mcphost
Host your MCP tool over streamable HTTP in one command.
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What it can do
What data it sees
Do you need an account
No: the server works without sign-in
Host your MCP tool over streamable HTTP in one command.
Server tool list (76)
Raw names from tools/list. Only developers need these.
| signup | Create a tenant and receive a bearer key and namespace. Unauthenticated. Recommended: pass handoff: true to receive a short-lived, single-use handoff_token instead of the raw key -- redeem it once with host.redeem to get the key, so a transcript of this call and the redeem call, if it leaks, carries a dead credential. The raw-key path (handoff omitted) stays fully supported. |
| host.whoami | Return the calling tenant's identity, including key_age_s and key_rotated_at for auditing credential hygiene. |
| host.redeem | Exchange a signup(handoff: true) handoff_token for the tenant key it was issued for. Single-use: a second redemption fails with handoff_token_redeemed; past its expiry it fails with handoff_token_expired. Unauthenticated -- the token itself is the proof. |
| host.key_rotate | Issue a new tenant key and invalidate the current one immediately: every other call using the old key fails as unauthenticated from this point on. Returns the new key exactly once -- use it (as tenant_key or Authorization) for every call after this one. |
| host.tool_publish | Publish a tool of a registered kind (chain, echo, http, python) under this tenant's namespace. Call host.quickstart(kind) first for a filled-in example spec and the full publish-to-call sequence. Name must match ^[a-z][a-z0-9_]{1,40}$; a rejection names the failing field and a corrected example. Try host.tool_test before a real call. |
| host.quickstart | Return the shortest ordered sequence of calls to a working tool of `kind`, with your namespace and a filled-in example already substituted in, plus the current limits and a try_before_call table naming the one dry-run tool for each case. Read-only. Call this before host.tool_publish if you're not sure what a spec should look like. Unauthenticated callers get the signup step first. |
| host.tool_list | List this tenant's published tools. |
| host.tool_remove | Remove a published tool by its local name. |
| host.tool_logs | Return the most recent log lines for one of this tenant's tools. |
| host.tool_test | Dry-run an already-published tool by name, no calls row written; for the other cases see host.quickstart. |
| host.bridge_test | Dry-run an unpublished http spec against its real upstream; for the other cases see host.quickstart. |
| host.tool_run | Debug-run a published python tool for stdout, stderr and exit code; for the other cases see host.quickstart. |
| host.tool_call | Invoke a tool this tenant has already published, by its local name -- the same real, metered call as calling it directly by its namespaced name (<namespace>.<name>), for a session that has no way to see its own namespaced tool name yet. Unlike host.tool_test, this counts toward host.usage and appears in host.tool_logs. Pass async: true for a tool that needs more than the call deadline: returns {run_id, status: "queued"} immediately instead of running inline -- see host.runs.get/wait. |
| host.usage | Calls, errors and duration percentiles for this tenant over a window. |
| host.tool_share | Share one of this tenant's published tools with everyone (visibility: "public") or with a named group this tenant owns (visibility: "group", group: <name>). The tool keeps running in this tenant's own sandbox with this tenant's own secrets; a caller reaches it as <this tenant's namespace>.<name>. |
| host.tool_unshare | Take a shared tool back to private. |
| host.group.create | Create a named group this tenant owns, for host.tool_share(visibility: "group"). |
| host.group.add | Add a tenant (by namespace) to a group this tenant owns. |
| host.group.remove | Remove a tenant (by namespace) from a group this tenant owns. |
| host.group.list | List the groups this tenant owns and their members. |
| host.catalog.search | Search public tools across every tenant by name/description substring. |
| host.catalog.get | Return one public tool's descriptor and args_schema by its full name (<namespace>.<name>). |
| host.secret_set | Store an encrypted secret value under this tenant's namespace. |
| host.secret_list | List this tenant's secret names (never their values). |
| host.registry_publish | Publish this tenant's server.json to the configured MCP registry (requires --registry-url and admin.tenant_verify_namespace first). |
| host.state.get | Read one key from this tenant's key-value state namespace. Returns found: false (not an error) if the key was never set. |
| host.state.set | Write one key in this tenant's key-value state namespace; value may be any JSON value. Overrun of the plan's state_bytes_max quota fails with state_quota_exceeded and writes nothing. |
| host.state.delete | Delete one key from this tenant's key-value state namespace. |
| host.state.list | List keys (with their current values) in this tenant's key-value state namespace, optionally filtered by prefix. |
| host.state.table_create | Declare (or replace the schema of) a table in this tenant's state store. schema is {"column": "text"|"integer"|"real"|"boolean"|"json"}; primary_key, if given, must name one of schema's columns -- an insert whose row matches an existing row's primary_key value replaces it. |
| host.state.table_drop | Drop a declared table and every row it holds. |
| host.state.insert | Insert one row (an object) or several (an array of objects) into a declared table. Each row is validated against the table's schema first -- a type mismatch fails the whole call with state_schema_violation and writes nothing. |
| host.state.query | Read rows from a declared table, optionally filtered (where: "field op value", ops = != < <= > >=, clauses joined by ' and '), ordered (order_by: "field" or "field desc") and capped (limit). |
| host.state.delete_rows | Delete rows from a declared table matching an optional where filter (same grammar as host.state.query); omitting where deletes every row in the table. |
| host.table.create | Declare a table in this tenant's SQL table store -- a different store from host.state.*'s key-value namespace and its own tables: use host.state.* for a handful of small values, host.table.* when you want real SQL (joins, aggregates, read-only queries) over rows. columns is {"column": "text"|"integer"|"real"| "timestamp"|"boolean"|"json"}; primary_key, if given, must name one of columns's own entries. |
| host.table.append | Append one row (an object) or several (an array of objects) to a declared table. Each row is validated against the table's schema first -- a type mismatch fails the whole call with table_schema_violation and writes nothing. |
| host.table.query | Run a single read-only SQL SELECT (CTEs allowed) against this tenant's own tables. Structurally rejected (not by string matching): anything but exactly one SELECT statement, a result over 1,000 rows, or a query running past 5 seconds -- each refusal names the rule or bound it hit. |
| host.table.list | List this tenant's declared tables, each with its current row count, plus the tenant's whole table-store byte usage. |
| host.table.drop | Drop a declared table and every row it holds. |
| host.table.schema | Return one table's columns, types, row count and byte count, without running a query -- how an agent discovers its own table shape. |
| host.runs.get | Read one run's status, progress and (once done) result by id -- the same run a host.tool_call(..., async=true) or a scheduled/triggered execution created. |
| host.runs.list | List this tenant's recent runs, newest first, optionally filtered by tool, status (queued|running|done|error|timeout|cancelled) or trigger (call|job|schedule|event|chain). |
| host.runs.cancel | Stop a queued or running job: its sandbox process is killed within ~2s and the run reads cancelled. A run that already finished fails with run_not_cancellable. |
| host.runs.purge | Delete the stored results of every done run finished at or before before_unix; each then reads done with result: null, purged: true. Frees state_bytes_max quota the results were counted against. |
| host.runs.wait | Long-poll one run until it finalizes or timeout_s elapses (max 25s), returning its current status either way -- for a client with no polling loop of its own. |
| host.trigger.set | Run a published tool on a cron schedule (5-field: minute hour day-of-month month day-of-week, UTC), give it a public webhook URL (kind="event"): a signed POST to that URL runs the tool with the event as its argument, or fire it whenever this tenant receives a message (kind="message"): the tool runs with the message envelope as its argument. Each firing/delivery is a run visible in host.runs.list(trigger="schedule"|"event"|"message"). Refuses schedules_max/event_triggers_max (trigger_quota_exceeded, shared by event and message triggers) or a too-short schedule interval (trigger_interval_too_short); an invalid expression or verify config fails trigger_invalid naming the field. |
| host.trigger.list | List this tenant's triggers (optionally filtered by tool), each with next_unix, last_run_id and last_status (schedule), or url/verify/unverified (event). |
| host.trigger.get | Read one trigger's current schedule, next_unix, last_run_id and last_status. |
| host.trigger.pause | Stop a trigger from firing until resumed; still counts toward schedules_max. |
| host.trigger.resume | Re-enable a paused trigger; if its scheduled time already passed, the next tick fires it once (a missed firing is never replayed). |
| host.trigger.remove | Delete a trigger outright (frees its schedules_max slot, unlike pause). |
| host.trigger.fire | Run a schedule once right now, for testing -- recorded as trigger: "schedule" with manual: true, independent of next_unix or pause state. |
| host.trigger.test | Dry-run an event trigger's verify config against a payload you supply, without exposing its real URL -- verifies the signature exactly as POST /hooks/... would, then runs the tool with the event as its argument. Or, on a message trigger, runs the tool with a synthetic envelope (test: true, no messages row created). The run is marked test: true. A wrong signature fails signature_invalid, naming the header it checked. |
| host.trigger.replay | Re-run a past event- or message-triggered run's exact stored event/envelope (no re-verification -- the original delivery already passed it). The new run's trigger_ref names the original run id. |
| billing.plans | The plan catalog (price and quotas per plan) and whether Stripe billing is configured on this host. Anonymous callers get the same answer as tenants. |
| billing.status | This tenant's plan, usage against each quota, and when the daily call quota resets. |
| billing.checkout | Create (or reuse an open one for the same plan) a Stripe Checkout URL to upgrade this tenant, defaulting to the pro plan. Returns billing_unavailable if this host has no Stripe key configured -- call billing.plans first to check. |
| host.agent.whoami | Return this tenant's own agent-directory address: namespace, handle (if claimed), display name, contact_policy and plan. Never a key hash, billing field, or call log. |
| host.agent.profile_set | Claim or update this tenant's agent-directory card: an optional unique @handle (^[a-z][a-z0-9_]{2,31}$, stored lower-case), a description, up to 16 tags, and a contact_policy (open, contacts, or closed). Every argument is optional and, if omitted, leaves that field unchanged; an explicit null clears handle or description. A taken handle fails with handle_taken (names no one); a reserved one fails with handle_reserved. |
| host.agent.lookup | Resolve another agent's namespace or @handle to its public card (address, handle, display_name, description, tags, contact_policy, last_seen, source_class). Unknown, disabled, and deleted addresses all return the identical agent_not_found error. |
| host.agent.search | Find agents by exact tag or a case-insensitive substring of handle, display name, or description. Disabled tenants are excluded. Ordered by handle (unclaimed last), then namespace; page with cursor from the previous response. |
| host.msg.send | Send a message to one or more agent-directory addresses, creating a new thread (or, with thread_id, adding to one you already participate in). Refused recipients (agent_not_found, contact_refused, recipient_inbox_full) are listed in refused rather than failing the whole call; from is always the authenticated tenant, never a caller argument. |
| host.msg.reply | Reply in a thread you participate in; appends with the next seq. Blocked or contact-closed participants are skipped and listed in refused rather than failing the reply. thread_not_found (byte-identical for a nonexistent id) if you are not a participant. |
| host.msg.inbox | Every unread-or-read message across every thread you participate in, excluding your own sends, ordered oldest first; page with cursor from the previous response's next_cursor. |
| host.msg.thread | Every message in one thread you participate in, ordered by seq; thread_not_found if you are not (or no longer) a participant. |
| host.msg.ack | Mark messages as read for you; unread_only inbox reads stop returning them. Per-recipient -- a sender never sees others' receipts. |
| host.msg.block | Block an address: its future sends to you are refused agent_not_found, byte-identical to sending to a nonexistent address. You can still send to it. Block lists are never exposed to the blocked party. |
| host.msg.unblock | Remove a block. |
| host.msg.wait | Long-poll for a new message until one past cursor arrives or timeout_s elapses (max 25s), returning the same shape as host.msg.inbox either way -- for a client with no polling loop of its own. On timeout, messages is empty and next_cursor is unchanged. |
| host.agent.contact_request | Request contact with a contacts-mode address; creates or returns the pending request. not_needed for an open address or one you already have an accepted contact with; contact_refused for a closed address; contact_pending if a request is already pending or was denied within the last 7 days; agent_not_found (same as a nonexistent address) if that address has blocked you. Quota contact_requests_per_day. |
| host.agent.contacts | List your accepted contacts and every pending/decided contact request in either direction; status optionally narrows incoming/outgoing to one of pending, accepted, denied, expired. |
| host.agent.contact_accept | Accept a pending contact request addressed to you: both you and the requester become accepted contacts, visible from either side via host.agent.contacts(). |
| host.agent.contact_deny | Deny a pending contact request addressed to you. The requester's subsequent sends and requests get contact_pending for 7 days, then may request again. |
| host.agent.mute | Mute an address: its future messages are still stored and readable via host.msg.thread, but excluded from host.msg.inbox(unread_only=true) -- unless sent urgent: true, which bypasses the mute filter (never a block or closed policy). |
| host.agent.unmute | Remove a mute. |
| host.agent.contacts_import | Request contact with up to 50 addresses at once (e.g. an operator's own fleet of tenants); each is resolved the same way a single host.agent.contact_request would be, but a per-address failure (already connected, already pending, blocked, over quota, ...) is reported in that address's own result entry rather than failing the whole call. |