Bardo

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "bardo": {
      "type": "http",
      "url": "https://bardo.id/mcp/"
    }
  }
}

40 tools

• bardo_verify

  Verify a signature over a UTF-8 message. Public utility (no session).

• bardo_encrypt

  Sealed-box encrypt a UTF-8 plaintext to a recipient's encryption public key.

• bardo_document_status

  Check whether a signed document is revoked. `id` is the document's own top-level `id` field (a ni:// URI) — the same thing credentialStatus.id (BardoRevocationCheck) points at. Safe to cache a "not revoked" answer for a while (see the response's own Cache-Control) rather than…

• bardo_document_revoke

  Revoke a document you issued. Proof is a fresh signature over 'revoke:' + the document's id, verified against the key its id already committed to, not an account lookup (Bardo never stored the document to look up in the first place) — this still needs no session at the protocol…

• bardo_sign

  Sign a UTF-8 message with the spirit key (or a service-derived key).

• bardo_decrypt

  Decrypt a sealed-box ciphertext addressed to you (root or service key).

• bardo_public_key

  Fetch your signing + encryption public keys (root, or for a service).

• bardo_derive

  Derive (and register) a service-scoped identity, e.g. 'github.com'.

• bardo_services_list

  List service-scoped identities you've already derived (bardo_derive), with their public keys and revoked status.

• bardo_export

  Export the raw spirit key (subject to policy). Handle with care. Only needs a step-up puzzle if your policy's export_mode is require_repuzzle — checked automatically, so you don't need to know your own policy first. If challenge_id and answer are omitted and one turns out to be…

• bardo_attestation_issue

  Assemble and sign a verifiable attestation — a self-contained, offline-verifiable claim about anything. The document itself is handed back, not stored anywhere (same as bardo_sign itself — there's no bardo_documents_list); see keep_copy below if you want Bardo to save one for…

• bardo_sessions_list

  List your active sessions (sliding TTL, absolute 24h cap each).

• bardo_session_revoke_current

  Revoke the session you're using right now. You'll need bardo_login (+ bardo_solve) again afterward to do anything session-gated.

• bardo_sessions_revoke_all

  Revoke every active session for your identity — e.g. after a suspected API-key leak. You'll need to log in again afterward.

• bardo_stepup

  Mint a fresh step-up puzzle for a privileged action (currently: bardo_policy_set). Solve it yourself, then pass challenge_id + your answer to the tool that needs it. (bardo_policy_set also mints one itself on demand — call this directly only if you want the puzzle up front.)

• bardo_policy_get

  View your self-binding security policy: export mode, session TTL cap, service allowlist, ratchet delay, tag encryption, delete grace period — plus any pending (queued) loosening and when it lands.

• bardo_policy_set

  Propose a change to your security policy. Give only the fields you want to change (export_mode: 'allow'|'require_repuzzle'|'disabled'). A change that only tightens (e.g. lowering max_session_ttl, narrowing service_allowlist, moving export_mode toward 'disabled') applies…

• bardo_policy_abort_pending

  Abort a queued policy loosening before it takes effect. No step-up needed — aborting only ever tightens back to the current policy.

• bardo_note_add

  Leave a note for your future, stateless self. title: a short name for the note, if it deserves a handle bigger than tags offer. summary: your own compressed reasoning for why it matters, for your future self. tags: space-separated categories. pinned: mark this as a cold-start…

• bardo_notes_list

  List your notes — previews only (title/summary/snippet/tags/links), never full text. Omit limit for everything; pass it to page through a large list, using the returned total_notes to know how much is left.

• bardo_note_get

  Fetch one note's full text (always the current version — any id from this note's history still resolves here), plus a preview of its directly linked notes. Omit offset/length for the whole text in one call; pass them to read a large note in bounded slices — the response's…

• bardo_note_history

  See every surviving version of a note (newest to oldest, up to the last 10 edits) — the actual wording at each point, not just metadata.

• bardo_note_update

  Edit a note. Give at most one text-edit mode: - text: replace the whole thing - append_text: add to the end - find + replace: find must match the current text exactly once Editing text creates a new version (old wording stays in history); title/summary/tags/pinned update…

• bardo_note_delete

  Delete a note (the whole thing, all versions together). Not immediate — it disappears from view right away but is only purged for real after a grace period, so bardo_note_undelete can still bring it back if this wasn't intended. Fails (423) if the note is locked — unlock it…

• bardo_note_undelete

  Restore a note that's still within its post-delete grace period.

• bardo_link_add

  Connect two notes with a reason, written from from_note_id's perspective ("clarifies my earlier assumption about X"). Set is_bidi=True only when the relation reads the same from either side (e.g. "relates to"); leave it False when it's directional (e.g. one clarifies the other)…

• bardo_link_delete

  Remove a link between two notes.

• bardo_dashboard

  Get oriented in one call: note count vs. the soft/hard limits, unread notices, every tag you've used so far (check before inventing a new one), your pinned entry-point notes (read these first if you have no memory of writing any of your notes), and your current policy — instead…

• bardo_notices

  List first-party notices about your account (policy changes, exports, …).

• bardo_notices_ack

  Mark notices read — all of them, or a specific list of ids.

• bardo_contact_get

  View the contact endpoint registered for out-of-band security alerts.

• bardo_contact_set

  Set or update the contact endpoint (email or webhook URL) for security alerts. Requires a step-up puzzle. If challenge_id and answer are omitted, a fresh puzzle is returned — solve it yourself, then call this tool again with all three parameters.

• bardo_contact_delete

  Remove the registered contact endpoint. Requires a step-up puzzle. If challenge_id and answer are omitted, a fresh puzzle is returned — solve it yourself, then call this tool again with both parameters.

• bardo_feedback

  Send feedback straight to Bardo's operator — a suggestion, a complaint, or a security concern (kind: 'suggestion' | 'complaint' | 'security'). One-way and stateless: this call carries no memory of anything you've sent before, and nothing you send now will be remembered next…

• bardo_account_deletion_status

  Check whether a deletion request is pending for this account, and where it stands: "none", "gathering" (still collecting confirmations), or "confirmed" (counting down to the actual, permanent purge).

• bardo_account_deletion_request

  Request permanent deletion of this identity — the account, its notes, everything. There is no undelete, unlike note deletion's grace period. Requires the original request plus two more confirmations, each on a genuinely different day, within a week — call this tool again on a…

• bardo_account_deletion_cancel

  Cancel a pending deletion, whichever phase it's in — gathering confirmations or already counting down. No step-up needed, and nothing else does this implicitly: logging in and reading your own notes during a countdown is always safe and never cancels it by itself. Only this…

• bardo_register

  Create a new Bardo identity. Save the returned api_key somewhere durable — it's your only way back to this identity across sessions. Bardo stores it sealed and cannot recover it if you lose it. Not active yet: give the returned claim_url to your human. Authentication fails…

• bardo_login

  Begin authentication with your api_key. Returns a puzzle you must solve YOURSELF (that's the point — a script solving it would make the proof worthless), then call bardo_solve(challenge_id, answer).

• bardo_solve

  Submit your answer to the login puzzle. On success, this connection is now logged in — every other tool (bardo_sign, bardo_notes_list, bardo_dashboard, ...) just works from here with no session_token needed. That only holds for *this* connection, though: if you continue in a…

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