UniProt Protein Features by Category

proteins/protein-features

Sequence features of one UniProtKB accession (for example P04637, P02144) in one category from the EMBL-EBI Proteins API: DOMAINS_AND_SITES, MOLECULE_PROCESSING (chains, peptides, signal), MUTAGENESIS, PTM, SEQUENCE_INFORMATION, STRUCTURAL (helices, strands, turns), TOPOLOGY or VARIANTS. Each feature has its type, description and begin and end positions. At most 200 features are returned, in the service's order, with totalFeatures and a truncated flag; evidence lists are omitted. UniProt data, served by Eden Engine; not an official UniProt or EMBL-EBI product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

UniProt Consortium

Data from UniProt (UniProt Consortium), served by the EMBL-EBI Proteins API (https://www.ebi.ac.uk/proteins/api). Cite: The proteins API: accessing key integrated protein and genome information, doi:10.1093/nar/gkx237. Served by Eden Engine; not an official UniProt or EMBL-EBI product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

Install it Create an account

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "proteins/protein-features" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "proteins/protein-features" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "proteins/protein-features", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "proteins/protein-features", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 25, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "accession",
    "category"
  ],
  "properties": {
    "category": {
      "enum": [
        "DOMAINS_AND_SITES",
        "MOLECULE_PROCESSING",
        "MUTAGENESIS",
        "PTM",
        "SEQUENCE_INFORMATION",
        "STRUCTURAL",
        "TOPOLOGY",
        "VARIANTS"
      ],
      "type": "string",
      "description": "Feature category. VARIANTS can be over a thousand entries for a well-studied protein (TP53 has 1,369) and is cut to the first 200."
    },
    "accession": {
      "type": "string",
      "pattern": "^([OPQ][0-9][A-Z0-9]{3}[0-9]|[A-NR-Z][0-9]([A-Z][A-Z0-9]{2}[0-9]){1,2})$",
      "description": "UniProtKB accession in upper case, for example P04637 (human p53), P01308 (insulin) or P02144 (myoglobin)."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "accession",
    "features",
    "totalFeatures",
    "returned",
    "truncated"
  ],
  "properties": {
    "taxid": {
      "type": [
        "integer",
        "null"
      ]
    },
    "features": {
      "type": [
        "array",
        "null"
      ],
      "items": {
        "type": [
          "object",
          "null"
        ],
        "properties": {
          "end": {
            "type": [
              "string",
              "null"
            ]
          },
          "ftId": {
            "type": [
              "string",
              "null"
            ]
          },
          "type": {
            "type": [
              "string",
              "null"
            ]
          },
          "begin": {
            "type": [
              "string",
              "null"
            ]
          },
          "ligand": {
            "type": [
              "object",
              "null"
            ],
            "additionalProperties": true
          },
          "category": {
            "type": [
              "string",
              "null"
            ]
          },
          "molecule": {
            "type": [
              "string",
              "null"
            ]
          },
          "ligandPart": {
            "type": [
              "object",
              "null"
            ],
            "additionalProperties": true
          },
          "description": {
            "type": [
              "string",
              "null"
            ]
          },
          "alternativeSequence": {
            "type": [
              "string",
              "null"
            ]
          }
        },
        "additionalProperties": true
      },
      "description": "Features in the service's order, without evidence lists."
    },
    "returned": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Features in `features` (at most 200)."
    },
    "accession": {
      "type": "string"
    },
    "entryName": {
      "type": [
        "string",
        "null"
      ]
    },
    "truncated": {
      "type": [
        "boolean",
        "null"
      ],
      "description": "True when totalFeatures is above returned."
    },
    "totalFeatures": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Features of the requested category the entry has."
    },
    "sequenceLength": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Length of the protein sequence."
    }
  },
  "description": "Shaped feature list.",
  "additionalProperties": true
}