The handover family, first
Handover is Zambo's flagship: work passes from one agent or session to the next, and every step of the pass files its own receipt.
Receipt for handover
The handover tool packages work, finished or in progress, with its context, so another agent or a later session can pick it up and continue. 13 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a handover receipt records
Receipt for handover_status
The handover_status tool reports the current state of an existing handover, so a sender or receiver can see where a transfer stands. 10 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a handover_status receipt records
Receipt for handover_accept
The handover_accept tool records the receiving side accepting a handover, the moment a transfer stops being an offer and becomes received work. 2 receipts in the checked window.
Live examples: example 1 example 2 · What a handover_accept receipt records
The most used tools
The top of the usage ranking from Brennan's panel for the last 7 days, in panel order. Each one files a receipt on every call.
Receipt for prompt_shield
The prompt_shield tool scans a prompt or a block of pasted text for injection and jailbreak patterns before an agent acts on it. 195 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a prompt_shield receipt records
Receipt for workflow_close
The workflow_close tool closes a workflow and rolls the receipts of its steps into one closing record. 58 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a workflow_close receipt records
Receipt for capability_search
The capability_search tool takes a plain language query and returns the Zambo tools that match it, with a plan for using them. 192 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a capability_search receipt records
Receipt for continuity_get_recent
The continuity_get_recent tool returns the most recent continuity entries saved for a session, the thread a new session resumes from. 182 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a continuity_get_recent receipt records
Receipt for write
The write tool produces written text, and the receipt saves exactly the text the call returned. 93 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a write receipt records
Receipt for live_price
The live_price tool fetches a current market price instead of letting an agent quote a remembered one. 103 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a live_price receipt records
Receipt for leadsignal
The leadsignal tool finds lead signals for a trade in a city, the demand side of local work. 178 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a leadsignal receipt records
Receipt for proof_loop_check
The proof_loop_check tool files a proof loop check entry, a labelled observation inside a running proof loop. 7 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a proof_loop_check receipt records
More tools with real volume
Added because the public receipts API shows them with real volume: counts below are from the 1,600 most recent public receipts checked on 2026-10-24.
Receipt for memory_recall
The memory_recall tool recalls facts an agent saved to memory in earlier sessions. 293 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a memory_recall receipt records
Receipt for memory_remember
The memory_remember tool saves one fact to memory so a later session, or a different AI, can recall it. 104 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a memory_remember receipt records
Receipt for ghost_audit_site
The ghost_audit_site tool audits a public website and files the audit as a tracked run. 21 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a ghost_audit_site receipt records
Receipt for workflow_seal
The workflow_seal tool seals a workflow record, the step before a workflow close files the final roll up. 19 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a workflow_seal receipt records
Receipt for scam_check
The scam_check tool checks a target against scam signals and returns a verdict with its reasons. 9 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a scam_check receipt records
Receipt for journal_log
The journal_log tool logs a journal entry and files the entry as a receipt. 8 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a journal_log receipt records
Receipt for new_session
The new_session tool starts a new Zambo session, the opening call that later continuity and memory calls attach to. 8 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a new_session receipt records
Receipt for proof_loop_do
The proof_loop_do tool records a proof loop action entry, the doing step that a later proof_loop_check can check. 5 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a proof_loop_do receipt records
Receipt for activity_today
The activity_today tool summarizes what an account has done today. 5 receipts in the checked window.
Live examples: example 1 example 2 example 3 · What a activity_today receipt records
How checking a receipt works
Open zambo.dev/verify/, paste any receipt link from this page, and the checker recomputes the SHA-256 digest over the saved bytes and reports whether the record still matches. The same check runs over the API at https://zambo.dev/api/v2/receipt/{receipt-id}/verify. The format is AER-1 (draft-zambo-aer1-26), and the general explainer is AI agent receipts.
To file receipts of your own, add Zambo to your AI. Every account starts with 20 free calls per day, and free calls file receipts too.