In-depth architectural comparison of the Affset and Justcall MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Affset
Developer Tools · Local stdio
Quality: 51/100 (Good) | Auth: No auth required
Justcall MCP Server
Developer Tools · Remote HTTP/SSE
Quality: 47/100 (Fair) | Auth: No auth required
Verdict Summary: Choose Affset if you need specialized Developer Tools tools running via a local process. Choose Justcall MCP Server if your workspace requires Developer Tools integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
A
Choose Affset when:
You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Show the tenant this server is bound to: namespace, API base, derived dashboard URL, and (when readable) company / timezone / custom API domain. Read-only.
get_stats
Traffic stats grouped by a dimension (date, campaign, zone, country, sub1–5, advertiser, publisher, …), optionally narrowed with `advertiser_email`/`publisher_email` filters (one user, any group_by). Returns clicks, conversions, CR, payout, media cost and ROI as a table. Sub columns use the tenant'…
list_campaigns
List campaigns (status / name filter, pagination).
get_campaign
One campaign's full record — every field (untruncated offer URL, exact schedule, budgets/pacing, silent flag, payout goal type) plus its targeting rules and payout rules, in one call.
list_zones
List traffic-source zones (status / name filter, pagination).
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Affset is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Justcall MCP Server belongs to Developer Tools using remote streaming HTTP/SSE transport. Select Affset when you need capabilities focused on developer tools and Justcall MCP Server when you require tools for developer tools.
List team members (email, role, manager). **Never returns API tokens.
create_team_member
Invite a team member (owner, manager, publisher, advertiser, publisher_manager, advertiser_manager). A scoped manager key can only create its own managed role, self-assigned. Returns the new API key **once** — `list_team` never shows it again. **Dry-run by default**; `confirm: true` to apply.
create_campaign
Create a campaign from an advertiser email, offer URL, geo, payout and name. Defaults: CPA / rate 0, **paused**, global payout rule, ready tracking link with `source_click_id={clickid}` + sub placeholders. **Dry-run by default**; `confirm: true` to apply.
set_campaign_status
Run** or **pause** a campaign (`action: "run" \
update_campaign
Partial update (name, offer URL, status, rate, budgets, dates, …). **Dry-run by default**; `confirm: true` to apply. Prefer `set_campaign_status` for run/pause.
create_zone
Create a traffic-source zone (name + optional postback/site/traffic-back URLs). Always created `active`. **Dry-run by default**; `confirm: true` to apply.
update_zone
Partial update (name, status, URLs). **Dry-run by default**; `confirm: true` to apply. Pass `null` to clear a URL.
+14 more tools listed on main page
Justcall MCP Server Tools (67)
list_calls
Lists all JustCall calls with various filtering options
get_call
Get a specific JustCall call by ID
update_call
Update a JustCall call (disposition, notes, rating)
get_call_journey
Fetch the sequence of events for a specific call
get_voice_agent_data
Get voice agent data for a specific call (deprecated, use get_voice_agent_call)
get_voice_agent_call
Retrieve voice agent related data for a specific call
list_users
List all users/agents in the account
get_user
Get detailed information for a specific user/agent
update_user_availability
Update a user's availability status to available or unavailable for calls
send_sms
Send an SMS/text message to a contact
list_sms
Retrieve all SMS/text messages
get_sms
Get detailed information for a specific SMS/text message