# Boltz API — AI Connector Boltz API publishes 10 MCP tools to Claude. Marketplace availability, tool surface, verification tier, and what Node8 measured against the live endpoint. Source: https://node8.ai/ai-connectors/healthcare/boltz-api/ --- [AI Connectors](https://node8.ai/ai-connectors/) · [Healthcare & Life Sciences](https://node8.ai/ai-connectors/healthcare/) # Boltz API Structure prediction, library screening and binder design from chat Listed in Claude · 10 published tools · Verified partner [Claude connector docs](https://api.boltz.bio/docs) [boltz.bio](https://boltz.bio/) Overview ## What Boltz API does Boltz publishes models for biomolecular structure prediction, and this is the official server for its hosted API. The described workflows are structure and binding interaction prediction, screening small molecule or protein libraries against a target, and de novo design of small molecules and protein binders. Each workflow estimates its cost before running, which matters because compute for this work is metered rather than trivial, and finished results download into the workspace as structured files rather than being summarised in a reply. Ten tools are declared. An API key is required and the endpoint refuses anonymous listing requests. ### Who it is for Computational chemists and structural biologists running prediction jobs. ### Tool surface Ten tools cover job submission, cost estimation and result retrieval according to the listing, but a 401 blocks enumeration, so that division is the publisher's account of it. Availability ## Where Boltz API is listed Boltz API is listed in the Claude connectors directory only. Boltz has no app under the same domain in the ChatGPT directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them. The MCP server behind a Claude connector is usually the same server a ChatGPT app would need, so the absence is a distribution decision rather than a technical one. Claude listing ## In the Claude connectors directory Boltz API publishes 10 tools to Claude. That is a mid-sized surface: 45% of the 1,253 Claude-listed connectors expose fewer. The median Claude-listed connector filed under Healthcare & Life Sciences publishes 6, so this one runs 4 tools above its bucket's median and ranks 10th of 51 by tool count. It falls in the 7-10 tools band, which holds 14.6% of the Claude directory. Boltz API publishes a remote MCP endpoint. Claude connects to it over HTTP; there is nothing to install locally. Every connector in the Claude directory is remote, all 1,253 of them, so transport is not a differentiator there. Publisher Boltz Verification Verified partner (37.8% of the Claude directory) Filed under Health & Life Sciences Endpoint `https://mcp.boltz.bio/mcp` Documentation [Publisher setup docs](https://api.boltz.bio/docs) Published tools 10 · 7-10 tools band Depth rank in Healthcare & Life Sciences 10 of 51 Snapshot August 2026 Boltz API carries partner verification in the Claude directory, which 474 of 1,253 listings do (37.8%). That is a review step past self-publishing, not an Anthropic-built server. In the publisher's words ## How Boltz describes it > The official Model Context Protocol (MCP) server for the Boltz API. Predict molecular structures and binding interactions, screen small-molecule and protein libraries against a target, and design small molecules and protein binders — all from chat. Each workflow estimates cost before running, then downloads structured results to your workspace when the job completes. Quoted from the connector's own Claude directory listing as captured in August 2026. Node8 did not write it and does not vouch for it. Same company ## More from Boltz ### [Boltz](https://node8.ai/ai-connectors/education/boltz/) Structure prediction, molecular screening and binder design ChatGPT Nearby ## Other Healthcare & Life Sciences connectors ### [Tamarind Bio](https://node8.ai/ai-connectors/healthcare/tamarind-bio/) Computational biology jobs run from chat Claude · ChatGPT ### [EDEN by Basecamp Research](https://node8.ai/ai-connectors/healthcare/eden-by-basecamp-research/) Antimicrobial peptide design and vaccine target scoring with EDEN Claude ### [Achieve Harmony](https://node8.ai/ai-connectors/healthcare/achieve-harmony/) Guided breathing sessions inside the chat ChatGPT ### [AdisInsight](https://node8.ai/ai-connectors/healthcare/adisinsight/) Drug pipeline and clinical trial intelligence from AdisInsight Claude ### [SaveHealth](https://node8.ai/ai-connectors/healthcare/savehealth/) Prescription discount price comparison across US pharmacies ChatGPT ### [Scholar Gateway](https://node8.ai/ai-connectors/healthcare/scholar-gateway/) Peer-reviewed sources with DOI-linked citations Claude · ChatGPT [All 101 Healthcare & Life Sciences connectors](https://node8.ai/ai-connectors/healthcare/) This is an independent catalogue entry compiled by Node8 from Boltz API's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Boltz, and inclusion here is not an endorsement. ## Want your company reachable inside ChatGPT and Claude? Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot. [See how it works](https://node8.ai/mcp) Book a strategy session