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Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

MCP server · Communication & messaging

NeverBounce MCP by usefulapi

MCP server for NeverBounce — business email verification, credits and bulk jobs.

Checks passed
14 / 22

0 failed · 8 not measured

Median response
52 ms

Median of successful probes over 7 days

30-day uptime
Not measured

Share of countable probes over 30 days, including daily rollups. Auth challenges are excluded.

Discovered tools
8

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Outdated check

Last connection measurement is over 24 hours old. Current availability is unknown.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
004
Access & authenticationWhat is required to use this server?
102
Tool qualityAre the tool definitions usable by an agent?
400
Publisher identityCan the publisher be traced to its source?
402

Unmeasured means there is not enough evidence to decide. How these checks work

Inspect individual checks 22 recorded

Core

  • Pass
    Reachable

    Latest probe returned HTTP 200 in 52 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name neverbounce-mcp.

  • Pass
    Lists tools

    tools/list returned 8 tools.

  • Pass
    Current protocol

    Negotiated 2025-11-25. The bar is 2025-06-18 or newer.

  • Pass
    HTTPS

    The endpoint URL is https.

Performance

  • Not measured
    Fast (p50)

    Median latency 52 ms over 1 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 52 ms over 1 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    1 of 1 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Not measured
    Stable tool list

    Fewer than two successful probes in 30 days, so tool-list stability is not measured.

Access

  • Pass
    Open access

    tools/list succeeded with no credential, and the record declares none.

  • Not measured
    Standard auth

    Auth is not required, so the OAuth metadata check does not apply.

  • Not measured
    Free tier cited

    No publisher quote has been checked.

Tools

  • Pass
    Tools described

    Every tool description is at least 20 characters.

  • Pass
    Valid input schemas

    Every inputSchema is a JSON Schema object.

  • Pass
    Parameters documented

    24 of 24 parameters have a description (100%). The bar is 80%.

  • Pass
    Safety hints

    Every tool sets readOnlyHint or destructiveHint.

Publisher

  • Pass
    Verified namespace

    Listed in the Official MCP Registry.

  • Pass
    Website matches publisher

    The website host matches the reverse-domain namespace.

  • Pass
    Source repo linked

    A repository URL is on file.

  • Not measured
    Repo owner matches

    This namespace is not an io.github login, so the owner comparison does not apply.

  • Pass
    Recently updated

    Updated 2026-11-10T23:34:32.829738Z, within 180 days.

  • Not measured
    Open-source licence

    The GitHub licence lookup has not returned an OSI result yet.

Start using NeverBounce MCP by usefulapi

Connect to this server

Choose your client, copy the configuration, then enable the server in your client’s MCP settings.

Run this command in your terminal, then restart Claude Code.

Claude Code

claude mcp add --transport http neverbounce-mcp-by-usefulapi https://neverbounce.usefulapi.io/mcp

Capabilities

Tools 8

neverbounce_create_job

WRITE: creates a bulk verification job from up to 100 e-mail addresses given in this call, and has NeverBounce parse it. It does NOT start the verification and spends NO credits; run neverbounce_start_job afterwards (that spends 1 credit per billable address). Put ALL the addresses of one list into ONE job: NeverBounce's rules allow 10 concurrent jobs and 50 runs a day, and many small jobs in a short time can get the account locked. Returns the job_id. POST /jobs/create.

Discovered
neverbounce_download_job_results

The results of a complete job as CSV text (the submitted columns plus email_status), cut at 200000 characters with a note when longer (use neverbounce_get_job_results to page through large jobs). By default every result type is included; set a type to false to leave it out. POST /jobs/download.

Discovered
neverbounce_get_account_info

Credits left (paid and free), credits used, and how many verification jobs are completed, queued, processing or under review. Free: it spends no credits. POST /account/info.

Discovered
neverbounce_get_job

One verification job: status (waiting, parsing, running, complete, failed, under_review...), failure reason, timestamps, totals (records, billable = credits it will use, processed, valid, invalid, catchall, disposable, unknown, duplicates, bad_syntax), bounce estimate and percent complete. Poll this until status is complete. POST /jobs/status.

Discovered
neverbounce_get_job_results

Per-address results of a job: the submitted row (data) and its verification (result, flags, suggested_correction, address info). Paged; use neverbounce_download_job_results for a CSV. The job must be complete. POST /jobs/results.

Discovered
neverbounce_list_jobs

Bulk verification jobs of the account (most recent first as NeverBounce returns them) with id, status, filename, timestamps, totals per result (valid, invalid, catchall, disposable, unknown, duplicates, bad_syntax), bounce estimate and percent complete. Filter by id, exact filename or status. POST /jobs/search.

Discovered
neverbounce_start_job

WRITE: STARTS a created job and SPENDS 1 credit per billable address (shown as total.billable in neverbounce_get_job); it cannot be stopped or undone. Safety: you must pass max_credits, and the job is refused when its billable count is above it or above 1000 (start bigger jobs in the NeverBounce dashboard). The job must be in status waiting or waiting_analyzed. With run_sample true it only runs the free sample analysis (estimated bounce rate) and spends nothing. POST /jobs/start.

Discovered
neverbounce_verify_email

WRITE: SPENDS 1 of your NeverBounce credits per call. Verifies ONE e-mail address and returns result (valid, invalid, disposable, catchall or unknown), flags (e.g. has_dns_mx, role_account, free_email_host), a suggested correction for typos like gmal.com, and optionally the parsed address parts. NeverBounce's usage rules: use this for a single address at the point of entry; do NOT call it in a loop over a list or database (the account can be locked) - use neverbounce_create_job for lists. POST /single/check.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected52 ms8