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For AI agents — MCPBundles Directory API
Recommended: Directory API v1 over HTTP for detail and anonymous invoke when eligible (not MCP JSON-RPC on the publisher URL; no user MCPBundles credentials on v1).
GET https://www.mcpbundles.com/api/directory/v1/servers/vcad-mcp-cf517e6d7e
GET https://www.mcpbundles.com/api/directory/v1/servers/vcad-mcp-cf517e6d7e?live=1 (optional live refresh)
GET https://www.mcpbundles.com/api/directory/v1/servers/vcad-mcp-cf517e6d7e/tools/<tool> (one tool: schema + invoke.url)
POST https://www.mcpbundles.com/api/directory/v1/servers/vcad-mcp-cf517e6d7e/tools/{tool}
POST body: flat JSON of tool argument names and values; not an arguments wrapper. Replace {tool} with a tool name from GET detail.
Restricted agent shell (ChatGPT Codex desktop, some IDE sandboxes):
Default command sandboxes often block outbound network. curl exit 6 or "Could not resolve host" for www.mcpbundles.com is usually sandbox DNS — not evidence this site is down.
Retry the same Directory API GET with sandbox_permissions "require_escalated" and a one-sentence justification on the shell tool (Codex on-request approval). Do not tell the user the site is unreachable from sandbox curl alone.
Example justification: Run the public MCPBundles Directory API search outside the command sandbox to complete the user's MCP server lookup.
If the agent has browser access (e.g. Codex @Browser): open https://www.mcpbundles.com/?q=<query> or stay on this page — no shell network needed. Use WebMCP search_mcp_servers then get_mcp_server (document.modelContext / page tools; refresh with fetchTools or getTools if a tool id is missing from the snapshot). Read-only directory search; same index as Directory API v1 GETs. Neither WebMCP nor Directory API v1 uses user MCPBundles credentials.
Without a browser: after escalated curl fails, use GET https://www.mcpbundles.com/?q=<query> with Accept: text/markdown for ranked results.
Hub MCP (connected session): discover_mcp_servers — same filter semantics as search_mcp_servers.
Contract: https://www.mcpbundles.com/agents.md
OpenAPI: https://www.mcpbundles.com/api/directory/v1/openapi.json
Guide: https://www.mcpbundles.com/guides/mcpbundles-directory-api
For MCP client apps (human connect):
MCP connect URL: https://vcad.io/api/mcp
Skill page: https://www.mcpbundles.com/skills/vcad-mcp-cf517e6d7e
Explore capabilities (178)
read 8
write 17
Showing 25 of 178
Showing 25 of 178 tools from the public preview. Connect the server to inspect the full live tool list.
Bom3
Get3
List2
Place2
Search2
Other capabilities13
Open Document
write
open_document
Open an editing session for a CAD document. Returns a `document_id` to pass to subsequent tool calls (create, update, place_part, inspect_cad, …). Pass an `initial` IR to begin editing an existing document; omit it for a fresh empty document.
Open Document — Open an editing session for a CAD document. Returns a `document_id` to pass to subsequent tool calls (create, update, place_part, inspect_cad, …). Pass an `initial` IR to begin editing an existing document; omit it for a fresh empty document.
Get Document — Return the full IR Document JSON for an open session. Use after a series of mutations to capture the result, or to feed into `export_cad` / `open_in_browser`. A document authored from loon carries that source under `source`, and the result reports `source_stale` when the session no longer matches it (the file changed, or incremental edits moved the session away from it). Very large documents come back as a compact artifact handle instead ({document_id, artifact_url, manifest with sha256, …}) — d
Close Document — Close a document session and free its memory. Idempotent — closing an unknown id reports `closed: false`.
Save Document — Persist a live session under a name so it can be reopened with load_document. On the hosted server the save is durable: a signed-in user's save goes to their vcad.io account under the (normalized) name; an anonymous save returns an unguessable `saved_…` key to reopen with. On a local/stdio server it writes `<name>.vcad` under VCAD_MCP_STATE_DIR (or the working directory) — plus `<name>.loon` when the document knows the source it was authored from, so the file and the session can't diverge withou
Load Document — Reopen a save_document save into a fresh session and return its new document_id. Pass the same name you saved under (or the `saved_…` key an anonymous save returned). The cheap way to resume a board/part across runs instead of rebuilding it. Pass `path` instead to open a `.loon` source file (evaluated on load) or a `.vcad` document from disk — that session stays bound to the file and reports `source_stale` if the two drift apart.
Checkpoint Document — Snapshot a session's current state as a durable, restorable checkpoint. Returns a `checkpoint_id`. Use it at known-good milestones (post-schematic, post-place, post-route) so you can rewind with branch_from instead of rebuilding. The full IR is captured — the netlist (the most expensive, most stable artifact) is the anchor. On a durable deploy a checkpoint survives a redeploy; check server_info for durable:true.
Get your MCP into directories
A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Use the MCP endpoint listed on this page in your MCP client configuration. One-click install pills support Claude, Cursor, VS Code, and other hosts. Copy the remote MCP URL if your client needs a manual entry.
How many tools does vcad provide?
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Branch From Checkpoint — Re-open a checkpoint (from checkpoint_document). Omit `into` to BRANCH into a fresh session id — a variant to explore. Pass `into: <document_id>` to RESTORE the checkpoint into an existing session in place (same id). The cheap undo for a bad route or place: rewind to a good state rather than rebuilding the netlist.
Continue Document — Open the user's vcad.io part as an editing session from a 'Continue in Claude' handoff (a share `token`, or an inline `doc` for accountless handoffs). The web app hands you this in the starter prompt; call this first, then render_view it and continue the user's work. Returns a `document_id` for subsequent tool calls. The geometry is fetched server-side — never paste it.
Server Info — Report the running build's identity: version, git sha (if stamped), tool count, enabled packs, whether the kernel WASM loaded, and whether sessions are durable (`durable` — survive a redeploy/cold start, vs. in-memory only). Call this to confirm a tool exists in THIS build before assuming a stale or version-skewed deploy, and to check durable:true before relying on checkpoints across a long session.
List Tool Packs — List the optional tool packs and whether each is currently enabled, with its tool count. Packs gate large domain surfaces (ecad, physics, sheet_metal, dfm, …) off the always-on core; a smaller surface costs fewer schema tokens and improves tool selection. Use set_tool_packs to enable/disable them at runtime.
Set Tool Packs — Enable or disable optional tool packs at runtime (see list_tool_packs for names). Pass `enable` and/or `disable` as arrays of pack names, or `set` to replace the enabled set outright (an array, or the string "all" / "none"). On stdio/persistent connections the tool list updates immediately and emits notifications/tools/list_changed; on the stateless HTTP transport the choice is saved for a signed-in user and applies on the next request (no push notification there). Disabled-pack calls keep retur
Quote Manufacturing — Quote manufacturing a part: measures the design, runs light DFM, and returns margin-inclusive price options per fab (pcb/cnc/3dprint/sheet_metal/cast_metal). Pass `ir` (inline Document — stateless, no open_document needed, serverless-safe, parallel-safe) OR a `document_id` from an open session. Persists a quote + a QUOTED order. Phase 0 is quote-only — prices are estimates and ordering/payment ship next; no money moves. For sheet_metal the result includes `fab_handoff`: curated US instant-quote
Get Order Status — Return the lifecycle row for a Fabricate order (state, fab, totals, event timeline). Read-only.
List Orders — List the caller's Fabricate orders, newest first. Optional status filter and limit. Read-only.
Authorize Spend — Propose a spend authorization for a QUOTED order. Creates a DB-backed, revocable authorization (status pending_human) and records the proposal on the session's event log. A HUMAN must approve it in the vcad app before place_order can charge — the agent cannot approve its own spend; when the client supports URL elicitation the approval page is offered to the human in-band. Flag-gated (test-mode); no money moves here.
Place Order — Place a QUOTED order once its authorization has been human-approved: performs one atomic wallet debit and moves the order to PAID (fab submission follows in a later step). Refuses if the authorization is still pending approval, if the geometry changed since the quote (doc_hash mismatch — re-quote), or if the design's persisted clearance claims fail or cannot be re-verified (fail-closed receipt gate). Flag-gated (test-mode).
Get Order Feed — App-only: the order-dock feed for a document — orders with fused lifecycle chips, joined quote details, authorization status (+ approve URL while pending), receipt status, and wallet balance. Polled by the inline viewer; read-only.
Create BOM — Create a project bill of materials — the deliverable that collects every manufactured part (PCBs, sheet metal, 3D prints; link quote_manufacturing quotes by quote_id) and COTS part (bearings, shafts, screws, magnets; link search_mechanical_parts entries by catalog_id) in one place. Optionally attach a document_id and assembly notes. Pass the full `lines` array to build the whole BOM in ONE call — recommended, since BOMs are in-memory per server instance. When document_id names a resident session
Add BOM Line — Append one line to a BOM from bom_create. kind 'manufactured': name + process (or a quote_id from quote_manufacturing, which auto-fills process, vendor, qty, and the landed unit price) plus optional artifact path and document_id. kind 'cots': name/spec/example_pn/vendor/qty/unit_price_usd, or a catalog_id from search_mechanical_parts to auto-fill spec and a price-band-midpoint estimate. Returns the running totals.
Export BOM — Render a BOM as markdown (the shareable deliverable: manufactured-parts table with vendors/prices/artifact sources, COTS table with specs and example PNs, totals, assembly notes), csv (flat, spreadsheet-ready), or json (the full object). Totals include a landed-cost shipping estimate reusing the Fabricate shipping model (per distinct vendor; quote-linked lines are already landed). Also returns a vcad.receipt/1 `receipt_claim` (domain 'bom') carrying the cost estimate for a DesignReceipt — inform
Search Mechanical Parts — Spec-search the curated mechanical COTS catalog (offline) — the mechanical sibling of search_electronic_parts: 608/625/688/600x-series bearings, precision ground shafts (3-12 mm), shaft collars, flange couplings, M2/M3 standoffs, machine screws, and ferrite/ceramic disc+ring magnets (Y30/Y35/C8). Filter by type + dimensions (bore_mm, od_mm, width_mm, thread, length_mm, …) and/or free text. Returns spec + example part number + a typical price band — street-price ESTIMATES, not live quotes. Use th
Share Session — Share this session as a live, watchable link (mcp.vcad.io/live/<id>). Sessions are PRIVATE by default — this is the explicit opt-in that makes one viewable. Anyone with the returned link can watch the geometry + full event log (read-only) and drop annotations, so the result includes a clear public-link warning. Revoke anytime with unshare_session.
Unshare Session — Revoke a session's live link — it goes dead and the session is private again.
Search Stdlib Parts — Search the stdlib parts library (fasteners, bearings, …). Matches across name, category, synonyms, and catalog part numbers (McMaster / ISO / DIN). Returns an array of {id, name, category, params, xrefs, synonyms} — use `id` with `place_part`. Part numbers like '91290A320' or 'ISO 4762' match directly.
Place Part — Insert a stdlib part into the session's document. Takes a `document_id`, a `path` (from `search_parts.id`), and an optional `params` map; missing params use declared defaults. The part remains parametric — end users can edit its params from the feature tree.
Showing the first 25 tools — full list and schemas: Directory API.
MCPBundles probed 178 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
What authentication does vcad require?
No provider sign-in was required during MCPBundles' probe. Your client may still need MCPBundles credentials depending on how you connect.
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