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Evidence for your next connection.

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

Read-only probes

MCP server · Communication & messaging

Pipefire

Cold email for agencies: SPF, DKIM, DMARC, blacklist checks, plus campaigns and replies.

Checks passed
15 / 22

0 failed · 7 not measured

Median response
297 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
31

Tool definitions returned by this server

Independent monitoring

Health & checks

Status history

Responded

The server completed its last measured handshake. This is an observation, not a guarantee.

Last checked
Check summary by test group
Test areaPassedFailedUnmeasured
ConnectionCan a client connect and discover tools?
500
Reliability & speedDoes it respond consistently and quickly?
103
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 356 ms.

  • Pass
    Valid handshake

    protocolVersion 2025-11-25, serverInfo.name pipefire.

  • Pass
    Lists tools

    tools/list returned 31 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 297 ms over 2 samples in 7 days. The bar is 1000 ms. Need at least 5 samples.

  • Not measured
    Consistent (p95)

    95th percentile 350 ms over 2 samples in 7 days. The bar is 3000 ms. Need at least 20 samples.

  • Not measured
    Reliable (uptime)

    2 of 2 attempts returned a tool list in 30 days (100%). The bar is 99%. Need at least 30 samples.

  • Pass
    Stable tool list

    No tool was removed and no required parameter was added in the last 30 days.

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

    55 of 55 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 2026-11-10T19:48:17.463774Z, within 180 days.

  • Not measured
    Open-source licence

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

Start using Pipefire

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 pipefire https://pipefire.ai/mcp

Capabilities

Tools 31

account_summary

Overview of this Pipefire account: campaigns running, emails sent and replies this month, interested leads, and replies waiting for an answer. Start here.

Discovered
analyze_email_headers

Read the raw headers of a received email: SPF, DKIM and DMARC results, alignment, the delivery path and delays. Use when someone pastes headers and asks why a message went to spam or failed authentication.

Discovered
check_bimi

Check a domain's BIMI record (logo in the inbox) and whether its DMARC policy is strict enough for BIMI to show.

Discovered
check_blacklists

Check whether a domain's sending IPs, or a single IPv4 address, are listed on the major email blacklists (Spamhaus, Barracuda, SpamCop and others), with removal links.

Discovered
check_cold_email

Score a cold email (subject and body) out of 10 against the rules Pipefire checks its own emails with: length, reading level, the ask, subject line, and spam-filter wording. Returns each issue with why it matters and how to fix it.

Discovered
check_dkim

Look up a domain's DKIM public key, trying the selectors Google Workspace, Microsoft 365 and common senders use, plus one you name.

Discovered
check_dmarc

Check a domain's DMARC record: whether one exists at _dmarc, its policy (none, quarantine, reject), whether reports are collected, and outdated tags. Tells you whether the domain can be impersonated by email.

Discovered
check_domain_email_setup

Check whether a domain is set up to send and receive email properly: MX, SPF, DKIM and DMARC in one go, each with pass/warn/fail, what was found, and how to fix it. Use when someone asks why their email goes to spam, whether their domain is set up right, or before sending cold email.

Discovered
check_mta_sts

Check a domain's MTA-STS policy, which forces encrypted delivery of incoming mail.

Discovered
check_mx

List a domain's mail servers (MX records) and which provider handles its email.

Discovered
check_spf

Check a domain's SPF record: whether it exists, is valid, stays under the 10 DNS lookup limit, and ends with a sensible all mechanism.

Discovered
create_campaign

Write a new campaign from a short brief: who to email, where, and what you offer them. Pipefire writes the email sequence (two subject-line versions), starts finding and verifying the businesses, and saves it as a DRAFT. Nothing sends until you launch it. Read it with get_campaign. Takes up to a minute.

Discovered
fleet_status

The sending domains and mailboxes on this Pipefire account: which are ready, which are warming (and on what day), how many emails a day they can send, and anything paused or broken. Pipefire buys, sets up and warms these for you.

Discovered
generate_dkim_record

Format a DKIM public key as the TXT record to publish at selector._domainkey.yourdomain.

Discovered
generate_dmarc_record

Build a valid DMARC TXT record (to publish at _dmarc.yourdomain) from a policy and report addresses.

Discovered
generate_spf_record

Build a valid SPF TXT record for a domain from the email services it sends with, with warnings about the 10-lookup limit.

Discovered
get_campaign

One campaign in full: its market, how far it has got (found, verified, contacted, replied, interested), the emails it sends (both subject-line versions of email 1), and a sample of the businesses it will email. Use after create_campaign to read what was written.

Discovered
get_conversation

The full email thread with one prospect: what was sent, what they replied, and the draft answer if one is waiting. Sending the answer is done in the Pipefire console (link included), never from here.

Discovered
get_launch_link

Check that a draft campaign has its emails and return the link to it in the Pipefire console, where the user reads the emails and presses Launch themselves. This tool changes nothing and sends nothing.

Discovered
get_reply_approval_link

Check that a draft answer is waiting on a conversation and return the link to it in the Pipefire console, where the user reads it and presses Approve to send it themselves. This tool changes nothing and sends nothing.

Discovered
guess_email_addresses

List the likely email address formats for a person at a company domain (first@, first.last@, flast@ ...). Guesses only: verify before sending.

Discovered
lead_sourcing

How far Pipefire has got finding the businesses for one campaign: how many found, how many with an email, how many emails checked, how many owners named, which sources they came from, and the latest businesses found. Use after create_campaign, or when asked how a campaign's list is coming along.

Discovered
list_campaigns

Every campaign on this Pipefire account with its status, market, people contacted, replies, interested leads, meetings and next send. Use the id with pause_campaign or resume_campaign.

Discovered
list_replies

Prospect replies that need an answer, oldest first: who, which campaign, what the reply was classified as, a snippet, and whether a draft answer is ready. Use the id with get_conversation.

Discovered
pause_campaign

Stop a running campaign. Nothing further sends until it is resumed. Replies still arrive. Reversible with resume_campaign.

Discovered
redraft_reply

Ask Pipefire to rewrite the draft answer to a prospect, with an instruction such as "shorter", "more casual" or "offer to send the list first". Returns the new draft. It does not send: get the approval link with get_reply_approval_link.

Discovered
request_lead_list

When a prospect replies yes to a lead list, queue it: local businesses of the types they sell to, around their town, verified, as a spreadsheet and PDF on a private link. Ready in about 30 minutes; the link appears in the conversation and get_conversation. Up to 5 a day.

Discovered
results

Emails sent, replies, interested leads and meetings booked between two dates (inclusive). Dates are YYYY-MM-DD. Defaults to the last 30 days.

Discovered
resume_campaign

Restart a campaign you paused. A campaign Pipefire paused to protect your sending reputation cannot be resumed from here; the answer says why.

Discovered
suggest_sending_domains

Suggest lookalike sending domains for cold email (so the main domain is never put at risk), with live .com/.net availability. Give a business name or its website.

Discovered
test_subject_line

Score a cold email subject line out of 10: length, wording that hurts opens, and spam trigger words, with fixes.

Discovered

Recent measurements

Probe history

View status
Latest stored probes. Raw probe rows are kept for 14 days.
CheckedResultResponseTools
Connected356 ms31
Connected237 ms31