{"id":"negation-scope","title":"Find negation cues and the words they cover; report whether given terms fall inside a negation scope","description":"Applies NegEx-style rules (the English termset of negspacy, MIT, derived from NegEx) to text: finds negation cues, pseudo-negations such as 'not only', and scope terminators such as 'but', and returns each cue's scope window with offsets in UTF-16, code points, UTF-8 bytes and graphemes. Given target terms, reports per occurrence whether it is negated, not negated by the rules, or unknown (near a pseudo-negation). Rule-based and English only: no parsing, double negation and sarcasm are not interpreted. Does not judge truth.","roi":"Stops 'no evidence of fraud' being read as 'fraud'. 50,000 characters per $0.005 call.","audience":"agent-infra","package":"context-evidence-kit","channels":["x402","mcp"],"endpoint":{"method":"POST","url":"https://agents.writerslogic.com/api/v1/negation-scope","path":"/api/v1/negation-scope","contentType":"application/json"},"price":{"amount":"0.005","currency":"USDC","network":"base","perCall":true,"failedCallsCharged":false},"inputSchema":{"type":"object","additionalProperties":false,"required":["text"],"properties":{"text":{"type":"string","maxLength":50000,"minLength":1,"description":"Text to analyze."},"targets":{"type":"array","items":{"type":"string","maxLength":100},"maxItems":50,"description":"Terms to classify (literal, case-insensitive, whole words)."},"window":{"type":"integer","minimum":1,"maximum":20,"description":"Words a cue covers (NegEx uses 5). Default 5."}}},"resultSchema":{"type":"object","properties":{"status":{"type":"string","enum":["pass","fail","unknown","unsupported"],"description":"pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass."},"cues":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"kind":{"type":"string","enum":["preceding","following","pseudo","termination"]},"text":{"type":"string"},"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"scope":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}}}},"maxItems":500},"targets":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"term":{"type":"string"},"verdict":{"type":"string","enum":["negated","not-negated","mixed","unknown","absent"]},"occurrences":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"verdict":{"type":"string","enum":["negated","not-negated","unknown"]},"cue":{"type":"string"}}},"maxItems":50}}},"maxItems":50},"witnesses":{"type":"array","items":{"type":"object","properties":{"ruleId":{"type":"string"},"detail":{"type":"string"},"path":{"type":"string","description":"JSON pointer or dotted path into the input."},"offset":{"type":"integer"},"index":{"type":"integer"},"expected":{"description":"What the rule required."},"actual":{"description":"What the input had."}}}},"versions":{"type":"object","description":"Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile)."},"limits":{"type":"array","items":{"type":"string"}},"deterministic":{"type":"boolean","description":"Always true: pure code, no model."}}},"outputSchema":{"type":"object","properties":{"data":{"type":"object","properties":{"status":{"type":"string","enum":["pass","fail","unknown","unsupported"],"description":"pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass."},"cues":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"kind":{"type":"string","enum":["preceding","following","pseudo","termination"]},"text":{"type":"string"},"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"scope":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}}}},"maxItems":500},"targets":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"term":{"type":"string"},"verdict":{"type":"string","enum":["negated","not-negated","mixed","unknown","absent"]},"occurrences":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"verdict":{"type":"string","enum":["negated","not-negated","unknown"]},"cue":{"type":"string"}}},"maxItems":50}}},"maxItems":50},"witnesses":{"type":"array","items":{"type":"object","properties":{"ruleId":{"type":"string"},"detail":{"type":"string"},"path":{"type":"string","description":"JSON pointer or dotted path into the input."},"offset":{"type":"integer"},"index":{"type":"integer"},"expected":{"description":"What the rule required."},"actual":{"description":"What the input had."}}}},"versions":{"type":"object","description":"Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile)."},"limits":{"type":"array","items":{"type":"string"}},"deterministic":{"type":"boolean","description":"Always true: pure code, no model."}}},"_provenance":{"type":"object","description":"C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance"}},"required":["data","_provenance"]},"example":{"text":"The scan shows no sign of fracture, but there is swelling.","targets":["fracture","swelling"]},"openapiOperation":{"operationId":"negation_scope","summary":"Find negation cues and the words they cover; report whether given terms fall inside a negation scope","description":"Applies NegEx-style rules (the English termset of negspacy, MIT, derived from NegEx) to text: finds negation cues, pseudo-negations such as 'not only', and scope terminators such as 'but', and returns each cue's scope window with offsets in UTF-16, code points, UTF-8 bytes and graphemes. Given target terms, reports per occurrence whether it is negated, not negated by the rules, or unknown (near a pseudo-negation). Rule-based and English only: no parsing, double negation and sarcasm are not interpreted. Does not judge truth.\n\nPrice: 0.005 USDC on Base (x402).","x-x402-price-usdc":"0.005","x-x402-amount":"5000","x-payment-info":{"protocols":["x402"],"price":{"mode":"fixed","currency":"USD","amount":"0.005"}},"x-audience":"agent-infra","x-sample-url":"https://agents.writerslogic.com/api/v1/samples/negation-scope","security":[{"x402":[]},{"apiKey":[]}],"requestBody":{"required":true,"content":{"application/json":{"schema":{"type":"object","additionalProperties":false,"required":["text"],"properties":{"text":{"type":"string","maxLength":50000,"minLength":1,"description":"Text to analyze."},"targets":{"type":"array","items":{"type":"string","maxLength":100},"maxItems":50,"description":"Terms to classify (literal, case-insensitive, whole words)."},"window":{"type":"integer","minimum":1,"maximum":20,"description":"Words a cue covers (NegEx uses 5). Default 5."}}},"example":{"text":"The scan shows no sign of fracture, but there is swelling.","targets":["fracture","swelling"]}}}},"responses":{"200":{"description":"Paid result with provenance","content":{"application/json":{"schema":{"type":"object","properties":{"data":{"type":"object","properties":{"status":{"type":"string","enum":["pass","fail","unknown","unsupported"],"description":"pass: every rule held. fail: a rule was violated (see witnesses). unknown: the input lacks the evidence to decide. unsupported: outside what this engine covers. Missing evidence is never a pass."},"cues":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"kind":{"type":"string","enum":["preceding","following","pseudo","termination"]},"text":{"type":"string"},"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"scope":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}}}},"maxItems":500},"targets":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"term":{"type":"string"},"verdict":{"type":"string","enum":["negated","not-negated","mixed","unknown","absent"]},"occurrences":{"type":"array","items":{"type":"object","additionalProperties":false,"properties":{"span":{"type":"object","description":"Half-open [start,end) range in four coordinate systems: UTF-16 code units, code points, UTF-8 bytes, extended grapheme clusters (Intl.Segmenter).","properties":{"utf16":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"codePoint":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"utf8":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"grapheme":{"type":"object","properties":{"start":{"type":"integer"},"end":{"type":"integer"}}},"graphemeAligned":{"type":"boolean"}}},"verdict":{"type":"string","enum":["negated","not-negated","unknown"]},"cue":{"type":"string"}}},"maxItems":50}}},"maxItems":50},"witnesses":{"type":"array","items":{"type":"object","properties":{"ruleId":{"type":"string"},"detail":{"type":"string"},"path":{"type":"string","description":"JSON pointer or dotted path into the input."},"offset":{"type":"integer"},"index":{"type":"integer"},"expected":{"description":"What the rule required."},"actual":{"description":"What the input had."}}}},"versions":{"type":"object","description":"Every semantic dependency of this answer (engine, tables and their as-of dates, tokenizer, calendar, rounding profile)."},"limits":{"type":"array","items":{"type":"string"}},"deterministic":{"type":"boolean","description":"Always true: pure code, no model."}}},"_provenance":{"type":"object","description":"C2PA-aligned manifest and W3C VC 2.0 (eddsa-jcs-2022) issued by the hub DID; verify at POST /api/v1/verify-provenance"}},"required":["data","_provenance"]}}}},"400":{"description":"Invalid request (no payment consumed)","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"},"code":{"type":"string"}}}}}},"401":{"description":"Invalid X-API-KEY","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"},"code":{"type":"string"}}}}}},"402":{"description":"Payment required or invalid","content":{"application/json":{"schema":{"type":"object","description":"x402 v2 PaymentRequired (also base64 in the PAYMENT-REQUIRED header)","properties":{"x402Version":{"type":"integer"},"error":{"type":"string"},"code":{"type":"string"},"resource":{"type":"object"},"accepts":{"type":"array","items":{"type":"object"}},"extensions":{"type":"object"}}}}}},"502":{"description":"Upstream failure; the payment is released or not settled","content":{"application/json":{"schema":{"type":"object","properties":{"error":{"type":"string"},"code":{"type":"string"}}}}}}}},"links":{"docs":"https://agents.writerslogic.com/docs/negation-scope/","docsJson":"https://agents.writerslogic.com/docs/negation-scope.json","sample":"https://agents.writerslogic.com/api/v1/samples/negation-scope","openapi":"https://agents.writerslogic.com/openapi.json","catalog":"https://agents.writerslogic.com/api/v1/catalog","verifyProvenance":"https://agents.writerslogic.com/api/v1/verify-provenance","index":"https://agents.writerslogic.com/docs/index.json"}}