{"id":"befdceab-09ff-4abd-9b58-e7d16da1a3e6","entityType":"agent","slug":"clawhub-nutstrut-settlement-witness","name":"SettlementWitness","canonicalUrl":"https://www.xpersona.co/agent/clawhub-nutstrut-settlement-witness","canonicalPath":"/agent/clawhub-nutstrut-settlement-witness","generatedAt":"2026-10-10T08:05:13.158Z","source":"CLAWHUB","claimStatus":"UNCLAIMED","verificationTier":"NONE","summary":{"evidence":{"source":"editorial-content","verified":true,"confidence":"high","updatedAt":"2026-04-15T00:45:39.800Z","emptyReason":null},"description":"Generate a signed delivery receipt in under 30 seconds. Skill: SettlementWitness Owner: nutstrut Summary: Generate a signed delivery receipt in under 30 seconds. Tags: latest:0.0.6 Version history: v0.0.6 | 2026-02-21T00:44:16.707Z | user v0.0.6 Improved first-run onboarding experience. Added immediate “Run This Now” execution block Added concrete success indicators (PASS / receipt_id / sig) Simplified description to focus on outcome Reduced friction for first execution C","descriptionLabel":"Technical summary","evidenceSummary":"Capability contract not published. No trust telemetry is available yet. 1.3K downloads reported by the source. Last updated 4/15/2026.","installCommand":"clawhub skill install kn71nqqcxyxyst7f2s3f2nzz0h80jf78:settlement-witness","sourceUrl":"https://clawhub.ai/nutstrut/settlement-witness","homepage":"https://clawhub.ai/nutstrut/settlement-witness","primaryLinks":[{"label":"View on ClawHub","url":"https://clawhub.ai/nutstrut/settlement-witness","kind":"source"}],"safetyScore":84,"overallRank":62,"popularityScore":62,"trustScore":null,"claimedByName":null,"isOwner":false,"seoDescription":"Generate a signed delivery receipt in under 30 seconds. Skill: SettlementWitness Owner: nutstrut Summary: Generate a signed delivery receipt in under 30 seconds"},"coverage":{"evidence":{"source":"public-profile","verified":false,"confidence":"medium","updatedAt":"2026-04-15T00:45:39.800Z","emptyReason":null},"protocols":[{"protocol":"OPENCLEW","label":"OpenClaw","status":"self-declared","notes":"Declared in the public agent profile."}],"capabilities":[],"verifiedCount":0,"selfDeclaredCount":1,"capabilityMatrix":{"rows":[{"key":"OPENCLEW","type":"protocol","support":"unknown","confidenceSource":"profile","notes":"Listed on profile"}],"flattenedTokens":"protocol:OPENCLEW|unknown|profile"}},"adoption":{"evidence":{"source":"CLAWHUB","verified":false,"confidence":"medium","updatedAt":"2026-04-15T00:45:39.800Z","emptyReason":null},"stars":null,"forks":null,"downloads":1278,"packageName":null,"latestVersion":"0.0.6","tractionLabel":"1.3K downloads"},"release":{"evidence":{"source":"CLAWHUB","verified":false,"confidence":"medium","updatedAt":"2026-02-28T23:17:01.314Z","emptyReason":null},"lastUpdatedAt":"2026-04-15T00:45:39.800Z","lastCrawledAt":"2026-02-28T23:17:01.314Z","lastIndexedAt":null,"nextCrawlAt":"2026-03-01T23:17:01.314Z","lastVerifiedAt":null,"highlights":[{"version":"0.0.6","createdAt":"2026-02-21T00:44:16.707Z","changelog":"v0.0.6 Improved first-run onboarding experience. Added immediate “Run This Now” execution block Added concrete success indicators (PASS / receipt_id / sig) Simplified description to focus on outcome Reduced friction for first execution Clarified common failure modes No protocol or receipt format changes.","fileCount":3,"zipByteSize":2209},{"version":"0.0.5","createdAt":"2026-02-18T01:42:34.570Z","changelog":"0.0.5 – Usability update Added Windows PowerShell-safe example (prevents 422 errors). Added copy/paste REST examples. Clarified that install ≠ execution (must trigger tools/call or POST). No API changes.","fileCount":3,"zipByteSize":2481},{"version":"0.0.4","createdAt":"2026-02-15T00:19:41.951Z","changelog":"0.0.4 - Clarified MCP as preferred integration path - Added explicit tool name (settlement_witness via tools/call) - Added spec and SAR public key discovery links - Documented trailing-slash redirect behavior - Normalized reason_code example to SPEC_MISMATCH - Improved determinism wording","fileCount":null,"zipByteSize":null},{"version":"0.0.3","createdAt":"2026-02-05T06:19:44.663Z","changelog":"Initial publish: stateless HTTPS witness receipts for Default Settlement Verifier.","fileCount":null,"zipByteSize":null},{"version":"0.0.2","createdAt":"2026-02-05T06:04:42.121Z","changelog":"Initial publish: stateless HTTPS witness receipts for Default Settlement Verifier.","fileCount":null,"zipByteSize":null},{"version":"0.0.1","createdAt":"2026-02-05T05:49:06.077Z","changelog":"Initial publish: stateless HTTPS witness receipts for Default Settlement Verifier.","fileCount":null,"zipByteSize":null}]},"execution":{"evidence":{"source":"CLAWHUB","verified":false,"confidence":"low","updatedAt":null,"emptyReason":"No published capability contract is available yet."},"installCommand":"clawhub skill install kn71nqqcxyxyst7f2s3f2nzz0h80jf78:settlement-witness","setupComplexity":"low","setupSteps":["Setup complexity is classified as HIGH. You must provision dedicated cloud infrastructure or an isolated VM. Do not run this directly on your local workstation.","Final validation: Expose the agent to a mock request payload inside a sandbox and trace the network egress before allowing access to real customer data."],"contract":{"contractStatus":"missing","authModes":[],"requires":[],"forbidden":[],"supportsMcp":false,"supportsA2a":false,"supportsStreaming":false,"inputSchemaRef":null,"outputSchemaRef":null,"dataRegion":null,"contractUpdatedAt":null,"sourceUpdatedAt":null,"freshnessSeconds":null},"invocationGuide":{"preferredApi":{"snapshotUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/snapshot","contractUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/contract","trustUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/trust"},"curlExamples":["curl -s \"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/snapshot\"","curl -s \"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/contract\"","curl -s \"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/trust\""],"jsonRequestTemplate":{"query":"summarize this repo","constraints":{"maxLatencyMs":2000,"protocolPreference":["OPENCLEW"]}},"jsonResponseTemplate":{"ok":true,"result":{"summary":"...","confidence":0.9},"meta":{"source":"CLAWHUB","generatedAt":"2026-10-10T08:05:13.158Z"}},"retryPolicy":{"maxAttempts":3,"backoffMs":[500,1500,3500],"retryableConditions":["HTTP_429","HTTP_503","NETWORK_TIMEOUT"]}},"endpoints":{"dossierUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/dossier","snapshotUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/snapshot","contractUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/contract","trustUrl":"https://www.xpersona.co/api/v1/agents/clawhub-nutstrut-settlement-witness/trust"}},"reliability":{"evidence":{"source":"runtime-metrics","verified":false,"confidence":"low","updatedAt":null,"emptyReason":"No trust, reliability, or runtime telemetry is available."},"trust":{"status":"unavailable","handshakeStatus":"UNKNOWN","verificationFreshnessHours":null,"reputationScore":null,"p95LatencyMs":null,"successRate30d":null,"fallbackRate":null,"attempts30d":null,"trustUpdatedAt":null,"trustConfidence":"unknown","sourceUpdatedAt":null,"freshnessSeconds":null},"decisionGuardrails":{"doNotUseIf":["Contract metadata is missing or unavailable for deterministic execution."],"safeUseWhen":[],"riskFlags":["missing_or_unavailable_contract","trust_data_unavailable","schema_references_missing"],"operationalConfidence":"low"},"executionMetrics":{"observedLatencyMsP50":null,"observedLatencyMsP95":null,"estimatedCostUsd":null,"uptime30d":null,"rateLimitRpm":null,"rateLimitBurst":null,"lastVerifiedAt":null,"verificationSource":null},"runtimeMetrics":{"successRate":null,"avgLatencyMs":null,"avgCostUsd":null,"hallucinationRate":null,"retryRate":null,"disputeRate":null,"p50Latency":null,"p95Latency":null,"lastUpdated":null}},"benchmarks":{"evidence":{"source":"no-benchmark-data","verified":false,"confidence":"low","updatedAt":null,"emptyReason":"No benchmark suites or observed failure patterns are available."},"suites":[],"failurePatterns":[]},"artifacts":{"evidence":{"source":"CLAWHUB","verified":false,"confidence":"high","updatedAt":"2026-04-15T00:45:39.800Z","emptyReason":null},"readme":"Skill: SettlementWitness\n\nOwner: nutstrut\n\nSummary: Generate a signed delivery receipt in under 30 seconds.\n\nTags: latest:0.0.6\n\nVersion history:\n\nv0.0.6 | 2026-02-21T00:44:16.707Z | user\n\nv0.0.6\n\nImproved first-run onboarding experience.\n\nAdded immediate “Run This Now” execution block\n\nAdded concrete success indicators (PASS / receipt_id / sig)\n\nSimplified description to focus on outcome\n\nReduced friction for first execution\n\nClarified common failure modes\n\nNo protocol or receipt format changes.\n\nv0.0.5 | 2026-02-18T01:42:34.570Z | user\n\n0.0.5 – Usability update\n\nAdded Windows PowerShell-safe example (prevents 422 errors).\n\nAdded copy/paste REST examples.\n\nClarified that install ≠ execution (must trigger tools/call or POST).\n\nNo API changes.\n\nv0.0.4 | 2026-02-15T00:19:41.951Z | user\n\n0.0.4\n- Clarified MCP as preferred integration path\n- Added explicit tool name (settlement_witness via tools/call)\n- Added spec and SAR public key discovery links\n- Documented trailing-slash redirect behavior\n- Normalized reason_code example to SPEC_MISMATCH\n- Improved determinism wording\n\nv0.0.3 | 2026-02-05T06:19:44.663Z | user\n\nInitial publish: stateless HTTPS witness receipts for Default Settlement Verifier.\n\nv0.0.2 | 2026-02-05T06:04:42.121Z | user\n\nInitial publish: stateless HTTPS witness receipts for Default Settlement Verifier.\n\nv0.0.1 | 2026-02-05T05:49:06.077Z | user\n\nInitial publish: stateless HTTPS witness receipts for Default Settlement Verifier.\n\nArchive index:\n\nArchive v0.0.6: 3 files, 2209 bytes\n\nFiles: _meta.json (137b), settlement-witness/SKILL.md (2072b), SKILL.md (1358b)\n\nFile v0.0.6:settlement-witness/SKILL.md\n\n---\nname: settlement-witness\ndescription: \"OpenClaw skill: fetch replay-stable receipts (signed SAR v0.1) from SettlementWitness. Stateless. Deterministic.\"\n---\n\n# SettlementWitness (OpenClaw Skill)\n\nUse SettlementWitness to produce a replay-stable receipt (SAR v0.1) for task settlement.\n\n## Recommended usage (MCP)\nPOST https://defaultverifier.com/mcp\n\nHealth check:\nGET https://defaultverifier.com/mcp-healthz\n\nThe MCP endpoint returns the exact SettlementWitness receipt JSON.\n\n## Direct REST alternative\nPOST https://defaultverifier.com/settlement-witness\nGET  https://defaultverifier.com/settlement-witness  (returns JSON help payload)\n\n## Run this now (copy/paste)\n\n### Linux/macOS\n```bash\ncurl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'\n```\n\n### Windows PowerShell (IMPORTANT)\nPowerShell aliases `curl` to `Invoke-WebRequest`, which often causes **422 Invalid JSON**.\nUse `curl.exe` and a file payload:\n\n```powershell\n@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\"\n```\n\n## Important: install/download does NOT execute\nMany clients will only do discovery (e.g. `tools/list`).\nTo generate a receipt you must trigger a real tool run (MCP `tools/call` for `settlement_witness`) or send the REST POST above.\n\n\n## Required input\n- task_id (string)\n- spec (object)\n- output (object)\n\n## Example REST request\n{\n  \"task_id\": \"example-002\",\n  \"spec\": { \"expected\": \"foo\" },\n  \"output\": { \"expected\": \"foo\" }\n}\n\n## Interpretation\n- PASS → verified completion\n- FAIL → do not auto-settle\n- INDETERMINATE → retry or escalate\n- receipt_id → stable identifier\n- reason_code → canonical failure reason (ex: SPEC_MISMATCH)\n\n## Safety notes\n- Never send secrets in spec/output.\n- Keep spec/output deterministic.\n\nFile v0.0.6:SKILL.md\n\n---\nname: settlement-witness\ndescription: \"Generate a signed delivery receipt in under 30 seconds.\"\n---\n\n# SettlementWitness\n\nGenerate a signed delivery receipt in under 30 seconds.\n\n## Run This Now\n\nsettlement_witness({\n  task_id: \"quickstart-001\",\n  spec: { value: 1 },\n  output: { value: 1 }\n})\n\nYou should receive:\n\nPASS  \nSPEC_MATCH  \nreceipt_id starting with sha256:  \nsig starting with base64url:  \n\nExample (truncated):\n\n{\n  \"receipt_v0_1\": {\n    \"verdict\": \"PASS\",\n    \"reason_code\": \"SPEC_MATCH\",\n    \"receipt_id\": \"sha256:3adb22d0...\",\n    \"sig\": \"base64url:AbC...\"\n  }\n}\n\nSettlementWitness produces cryptographically signed delivery receipts that third-party systems can verify offline.\n\n## Common Failure Modes\n\n**If you see 422**  \nMissing required field. Ensure `task_id`, `spec`, and `output` are present.\n\n**If you see INDETERMINATE / EVALUATOR_TIMEOUT**  \nUpstream evaluator unreachable. This is still a valid signed receipt.\n\n**If you see FAIL / SPEC_MISMATCH**  \nYour output does not match your spec. Compare structures.\n\n## Live Examples / Fixtures\n\nSee working PASS, FAIL, and INDETERMINATE examples here:  \nfixtures/\n\n## Endpoints\n\nMCP:  \nPOST https://defaultverifier.com/mcp\n\nDirect REST:  \nPOST https://defaultverifier.com/settlement-witness\n\n## Safety Notes\n\nNever send secrets in `spec` or `output`. Keep inputs deterministic.\n\nFile v0.0.6:_meta.json\n\n{\n  \"ownerId\": \"kn71nqqcxyxyst7f2s3f2nzz0h80jf78\",\n  \"slug\": \"settlement-witness\",\n  \"version\": \"0.0.6\",\n  \"publishedAt\": 1771634656707\n}\n\nArchive v0.0.5: 3 files, 2481 bytes\n\nFiles: _meta.json (137b), settlement-witness/SKILL.md (2072b), SKILL.md (2072b)\n\nFile v0.0.5:settlement-witness/SKILL.md\n\n---\nname: settlement-witness\ndescription: \"OpenClaw skill: fetch replay-stable receipts (signed SAR v0.1) from SettlementWitness. Stateless. Deterministic.\"\n---\n\n# SettlementWitness (OpenClaw Skill)\n\nUse SettlementWitness to produce a replay-stable receipt (SAR v0.1) for task settlement.\n\n## Recommended usage (MCP)\nPOST https://defaultverifier.com/mcp\n\nHealth check:\nGET https://defaultverifier.com/mcp-healthz\n\nThe MCP endpoint returns the exact SettlementWitness receipt JSON.\n\n## Direct REST alternative\nPOST https://defaultverifier.com/settlement-witness\nGET  https://defaultverifier.com/settlement-witness  (returns JSON help payload)\n\n## Run this now (copy/paste)\n\n### Linux/macOS\n```bash\ncurl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'\n```\n\n### Windows PowerShell (IMPORTANT)\nPowerShell aliases `curl` to `Invoke-WebRequest`, which often causes **422 Invalid JSON**.\nUse `curl.exe` and a file payload:\n\n```powershell\n@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\"\n```\n\n## Important: install/download does NOT execute\nMany clients will only do discovery (e.g. `tools/list`).\nTo generate a receipt you must trigger a real tool run (MCP `tools/call` for `settlement_witness`) or send the REST POST above.\n\n\n## Required input\n- task_id (string)\n- spec (object)\n- output (object)\n\n## Example REST request\n{\n  \"task_id\": \"example-002\",\n  \"spec\": { \"expected\": \"foo\" },\n  \"output\": { \"expected\": \"foo\" }\n}\n\n## Interpretation\n- PASS → verified completion\n- FAIL → do not auto-settle\n- INDETERMINATE → retry or escalate\n- receipt_id → stable identifier\n- reason_code → canonical failure reason (ex: SPEC_MISMATCH)\n\n## Safety notes\n- Never send secrets in spec/output.\n- Keep spec/output deterministic.\n\nFile v0.0.5:SKILL.md\n\n---\nname: settlement-witness\ndescription: \"OpenClaw skill: fetch replay-stable receipts (signed SAR v0.1) from SettlementWitness. Stateless. Deterministic.\"\n---\n\n# SettlementWitness (OpenClaw Skill)\n\nUse SettlementWitness to produce a replay-stable receipt (SAR v0.1) for task settlement.\n\n## Recommended usage (MCP)\nPOST https://defaultverifier.com/mcp\n\nHealth check:\nGET https://defaultverifier.com/mcp-healthz\n\nThe MCP endpoint returns the exact SettlementWitness receipt JSON.\n\n## Direct REST alternative\nPOST https://defaultverifier.com/settlement-witness\nGET  https://defaultverifier.com/settlement-witness  (returns JSON help payload)\n\n## Run this now (copy/paste)\n\n### Linux/macOS\n```bash\ncurl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'\n```\n\n### Windows PowerShell (IMPORTANT)\nPowerShell aliases `curl` to `Invoke-WebRequest`, which often causes **422 Invalid JSON**.\nUse `curl.exe` and a file payload:\n\n```powershell\n@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\"\n```\n\n## Important: install/download does NOT execute\nMany clients will only do discovery (e.g. `tools/list`).\nTo generate a receipt you must trigger a real tool run (MCP `tools/call` for `settlement_witness`) or send the REST POST above.\n\n\n## Required input\n- task_id (string)\n- spec (object)\n- output (object)\n\n## Example REST request\n{\n  \"task_id\": \"example-002\",\n  \"spec\": { \"expected\": \"foo\" },\n  \"output\": { \"expected\": \"foo\" }\n}\n\n## Interpretation\n- PASS → verified completion\n- FAIL → do not auto-settle\n- INDETERMINATE → retry or escalate\n- receipt_id → stable identifier\n- reason_code → canonical failure reason (ex: SPEC_MISMATCH)\n\n## Safety notes\n- Never send secrets in spec/output.\n- Keep spec/output deterministic.\n\nFile v0.0.5:_meta.json\n\n{\n  \"ownerId\": \"kn71nqqcxyxyst7f2s3f2nzz0h80jf78\",\n  \"slug\": \"settlement-witness\",\n  \"version\": \"0.0.5\",\n  \"publishedAt\": 1771378954570\n}","readmeExcerpt":"Skill: SettlementWitness Owner: nutstrut Summary: Generate a signed delivery receipt in under 30 seconds. Tags: latest:0.0.6 Version history: v0.0.6 | 2026-02-21T00:44:16.707Z | user v0.0.6 Improved first-run onboarding experience. Added immediate “Run This Now” execution block Added concrete success indicators (PASS / receipt_id / sig) Simplified description to focus on outcome Reduced friction for first execution C","codeSnippets":[],"executableExamples":[{"language":"bash","snippet":"curl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'"},{"language":"bash","snippet":"curl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'"},{"language":"powershell","snippet":"@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\""},{"language":"bash","snippet":"curl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'"},{"language":"bash","snippet":"curl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'"},{"language":"powershell","snippet":"@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\""}],"parameters":null,"dependencies":[],"permissions":[],"extractedFiles":[{"path":"settlement-witness/SKILL.md","content":"---\nname: settlement-witness\ndescription: \"OpenClaw skill: fetch replay-stable receipts (signed SAR v0.1) from SettlementWitness. Stateless. Deterministic.\"\n---\n\n# SettlementWitness (OpenClaw Skill)\n\nUse SettlementWitness to produce a replay-stable receipt (SAR v0.1) for task settlement.\n\n## Recommended usage (MCP)\nPOST https://defaultverifier.com/mcp\n\nHealth check:\nGET https://defaultverifier.com/mcp-healthz\n\nThe MCP endpoint returns the exact SettlementWitness receipt JSON.\n\n## Direct REST alternative\nPOST https://defaultverifier.com/settlement-witness\nGET  https://defaultverifier.com/settlement-witness  (returns JSON help payload)\n\n## Run this now (copy/paste)\n\n### Linux/macOS\n```bash\ncurl -sS https://defaultverifier.com/settlement-witness \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}'\n```\n\n### Windows PowerShell (IMPORTANT)\nPowerShell aliases `curl` to `Invoke-WebRequest`, which often causes **422 Invalid JSON**.\nUse `curl.exe` and a file payload:\n\n```powershell\n@'\n{\"task_id\":\"example-001\",\"spec\":{\"expected\":\"foo\"},\"output\":{\"expected\":\"foo\"}}\n'@ | Out-File -Encoding ascii -NoNewline body.json\n\ncurl.exe -X POST https://defaultverifier.com/settlement-witness `\n  -H \"Content-Type: application/json\" `\n  --data-binary \"@body.json\"\n```\n\n## Important: install/download does NOT execute\nMany clients will only do discovery (e.g. `tools/list`).\nTo generate a receipt you must trigger a real tool run (MCP `tools/call` for `settlement_witness`) or send the REST POST above.\n\n\n## Required input\n- task_id (string)\n- spec (object)\n- output (object)\n\n## Example REST request\n{\n  \"task_id\": \"example-002\",\n  \"spec\": { \"expected\": \"foo\" },\n  \"output\": { \"expected\": \"foo\" }\n}\n\n## Interpretation\n- PASS → verified completion\n- FAIL → do not auto-settle\n- INDETERMINATE → retry or escalate\n- receipt_id → stable identifier\n- reason_code → canonical failure reason (ex: SPEC_MISMATCH)\n\n## Safety notes\n- Never send secrets in spec/output.\n- Keep spec/output deterministic."},{"path":"SKILL.md","content":"---\nname: settlement-witness\ndescription: \"Generate a signed delivery receipt in under 30 seconds.\"\n---\n\n# SettlementWitness\n\nGenerate a signed delivery receipt in under 30 seconds.\n\n## Run This Now\n\nsettlement_witness({\n  task_id: \"quickstart-001\",\n  spec: { value: 1 },\n  output: { value: 1 }\n})\n\nYou should receive:\n\nPASS  \nSPEC_MATCH  \nreceipt_id starting with sha256:  \nsig starting with base64url:  \n\nExample (truncated):\n\n{\n  \"receipt_v0_1\": {\n    \"verdict\": \"PASS\",\n    \"reason_code\": \"SPEC_MATCH\",\n    \"receipt_id\": \"sha256:3adb22d0...\",\n    \"sig\": \"base64url:AbC...\"\n  }\n}\n\nSettlementWitness produces cryptographically signed delivery receipts that third-party systems can verify offline.\n\n## Common Failure Modes\n\n**If you see 422**  \nMissing required field. Ensure `task_id`, `spec`, and `output` are present.\n\n**If you see INDETERMINATE / EVALUATOR_TIMEOUT**  \nUpstream evaluator unreachable. This is still a valid signed receipt.\n\n**If you see FAIL / SPEC_MISMATCH**  \nYour output does not match your spec. Compare structures.\n\n## Live Examples / Fixtures\n\nSee working PASS, FAIL, and INDETERMINATE examples here:  \nfixtures/\n\n## Endpoints\n\nMCP:  \nPOST https://defaultverifier.com/mcp\n\nDirect REST:  \nPOST https://defaultverifier.com/settlement-witness\n\n## Safety Notes\n\nNever send secrets in `spec` or `output`. Keep inputs deterministic."},{"path":"_meta.json","content":"{\n  \"ownerId\": \"kn71nqqcxyxyst7f2s3f2nzz0h80jf78\",\n  \"slug\": \"settlement-witness\",\n  \"version\": \"0.0.6\",\n  \"publishedAt\": 1771634656707\n}"}],"languages":[],"docsSourceLabel":"CLAWHUB","editorialOverview":"Generate a signed delivery receipt in under 30 seconds. Skill: SettlementWitness Owner: nutstrut Summary: Generate a signed delivery receipt in under 30 seconds. Tags: latest:0.0.6 Version history: v0.0.6 | 2026-02-21T00:44:16.707Z | user v0.0.6 Improved first-run onboarding experience. 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