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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "sendburg": {
      "type": "http",
      "url": "https://app.send-burg.com/mcp",
      "headers": {
        "Authorization": "Bearer ${SENDBURG_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http sendburg https://app.send-burg.com/mcp --header "Authorization: Bearer ${SENDBURG_TOKEN}"

[mcp_servers.sendburg]
url = "https://app.send-burg.com/mcp"
bearer_token_env_var = "SENDBURG_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sendburg": {
      "type": "remote",
      "url": "https://app.send-burg.com/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:SENDBURG_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "sendburg": {
      "type": "http",
      "url": "https://app.send-burg.com/mcp",
      "headers": {
        "Authorization": "Bearer ${SENDBURG_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=sendburg&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYXBwLnNlbmQtYnVyZy5jb20vbWNwIiwiaGVhZGVycyI6eyJBdXRob3JpemF0aW9uIjoiQmVhcmVyICR7U0VOREJVUkdfVE9LRU59In19"
}

{
  "servers": {
    "sendburg": {
      "type": "http",
      "url": "https://app.send-burg.com/mcp",
      "headers": {
        "Authorization": "Bearer ${SENDBURG_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "sendburg": {
      "httpUrl": "https://app.send-burg.com/mcp",
      "headers": {
        "Authorization": "Bearer ${SENDBURG_TOKEN}"
      }
    }
  }
}

extensions:
  "sendburg":
    enabled: true
    name: "sendburg"
    type: streamable_http
    uri: "https://app.send-burg.com/mcp"
    headers:
      "Authorization": "Bearer ${SENDBURG_TOKEN}"
    timeout: 300

Placeholders to fill from your own secret store: ${SENDBURG_TOKEN}. The registry never accepts secret values.

Quality 85 / 100new

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorization83 · weight 15

pass
auth.prmProtected Resource Metadata (RFC 9728) published
pass
auth.as_metadataauthorization server metadata reachable
warn
auth.cimdonly Dynamic Client Registration, deprecated in 2026-07-28 in favour of CIMD
n/a
auth.secret_in_urlno templated URL

tool hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations9 of 9 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: search_companies (destructiveHint, idempotentHint); search_contacts (destructiveHint, idempotentHint); get_company (destructiveHint, idempotentHint); …
pass
tools.token_costabout 2,482 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 1 of the 7 days needed

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

9 tools, about 2,482 tokens to load them all · tool set fecd9184a2bb · checked 2026-10-20 10:35 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 83 / 100

no-repository

provenance55

liveness100

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-2d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://app.send-burg.com/mcp` streamable-http	oauth2 AS: https://app.send-burg.com	yes	100%	373 ms	–	2026-10-20

Tools (9)

`bulk_reveal_emails`	Reveal email addresses for multiple contacts at once (up to 10). Each reveal costs 1 credit. Skips contacts whose emails are already revealed (free). Revealed emails are re-verified in the background — any that come back invalid or downgrade from verified are automatically refunded to your balance within about a minute. Returns emails, per-contact status, and total credits used.
`get_company`read-only	Get full company profile by ID (from search_companies), domain, or name. Returns description, technologies, social links, funding details, employee count, revenue, and founding year.
`get_contacts_at_company`read-only	Find people working at a specific company. Use after search_companies to get the companyId. Emails are masked — use reveal_contact_email to unlock. Useful for finding all decision makers at a target account.
`get_credit_balance`read-only	Check your Sendburg credit balance. Credits are consumed when revealing contact emails (1 credit) or phone numbers (30-100 credits depending on the source). Top up at app.send-burg.com/billing.
`get_user_info`read-only	Get your Sendburg account info: email, plan, credit balance, and usage stats. Useful to verify your connection is working and check your current plan.
`reveal_contact_email`	Reveal the full email address of a contact. Costs 1 Sendburg credit per reveal. The contactId comes from search_contacts or get_contacts_at_company. The email is RE-VERIFIED live at unlock time — the response includes the fresh verification status (verified/catch_all/unverified/invalid) and a `verified` boolean. If it comes back invalid, or was listed as verified but downgrades on the fresh check, the credit is automatically refunded (you keep the address). Also returns your remaining credit balance.
`reveal_contact_phone`	Reveal the verified phone number of a contact. Costs 10 Sendburg credits. Returns the phone number and your remaining credit balance. Use search_contacts or get_contacts_at_company to get a contactId first.
`search_companies`read-only	Search Sendburg's B2B company database with 25M+ companies. Filter by industry, country, city, state, employee size, technology stack, keywords, revenue range, and funding. Use offset for pagination to access all results.
`search_contacts`read-only	Search Sendburg's B2B contact database with 250M+ professionals. Filter by job title, seniority, department, country, city, state, industry, company size, technologies, keywords, and more. Set verifiedOnly:true (alongside another filter) to return ONLY contacts with a verified email. Every result includes emailStatus (verified / catch_all / unverified / invalid) so you can target verified contacts before spending a credit. Emails are masked — use reveal_contact_email to unlock (1 credit). Use offset for pagination.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.send-burg/sendburg",
  "title": "Sendburg",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://app.send-burg.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Bearer sb_... API key from app.send-burg.com Settings > API Tokens (not needed when your client signs in with OAuth)"
        }
      ]
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://send-burg.com/blog/mcp-connector-setup-guide",
  "description": "Search 250M+ B2B contacts and 25M+ companies; reveal verified work emails and phone numbers."
}