io.github.lonniev/personalbrain-mcp

Tools

• brain_account_statement

  Generate a patron's account statement at this operator. Returns the patron's purchase history, active credit tranches, per-tool usage breakdown, and recent daily usage logs. This is the patron's spending account — not the operator's Authority tax balance. Free — no credits consumed. Proof of npub ownership is required to prevent statement-scraping of arbitrary patrons.

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• brain_account_statement_infographic

  Generate a visual SVG infographic of your account statement. Returns the same data as account_statement, rendered as a dark-themed SVG graphic with balance hero, metrics cards, health gauge, tranche table, and tool usage breakdown. Costs 1 api_sat per call. Proof is verified by ``debit_or_deny`` before any cost is incurred.

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• brain_add_file_attachment

  Add a file attachment to a thought. Requires npub for credit billing.

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• brain_add_url_attachment

  Add a URL attachment to a thought. Requires npub for credit billing.

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• brain_adoption_status

  Check this operator's adoption-request status at a chosen Authority. Free. Polls the Authority MCP-to-MCP for the status of this operator's request (pending / approved / rejected / provisioned).

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• brain_append_to_note

  Append content to an existing note. Requires npub for credit billing. Note style. Prefer plain prose. Reserve bold for rare critical flags only — a ⚠️ caution, an unconfirmed-status note — never for ordinary emphasis, labels, or whole clauses. Overusing bold buries the links and makes notes hard to scan; let thought-links and source links carry the visual emphasis. Put web sources on a quiet "Sources:" line rather than bolding labels like "TL;DR" or "Source". Linking to other thoughts. To link from inside a note to another thought, write a wikilink: [[Thought Name]] or [[Thought Name|display text]]. The tool resolves it to the correct in-plex thought link automatically — do not hand-write brain:// URLs or paste GUIDs. If a name is ambiguous or not found, the tool leaves the [[...]] literal and returns it in unresolved; disambiguate by pinning the id with [[#<thoughtId>]]. For external web pages, use normal markdown links: [text](https://…).

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• brain_brain_query

  Primary tool for pattern-based operations on TheBrain. Requires npub for credit billing. Accepts BrainQuery (BQL) -- a Cypher subset supporting MATCH, WHERE, CREATE, SET, MERGE, DELETE, and RETURN. ⚠️ Name-based matching (MATCH by name, WHERE CONTAINS/STARTS WITH/=~) resolves through the vendor's search/name index, which is incomplete on large brains (TheBrainTech/thebrain-api-quickstart-python#1): a query may fail to match a thought that provably exists. An empty match set is NOT proof of absence — do not CREATE/MERGE a node on the assumption it is missing without an ID-based check (get_thought). Matching by ID is reliable; matching by name inherits the index's blind spots.

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• brain_check_authority_balance

  Check this operator's tax balance at the Authority. Returns the sats available for certifying patron credit purchases. When this balance reaches zero, patron top-ups cannot be certified and the operator must call purchase_credits on the Authority. This is the operator's own funding — not a patron balance. Free.

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• brain_check_balance

  Check a patron's credit balance at this operator. This is the patron's spending balance — credits purchased via Lightning for tool calls at this operator. For the operator's own balance at the Authority (needed to certify patron purchases), use authority_check_balance instead. Free — no credits required. Proof of npub ownership is required to prevent anyone-with-the-registry from enumerating balances.

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• brain_check_payment

  Check the payment status of a Lightning invoice. Call after paying the invoice from purchase_credits. Free — no credits required. Proof of npub ownership is required to prevent credit-grant front-running by an observer of the invoice ID.

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• brain_check_price

  Preview the effective cost of a tool call. Shows the base cost and any constraint effects (discounts, free trials, surge pricing). Free — no credits required.

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• brain_check_proof_status

  Check whether a previously-cached dpop_token is still valid. Mirrors ``check_oauth_status`` for the npub-proof flow: a calling agent can ask "will my next paid call accept this dpop_token?" before burning credits on a guaranteed failure. Free, no side effects — does not evict the cache or touch relays.

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• brain_create_link

  Create a relationship between two thoughts by ID. Requires npub for credit billing.

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• brain_create_or_update_note

  Create or update a note with markdown content. Requires npub for credit billing. Note style. Prefer plain prose. Reserve bold for rare critical flags only — a ⚠️ caution, an unconfirmed-status note — never for ordinary emphasis, labels, or whole clauses. Overusing bold buries the links and makes notes hard to scan; let thought-links and source links carry the visual emphasis. Put web sources on a quiet "Sources:" line rather than bolding labels like "TL;DR" or "Source". Linking to other thoughts. To link from inside a note to another thought, write a wikilink: [[Thought Name]] or [[Thought Name|display text]]. The tool resolves it to the correct in-plex thought link automatically — do not hand-write brain:// URLs or paste GUIDs. If a name is ambiguous or not found, the tool leaves the [[...]] literal and returns it in unresolved; disambiguate by pinning the id with [[#<thoughtId>]]. For external web pages, use normal markdown links: [text](https://…).

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• brain_create_thought

  Create a new thought with optional type, color, label, and parent link. Requires npub for credit billing.

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• brain_delete_attachment

  Delete an attachment. Requires npub for credit billing.

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• brain_delete_coupon

  Delete a coupon. Cascades to all patron redemptions. Any chain step referencing the deleted coupon_id becomes a no-op (the constraint returns neutral on unknown ids) — the Studio surfaces orphan references as warnings. RESTRICTED to operator — requires proof.

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• brain_delete_link

  Permanently delete a link by ID. Cannot be undone. Requires npub for credit billing.

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• brain_delete_operator_credential

  Remove a single operator secret field. Deletes one key from the operator's encrypted credential blob without touching the others — the field-level counterpart to ``forget_credentials``, which wipes the whole row. Use it to retire a leftover after an SDK cutover (a Prefect key after Modal, or a stored but untemplated orphan like ``anthropic_api_key``) without taking the operator down for a full re-delivery. Stored-but-untemplated fields are first-class: the delete is keyed on what is vaulted, not on what the current template declares. Idempotent — already-absent fields report ``removed: false`` without rewriting the vault. RESTRICTED to the operator — requires proof (nsec-signed kind-27235 or a cached dpop_token phrase); patron proofs are rejected. A deletion is as destructive as a write.

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• brain_delete_patron_credential

  Remove a single patron credential field. Deletes one field from stored credentials without affecting other fields. Free. Proof of npub ownership is required — this is a write to the patron's sensitive credential vault.

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• brain_delete_thought

  Permanently delete a thought by ID. Cannot be undone. Requires npub for credit billing.

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• brain_event_for_person

  Create an Event+Person+Day in one action. Requires npub for credit billing.

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• brain_forget_coupon

  Remove a coupon from this patron's redemption list. Cosmetic only — the coupon itself still exists at the operator, and the patron can re-redeem the same code later while the window allows. Free — requires proof of ``npub``.

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• brain_forget_credentials

  Delete vaulted credentials for a specific service and npub. For operator credentials, pass the operator's own npub. For patron credentials, pass the patron's npub. Always requires proof of npub ownership — a deletion is as destructive as a write.

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• brain_get_attachment

  Get metadata about an attachment. Requires npub for credit billing.

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• brain_get_attachment_content

  Get the binary content of an attachment. Requires npub for credit billing.

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• brain_get_brain

  Get details about a specific brain. Requires npub for credit billing.

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• brain_get_brain_stats

  Get statistics about a brain. Requires npub for credit billing.

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• brain_get_link

  Get details about a specific link. Requires npub for credit billing.

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• brain_get_modifications

  The brain's authoritative, uncached change-log. Requires npub for credit billing. Unlike get_thought_graph and search (Azure-cached, stale for recent writes), this feed reflects every operation promptly — CREATED (101), DELETED (102), CHANGED_NAME (103), SET_TYPE (203), MOVED_LINK (402), etc. — with old→new values and timestamps. Use it for two things: 1. **Confirm a write landed** — after a mutation, query with start_time set to just before it and check for the matching entry. This is the authoritative read-after-write check (stronger than the cached graph, and it confirms deletes and type/link changes the graph hides). The heavy mutating tools also expose a ``confirm=True`` flag that does this for you. 2. **Discover recent / peer activity** — "what changed since T" so an agent can pick up where others left off. ⚠️ ``userId`` is the TheBrain *account* owner, shared by every agent using this operator's key — it distinguishes human-desktop vs API activity, NOT one agent from another. Peer discovery here is by time + content, not by author.

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• brain_get_nostr_profile

  Read an npub's public Nostr profile (NIP-01 kind-0 metadata). Free, no proof — the data is already public on relays. Returns the latest metadata fields (name, display_name, about, picture, banner, nip05, website, lud16) or an empty profile if none is published.

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• brain_get_notarization_proof

  Generate a Merkle inclusion proof that a patron's balance was included in a Bitcoin-notarized snapshot.

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• brain_get_note

  Get the note content for a thought. Requires npub for credit billing.

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• brain_get_operator_onboarding_status

  Report this operator's configuration readiness. Shows which operator settings are configured, which are missing, and how to deliver each missing value. For patron-level credential status, use get_patron_onboarding_status instead. Free.

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• brain_get_patron_credential_fields

  List stored patron credential field names (not values). Returns the names of fields stored for a patron, plus each field's ``delivered_at`` ISO-8601 timestamp when known (null for secrets vaulted before timestamps were recorded). Values are never exposed — use this to verify which fields are configured and how old each one is. Free. Proof of npub ownership is required: the list of configured fields is itself sensitive (reveals which integrations a patron has set up).

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• brain_get_patron_onboarding_status

  Report a patron's credential readiness for this operator. For set-once services (eXcalibur, TheBrain), shows which patron secrets are configured and which are missing. For dynamic/OAuth2 services (Schwab), reports that no patron credentials are needed. Free. Proof of npub ownership is required because credential presence is sensitive information about the patron's setup.

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• brain_get_pricing_model

  Get the active pricing model for this operator. Free. If no model exists, self-initializes a scaffold with all registered tools at 0 sats. No economic data from code.

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• brain_get_tags

  Get all tags in a brain. Requires npub for credit billing.

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• brain_get_thought

  Get details about a specific thought. Requires npub for credit billing.

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• brain_get_thought_by_name

  Exact name lookup — returns the first thought matching the name exactly. Requires npub for credit billing. ⚠️ NOT AUTHORITATIVE. Backed by the vendor's name index, which is known to be incomplete on large brains (upstream: TheBrainTech/thebrain-api-quickstart-python#1): a hit is real, but a MISS is NOT proof the thought is absent. Never conclude a thought does not exist from a null result here — verify by ID with get_thought, or by graph traversal from a known neighbour, before creating a duplicate.

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• brain_get_thought_graph

  Get a thought's full connection graph. Requires npub for credit billing. ⚠️ NOT AUTHORITATIVE FOR RECENT CHANGES. Served through the vendor's cached graph layer (Azure App Service response cache), which lags writes by hours-to-days and reflects creates but NOT updates or deletes — it can return renamed/retyped thoughts with their old values and even serve thoughts that were already deleted (upstream: TheBrainTech/thebrain-api-quickstart-python#2). Use this for fast traversal of established structure and for finding older thought IDs. Do NOT use it to verify a recent write — confirm mutations by ID with get_thought, which reads the authoritative command store.

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• brain_get_thought_graph_paginated

  Cursor-based paginated traversal of a thought's connections. Requires npub for credit billing. ⚠️ NOT AUTHORITATIVE FOR RECENT CHANGES. Same cached graph layer as get_thought_graph (upstream: TheBrainTech/thebrain-api-quickstart-python#2) — lags writes by hours-to-days and does not reflect updates or deletes. Use for traversal/ID discovery, never as read-after-write verification; confirm mutations by ID with get_thought.

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• brain_get_types

  List all thought types defined in the brain. Requires npub for credit billing.

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• brain_list_attachments

  List all attachments for a thought. Requires npub for credit billing.

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• brain_list_brains

  List available brains.

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• brain_list_canonical_identities

  Return canonical (tool_id, mcp_name, …) for every tool the wheel exposes. The authoritative source for any client (Studio, agents, FE) that needs to know how this MCP identifies its tools. Reconcile uses this output to UUID-join against the stored pricing model — no name-based UUID derivation, no guessing. Includes both ToolIdentity-seeded tools and any UUID recorded by ``@paid_tool`` that is missing from the registry. The latter appear with ``registered: false`` (and in the top-level ``unregistered`` array) so Reconcile can flag deploy drift instead of silently reporting clean when a live tool was never seeded (#174). If the operator renames a function or rebrands a slug, the mcp_name in this output changes but tool_id stays. That's the whole point of the canonical-UUID design. Also diffs the live FastMCP wire surface against the registry. Tools exposed on the wire but absent from the registry appear in ``unregistered`` so Reconcile can flag deploy drift instead of silently under-reporting (issue #175). Free, no side effects.

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• brain_list_constraint_types

  List all available constraint types and their parameter schemas. Returns the type, category, description, and parameter specs for every constraint that can be used in a pricing pipeline. Free — no credits required.

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• brain_list_coupons

  List every coupon this operator has minted (newest first). Each row carries the current ``times_redeemed`` counter — the Studio renders a progress bar from this against ``total_uses``. RESTRICTED to operator — requires proof.

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• brain_list_my_coupons

  List the coupons this patron has redeemed on this operator. Returns both active and exhausted redemptions with a per-row ``status`` (``active`` / ``window_closed`` / ``patron_limit`` / ``total_limit``). Free — requires proof of ``npub``.

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• brain_list_notarizations

  List recent Bitcoin notarization records.

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• brain_mint_coupon

  Create a new operator-owned discount coupon.

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• brain_morph_thought

  Atomically reparent and/or retype a thought in one operation. Requires npub for credit billing. Reparenting *replaces* the thought's existing parent link (the old parent child-link is deleted and a new one created); it does not add an additional parent. To also set the thought's name or label in the same call, use update_thought (which now accepts new_parent_id).

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• brain_notarize_ledger

  Build a Merkle tree of all patron balances and submit the root to Bitcoin via OpenTimestamps. Operator-only background task. Bitcoin confirmation takes 1-6 hours. Free — no credits required.

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• brain_oracle_about

  Describe the DPYC ecosystem via the Oracle. Free.

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• brain_oracle_get_tax_rate

  Get the current DPYC certification tax rate. Free.

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• brain_oracle_how_to_join

  Get DPYC onboarding instructions from the Oracle. Free.

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• brain_oracle_lookup_member

  Look up a DPYC community member by npub. Free.

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• brain_oracle_network_advisory

  Get active network advisories from the Oracle. Free.

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• brain_publish_nostr_profile

  Publish a CLIENT-SIGNED kind-0 profile to relays for an npub. The wheel never holds a patron nsec. The frontend signs the kind-0 metadata event with the patron's session key or a NIP-07 extension and passes the signed event (JSON) here; the wheel verifies the signature matches the npub, then relays it to public relays. The signature is the authorization — no proof token, no key custody. Free.

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• brain_purchase_credits

  Buy credits via Bitcoin Lightning. Creates a Lightning invoice. Pay it with any Lightning wallet, then call check_payment to confirm. Proof of npub ownership is required so credits land in the correct ledger. Free — no credits required to call.

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• brain_receive_credentials

  Pick up credentials from the Secure Courier. Completes the CREDENTIAL-DELIVERY flow (the ownership-proof counterpart is ``receive_npub_proof``). **Call this only after the user confirms they have replied.** Deterministic, one-shot retrieval: name the response you want with ``(sender_npub, service, dpop_token)`` and the tool drains ONLY the rendezvous relay that channel was pinned to. Every popped DM with the wrong session phrase is deleted and its sender is NACK'd; the first DM with the matching phrase is accepted (ACK'd) and the scan stops. If none match, the queue is drained and a ``courier_not_found`` result is returned. Do NOT poll, loop, or retry. If a credential_card (ncred1...) is provided, it is redeemed directly without any relay access (dpop_token not required for that path). On success, the payment processor client is reinitialized from the new credentials — no server restart needed.

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• brain_receive_npub_proof

  Receive npub ownership confirmation from a patron. Completes the npub-OWNERSHIP-PROOF flow (the credential-delivery counterpart is ``receive_credentials``). **Call this only after the user confirms they have replied.** Deterministic, one-shot retrieval: name the response with ``(patron_npub, dpop_token)`` — the ``dpop_token`` being the value returned by ``request_npub_proof``. The tool drains ONLY the pinned rendezvous relay that challenge was published on, stopping at the DM whose phrase matches. Mismatched DMs are deleted and NACK'd (without revealing the expected phrase). If called before the user replies, their message will never be found. Do NOT poll, loop, or retry. The signed DM itself proves npub ownership (the patron's nsec signed it). On success, returns the ``dpop_token`` — the same token. The calling application MUST remember it and pass it as the ``dpop_token`` parameter on every subsequent paid tool call. The proof (a hash of the token) is stored in the vault keyed by that hash — the MCP never stores the raw token itself. Free.

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• brain_receive_patron_credentials

  Pick up patron credentials from the Secure Courier. Deterministic, one-shot retrieval: name the response with ``(sender_npub, dpop_token)`` and the tool drains ONLY the pinned rendezvous relay for that channel, stopping at the matching DM. Provide an ncred1... credential_card to redeem directly instead (dpop_token not required for that path). Do NOT poll or retry. Free.

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• brain_redeem_coupon

  Claim a coupon by its name (the code the operator shared). Looks up the operator's coupon by ``code``, validates the window and total cap, and records a per-patron redemption row. Subsequent paid tool calls on this MCP auto-apply the discount until ``uses_per_patron`` is exhausted. Free — no credits required. Requires proof of ``npub``. Idempotent: redeeming the same code twice returns the existing redemption.

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• brain_report_issue

  File a field report about this service as a GitHub issue on the operator's repo. Found a tool's metadata or response wrong or confusing? Report it where the tool lives. The **author of record is your npub** — no npub / no proof, no issue — and it is stamped into the issue so the report is attributed to you, not the operator. Costs a small fee (a free write to an issue tracker would be abused). The report is PUBLIC and goes to the maintainers' normal triage; nothing is verified here. Returns the filed issue's repo, number, and url. If this operator has not enabled field reports, returns an "issue reporting not configured" situation and you are not charged.

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• brain_request_adoption

  Ask a chosen Authority to adopt this operator (deferred courtship). RESTRICTED to the operator — requires proof the caller controls this operator's npub. Resolves the Authority's MCP endpoint from the community registry, mints an inline ownership proof with this operator's nsec, and delivers the request MCP-to-MCP. The Authority records it as pending; its owner approves on their own time. Poll ``adoption_status`` for progress; the operator flips to ``ready`` once the Authority provisions it.

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• brain_request_credential_channel

  Open a Secure Courier channel for credential delivery. This is the CREDENTIAL-DELIVERY flow — use it to hand over a service secret (API keys, tokens). To merely prove you control an npub (the usual answer to a ``proof_required`` error), use ``request_npub_proof`` instead. Note: dynamic/OAuth2 services (e.g. Schwab) need NO couriered secret — check ``service_status`` first. Sends a welcome DM with a credential template. The recipient must read the DM in their Nostr client, fill in the fields, and reply manually. **This is a human-in-the-loop flow.** After calling this tool, STOP and tell the user what to do. Wait for the user to confirm they have replied before calling ``receive_credentials``. Do NOT poll or retry — each ``receive_credentials`` call destructively drains the relay mailbox.

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• brain_request_npub_proof

  Request npub ownership proof from a patron via Nostr DM. This is the npub-OWNERSHIP-PROOF flow — use it when a call returns ``proof_required``. It proves the caller controls an npub; it does NOT deliver any service secret. To hand an operator its API keys or OAuth secrets, use ``request_credential_channel`` instead. Sends a challenge DM that the patron must sign and reply to using their Nostr client. **This is a human-in-the-loop flow.** After calling this tool, STOP and tell the user to check their Nostr client and reply to the challenge. Wait for the user to confirm they have replied before calling ``receive_npub_proof``. Do NOT poll or retry — each ``receive_npub_proof`` call destructively drains the relay mailbox. **Returns** a ``dpop_token`` — the demonstrated-proof-of-possession token that the calling application MUST remember and pass as the ``dpop_token`` parameter on every subsequent paid tool call. The MCP does not retain this value across restarts. **Lifecycle:** The cached proof expires after the patron's chosen duration. When it expires, call ``request_npub_proof`` again for a fresh challenge, then wait for the user, then call ``receive_npub_proof``. Free.

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• brain_request_patron_credentials

  Open a Secure Courier channel for patron credential delivery. Sends a welcome DM with a credential template to the patron. Free.

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• brain_reset_pricing_model

  Erase all pricing models and restore a viable default. Deletes every stored model, then self-initializes a fresh one from the tool registry — all tools at 0 sats with proper UUIDs. Returns the new model. RESTRICTED to operator — requires proof (nsec-signed).

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• brain_restore_credits

  Credit a patron's ledger from a BTCPay-settled invoice. **RESTRICTED to the operator** — the operator owns the books and is the only party who can issue a manual credit grant. Patrons who believe they paid but never got credits must escalate to the operator's support, who then invokes this tool on their behalf. Use cases: cold-start vault races during check_payment, ncred delivery hiccups, patrons closing Top-Off sheets before settle, any infrastructure incident that left an invoice settled at BTCPay but uncredited on the operator's ledger. Idempotent — if the invoice is already credited (in the patron's ``credited_invoices``), returns success with credits_granted=0.

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• brain_restore_neon_schema

  Re-run ``ensure_schema()`` on every NeonVault this operator uses. Diagnostic / recovery tool for the case where the Neon HTTP SQL API is returning persistent 4xx errors and the operator suspects the schema isn't there or grants are wrong. Idempotent — uses ``CREATE TABLE IF NOT EXISTS`` so a successful re-run is harmless. Returns the per-step result. If any step raises, surfaces the Neon error message inline (0.31.0 reads the SQL error body that earlier wheels swallowed behind ``raise_for_status``). RESTRICTED to operator — requires proof (nsec-signed).

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• brain_scan_orphans

  Scan for orphaned thoughts with zero connections and optionally rescue them. Requires npub for credit billing.

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• brain_search_thoughts

  Full-text search across thought names and content. Requires npub for credit billing. ⚠️ NOT AUTHORITATIVE. Backed by the vendor's search index, which is incomplete on large brains (upstream: TheBrainTech/thebrain-api-quickstart-python#1) — it returns empty for the majority of thoughts that provably exist. A hit is real; an empty result is NOT proof of absence. Use for discovery of older/established thoughts, not as an existence check — verify by ID with get_thought before acting on "not found".

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• brain_service_status

  Check the health and configuration of this service. Free.

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• brain_session_status

  Check operator readiness. Returns the operator lifecycle state and clear guidance on what to do next. Free. Lifecycle states: - ready: Operator is warm and fully operational — vault AND pricing model verified. Proceed with tool calls. - warming_up: Operator is initializing (cold start). Try a tool call — it will warm up on demand. - misconfigured: Persistence rejected a query with a permanent SQL error (permission denied, missing relation). Paid tools will fail until the operator repairs the database — retrying does not help. - quota_exceeded: The persistence provider (Neon) answered HTTP 402 — the operator's database has exhausted its compute/storage quota, so the books are locked for billing. Paid tools fail; retrying does NOT help. The operator's Authority must restore capacity (upgrade the plan or wait for the quota reset). Free tools remain available. - not_registered: Operator has no Authority relationship yet. Call register_operator first. - no_identity: Operator nsec is not configured. Deployment issue.

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• brain_set_active_brain

  Set the active brain for subsequent operations. Requires npub for credit billing.

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• brain_set_pricing_model

  Set the active pricing model. RESTRICTED to operator. Requires a valid proof (Schnorr-signed kind-27235 event) proving the caller holds the operator's nsec.

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• brain_update_coupon

  Patch a coupon's editable fields. Pass only the fields you want to change. To set a cap to unlimited (NULL in the schema), pass ``clear_uses_per_patron=true`` or ``clear_total_uses=true``. Renaming the code is allowed — existing patron redemption rows survive (they key on coupon id). RESTRICTED to operator — requires proof.

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• brain_update_link

  Update link properties. Requires npub for credit billing.

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• brain_update_operator_credential

  Add or update a single operator secret field. Merges into the operator's stored credentials without touching the others — the field-level counterpart to re-delivering the whole bundle over Secure Courier. Use it to rotate one secret (a reissued ``btcpay_api_key``, say) without restating the six you did not change, where any field omitted from a courier reply is destroyed. The value is never echoed back. RESTRICTED to the operator — requires proof (nsec-signed kind-27235 or a cached dpop_token phrase); patron proofs are rejected.

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• brain_update_patron_credential

  Add or update a single patron credential field. Merges into existing stored credentials without affecting other fields. Useful for setting an account identifier after OAuth, changing a default brain, etc. Free. Proof of npub ownership is required — this is a write to the patron's sensitive credential vault.

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• brain_update_thought

  Update a thought's properties and/or its parent in one call. Requires npub for credit billing. Sets any subset of {name, label, colors, kind, ac_type, type, parent} on a single thought. Reparenting via ``new_parent_id`` *replaces* the existing parent link (the old parent child-link is deleted and a new one created); it does not add an additional parent.

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