Agent Utilities MCP server

Agent Utilities MCP

Connect a local stdio MCP client to 36 paid utility APIs for HTML extraction, JSON validation, agent configuration checks and product data. This MIT-licensed adapter runs locally; the hosted API is a paid service.

Tool catalog · Installation guide · Pricing · Policies and support

VS Code users: open the setup link and private-key configuration. Detailed instructions are included in this source repository.

Pay per call with USDC

For agents with a Circle Gateway balance, a separate standalone USDC client supports Base mainnet payments without a $5 Stripe pack. Download and preview the example. It pins network and contracts, caps each call, and saves signed requests privately for recovery. Preview is offline; preparation and submission require separate explicit commands. Real execution spends real USDC. This client is separate from the Stripe-funded MCP adapter and is not included in the immutable MCPB 0.3.0 release.

Try the shopping example without an account

Clone this repository and preview the supplied cart with Node.js 22+:

cd examples/cart
shasum -a 256 -c cart-workflow.mjs.sha256
node cart-workflow.mjs --preview cart-example.json

Preview validates the input and prints the three-step plan offline, with no API key, network request or charge. It does not execute the tools. The included expected output is a local fixture: German price strings become decimal amounts, guarded patches update the supplied cart snapshot, and cost reconciliation returns a known total of €45.92. Tax is unknown, so the final total remains null.

To run those three operations against the hosted service, privately set AGENTUTILITIESAPI_KEY in your process environment and explicitly choose:

node cart-workflow.mjs --execute cart-example.json

Execution spends existing service credits. The recipe enforces per-call price ceilings totaling at most $0.0013 (0.13 cents) across its three logical calls. It stops if a discovered price is too high or a later price exceeds the authorized ceiling. Completed steps stay charged if a later step fails. Each step returns its debit receipt and recovery information; do not rerun the entire recipe after an uncertain response. Read the recipe instructions before execution. This example does not buy credits or place a merchant order.

The recipe is a separate standalone download, not part of the immutable v0.3.0 MCPB bundle. You can also get it from the workflow page. The generic MCP adapter's spending behavior remains as described below.

Read the material directly from an agent

No account or key is needed to read contracts, examples, prices and guides:

curl --fail --silent --show-error \
  https://agent-utilities.agent-utilities.workers.dev/v1/content/index?utm_source=github

Shortened. The full README is on GitHub.