Signal Oracle
Pay-per-call change-intelligence feeds for AI agents over x402 (deps, security, regs, tariffs)
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"signal-oracle": {
"url": "https://oracles-production.up.railway.app/mcp"
}
}
}Remote endpoints
https://oracles-production.up.railway.app/mcpstreamable-httpWhat it can do
Tool inventory
Tools (7)
🟢list_feeds(category, compact)
List every change-intelligence feed: source slug, label, the question each answers, per-call prices, paid x402 endpoints, and free discovery URLs. There are ~120 feeds, so pass `category` to filter (e.g. 'security', 'regulatory', 'packages', 'premium', 'infrastructure', 'compliance') and/or `compact: true` to keep the payload small. Use the returned `source` slug with preview_feed.
Input Schema
{
"type": "object",
"properties": {
"category": {
"description": "Filter to one category (see the `categories` list in the response)",
"type": "string"
},
"compact": {
"description": "Return only source/label/question/price to keep the payload small",
"type": "boolean"
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"service": {
"type": "string"
},
"feedCount": {
"type": "number"
},
"totalFeeds": {
"type": "number"
},
"categories": {
"type": "array",
"items": {
"type": "string"
}
},
"feeds": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"premium": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"discovery": {
"type": "array",
"items": {
"type": "string"
}
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢preview_feed(source, since, scope, package, repo, ...)
Free preview (up to 5 recent changes) for any feed. Pass the feed's `source` slug (from list_feeds). Optionally: `since` (ISO-8601) to window; `scope` to filter to an entity-id prefix on feeds that support it (e.g. an HTS code); or `package`/`repo`/`ecosystem` on feeds that resolve arbitrary entities live (e.g. dependency feeds). The full feed, status, and LLM brief are paid via x402.
Input Schema
{
"type": "object",
"properties": {
"source": {
"type": "string",
"description": "Feed source slug, e.g. 'depwatch' or 'cve' (see list_feeds)"
},
"since": {
"description": "ISO-8601 instant; only changes detected after this",
"type": "string"
},
"scope": {
"description": "Entity-id prefix filter for feeds that declare a scope param",
"type": "string"
},
"package": {
"description": "Package name for dependency feeds (resolved live)",
"type": "string"
},
"repo": {
"description": "GitHub owner/repo for dependency feeds",
"type": "string"
},
"ecosystem": {
"description": "Registry hint, e.g. 'npm' or 'pypi'",
"type": "string"
}
},
"required": [
"source"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"source": {
"type": "string"
},
"question": {
"type": "string"
},
"tier": {
"type": "string"
},
"previewCount": {
"type": "number"
},
"changes": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"entity": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"error": {
"type": "string"
},
"hint": {
"type": "string"
},
"price": {
"type": "string"
},
"url": {
"type": "string"
},
"params": {
"type": "array",
"items": {
"type": "string"
}
},
"exampleRequest": {
"type": "string"
},
"freeTeaser": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"note": {
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢packagehealth_preview(package, ecosystem)
FREE preview of a dependency's health: current version, deprecation flag, OpenSSF Scorecard, SPDX license, and known-advisory count (via deps.dev). The full ship/avoid verdict — per-advisory CISA-KEV active-exploit cross-reference, license-fit judgement, and LLM recommendation — is the paid /v1/packagehealth/check.
Input Schema
{
"type": "object",
"properties": {
"package": {
"type": "string",
"description": "Package name, e.g. 'lodash' or 'django'"
},
"ecosystem": {
"description": "npm | pypi | go | maven | cargo | nuget (default npm)",
"type": "string"
}
},
"required": [
"package"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"package": {
"type": "string"
},
"ecosystem": {
"type": "string"
},
"version": {
"type": "string"
},
"deprecated": {
"type": "boolean"
},
"license": {
"type": "array",
"items": {}
},
"knownAdvisories": {
"type": "number"
},
"scorecard": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"stars": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
]
},
"tier": {
"type": "string"
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"error": {
"type": "string"
},
"hint": {
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢vendorrisk_preview(name)
FREE preview of counterparty risk: tracked OFAC designations + product recalls we monitor for the name. The authoritative sanctions/denied-party (CSL) + federal debarment (SAM) screening and the CLEAR→PROHIBITED risk verdict are the paid /v1/vendorrisk/check.
Input Schema
{
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Company or individual name to screen"
}
},
"required": [
"name"
],
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"name": {
"type": "string"
},
"tier": {
"type": "string"
},
"trackedFlagCount": {
"type": "number"
},
"trackedFlags": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"note": {
"type": "string"
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢depwatch_preview(package, repo, since)
Free preview of breaking changes / new releases for a software dependency. Pass an npm/PyPI `package` (resolved and fetched live if not already tracked) or a GitHub `repo` (owner/repo). Returns up to 5 recent changes plus the package's current version. Full history, significance filtering, and the LLM brief are paid via x402.
Input Schema
{
"type": "object",
"properties": {
"package": {
"description": "npm or PyPI package name, e.g. 'lodash' or 'react'",
"type": "string"
},
"repo": {
"description": "GitHub owner/repo, e.g. 'facebook/react'",
"type": "string"
},
"since": {
"description": "ISO-8601 instant; only changes detected after this",
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"source": {
"type": "string"
},
"question": {
"type": "string"
},
"tier": {
"type": "string"
},
"previewCount": {
"type": "number"
},
"changes": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"entity": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"error": {
"type": "string"
},
"hint": {
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢regwatch_preview(since)
Free preview of recent Federal Register regulatory actions in the tracked industry vertical. Returns up to 5 recent items. The full windowed feed and the LLM brief are paid via x402.
Input Schema
{
"type": "object",
"properties": {
"since": {
"description": "ISO-8601 instant; only changes detected after this",
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"source": {
"type": "string"
},
"question": {
"type": "string"
},
"tier": {
"type": "string"
},
"previewCount": {
"type": "number"
},
"changes": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"entity": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"error": {
"type": "string"
},
"hint": {
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}🟢tariffwatch_preview(hts, since)
Free preview of recent US import-tariff changes. Optionally scope to an HTS code prefix (e.g. '6109' or '8471.30'). Returns up to 5 recent changes plus current duty-rate state for a scoped code. Full feed and the LLM brief are paid via x402.
Input Schema
{
"type": "object",
"properties": {
"hts": {
"description": "HTS code prefix, e.g. '6109' or '8471.30'",
"type": "string"
},
"since": {
"description": "ISO-8601 instant; only changes detected after this",
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#"
}Output Schema
{
"type": "object",
"properties": {
"source": {
"type": "string"
},
"question": {
"type": "string"
},
"tier": {
"type": "string"
},
"previewCount": {
"type": "number"
},
"changes": {
"type": "array",
"items": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
}
},
"entity": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"upgrade": {
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {}
},
"error": {
"type": "string"
},
"hint": {
"type": "string"
}
},
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false
}Community
Evidence