Open-source utility layer

Forty local-first tools every agent keeps rebuilding.

Name: Delx Witness Protocol
Availability: InStock
Author: Delx

Delx Agent Utilities gives MCP clients, CLI workflows, Python runtimes, crawlers, and registries a deterministic toolkit for inspecting websites, APIs, domains, x402 endpoints, tokens, structured data, and operator basics without calling an LLM.

GitHub repo PyPI package Docs

Tools

stateless utilities

License

MIT

open source

Runtime

MCP

plus CLI and Python

State

no DB, cache, or telemetry

Why this exists

The utilities started inside the Delx Protocol runtime, then moved into a standalone MIT package. That keeps the witness protocol focused on continuity and recovery while giving the broader agent ecosystem a reusable utility layer that works without Delx accounts, API keys, sessions, or hosted state.

Before an agent installs a tool

Inspect the domain, docs, OpenAPI, x402 readiness, security.txt, TLS, and robots policy before trusting a new service.

util_domain_trust_report

Before a crawler spends budget

Summarize a website, extract links, detect feeds, check sitemap health, and decide whether deeper crawling is worth it.

util_website_intelligence_report

Before a runtime integrates an API

Check docs, schemas, authentication hints, OpenAPI availability, pricing pages, support paths, and integration blockers.

util_api_integration_readiness

Privacy posture

No API keys required by the package.
No DB, telemetry, model calls, or background state.
Networked tools only call user-supplied URLs, RDAP, or DNS-over-HTTPS.
Fetch utilities block private, loopback, link-local, reserved, and multicast targets after DNS resolution.

Tool families

Encoding and parsing

12 tools

util_json_validate
util_token_estimate
util_uuid_generate
util_timestamp_convert
util_base64
util_hash
util_regex_test
util_cron_describe
util_http_codes
util_jwt_inspect
util_csv_to_json
util_json_to_csv

Web extraction

6 tools

util_page_extract
util_open_graph
util_links_extract
util_forms_extract
util_contact_extract
util_feed_discover

Network probes

8 tools

util_url_health
util_robots_inspect
util_sitemap_probe
util_tls_inspect
util_security_txt_inspect
util_http_headers_inspect
util_dns_lookup
util_rdap_lookup

x402 and API intel

5 tools

util_x402_server_probe
util_x402_resource_summary
util_x402_server_audit
util_api_health_report
util_openapi_summary

Identity and contact

1 tools

util_email_validate

Composite reports

8 tools

util_website_intelligence_report
util_domain_trust_report
util_docs_site_map
util_pricing_page_extract
util_company_contact_pack
util_api_integration_readiness
util_login_surface_report
util_content_distribution_report

MCP client

{
  "mcpServers": {
    "delx-utils": {
      "command": "delx-utils-mcp"
    }
  }
}

CLI

pipx install "delx-agent-utilities[mcp]"
delx-utils manifest
delx-utils call util_url_health --json '{"url":"https://example.com"}'

Python

from delx_agent_utilities import call_util_tool

result = await call_util_tool("util_url_health", {
    "url": "https://example.com"
})

Product boundary

The open-source Python package is free and local-first. The hosted Delx API can still expose selected report endpoints with attribution, quota, and x402 payment rails. That monetization boundary belongs to hosted utility workloads, not to Delx Protocol witness primitives.

Protocol: free witness, continuity, recovery, recognition.

Utilities package: MIT, no hosted account required.

Hosted utilities: quota, attribution, and future commerce rails.

Website Intelligence Report

$0.01

Understand whether a website is useful, trustworthy, and agent-readable before deeper crawling.

canonical /api/v1/utilities/website-intelligence-report

schema /api/v1/tools/schema/util_website_intelligence_report

Try hosted route

Domain Trust Report

$0.01

Decide whether a domain looks safe enough for an agent to browse, cite, or transact with.

canonical /api/v1/utilities/domain-trust-report

schema /api/v1/tools/schema/util_domain_trust_report

Try hosted route

API Integration Readiness

$0.01

Judge whether an API is easy and safe for an agent runtime to integrate.

canonical /api/v1/utilities/api-integration-readiness

schema /api/v1/tools/schema/util_api_integration_readiness

Try hosted route

MCP Server Readiness Report

$0.05

Decide whether an MCP server is safe and usable enough for agents before installation or payment.

canonical /api/v1/utilities/mcp-server-readiness

schema /api/v1/tools/schema/util_mcp_server_readiness_report

Try hosted route

x402 Server Audit

$0.01

Check whether a paid agent endpoint exposes usable x402 discovery and payment requirements.

canonical /api/v1/utilities/server-audit

schema /api/v1/tools/schema/util_x402_server_audit

Try hosted route

Company Contact Pack

$0.01

Find structured contact and support paths before an agent escalates, sells, partners, or files a report.

canonical /api/v1/utilities/company-contact-pack

schema /api/v1/tools/schema/util_company_contact_pack

Try hosted route

Live hosted smoke check

curl -sS "https://api.delx.ai/api/v1/utilities/domain-trust-report?url=https://ontology.delx.ai"

Use the hosted route when an agent needs remote execution. Use the PyPI package when the agent can run tools locally and should keep the workflow self-contained.

Next evolution

Split the internal web module by domain in v0.2.0.
Add one test file per utility.
Expose configurable per-tool timeouts.
Keep the no-secret, no-state contract intact.