Best go-to-market tools to run from Claude or ChatGPT

We make InstinctGTM, which has an MCP server, so we are on this list and we have a view on the question that matters most: what an agent is allowed to do once it is connected. Every tool below lets an assistant such as Claude or ChatGPT read from it. Some let the agent write, and some let it send email in your name. Read which before you connect one. Everything here was read off each vendor’s own page on 3 October 2026.

The short answer

If you want to search a contact database and act on it from a chat, Apollo.io is the broadest, and it can send. For enrichment and research from a prompt, use Clay. For social drafts from an agent at no cost, Typefully’s free plan includes MCP. If you want an agent that drafts everything and sends nothing until a person approves it, that is the job we built for.

A contact database inside your chat: Apollo.io, MCP on any plan, free included
Enrichment and research from a prompt: Clay, finds contacts and pushes them to sequences
Social drafts from an agent, free: Typefully, agents, API and MCP on the free plan
An agent that drafts while a person approves: InstinctGTM, sending only through a per-message gate

The picks at a glance

Tool	Best for	Price	What the agent can do
Apollo.io	A contact database inside your chat	Free, then $49/seat	Search, enrich, sequence and send one-off emails
Clay	Enrichment and research from a prompt	Free, then $167/mo	Find contacts and push them to sequences
Lemlist	Managing sequences from a chat	$69/mo Email, unlimited users	MCP and CLI listed on the Email plan
Common Room	Buyer intelligence for a team’s agents	From $2,500/mo	MCP and CLI listed on its pricing page
Typefully	Social drafts from an agent, free	Free plan, 10 posts/mo	Queue drafts, leave feedback, manage the calendar
InstinctGTM(ours)	An agent that drafts while a person approves	Free, then $149/mo	Draft anything; send one approved draft at a time

What can an agent actually do through a go-to-market MCP server?

Three different things, and tools differ on which they allow. Reading is searching, enriching and reporting. Writing is creating lists, records and drafts. Acting is sending a message or changing something a customer will see.

Reading is low risk. Writing is recoverable. Acting is the one to look at hard, because an agent that misreads an instruction can send a hundred emails as quickly as one.

Should an AI agent be allowed to send email for you?

It is a choice about blast radius. Some tools here let an agent send one-off emails and enrol contacts in sequences, which is fast and is exactly as safe as the agent’s reading of your request.

InstinctGTM takes the other position: an agent can draft anything, and a message goes out only when one draft is approved by id, through the same checks as the button in the app. Neither position is wrong. Pick the one whose failure you can live with.

Apollo.io

Best for: A contact database inside your chat
Price: Free, then $49/seat
What the agent can do: Search, enrich, sequence and send one-off emails

Apollo MCP connects Apollo to Claude, ChatGPT and Perplexity on any plan, including free, per its own page on 3 October 2026. Its documented tools cover searching, enrichment, lists, sequences and sending one-off emails. Enrichment spends credits according to your plan, and Basic is $49 per seat a month billed annually.

If the job is "find these people and start a sequence" from inside a chat, this is the most complete option here.

What it does not do: With an API key instead of a sign-in, Apollo’s docs say requests act as the workspace’s longest-standing active admin and every call spends workspace credits. Connect it with that in mind.

Visit Apollo.io

Clay

Best for: Enrichment and research from a prompt
Price: Free, then $167/mo
What the agent can do: Find contacts and push them to sequences

Clay MCP works inside Claude and ChatGPT to find contacts, get emails and phone numbers, and push them to sequences, per its own page on 3 October 2026. Clay has a free plan, then $167 a month on Launch for monthly billing.

If your agent’s job is research and enrichment, this puts Clay’s providers behind a prompt.

What it does not do: It is strongest at data. What gets sent, and when, still runs through whatever sequencer the contacts are pushed to.

Visit Clay

Lemlist

Best for: Managing sequences from a chat
Price: $69/mo Email, unlimited users
What the agent can do: MCP and CLI listed on the Email plan

Lemlist lists its MCP and CLI on the Email plan, which is $69 a month with unlimited users, per its pricing page on 3 October 2026.

If your sequences already live in Lemlist, this lets an agent work on them without you opening the app.

What it does not do: Its pricing page lists the MCP without detailing what an agent can do through it, so read the tool list after connecting and before asking it to act.

Visit Lemlist

Common Room

Best for: Buyer intelligence for a team’s agents
Price: From $2,500/mo
What the agent can do: MCP and CLI listed on its pricing page

Common Room lists an MCP server and a CLI on its pricing page, on top of a platform that joins CRM, product, marketing and engagement signals into one view of each buyer. Essential is $2,500 a month billed annually with five seats, per its pricing page on 3 October 2026.

For a sales team that already runs on Common Room, the MCP puts that view inside each rep’s assistant.

What it does not do: The MCP is a door into the platform, so its price is the platform’s price, which is a team budget.

Visit Common Room

Typefully

Best for: Social drafts from an agent, free
Price: Free plan, 10 posts/mo
What the agent can do: Queue drafts, leave feedback, manage the calendar

Typefully’s free plan includes agent, API and MCP access, at 10 posts a month on one social set, and publishes to X, Bluesky, LinkedIn, Threads, Mastodon and Substack, per its pricing page on 3 October 2026. It says integrations and AI agents can queue drafts, leave feedback and manage your calendar.

For an agent that drafts social posts for you to review, this costs nothing to try.

What it does not do: AI writing sits on its paid Creator plan, and the paid prices did not render as text when we read the page, so we have not printed them.

Visit Typefully

InstinctGTM

Ours

Best for: An agent that drafts while a person approves
Price: Free, then $149/mo
What the agent can do: Draft anything; send one approved draft at a time

InstinctGTM runs an MCP server on every paid plan, signed in over OAuth. An agent can read your brief and the evidence behind each account, list what is waiting for approval, turn one idea into a native post per channel, and draft replies. Everything it produces lands in the approval queue. Sending happens through a single tool that approves one draft by id and runs the same checks as the button in the app: suppression, excluded domains, per-domain caps, mailbox health, autonomy stage and budget, in one transaction.

Nothing an agent holds can raise a sending cap, change an autonomy stage or bulk-export your contacts. Sending starts on Founder at $149 a month, and the versioned API is on Operator.

What it does not do: There is no contact database for an agent to search and no way to send in bulk. If the job is "find five hundred people and email them from Claude", Apollo.io does it and this will not.

See the plans

Which one should you choose?

You want to search for people and start sequences from a chat.
Apollo.io, because its MCP covers search, enrichment, sequences and sending, on any plan.
Your agent mostly researches and enriches.
Clay, because it puts Clay’s providers and tables behind a prompt.
You want an agent to draft social posts and you are not paying yet.
Typefully, because agents, API and MCP are on its free plan.
You want the agent to do the drafting and a person to own every send.
InstinctGTM, because sending only happens one approved draft at a time, through the pre-send checks.

What to do this week

Write down what you want the agent to do in one sentence, and mark whether it reads, writes or sends.
Connect one tool, then ask the agent to list its own tools before you ask it to do anything.
Run the job once with a person watching, and read what the agent actually called.
Only then let it run unattended, and only for the reading and writing parts.

Questions people ask

Which sales tools have an MCP server?

Among the tools we read on 3 October 2026: Apollo.io on any plan including free, Clay inside Claude and ChatGPT, Lemlist on its Email plan, Common Room on its pricing page, and Typefully on its free plan. InstinctGTM has one on every paid plan.

Is Apollo MCP free?

Apollo says any plan qualifies, including free, and that enrichment through the MCP spends credits according to your plan, per its pages read on 3 October 2026.

Can I use InstinctGTM from Claude?

Yes. InstinctGTM has an MCP server on every paid plan that Claude and other MCP clients connect to over OAuth. Drafts from the agent land in your approval queue, and nothing is sent until one draft is approved.

Connecting a go-to-market tool to an agent is easy now, and most of the tools you already use offer it. The question worth an afternoon is what the agent may do once connected, because reading and drafting fail quietly and sending fails in public. Choose for the failure you can live with.

Every claim on this page, and where to check it

Each claim below links to the competitor's own page and carries the date we last read it. Read on 2026-10-03. If something here is wrong or has changed, tell us and we will correct it.

Apollo MCP connects Apollo to Claude, ChatGPT and Perplexity on any plan, including free.
“Any plan qualifies, including free.”
apollo.ioChecked 2026-10-03Favours them
Apollo's MCP tools include sending one-off emails and managing sequence enrollment.
“Send one-off emails”
docs.apollo.ioChecked 2026-10-03Favours them
Enrichment through Apollo MCP spends credits according to your Apollo plan.
“Enrichment actions consume credits based on your Apollo plan.”
docs.apollo.ioChecked 2026-10-03
Apollo’s docs say that a headless MCP client using an API key acts as the workspace’s longest-standing active admin, and every call spends workspace credits.
“Requests act as your workspace's longest-standing active admin”
docs.apollo.ioChecked 2026-10-03
Apollo has a free plan with 900 credits per seat a year, and Basic is $49 per seat a month billed annually.
“Per seat per month, billed annually”
apollo.ioChecked 2026-10-03Favours them
Clay MCP works inside Claude and ChatGPT to find contacts, get emails and phone numbers, and push them to sequences.
“Find contacts, get emails and phone numbers, and push to sequences”
clay.comChecked 2026-10-03Favours them
Clay has a free plan, then $167 a month on Launch and $446 on Growth for monthly billing, with 10% off on annual.
“Start building in Clay for free. No strings attached.”
clay.comChecked 2026-10-03
Lemlist lists its MCP and CLI on the Email plan.
“lemlist MCP & CLI”
lemlist.comChecked 2026-10-03Favours them
Lemlist Email is $69 a month for 50,000 emails, with unlimited users.
“Unlimited users & Email senders”
lemlist.comChecked 2026-10-03Favours them
Common Room lists an MCP server and a CLI on its pricing page.
“Common Room MCP”
commonroom.ioChecked 2026-10-03Favours them
Common Room joins signals from CRM, product, marketing and engagement into one person-level view of each buyer.
“unifies every signal across CRM, product, marketing, and engagement into a single, continuously updated view of every buyer”
commonroom.ioChecked 2026-10-03Favours them
Common Room lists $2,500 a month on Essential, billed annually, including five seats and up to 100k contacts.
“5 seats included”
commonroom.ioChecked 2026-10-03
Typefully's free plan includes agent, API and MCP access, at 10 posts a month on one social set, and publishes to X, Bluesky, LinkedIn, Threads, Mastodon and Substack.
“Agents, API, MCP”
typefully.comChecked 2026-10-03Favours them
Typefully says integrations and AI agents can queue drafts, leave feedback and manage your calendar, and lists AI writing on its paid Creator plan.
“Integrations and AI agents can queue drafts, leave feedback, and manage your calendar.”
typefully.comChecked 2026-10-03Favours them

We read the prices and features for every tool here on 3 October 2026, off each vendor’s own page. They change often, so check before you buy, and tell us if something here is out of date.

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