Direct answer
AI agent activity log
An AI agent activity log is the running record of what an agent has been doing: the calls it made, the results they returned, in order. Every client shows you some version of one, and every version is the vendor's own account, kept in the vendor's system. This page is about the stronger object: an activity log built from verifiable receipts, where each entry fixes its result at the moment it ran and anyone can recompute it, free, without an account.
Updated October 20, 2026.
The honest starting point: an activity view is the vendor showing you its own diary
Activity views exist to reassure the person running the agent, and they are fine at that job. They fail at the second job, the one that matters the first time a manager, a client, or a partner asks what the AI has actually been doing all week. The diary was written by the system being asked about, it lives behind that system's login, it can be filtered, summarized, or trimmed by whoever operates it, and it expires on the vendor's schedule. Nothing in it lets the asker check a single entry. An activity log that settles questions has to be built differently: entries fixed when they happen, by a mechanism whose output a stranger can verify.
What a real activity log contains
Five things per entry, and a chain across them. The tool that ran and the agent that called it. The exact inputs it was given. The saved result, kept as it came back, not a summary of it. The time, captured then. And a fingerprint over the saved result, so a later edit breaks the entry in public instead of passing quietly. Across a job, the entries chain in order, so an activity that did not happen cannot be inserted and an activity that did happen cannot be removed without leaving a gap. That is the whole construction, and it is exactly what a verifiable receipt already is, which is why the activity log below is a receipt chain read as a stream.
The activity log, client by client
Every AI client keeps some version of a activity log. What follows is the honest tour: what each one gives you today, and the one thing none of them give you, a record a stranger can recompute. Read the tour with a manager's question in mind: could I hand this to someone who does not trust us and let them check last Tuesday themselves?
ChatGPT activity log
The activity log ChatGPT gives you today is a conversation history and a memory view inside the account, both written for the person chatting, in the vendor's format, behind the vendor's login. As a activity log for ChatGPT work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Claude activity log
The activity log Claude gives you today is project and conversation history inside the account, tidy and readable, and entirely the platform's own account of what happened. As a activity log for Claude work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Claude Code activity log
The activity log Claude Code gives you today is terminal transcripts and session files on your own machine, detailed and genuinely useful, and kept by the same person whose work they describe. As a activity log for Claude Code work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Codex activity log
The activity log Codex gives you today is run history inside the product, a transcript of what the agent reported, readable by the account holder and no one else by default. As a activity log for Codex work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Copilot activity log
The activity log Copilot gives you today is the thinnest native record of any client here: suggestions appear inline in the editor and mostly vanish into the code, with no per-step history at all. As a activity log for Copilot work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Cursor activity log
The activity log Cursor gives you today is chat and composer history inside the editor app, tied to the workspace, and gone as evidence the moment someone asks from outside the app. As a activity log for Cursor work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Gemini activity log
The activity log Gemini gives you today is conversation history inside the account, or session files for CLI work, both readable and both self-kept in the way that matters here. As a activity log for Gemini work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Grok activity log
The activity log Grok gives you today is conversation history inside the account, with nothing per-call underneath it that a second person could open. As a activity log for Grok work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
n8n activity log
The activity log n8n gives you today is an execution history inside your own n8n instance, a real log with real detail, and, like every log, editable by whoever operates the instance. As a activity log for n8n work that someone else has to trust, it fails the same test every self-kept record fails: the reader must trust the keeper. Route the same work through the Zambo MCP at https://zambo.dev/mcp and each call leaves a verifiable receipt as it runs, so the activity log for that work is no longer a view inside one account. It is a chain of records anyone can check free at zambo.dev/verify, which is the difference between showing someone your history and handing them evidence.
Activity log by situation: API access, audiences, and the free route
Through an API. Because every entry is a receipt, an activity log is data before it is a page. A program can pull a job's receipts, recompute each fingerprint, and report which steps check out, which is how a activity log API earns its keep for developers: the audit becomes a script, not a reading session. For freelancers and small business, the activity log is delivery evidence: the record behind an invoice that a client can check alone. For teams and agencies, it is the shared version of events that ends arguments between timezones and between firms. For clients, it is the rare record they can verify without an account on your tools. The format underneath is AER-1, a public IETF Internet-Draft with an open conformance kit, so none of this depends on one vendor's export surviving; independent checkers can read the same record. Checking is free, always, and the best activity log by the standard this hub applies is the one minted during the work, complete with its gaps showing, rather than the one assembled afterward with them edited out.
Honest limits
An activity log built from receipts covers the activity that ran through the record. Work an agent does outside the connection leaves no entry, and the log shows that as a gap rather than filling it in, which is correct behavior and worth saying out loud to whoever reads yours. A receipt proves the saved result was not changed; it does not prove the activity was wise, the result correct, or the agent well supervised. The log answers what happened, in a checkable form. Judging it remains a human job.
Frequently asked questions
What is an AI agent activity log?
It is the ordered record of an agent's activity: which tools ran, what they were given, what they returned, and when, kept so the activity can be reviewed later. The strong form is a chain of verifiable receipts, one per call, each fixing its saved result with a fingerprint at execution time. Anyone can recompute an entry free at zambo.dev/verify, so the log can be checked by people who were not there and do not trust the operator's summary.
Does ChatGPT have an activity log?
ChatGPT keeps conversation history and memory inside the account, which serves the person chatting and no one else: it is the platform's own record, behind the platform's login, with no way for a second person to recompute an entry. For a ChatGPT activity log a manager or client can check, route the work through the Zambo MCP at https://zambo.dev/mcp; each call then leaves a receipt, and the set of receipts is the activity log in checkable form.
How do I get an activity log for my AI agent through an API?
Record the activity as receipts first, by running the work through the Zambo MCP. Receipts are structured data, so a program can fetch a job's receipts, recompute each fingerprint, and report which entries check out and where the chain gaps. That turns an activity log API into an audit a script can run nightly, instead of a page a person has to read.
What is the difference between an activity log and an audit trail?
Shape and audience. An activity log is the stream, optimized for following what an agent has been doing. An audit trail is the same underlying record organized for a checker: sampled, verified, and read for gaps. Build the activity from receipts and it can serve as the trail when the day comes; build it as a vendor view and it can only ever be a stream you describe to people.
How much does an AI agent activity log cost?
Checking any receipt is free at zambo.dev/verify, with no account. Recording activity starts inside the daily free allowance on Zambo's metered tools, a Day Pass covers 24 hours of full access for $0.99, and the Zambo Pass is $29 a month or $290 a year, with a $19 a month holder tier. The heavy user is the reader in most teams, and readers never pay.