Rust Crate Versions

cratesio/crate-versions

The published versions of one Rust crate on crates.io, newest first: version number, publish date, downloads, yanked flag, licence, minimum Rust version, package size and features. Use per_page 1 for just the latest version. Data from crates.io, https://crates.io, passed through unmodified and served by Eden Engine; not an official crates.io 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

crates.io

Crate metadata from crates.io, https://crates.io, the Rust community's package registry, fetched through its public API under the crates.io data access policy (https://crates.io/data-access). Passed through unmodified and served by Eden Engine; this is not an official crates.io or Rust Foundation 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.

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agent

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

// 2. inspect: price and input schema
omnial_inspect({ tool: "cratesio/crate-versions" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "cratesio/crate-versions" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "cratesio/crate-versions", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "cratesio/crate-versions", 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 26, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "crate"
  ],
  "properties": {
    "crate": {
      "type": "string",
      "pattern": "^[A-Za-z0-9_-]{1,64}$",
      "description": "Crate name, for example serde, tokio, clap."
    },
    "per_page": {
      "type": "integer",
      "default": 10,
      "maximum": 100,
      "minimum": 1,
      "description": "How many versions to return, 1 to 100, default 10."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "results"
  ],
  "properties": {
    "results": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "num"
        ],
        "properties": {
          "id": {
            "type": "integer",
            "description": "crates.io version id."
          },
          "num": {
            "type": "string",
            "description": "Version number."
          },
          "crate": {
            "type": "string",
            "description": "Crate name."
          },
          "yanked": {
            "type": "boolean",
            "description": "True when the version was yanked."
          },
          "license": {
            "type": [
              "string",
              "null"
            ],
            "description": "SPDX licence expression."
          },
          "features": {
            "type": "object",
            "description": "Feature flags and what each enables.",
            "additionalProperties": true
          },
          "downloads": {
            "type": "integer",
            "description": "All-time downloads of this version."
          },
          "crate_size": {
            "type": [
              "integer",
              "null"
            ],
            "description": "Size of the package in bytes."
          },
          "created_at": {
            "type": "string",
            "description": "When the version was published, ISO 8601."
          },
          "updated_at": {
            "type": "string",
            "description": "When the version record last changed, ISO 8601."
          },
          "published_by": {
            "type": [
              "object",
              "null"
            ],
            "description": "The user who published the version.",
            "additionalProperties": true
          },
          "rust_version": {
            "type": [
              "string",
              "null"
            ],
            "description": "Minimum supported Rust version."
          },
          "yank_message": {
            "type": [
              "string",
              "null"
            ],
            "description": "Reason given when yanked."
          }
        },
        "additionalProperties": true
      },
      "description": "Versions, newest first."
    }
  },
  "additionalProperties": true
}