ELYREON JSON Schema Payload Validator

co.com.elyraonPublished by elyraon.com.cov1.0.1Updated Oct 25, 2026

JSON Schema validator for API payloads via MCP: bounded checks and structured pass/fail errors.

The publisher's own server: Video Transcript

VerifiedStreamable HTTPWeb executableDeveloper ToolsData & Analytics

Overview

AI-generated overview

A remote MCP server that validates JSON payloads against a bounded JSON Schema 2020-12 subset and returns structured pass/fail errors.

What you can do
Validate a JSON payload against a supplied schema and get a structured pass/fail result with one validation error reported per call. Inputs outside the supported subset are rejected rather than evaluated. The same validation is also reachable over direct HTTP for non-MCP use.
When to use it
Useful when an assistant needs a quick, deterministic check that an API payload matches a simple schema before sending it, and when a hosted validator is preferable to running one locally.
Requirements
A remote Streamable HTTP endpoint; append /mcp to the base address. A bearer token in the Authorization header is required, obtained from the trial endpoint. Network access is needed, and some HTTP clients may be blocked by Cloudflare.
Before you install
The token is a credential and must be kept private. Free quota is limited per token, per service and per IP. Schemas using references, regex, formats or combinators are rejected, and a pass does not certify runtime behavior. The provider states it stores no input bodies or schemas but retains token hashes and usage metadata for 30 days.

Installation

In SourceWeft

  1. Open ELYREON JSON Schema Payload Validator in the dashboard and add it to a workspace.
  2. Connect Authorization token credentials. They are stored privately and never shown on public pages.
  3. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/co.com.elyraon%2Fpayload-validator/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "elyreon-json-schema-payload-validator": {
      "type": "http",
      "url": "https://elyreon-payload-validator.colt2822.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_TOKEN>"
      }
    }
  }
}

README

ELYREON Payload Validator

Small, deterministic first-party distribution test in the existing public Decision Gateway repository. This isolated Worker validates JSON against an explicitly bounded JSON Schema 2020-12 subset. It does not call Nace.AI, expose Drex inference, execute uploaded code, or accept payments.

Endpoint: https://elyreon-payload-validator.colt2822.workers.dev

MCP: append /mcp. Get a free bearer token at POST /trial with JSON {"source":"github"}; send {"test":true,"source":"github"} for controlled evaluations. Configure the bearer header in any Streamable HTTP MCP client, discover validate_payload, and call with {schema,payload}. Direct HTTP uses POST /validate with the same token and input.

Install the Agent Skill in the client's skill directory. Portable git install:

sh
git clone --depth 1 https://github.com/colt2822/Drex-Decision-Gateway-for-Coding-Agents.gitmkdir -p ~/.agents/skills/elyreon-payload-validatorcp Drex-Decision-Gateway-for-Coding-Agents/distribution/payload-validator/skills/elyreon-payload-validator/SKILL.md ~/.agents/skills/elyreon-payload-validator/

Limits: 32 KiB request, depth 12, 2048 values, 128 schema nodes, 3-second body timeout; one validation error. Free quota: 20 invocations/token/day, 1000 invocations/service/day, 100 enrollments/service/day, 5 enrollments/IP/hour; edge limit 30 requests/IP/minute/location. Schema references, regex, formats and combinators are rejected. Supported keywords are documented in the skill. Validation does not certify runtime behavior. Malformed/unsupported input returns REJECTED; invalid data returns completed FAIL.

Deployment has a separate Worker and D1 database, no custom routes or other production bindings. Worker stores no input bodies, schemas or raw IPs. Token hashes and usage metadata are retained 30 days. Source is client-claimed; tokens are not verified customers. PHOENIX monitoring uses its existing controller timer and CRM; all five seats remain intact. Controlled tests are marked synthetic. No outbound sender or payment system is invoked. Provider inference cost is zero; hosting costs require billing evidence.

server.json is Official MCP Registry metadata. /.well-known/ai-catalog.json is a self-hosted catalog, not proof of a third-party listing. /x402-bazaar.json is inactive draft metadata with no accepted payment methods; it is not a paid Bazaar listing.

Validation: npm ci, npm test, python3 tests/reference_check.py, python3 -m unittest discover -s tests -p 'test_monitor.py', npm run dry-run. Local HTTP acceptance uses wrangler d1 execute elyreon-payload-validator --local --file migration.sql, then wrangler dev --port 18741 --var PRIVACY_SALT:local-only --var SYNC_TOKEN:local-only, then python3 tests/http_check.py.

Deploy with npm run deploy only to the named isolated Worker, preserving secrets. Roll back using wrangler rollback VERSION_ID; for the first deployment, disable only this Worker's workers.dev endpoint. Never change existing website routes. Secrets SYNC_TOKEN, TEST_TOKEN and PRIVACY_SALT are kept outside git. Registration authentication files must remain outside git.

The Official MCP Registry listing is co.com.elyraon/payload-validator version 1.0.0. Registry readback, clean public installation and MCP acceptance, and receipt attribution are recorded separately. This is controlled evidence, with zero independent customers or revenue.

VS Code MCP configuration prompts privately for the free token. The generic Agent Skill can also be installed in clients that read SKILL.md; no native VS Code GUI or other desktop client acceptance is claimed. Default Python urllib requests are blocked by Cloudflare error 1010; the standard MCP Python SDK, httpx and curl succeeded. No Cloudflare security setting was changed.

The PHOENIX monitor runs as an error-isolated post-command on the existing controller service, throttled to one network pass per 15 minutes. It records readback, usage, repeat tokens, per-seat responsibilities and explicit unknown hosting cost in the existing CRM. It reads existing demand feeds and never sends messages. See the systemd drop-in. Synthetic tests remain excluded from customer and installation totals.

Source: distribution/payload-validator/README.md at commit 265f4f3

Tools

0
This server asks for a credential such as an API key, so SourceWeft could not read its tools without one and has not indexed them.

Version history

1
  1. v1.0.1LatestOct 25, 2026

Score

85% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts

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