Sumble
by Sumble
Research companies, their tech stacks, teams and staff from an AI agent. Sumble documents 34 tools; Anthropic's directory lists 23 stale names. OAuth sign-in, no scopes, metered in credits.
Verified connector
Listed by Anthropic as a partner connector in its Connectors Directory.
Connection checked by Agentman on .
Anthropic states this reflects the level of review a connector received, not a security audit.
Connect Sumble via MCP
https://mcp.sumble.comWorks in any MCP-compatible client. In Agentman Studio it is one click — no config file to edit.
Sumble Tools & Capabilities (34)
Tool names from Anthropic's directory listing. This server requires sign-in, so we could not read tool descriptions or parameter schemas.
Limits
- No OAuth scopes exist. Sumble's authorization server metadata and its RFC 9728 resource descriptor both omit
scopes_supportedentirely — absent, not empty. Nothing at the grant separates reading a company profile from revealing a phone number or soft-deleting a list. The boundary that matters here, between the routine read and the 80-credit contact reveal, is enforced by the tool's own parameter design rather than by consent. - Anthropic's directory listing is 11 names out of date and omits every consequential tool. Rely on Sumble's documentation, not the listing.
- We could not read tool schemas or safety annotations. The endpoint returned 401 anonymously, so no parameter-level detail or
readOnlyHintis published here. Everything below tool level comes from Sumble's REST documentation and OpenAPI spec, which the MCP tools mirror. RunSqlQuerymakes the read surface unenumerable. Any tableListTablesreports is reachable. Sumble bills it by response size, so a careless query is expensive rather than blocked.- Sumble's two credit tables disagree. Its API documentation prices organizations at "1 base credit + 1 per paid attribute"; its web-app credits page prices an organization export at "5 credits per row, per filter term". Both were live on 2026-08-22. Check your actual usage page rather than budgeting from either table.
- Purchased credits expire. Sumble states purchased credits expire three months after purchase and that monthly allocations do not roll over. Credits are non-refundable.
- People search is organization-scoped, always. Sumble requires
organization_idsor a saved organization list on every people query. You cannot search the whole database for a person by attribute alone. - Contact reveals are capped at 25 people per request and related people at 25 per request, so bulk contact extraction through the agent is throttled by design.
- Coverage is skewed. Sumble states coverage is "deepest for technology companies and companies with active hiring", because job posts are a primary source. A company that does not post jobs is thinly covered by construction.
- Intelligence briefs are LLM-generated by a third party. Sumble states the briefs surfaced through the MCP server are generated by Google's Gemini models, and names Google, OpenAI and Anthropic as LLM subprocessors. A 50-credit brief is model output over structured data, not a record.
- There is no Teams tool. Sumble's REST API publishes a
/v9/teamsendpoint with ICP scoring and per-team people, and no MCP tool exposes it. Team data reaches the agent only as a metric on the organizations tool. - Rate limits are 10 requests per second per user across all endpoints, returning HTTP 429. Insufficient credits return HTTP 402 before any work is done.
Frequently asked questions
Sumble's own documentation tables 34, and Anthropic's directory lists 23. The 23 are stale: Sumble states its unified endpoints replaced the previous find, match and enrich endpoints, and eleven directory names describe that older shape. Treat the vendor's 34 as current and the directory as a snapshot taken before the rewrite.
Yes. FindMatchAndEnrichPeople takes optional email and phone contact attributes that Sumble documents as reveals, charged at 10 credits for a first email and 80 for a first phone. They are never included in the all attribute selector and must be asked for explicitly, so a reveal is always a deliberate request rather than a side effect of enrichment.
Yes, read-only. Sumble documents a RunSqlQuery tool that runs SQL against its DuckDB and labels it a last resort, with ListTables enumerating every table and column. The read surface is therefore whatever that database holds rather than what the other tools expose, and it is billed by response size at one credit per 100 bytes.
None that narrow anything. Sumble's authorization server metadata at mcp.sumble.com advertised no scopes_supported on 2026-08-22, and its RFC 9728 resource descriptor omits the field too. There is no consent-time choice between reading a company profile, revealing a phone number, and deleting a saved list.
It can soft-delete a saved organization list. The tool is named SetOrganizationListDeleted and takes a boolean, so no delete verb appears in any tool name. Sumble documents the deletion as reversible by passing false, and states it preserves the organizations in the list. No tool deletes a contact list, a person or a company.
Yes, to Sumble's own teams. ReportDataQualityIssue and SubmitSupportRequest both create support tickets, and Sumble's API documentation states the reply-to address on every such email is your account email. Both are free of credits. Nothing in the tool set emails a prospect, a contact or anyone outside Sumble.
Name, job title, function, seniority, location, country, employer, LinkedIn URL and skills for people at any company Sumble covers, plus optional email and phone reveals. Sumble states this comes from public professional profiles and job posts. It also returns inferred managers and direct reports, which Sumble notes are inferred from org structure rather than actual reporting lines.
Every data call spends credits from your Sumble account. The free plan gets 500 credits a month and Pro gets 9,900, both resetting each billing cycle without rollover. An intelligence brief costs 50 credits and a first phone reveal costs 80, so a free account can afford roughly six phone reveals a month.
For Claude web and desktop, yes. Sumble's compatibility table lists Claude as paid plans only, and notes Team and Enterprise admins must enable connectors first. Claude Code is the exception — Sumble states it works on all Claude Code plans, added with claude mcp add against the same endpoint.
Sources
- Sumble MCP documentation, including the 34-tool table and per-platform setup (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble documentation full-text index,
llms-full.txt(retrieved 2026-08-22).docs.sumble.com/robots.txtcarries Content-Signalai-train=yes, search=yes, ai-input=yes— synthesis expressly permitted by the publisher. · retrieved 2026-08-22 - Sumble API overview, credits, rate limits and error codes (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble unified people endpoint, contact reveals and inferred related people (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble unified organizations endpoint (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble organization lists, including the soft-delete and signals setters (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble support endpoints and their reply-to behaviour (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble credits, plan allocations and expiry (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble alerts and Signals delivery channels (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble data sources, freshness and coverage (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble security, compliance and LLM subprocessors (retrieved 2026-08-22) · retrieved 2026-08-22
- Sumble OpenAPI specification v9, 29 operations across 27 paths (retrieved 2026-08-22) · retrieved 2026-08-22
- Live OAuth posture check: anonymous initialize returned 401 with a
www-authenticateBearer challenge naming the resource metadata document; RFC 9728 descriptor athttps://mcp.sumble.com/.well-known/oauth-protected-resourceand authorization server metadata athttps://mcp.sumble.com/.well-known/oauth-authorization-serverboth returned 200 with noscopes_supported(2026-08-22) · retrieved 2026-08-22 - Sumble MCP marketing page, the URL Anthropic's directory nominates (retrieved 2026-08-22). It is a 258-word landing page; the documentation site above is the substantive source. · retrieved 2026-08-22
- Anthropic Connectors Directory entry — , read from our directory snapshot dated 2026-08-16 · retrieved 2026-08-16
- Sumble support — <mailto:support@sumble.com> · Privacy
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Open in Agentman StudioServer Info
- Category
- Sales & CRM
- Developer
- Sumble
- Tools
- 34
- Domain
- mcp.sumble.com
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