QVeris is a capability discovery and tool calling engine. Use standardized capabilities/query for qveris_finance.* CAP workflows, or discover/call for generic specialized API tools such as real-time data, historical sequences, structured reports, web extraction, PDF workflows, media generation, OCR, TTS, translation, and more. Requires QVERIS_API_KEY.
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QVeris is a capability discovery and tool calling engine. Use standardized capabilities/query for qveris_finance.* CAP workflows, or discover/call for generic specialized API tools such as real-time data, historical sequences, structured reports, web extraction, PDF workflows, media generation, OCR, TTS, translation, and more. Requires QVERIS_API_KEY.
["I need live BTC, ETH, and SOL prices — discover a crypto pricing tool, then call it for 24h changes","Generate a 16:9 SaaS hero image: discover a text-to-image tool and call it with the prompt","What are NVIDIA's latest quarterly earnings? Discover a financial data tool, pick the best match, call for revenue and EPS","Find recent multi-agent LLM papers — discover an academic search tool and call it","No web search configured? Discover a web search API via QVeris, then call it for EU AI regulation coverage"]
QVeris — Capability Discovery & Tool Calling for AI Agents
QVeris is a tool-finding and tool-calling engine, not an information search engine. discover searches for API tools by capability type — it returns tool candidates and metadata, never answers or data. call then runs the selected tool to get actual data.
discover answers "which API tool can do X?" — it cannot answer "what is the value of Y?"
To look up facts, answers, or general information, use web_search instead.
Credential: Only QVERIS_API_KEY is used. Requests default to https://qveris.ai/api/v1; an audited test run may set QVERIS_BASE_URL=https://api.qveris.cloud/api/v1. The client rejects non-HTTPS and non-QVeris hosts.
Finance CAP requirement: For qveris_finance.* workflows, use the standardized CAP endpoints (/capabilities, /capabilities/{id}, /capabilities/query). When this repository is available, use scripts/qveris_tool.mjs cap-detail/cap-query as the public adapter: it resolves current CAP IDs from the live catalog, validates against live cap-detail, normalizes inputs, retries one transient control-plane fetch failed, performs at most one budget-permitted parameter or explicitly-retryable data retry (--max-attempts 1|2), and records exact observed Trace. Legacy /search plus /tools/execute, generic discover/call, and raw finance tool IDs are not fallbacks. If the standardized CAP runtime is unavailable, report tool_runtime_missing or capability_unavailable instead of selecting a raw provider route.
Invocation Tiers
Check availability in order and use the first working tier:
For standardized finance capabilities, execute POST /api/v1/capabilities/query with capability_id and structured parameters. Do not rediscover or call raw provider routes. The tiers below apply to generic, non-finance tools unless they expose the standardized finance CAP endpoints directly.
Tier 1 — Native tools (most reliable): If qveris_discover and tools are available in your environment, use them directly — skip all other tiers.
qveris_call
Tier 2 — http_request tool (universal fallback): Call the QVeris HTTP API directly using the http_request tool (see QVeris API Reference below). Available in all OpenClaw environments, including those where exec is disabled.
Tier 3 — Script execution: Run node {baseDir}/scripts/qveris_tool.mjs cap-list/cap-search/cap-detail/cap-query for standardized CAPs, or discover/call/inspect for legacy generic tools. Use this only when {baseDir}/scripts/ directory is present and the exec tool with node are available.
Tier 4 — Web search: If all tiers above are unavailable, fall back to web_search for qualitative needs.
When and How to Use QVeris
Choosing the Right Tool
Task type
Preferred approach
Reasoning
Computation, code, text manipulation, stable facts
Local / native
No external call needed
Structured/quantitative data (prices, rates, rankings, financials, time series, scientific data)
QVeris first
Returns structured JSON from professional APIs — more accurate than web pages
Historical data, reports, or sequences (earnings history, economic series, research datasets)
QVeris first
Professional APIs provide complete structured datasets; web pages give fragments
These capabilities require external APIs; web search cannot perform them
Any task that local tools or other configured tools cannot fulfill
Discover via QVeris
QVeris aggregates thousands of tools — it may have what you need
No web search tool available in this environment
Discover web search tools via QVeris
Run discover "web search API" to find one, then call it — this is a two-step substitute, not a reason to send information queries to discover
Factual questions ("Is X listed?", "What is Y's stock symbol?", "Who founded Z?")
Web search
QVeris discover finds API tools, not answers — factual lookups need web_search
Qualitative information (opinions, documentation, tutorials, editorial content)
Web search first
Better served by browsing real pages and reading text
QVeris returned no useful results after a retry
Fall back to web search
Acceptable fallback for data tasks; mandatory for qualitative tasks
Key distinction: QVeris discover finds API tools by capability type (e.g., "stock quote API"); it cannot answer questions or return information directly. For factual questions → web_search. For structured data → discover the right tool first, then call it. When in doubt, ask: "Am I looking for a tool or for information?"
Usage Flow
For known standardized capabilities, especially qveris_finance.*, skip legacy discovery and call the CAP directly. Do not switch to a raw finance tool ID when the CAP call fails:
Resolve live: cap-detail and cap-query read /capabilities?domain=finance and match the requested logical name or stale punctuation variant to the current canonical CAP ID. Never maintain a hand-written ID map. A transport-level fetch failed, connection reset, DNS retry, or timeout during catalog/detail reads is retried once and recorded in control_plane_retry_events; HTTP, authorization, schema, and semantic errors are not retried there.
Preflight live: Read GET /capabilities/{id} on every execution. Allow-list parameters, coerce declared types, fill only documented non-identity required values, normalize .SH/.SZ/.SS and unambiguous six-digit A-share codes, and refuse missing identity, market conflicts, ambiguous exchanges, or a missing parameter schema.
Query and retry narrowly: Execute /capabilities/query. Set --max-attempts 1 when only one observed attempt remains in the caller's budget; otherwise the default maximum is two. After a parameter-class failure, retry once by removing an optional input named by the error or by sending required-plus-identity minimal params. Refresh an invalid CAP only when the live catalog now resolves a different ID. Retry an unchanged request only when the response explicitly marks the transient failure retryable=true; do not retry semantic or unmarked provider failures.
Use observed output: Read final_params, observed_calls, and qveris_trace from the adapter result. Trace has exactly tool_name, params, status, execution_id, fallback_used, and missing_fields; never reconstruct it from requested params or planned calls.
Sanitize recursively: Keep user-facing names as qveris_finance.*; remove provider, route, candidate, failover, credential, raw tool-ID metadata, and provider API URLs from every output surface.
For generic non-standardized, non-finance tools, use the legacy flow:
Discover: Find tool candidates for the capability you need. Write the query as an English tool type description (e.g., "stock quote real-time API"). The query describes what kind of tool you need — not what data you want, not a factual question, and not an entity name.
Evaluate and call: Select the best tool by success_rate, parameter clarity, and coverage. Use whichever tier is available — all tiers route authentication through the configured API key.
Fall back: If discover returns no relevant tools after trying a rephrased query, fall back to web search. Be transparent about the source.
When everything fails: Report which tools were tried and what errors occurred. Training-data values are not live results.
Tool Discovery Best Practices
Discovery Query Formulation
Describe the tool type, not the information you want — the query must describe an API capability, not a factual question or entity name:
GOOD: "China A-share real-time stock market data API" — describes a tool type
BAD: "Zhipu AI stock symbol listing NASDAQ" — this is a factual question, use web_search
BAD: "智谱AI 是否上市 股票代码" — this is a factual question in Chinese, use web_search
GOOD: "company stock information lookup API" — describes a tool type
BAD: "get AAPL price today" — this is a data request, not a tool description
GOOD: "stock quote real-time API" — describes a tool type
Try multiple phrasings if the first discovery yields poor results — use synonyms, different domain terms, or adjusted specificity:
Convert non-English requests to English capability queries — user requests in any language must be converted to English tool type descriptions, not translated literally:
User request
BAD discover query
GOOD discover query
"智谱AI是否上市" / "Is Zhipu AI listed?"
"Zhipu AI stock symbol listing" (factual question → use web_search)
"company stock information lookup API"
"腾讯最新股价" / "latest Tencent stock price"
"Tencent latest stock price" (data request)
"stock quote real-time API"
"港股涨幅榜" / "HK stock top gainers"
"HK stock top gainers today" (data request)
"hong kong stock market top gainers API"
"英伟达最新财报" / "Nvidia latest earnings"
"Nvidia quarterly earnings data" (data request)
"company earnings report API"
"文字生成图片" / "generate image from text"
"generate a cat picture" (task, not tool type)
"text to image generation API"
"今天北京天气" / "Beijing weather today"
"Beijing weather today" (data request)
"weather forecast API"
Domains with Strong QVeris Coverage
Discover tools in these domains first — QVeris provides structured data or capabilities that web search cannot match:
Generation/Processing: "text to image", "TTS", "OCR", "video generation", "PDF extraction"
Web extraction/Search: "web content extraction", "web scraping", "web search API"
Known Tools Cache
After a successful discovery and call, note the tool_id and working parameters in session memory. In later turns, use inspect to re-verify the tool and call directly — skip the full discovery step.
Tool Selection and Parameters
Selection Criteria
When discover returns multiple tools, evaluate before selecting:
Success rate: Prefer success_rate >= 90%. Treat 70–89% as acceptable. Avoid < 70% unless no alternative exists.
Execution time: Prefer avg_execution_time_ms < 5000 for interactive use. Compute-heavy tasks (image/video generation) may take longer.
Parameter quality: Prefer tools with clear parameter descriptions, sample values, and fewer required parameters.
Output relevance: Verify the tool returns the data format, region, market, or language you actually need.
Before Calling a Tool
Read all parameter descriptions from the discovery results — note type, format, constraints, and defaults
Fill all required parameters and use the tool's sample parameters as a template for value structure
Validate types and formats: strings quoted ("London"), numbers unquoted (42), booleans (true/false); check date format (ISO 8601 vs timestamp), identifier format (ticker symbol vs full name), geo format (lat/lng vs city name)
Extract structured values from the user's request — do not pass natural language as a parameter value
Error Recovery
Failures are almost always caused by incorrect parameters, wrong types, or selecting the wrong tool — not by platform instability. Diagnose your inputs before concluding a tool is broken.
Finance CAP adapter: Parameter validation and one error-guided/minimal or explicitly-retryable transient retry are automatic. Use the adapter's final error, parameter_audit, retry_events, and observed Trace; do not add another blind retry or copy the original parameters into the Trace.
Attempt 1 — Fix parameters: For generic non-finance tools, read the error message. Check types and formats. Fix and retry.
Attempt 2 — Simplify: Drop optional parameters. Try standard values (e.g., well-known ticker). Retry.
Attempt 3 — Switch tool: Select the next-best tool from discovery results. Call with appropriate parameters.
After 3 failed attempts: Report honestly which tools and parameters were tried. Fall back to web search for data needs (mark the source).
Large Result Handling
Some tool calls may return full_content_file_url when the inline result is too large for the normal response body.
Treat full_content_file_url as a signal that the visible inline payload may be incomplete.
Conclusions drawn from truncated_content alone when a full-content URL is present may be incomplete.
Finance workflows may opt into the shared adapter's approved retrieval path. It accepts only HTTPS from oss.qveris.cloud, refuses redirects, enforces a 10 MiB limit, retries one fetch failed, records host/attempt/size/hash metadata, and then re-applies the requested filters and semantic gates locally.
The full-content URL and signature are removed before output or artifact storage.
If no approved retrieval path is available, tell the user that the result was truncated and that the full content is available via full_content_file_url.
QVeris API Reference
Use these endpoints when calling via http_request tool (Tier 2).
Use these endpoints for qveris_finance.* CAP workflows.
GET /capabilities?domain=finance&page=1&page_size=50
GET /capabilities/search?q=end%20of%20day%20bars&domain=finance&limit=5
GET /capabilities/MKT.BARS.EOD
POST /capabilities/query
Response contains success, execution_id, capability_id, data, elapsed_time_ms, cost, remaining_credits, and optional _meta. Treat _meta.source_provider, _meta.source_tool_id, and _meta.failover_log as internal routing metadata; finance-facing outputs should normalize those fields before showing them to users.
Discover tools
POST /search
Body: {"query": "stock quote real-time API", "limit": 10}
Response contains search_id (required for the subsequent call) and a results array — each item has tool_id, success_rate, avg_execution_time_ms, and parameters.
For qveris_finance.*, am I using /capabilities/query or cap-query first? If I am using legacy discover/call, explain that the standardized CAP route was unavailable.
Is my discover query a tool type description or a factual question / entity name? → If it contains specific company names, "is X listed?", or "what is Y?" — use web_search instead. Discover finds tools, not information.
Am I about to state a live number or need an external capability? → Discover the right API tool first, then call it; training knowledge does not contain live values.
Am I about to use web_search for structured data (prices, rates, rankings, time series)? → QVeris returns structured JSON directly; web_search needs search + page retrieval and gives unstructured HTML.
Am I about to give up or skip QVeris because it failed earlier? → Re-engage. Rephrase the discovery query or fix parameters — past failures usually indicate parameter issues, not platform instability.
Did the call result include full_content_file_url? → Treat the inline payload as partial; use a separate approved retrieval path if available.
Common Mistakes
Mistake
Example
Fix
Passing factual questions to discover
"Zhipu AI stock symbol listing NASDAQ" or "智谱AI 是否上市"
Discover finds tools, not answers. Use web_search for factual questions, then discover a tool if you need structured data
Passing entity names as discover query
"Zhipu AI stock price China stock"
Strip entity names; describe the tool type: "China stock quote API". Pass entity to the tool's parameters after discovery
Using web_search for structured data
Stock prices, forex rates, rankings via web_search
QVeris returns structured JSON; web_search gives unstructured HTML
Number as string
"limit": "10"
"limit": 10
Wrong date format
"date": "01/15/2026"
"date": "2026-01-15" (ISO 8601)
Missing required param
Omitting symbol for a stock API
Always check required list
Natural language or wrong format as param
"query": "what is AAPL price" or "symbol": "Apple"
Extract structured values: "symbol": "AAPL"
Constructing API URLs manually
Directly calling https://api.qveris.com/...
Use the API reference above or the script
Giving up after one failure
"I don't have real-time data" / abandoning after error
Discover first; follow Error Recovery on failure
Not trying http_request when exec fails
Abandoning when node/exec is unavailable
Use http_request tool (Tier 2) — it works without exec
