Decixa

Find the right API for your AI agent. 30,000+ listings tracked. 5,500+ verified live as of April 2026.

MCP Server for Decixa — The decision layer for AI Agents.

v0.1.7: intent-driven update. New resolve / discover tools replace search_apis / browse_apis (kept as deprecated aliases). See CHANGELOG.md for migration guide.

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Quickstart

# Claude Code
npx decixa-mcp

// Claude Desktop — claude_desktop_config.json
{
  "mcpServers": {
    "decixa": {
      "command": "npx",
      "args": ["-y", "decixa-mcp"]
    }
  }
}

// Cursor / Windsurf — .cursor/mcp.json or .windsurf/mcp.json
{
  "mcpServers": {
    "decixa": {
      "command": "npx",
      "args": ["-y", "decixa-mcp"]
    }
  }
}

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What you can do

resolve({ intent: "get real-time BTC price" })
→ Returns top recommendation + up to 2 alternatives, ranked by Phase 3 vector + scoring

resolve({ intent: "summarize Reddit posts", budget: 0.005 })
→ Filters by cost, returns trust_evidence and latency tier

discover({ intent: "transcribe audio", budget: 0.01, sort: "price_asc" })
→ Returns multiple x402-verified candidates so the agent can choose

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Why Decixa

Unlike x402.direct, Decixa verifies x402 compliance by actually probing each endpoint — not just metadata analysis.

	Decixa	x402.direct
Listings tracked	30,000+	~4,000
x402 verification	HTTP 402 probe (real)	Metadata scoring
Capability classification	9 verb-based axes	—
Intent → API resolution	/api/agent/resolve	—
MCP server	npx decixa-mcp	—

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Tools

resolve (recommended, replaces search_apis)

Find the best API for a task using natural language. Returns top recommendation + up to 2 alternatives. Decixa uses Phase 3 vector + scoring (vector 0.70 + latency 0.05 + price 0.05 + tiebreak 0.20). When no candidate clears the similarity threshold, returns recommendation_status='no_match' with up to 2 suggestions.

Parameter	Type	Description
intent (required)	string	What you want to do (e.g. "summarize news articles")
budget	number	Max USDC per call (e.g. 0.01)
latency	string	low / medium / high
min_similarity	number	Similarity threshold (0.2–0.9, default 0.5). Out-of-range → 400

Response includes recommendation_status ("resolved" or "no_match").

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discover (recommended, replaces browse_apis)

List APIs ranked by intent. Returns multiple candidates so the agent can choose. Verified-x402 only.

Parameter	Type	Description
intent (required)	string	Natural-language intent (mapped to server's task query param)
tag	string	Filter by capability tag (e.g. "Market Data", "Risk Score")
budget	number	Max USDC per call
latency_tier	string	low / medium / high
execution_mode	string	sync / async
pricing_model	string	per_call / subscription / hybrid
min_similarity	number	Similarity threshold (0.2–0.9, default 0.3). Out-of-range → 400
sort	string	relevance (default) / price_asc / price_desc / latency_asc / trust / calls (deprecated)
limit	integer	Results per page (1–50, default 20)
offset	integer	Pagination offset

Response includes search_mode, min_similarity_applied, no_match_reason, top_candidates_below_threshold.

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search_apis (deprecated alias for resolve)

DEPRECATED in v0.1.7. Will be removed in v1.0.0. Use resolve instead. Shares schema and handler with resolve.

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browse_apis (deprecated alias for discover)

DEPRECATED in v0.1.7. Will be removed in v1.0.0. Use discover instead. Shares schema and handler with discover.

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get_api_detail

Get full details for a specific API by ID.

Parameter	Type	Description
api_id	string	API ID from resolve or discover

Returns: endpoint URL, pricing, capability, tags, agent_compatibility, schema info, use_cases, trust_evidence (score / uptime_7d / p95_latency_ms / payment_req_parsed / last_checked / last_probed_at), provider, and verified_live flag. Prefer trust_evidence.score over legacy trust_score for new clients.

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get_index

Entry point for agents new to Decixa. Returns platform overview, endpoints, and usage guidance.

No parameters required.

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Migration from v0.1.6

Old	New	Notes
search_apis({intent, capability, agent_ready})	resolve({intent, min_similarity?})	Drop capability / agent_ready. They are silently ignored server-side (D-059).
browse_apis({task, capability, agent_ready, sort})	discover({intent, sort})	task → intent, drop capability / agent_ready. Default sort changed trust → relevance.
list_capabilities({})	(removed)	Capability filtering is no longer needed. Pass intent text + optional tag filter.

Strict MCP clients note: if your MCP client validates additionalProperties: false, it will reject capability / agent_ready arguments at the client side. Tolerant clients let them through, but Decixa silently ignores them server-side. Either way, remove them.

See CHANGELOG.md for full details.

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Claude Code setup

See docs/claude-code.md for step-by-step Claude Code integration.

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Environment Variables

Variable	Default	Description
DECIXA_API_URL	https://api.decixa.ai	Decixa API base URL
DECIXA_API_KEY	(empty)	API key — reserved for future use

License

MIT