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ToolCargo

A practical MCP workflow

Research PubChem chemical identifiers and properties with AI and MCP

Start with PubChem name candidates, choose an exact CID for inspection and keep original property values, units and source identity together. A name match is not proof of the compound you intended.

Built for: Research agents building source-linked chemical identifier and property summaries.

What to connect

Create a ToolCargo account and use OAuth or an API key with a supported MCP client. Hosted connectors share your plan’s call quota; connect each required MCP endpoint separately. Review provider permissions before starting.

Client setup and test status · Current plans and limits

Run the workflow

  1. 1. Resolve one complete name

    Use pubchem_resolve_name with a public chemical name and a small limit. Retain all returned candidate IDs, the source list count, ambiguity and truncation rather than silently selecting a result.

  2. 2. Inspect exact source identity

    Call pubchem_compound_properties with an exact CID string. Identifying metadata is checked before the property table. If identity metadata is unavailable, report existence as unknown rather than infer a nonexistent compound.

  3. 3. Keep property semantics visible

    Retain source formula, InChIKey, IUPAC name and calculated molecular weight in g/mol. Preserve original decimal text or numeric source type and missing values; identity and property titles stay distinct.

  4. 4. Cite the source and its limits

    Link the exact PubChem record and identify ToolCargo projection. Names and calculated properties do not establish sample purity, hazard classification, regulatory status or suitability. Contributor rights and NCBI notices remain separate.

A prompt to try

Use ToolCargo PubChem to resolve aspirin and inspect an exact returned CID. Preserve any ambiguity, molecular formula, original calculated molecular weight and g/mol units, source identifiers and retrieval times. Keep missing identity and properties explicit. Cite PubChem/NCBI and identify ToolCargo modifications; do not infer purity, safety or medical use.

What a useful result looks like

A bounded candidate list and exact CID property card with original values, units, missing fields and source context.

Know the limits

Selected chemical identifier and computed-property metadata only. No structures, images, assays, medical or safety annotations, synthesis instructions, bulk extraction or automatic name selection. Source calls are separately fetched, mutable and subject to shared conservative throttling; there is no immutable revision or shared result cache.

Common questions

Does a name match establish the exact chemical I meant?

No. PubChem resolves indexed names and synonyms, which can produce multiple candidates or a specific stereochemical record. Review the exact CID before using its properties.

Is molecular weight a measured sample mass?

No. This is PubChem calculated molecular weight in g/mol. It is separate from measured sample mass, purity, monoisotopic mass and dosing.

Does missing identity metadata mean the compound does not exist?

No. The source response can mean that identifying description metadata is unavailable. The connector keeps existence unknown rather than infer absence.

References and tool documentation

Use the provider’s documentation to check the underlying concepts, and ToolCargo’s references for the exact tools, inputs and limits.

Tool references for this workflow

Continue with the tools

View the main connectorSet up your client

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