an email account read - `hunter.email_accounts.get_capacities` Get email account sending capacities read - `hunter.email_accounts.get_health_report` Get an email account health report read - `hunter.email_accounts.get_usage` Get an email account usage report read - `hunter.email_accounts.get_warmup_report` Get an email account warmup report read - `hunter.email_accounts.list` List email accounts read - `hunter.email_accounts.list_sequences` List sequences using an email account read - `hunter.email_accounts.replace` Replace an email account write - `hunter.email_accounts.update` Update an email account write - `hunter.email_count.get` Count email addresses for a domain read - `hunter.email_finder.find` Find a professional email address read - `hunter.email_finder.find_found` Get a previously found email address read - `hunter.email_finder.find_found_post` Get a previously found email address via POST read - `hunter.email_insight.get` Get deliverability insight for an email address read - `hunter.email_verifier.verify` Verify an email address read - `hunter.feedback.create` Submit product feedback write - `hunter.lead_custom_attributes.create` Create a lead custom attribute write - `hunter.lead_custom_attributes.delete` Delete a lead custom attribute destructive - `hunter.lead_custom_attributes.get` Get a lead custom attribute read - `hunter.lead_custom_attributes.list` List lead custom attributes read - `hunter.lead_custom_attributes.replace` Replace a lead custom attribute write - `hunter.lead_custom_attributes.update` Update a lead custom attribute write - `hunter.lead_tags.attach` Tag a lead write - `hunter.lead_tags.detach` Remove a tag from a lead destructive - `hunter.leads.bulk_check_exists` Check whether leads exist in bulk read - `hunter.leads.bulk_delete` Delete leads in bulk destructive - `hunter.leads.bulk_move` Move leads to another list in bulk write - `hunter.leads.bulk_upsert` Upsert leads in bulk write - `hunter.leads.check_exists` Check whether a lead exists read - `hunter.leads.create` Create a lead write - `hunter.leads.delete` Delete a lead destructive - `hunter.leads.enrich` Enrich a lead write - `hunter.leads.get` Get a lead read - `hunter.leads.list` List leads read - `hunter.leads.replace` Replace a lead write - `hunter.leads.update` Update a lead write - `hunter.leads.upsert` Upsert a lead write - `hunter.leads_imports.create` Create a leads import from CSV data write - `hunter.leads_list_folders.create` Create a lead list folder write - `hunter.leads_list_folders.delete` Delete a lead list folder destructive - `hunter.leads_list_folders.get` Get a lead list folder read - `hunter.leads_list_folders.list` List lead list folders read - `hunter.leads_list_folders.replace` Replace a lead list folder write - `hunter.leads_list_folders.update` Update a lead list folder write - `hunter.leads_lists.create` Create a lead list write - `hunter.leads_lists.delete` Delete a lead list destructive - `hunter.leads_lists.favorite` Favorite a lead list write - `hunter.leads_lists.get` Get a lead list read - `hunter.leads_lists.list` List lead lists read - `hunter.leads_lists.merge` Merge lead lists write - `hunter.leads_lists.replace` Replace a lead list write - `hunter.leads_lists.unfavorite` Unfavorite a lead list write - `hunter.leads_lists.update` Update a lead list write - `hunter.lookalikes.list` Find lookalike companies from a company list or a domain read - `hunter.message_templates.create` Create a message template write - `hunter.message_templates.delete` Delete a message template destructive - `hunter.message_templates.get` Get a message template read - `hunter.message_templates.list` List message templates read - `hunter.message_templates.replace` Replace a message template write - `hunter.message_templates.update` Update a message template write - `hunter.messages.list` List messages read - `hunter.messages.send` Send a one-off message write - `hunter.multi_domain_search.reveal` Reveal emails from a multi-domain search write - `hunter.multi_domain_search.search` Multi-domain search read - `hunter.people.enrich` Enrich a person read - `hunter.sequence_follow_ups.create` Add a sequence follow-up step write - `hunter.sequence_follow_ups.delete` Delete a sequence follow-up step destructive - `hunter.sequence_follow_ups.get` Get a sequence follow-up step read - `hunter.sequence_follow_ups.list` List sequence follow-up steps read - `hunter.sequence_follow_ups.replace` Replace a sequence follow-up step write - `hunter.sequence_follow_ups.update` Update a sequence follow-up step write - `hunter.sequence_recipients.add` Add sequence recipients write - `hunter.sequence_recipients.list` List sequence recipients read - `hunter.sequence_recipients.remove` Remove sequence recipients destructive - `hunter.sequences.archive` Archive a sequence write - `hunter.sequences.create` Create a sequence write - `hunter.sequences.delete` Delete a sequence destructive - `hunter.sequences.get` Get a sequence read - `hunter.sequences.get_stats` Get sequence performance stats read - `hunter.sequences.list` List sequences read - `hunter.sequences.pause` Pause a sequence write - `hunter.sequences.replace` Replace a sequence write - `hunter.sequences.resume` Resume a paused sequence write - `hunter.sequences.send_test` Send a test email for every step of a sequence write - `hunter.sequences.start` Start a sequence write - `hunter.sequences.update` Update a sequence write - `hunter.tags.create` Create a lead tag write - `hunter.tags.delete` Delete a lead tag destructive - `hunter.tags.get` Get a lead tag read - `hunter.tags.list` List lead tags read - `hunter.tags.replace` Replace a lead tag write - `hunter.tags.update` Update a lead tag write - `hunter.team_members.list` List team members read - `hunter.usage.get` Get credit usage summary read - `hunter.usage.list_history` Get credit usage history read - `hunter.webhooks.create` Create a webhook write - `hunter.webhooks.delete` Delete a webhook destructive - `hunter.webhooks.delete_by_query` Delete webhooks by identifier (legacy) destructive - `hunter.webhooks.get` Get a webhook read - `hunter.webhooks.list` List webhooks read - `hunter.webhooks.replace` Replace a webhook write - `hunter.webhooks.update` Update a webhook write Questions ## The Hunter.io MCP server, answered. **Is there a Hunter.io MCP server for Claude?** Yes. actionlake is an MCP gateway: a remote MCP server that gives Claude, or another MCP client, 167 Hunter.io actions, through the same eight tools it uses for every other connector. actionlake is independent; it is not made or endorsed by Hunter.io. **What do I need to connect Hunter.io?** Hunter API key. The free call account { op: "connections.requirements", service: "hunter" } lists exactly what to paste. **Can an AI agent delete or change things in Hunter.io?** Only if its key allows it, and only with an explicit confirmation. 23 Hunter.io actions are destructive, including delete a lead, delete a saved company and delete a lead tag. Each runs only with confirm: true. Under the human confirm policy, or an approval rule on the key, the run waits until a named person approves it. **Will an AI agent use up my Hunter.io API limit?** actionlake paces every call to the limits in the Hunter.io service file: 15 calls a second per connection. Repeated reads are answered from cache (70 Hunter.io actions can be), which never reaches Hunter.io. **What does a Hunter.io action cost?** One upstream call, the only unit actionlake bills. A list that pages bills one call per page (167 Hunter.io actions page). Cache hits, searches, dry runs and calls Hunter.io refused with 401, 403, 429 or a 5xx are free. The Free plan includes 100,000 calls a month with no card. Paid plans start at US$49 a month for 250,000 calls, with overage from US$0.30 down to US$0.18 per 1,000. **Which Hunter.io API does it cover?** The Hunter API v2 (OpenAPI 2.0.0) at api.hunter.io/v2. It is built from Hunter.io's documentation as read on 22 October 2026. 167 actions in 1 area, each one in the signed service file (version 1.0.0). **Can I combine Hunter.io with my other systems?** Yes. ask joins Hunter.io to HaloPSA or NetSuite on the same customer and returns the answer rather than every row. Hunter.io maps crm.company, which 227 other connectors also map. **Does actionlake keep my Hunter.io data, and where?** actionlake processes and stores data in Sydney, Australia; there is no US region yet. Reads may be cached for up to an hour, and a write clears the reads it affects. Each run's request and response is kept, sealed, for your plan's trace window: 1 day on Free, 3 days on Starter, 7 days on Pro, 14 days on Team, 30 days on Business and 30 days on Enterprise. Your Hunter.io credential is sealed under your tenant's key, never logged and never returned. Your traffic is not used to train models. **Which AI clients can use it?** Claude Code, tested by us end to end, and the Claude app as a custom connector, tested by us with an existing key. Other MCP clients that support remote servers over Streamable HTTP (MCP revisions 2025-06-18 and 2025-11-25) and OAuth dynamic client registration, or a bearer header, should connect the same way; we have not tested them. Or plain REST, under the same action names. ## More connectors like Hunter.io Shares the most action names with - [Salesloft 12](https://actionlake.com/connectors/salesloft) - [Zoho SalesIQ 11](https://actionlake.com/connectors/zoho-salesiq) - [Keap (Infusionsoft) 10](https://actionlake.com/connectors/keap-infusionsoft) - [respond.io 7](https://actionlake.com/connectors/respond-io) - [Google Contacts 6](https://actionlake.com/connectors/google-contacts) - [Blackbaud SKY API 5](https://actionlake.com/connectors/blackbaud-sky-api) Joins with, on shared entities - [HaloPSA 3](https://actionlake.com/connectors/halopsa) - [Genesys Cloud CX 3](https://actionlake.com/connectors/genesys-cloud-cx) - [Odoo 3](https://actionlake.com/connectors/odoo) - [Zoho Desk 3](https://actionlake.com/connectors/zoho-desk) - [ERPNext (Frappe) 3](https://actionlake.com/connectors/erpnext-frappe) - [Productive.io 3](https://actionlake.com/connectors/productive-io) Browse - [All CRM & sales connectors](https://actionlake.com/connectors/category/crm-and-sales) - [All connectors](https://actionlake.com/connectors) - [How actionlake compares](https://actionlake.com/compare) actionlake is independent. It is not made or endorsed by Hunter.io; the name is the vendor's own. Counts are from the Hunter.io service file, version 1.0.0. ## Give your agent Hunter.io today. [Connect Hunter.io free](https://actionlake.com/console?start=sandbox) [See pricing](https://actionlake.com/pricing) Start free - 100,000 calls/month, no card. No signup. Hard caps on every key. Cached answers are free. --- Source: https://actionlake.com/connectors/hunter-io More: https://actionlake.com/llms.txt