{
  "identity": {
    "name": "mcp-server-sequential-thinking",
    "version": "0.6.2",
    "publisher": {
      "name": "Model Context Protocol a Series of LF Projects, LLC.",
      "verified": false
    },
    "source": "https://github.com/modelcontextprotocol/servers",
    "license": "SEE LICENSE IN LICENSE",
    "type": "mcp_server",
    "git_sha": "f4244583a6af9425633e433a3eec000d23f4e011"
  },
  "description": {
    "summary": "Provides a structured sequential thinking tool that breaks down complex problems into manageable steps with branching, revision, and confidence tracking capabilities.",
    "semantic": {
      "capabilities": [
        "sequential_thinking",
        "problem_solving",
        "step_by_step_analysis",
        "thought_revision",
        "branching_logic",
        "dynamic_planning",
        "context_maintenance"
      ],
      "constraints": {
        "input_format": "requires structured thought parameters including thought content, step numbers, and continuation flags",
        "logging": "thought logging can be disabled via DISABLE_THOUGHT_LOGGING environment variable"
      }
    },
    "categories": [
      "problem-solving",
      "analysis",
      "planning",
      "reasoning",
      "cognitive-tools"
    ],
    "solves": "I need to break down complex problems into structured, manageable thinking steps that can be revised and branched as my understanding evolves."
  },
  "dependencies": [
    {
      "type": "npm_package",
      "name": "@modelcontextprotocol/sdk",
      "version": "^1.26.0",
      "required": true
    },
    {
      "type": "npm_package",
      "name": "chalk",
      "version": "^5.3.0",
      "required": true
    },
    {
      "type": "npm_package",
      "name": "yargs",
      "version": "^17.7.2",
      "required": true
    }
  ],
  "supply_chain": {
    "sbom": {
      "format": "CycloneDX",
      "version": "1.5",
      "generated_at": "2026-03-29T00:43:37.463Z",
      "component_count": 277,
      "direct_dependencies": 1,
      "transitive_dependencies": 276,
      "vulnerability_summary": {
        "critical": 0,
        "high": 8,
        "medium": 0,
        "low": 9,
        "none": 0,
        "total": 17
      },
      "flagged_components": [
        {
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          "version": "<1.19.10",
          "vulnerability": "GHSA-wc8c-qw6v-h7f6",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "ajv",
          "version": "7.0.0-alpha.0 - 8.17.1",
          "vulnerability": "GHSA-2g4f-4pwh-qvx6",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "brace-expansion",
          "version": "<1.1.13 || >=2.0.0 <2.0.3",
          "vulnerability": "GHSA-f886-m6hf-6m8v",
          "severity": "low",
          "status": "patched",
          "notes": "scope: development; found by: npm-audit; fix: available"
        },
        {
          "name": "esbuild",
          "version": "<=0.24.2",
          "vulnerability": "GHSA-67mh-4wv8-2f99",
          "severity": "low",
          "status": "patched",
          "notes": "scope: development; found by: npm-audit; fix: 4.1.2"
        },
        {
          "name": "express-rate-limit",
          "version": "8.2.0 - 8.2.1",
          "vulnerability": "GHSA-46wh-pxpv-q5gq",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "hono",
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          "vulnerability": "GHSA-gq3j-xvxp-8hrf",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "hono",
          "version": "<=4.12.6",
          "vulnerability": "GHSA-5pq2-9x2x-5p6w",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "hono",
          "version": "<=4.12.6",
          "vulnerability": "GHSA-p6xx-57qc-3wxr",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "hono",
          "version": "<=4.12.6",
          "vulnerability": "GHSA-q5qw-h33p-qvwr",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "hono",
          "version": "<=4.12.6",
          "vulnerability": "GHSA-v8w9-8mx6-g223",
          "severity": "low",
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          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "minimatch",
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          "vulnerability": "GHSA-3ppc-4f35-3m26",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "minimatch",
          "version": "<=3.1.3 || 9.0.0 - 9.0.6 || 10.0.0 - 10.2.2",
          "vulnerability": "GHSA-7r86-cg39-jmmj",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "minimatch",
          "version": "<=3.1.3 || 9.0.0 - 9.0.6 || 10.0.0 - 10.2.2",
          "vulnerability": "GHSA-23c5-xmqv-rm74",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "path-to-regexp",
          "version": "8.0.0 - 8.3.0",
          "vulnerability": "GHSA-j3q9-mxjg-w52f",
          "severity": "high",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "path-to-regexp",
          "version": "8.0.0 - 8.3.0",
          "vulnerability": "GHSA-27v5-c462-wpq7",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "qs",
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          "vulnerability": "GHSA-w7fw-mjwx-w883",
          "severity": "low",
          "status": "patched",
          "notes": "scope: runtime; found by: npm-audit; fix: available"
        },
        {
          "name": "rollup",
          "version": "4.0.0 - 4.58.0",
          "vulnerability": "GHSA-mw96-cpmx-2vgc",
          "severity": "high",
          "status": "patched",
          "notes": "scope: development; found by: npm-audit; fix: available"
        }
      ]
    },
    "last_dependency_audit": "2026-03-29T00:43:37.463Z"
  },
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    "license_file": "LICENSE",
    "security_md_present": true,
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    "readme_empty": false,
    "namespace_match": true,
    "last_commit_date": "2026-03-17T14:21:11+00:00",
    "contributor_count": 1,
    "repo_age_days": 11,
    "template_description": false
  },
  "owasp_mcp_coverage": [
    {
      "id": "MCP01",
      "name": "Excessive Agency & Permissions",
      "covered_by": [
        {
          "stage": "security",
          "description": "Cisco scanner behavioral analysis of permission scope"
        }
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      "status": "covered"
    },
    {
      "id": "MCP02",
      "name": "Unauthorized Data Access",
      "covered_by": [
        {
          "stage": "adversarial",
          "description": "Category 3 (data exfiltration) attack patterns"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP03",
      "name": "Tool Poisoning",
      "covered_by": [
        {
          "stage": "adversarial",
          "description": "Category 1 (prompt injection) and Category 5 (context poisoning) attack patterns"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP04",
      "name": "Supply Chain Vulnerabilities",
      "covered_by": [
        {
          "stage": "sbom",
          "description": "SBOM generation (syft/cdxgen) and vulnerability scanning (grype/osv-scanner/npm audit)"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP05",
      "name": "Command Injection",
      "covered_by": [
        {
          "stage": "adversarial",
          "description": "Category 2 (privilege escalation) and Category 6 (repo config injection) attack patterns"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP06",
      "name": "Intent Subversion",
      "covered_by": [
        {
          "stage": "adversarial",
          "description": "Category 1 (prompt injection) and Category 4 (capability squatting) attack patterns"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP07",
      "name": "Insecure Data Handling",
      "covered_by": [
        {
          "stage": "security",
          "description": "Cisco scanner data flow and sensitive data handling analysis"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP08",
      "name": "Insufficient Logging",
      "covered_by": [],
      "status": "gap",
      "gap_note": "Not directly tested — logging adequacy requires runtime observation beyond current pipeline scope"
    },
    {
      "id": "MCP09",
      "name": "Resource Exhaustion",
      "covered_by": [
        {
          "stage": "fingerprint",
          "description": "Resource profiling (CPU, memory) during functional and adversarial testing"
        }
      ],
      "status": "covered"
    },
    {
      "id": "MCP10",
      "name": "Context Injection",
      "covered_by": [
        {
          "stage": "adversarial",
          "description": "Category 5 (context poisoning) attack patterns"
        }
      ],
      "status": "covered"
    }
  ],
  "composability": {
    "tested_with": [],
    "known_conflicts": [],
    "certified_workflows": []
  },
  "trust": {
    "score": 90,
    "grade": "A",
    "maturity": "Initial",
    "scheme_version": "2.0",
    "verified_at": "2026-03-29T00:44:41.222Z",
    "consumer_confirmations": {
      "total": 0,
      "confirmation_rate": 0,
      "last_30_days": {
        "consumptions": 0,
        "confirmations": 0,
        "disputes": 0,
        "dispute_categories": {}
      }
    },
    "provenance": {
      "hash": "sha256:1069f89fc288f5c7c17440ad542532f8d971c23b92e8d8c24f9a1bc09987ab0f",
      "signed_by": "fidensa.com",
      "signature": "see .cert.json artifact",
      "source_verified": true,
      "last_source_audit": "2026-03-29T00:44:41.222Z",
      "attestation_url": "https://fidensa.com/v1/attestation/"
    },
    "history": {
      "first_verified": "2026-03-29T00:44:41.222Z",
      "total_versions_verified": 1,
      "breaking_changes_detected": 0
    },
    "behavioral_fingerprint": {
      "fingerprint_version": "1.0",
      "baseline_created_at": "2026-03-29T00:44:36.159Z",
      "baseline_sample_size": 135,
      "signals": {
        "response_time_ms": {
          "p50": 1,
          "p95": 2,
          "p99": 3
        },
        "error_rate": 0,
        "output_size_bytes": {
          "p50": 623,
          "p95": 832,
          "mean": 550.25
        },
        "resource_profile": {
          "peak_memory_mb": 70.04,
          "avg_cpu_percent": 0.1
        },
        "per_tool": {
          "sequentialthinking": {
            "p50_ms": 1,
            "p95_ms": 2,
            "error_rate": 0,
            "sample_count": 135
          }
        }
      },
      "drift_status": "baseline"
    },
    "score_breakdown": [
      {
        "signal": "security_scan",
        "score": 1,
        "weight": 0.15,
        "contribution": 0.15,
        "source": "stage2b-security",
        "rationale": "No security findings"
      },
      {
        "signal": "supply_chain",
        "score": 0,
        "weight": 0.1,
        "contribution": 0,
        "source": "stage2a-sbom",
        "rationale": "17 vulnerabilities found, decay-scored to 0% (runtime-scope elevated)"
      },
      {
        "signal": "adversarial",
        "score": 1,
        "weight": 0.25,
        "contribution": 0.25,
        "source": "stage3b-adversarial",
        "rationale": "No adversarial findings — clean"
      },
      {
        "signal": "provenance",
        "score": 1,
        "weight": 0.2,
        "contribution": 0.2,
        "source": "stage1-ingest",
        "rationale": "source hash present, publisher identified, build succeeded, live MCP enumeration"
      },
      {
        "signal": "consumer_confirm",
        "score": 1,
        "weight": 0.1,
        "contribution": 0.1,
        "source": "stage3a-functional",
        "rationale": "Pipeline-derived baseline: 100.0% functional pass rate (no external reports yet)"
      },
      {
        "signal": "behavioral_pass",
        "score": 1,
        "weight": 0.1,
        "contribution": 0.1,
        "source": "stage3a-functional",
        "rationale": "100.0% of functional tests passed"
      },
      {
        "signal": "contract_accuracy",
        "score": 1,
        "weight": 0.06,
        "contribution": 0.06,
        "source": "stage3a-functional",
        "rationale": "Avg contract accuracy across 1 tools: 100.0%"
      },
      {
        "signal": "uptime",
        "score": 1,
        "weight": 0.04,
        "contribution": 0.04,
        "source": "pipeline-derived",
        "rationale": "Server responded throughout pipeline testing — baseline uptime 100% (no monitoring data yet)"
      }
    ],
    "max_achievable_score": 100,
    "review_flags": [
      {
        "category": "content",
        "severity": "medium",
        "source": "stage4-assembler",
        "description": "Description section was synthesized by LLM from stage data — verify accuracy",
        "blocks_certification": false,
        "kind": "note"
      },
      {
        "category": "content",
        "severity": "medium",
        "source": "stage4-assembler",
        "description": "Behavioral guarantees derived from README — verify accuracy against observed behavior",
        "blocks_certification": false,
        "kind": "note"
      },
      {
        "category": "publisher",
        "severity": "medium",
        "source": "stage1-ingest",
        "description": "Publisher \"Model Context Protocol a Series of LF Projects, LLC.\" is not verified — first certification from this publisher",
        "blocks_certification": false,
        "kind": "note"
      },
      {
        "category": "provenance",
        "severity": "low",
        "source": "stage1-provenance",
        "description": "Single contributor — no peer review evidence in commit history",
        "blocks_certification": false,
        "kind": "note"
      },
      {
        "category": "provenance",
        "severity": "low",
        "source": "stage1-provenance",
        "description": "Repository is 11 days old — recently created",
        "blocks_certification": false,
        "kind": "note"
      }
    ]
  },
  "mcp_server": {
    "interface": {
      "transport": [
        "stdio"
      ],
      "tools": [
        {
          "name": "sequentialthinking",
          "description": "A detailed tool for dynamic and reflective problem-solving through thoughts.\nThis tool helps analyze problems through a flexible thinking process that can adapt and evolve.\nEach thought can build on, question, or revise previous insights as understanding deepens.\n\nWhen to use this tool:\n- Breaking down complex problems into steps\n- Planning and design with room for revision\n- Analysis that might need course correction\n- Problems where the full scope might not be clear initially\n- Problems that require a multi-step solution\n- Tasks that need to maintain context over multiple steps\n- Situations where irrelevant information needs to be filtered out\n\nKey features:\n- You can adjust total_thoughts up or down as you progress\n- You can question or revise previous thoughts\n- You can add more thoughts even after reaching what seemed like the end\n- You can express uncertainty and explore alternative approaches\n- Not every thought needs to build linearly - you can branch or backtrack\n- Generates a solution hypothesis\n- Verifies the hypothesis based on the Chain of Thought steps\n- Repeats the process until satisfied\n- Provides a correct answer\n\nParameters explained:\n- thought: Your current thinking step, which can include:\n  * Regular analytical steps\n  * Revisions of previous thoughts\n  * Questions about previous decisions\n  * Realizations about needing more analysis\n  * Changes in approach\n  * Hypothesis generation\n  * Hypothesis verification\n- nextThoughtNeeded: True if you need more thinking, even if at what seemed like the end\n- thoughtNumber: Current number in sequence (can go beyond initial total if needed)\n- totalThoughts: Current estimate of thoughts needed (can be adjusted up/down)\n- isRevision: A boolean indicating if this thought revises previous thinking\n- revisesThought: If is_revision is true, which thought number is being reconsidered\n- branchFromThought: If branching, which thought number is the branching point\n- branchId: Identifier for the current branch (if any)\n- needsMoreThoughts: If reaching end but realizing more thoughts needed\n\nYou should:\n1. Start with an initial estimate of needed thoughts, but be ready to adjust\n2. Feel free to question or revise previous thoughts\n3. Don't hesitate to add more thoughts if needed, even at the \"end\"\n4. Express uncertainty when present\n5. Mark thoughts that revise previous thinking or branch into new paths\n6. Ignore information that is irrelevant to the current step\n7. Generate a solution hypothesis when appropriate\n8. Verify the hypothesis based on the Chain of Thought steps\n9. Repeat the process until satisfied with the solution\n10. Provide a single, ideally correct answer as the final output\n11. Only set nextThoughtNeeded to false when truly done and a satisfactory answer is reached",
          "input_schema": {
            "type": "object",
            "properties": {
              "thought": {
                "type": "string",
                "description": "Your current thinking step"
              },
              "nextThoughtNeeded": {
                "type": "boolean",
                "description": "Whether another thought step is needed"
              },
              "thoughtNumber": {
                "type": "integer",
                "minimum": 1,
                "description": "Current thought number (numeric value, e.g., 1, 2, 3)"
              },
              "totalThoughts": {
                "type": "integer",
                "minimum": 1,
                "description": "Estimated total thoughts needed (numeric value, e.g., 5, 10)"
              },
              "isRevision": {
                "$ref": "#/properties/nextThoughtNeeded",
                "description": "Whether this revises previous thinking"
              },
              "revisesThought": {
                "type": "integer",
                "minimum": 1,
                "description": "Which thought is being reconsidered"
              },
              "branchFromThought": {
                "type": "integer",
                "minimum": 1,
                "description": "Branching point thought number"
              },
              "branchId": {
                "type": "string",
                "description": "Branch identifier"
              },
              "needsMoreThoughts": {
                "$ref": "#/properties/isRevision",
                "description": "If more thoughts are needed"
              }
            },
            "required": [
              "thought",
              "nextThoughtNeeded",
              "thoughtNumber",
              "totalThoughts"
            ],
            "additionalProperties": false,
            "$schema": "http://json-schema.org/draft-07/schema#"
          }
        }
      ],
      "resources": [],
      "prompts": []
    },
    "behavioral_guarantees": {
      "contracts": [
        {
          "given": "Valid request",
          "then": "Provides a tool for dynamic and reflective problem-solving through a structured thinking process",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Breaks down complex problems into manageable steps",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Revises and refines thoughts as understanding deepens",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Branches into alternative paths of reasoning",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Adjusts the total number of thoughts dynamically",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Generates and verifies solution hypotheses",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Facilitates a detailed, step-by-step thinking process for problem-solving and analysis",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Maintains context over multiple steps",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Filters out irrelevant information",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Supports planning and design with room for revision",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Handles analysis that might need course correction",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Works with problems where the full scope might not be clear initially",
          "source": "author"
        },
        {
          "given": "Valid request",
          "then": "Provides tool \"sequentialthinking\": A detailed tool for dynamic and reflective problem-solving through thoughts.\nThis tool helps analyze problems through a flexible thinking process that can adapt and evolve.\nEach thought can build on, question, or revise previous insights as understanding deepens.\n\nWhen to use this tool:\n- Breaking down complex problems into steps\n- Planning and design with room for revision\n- Analysis that might need course correction\n- Problems where the full scope might not be clear initially\n- Problems that require a multi-step solution\n- Tasks that need to maintain context over multiple steps\n- Situations where irrelevant information needs to be filtered out\n\nKey features:\n- You can adjust total_thoughts up or down as you progress\n- You can question or revise previous thoughts\n- You can add more thoughts even after reaching what seemed like the end\n- You can express uncertainty and explore alternative approaches\n- Not every thought needs to build linearly - you can branch or backtrack\n- Generates a solution hypothesis\n- Verifies the hypothesis based on the Chain of Thought steps\n- Repeats the process until satisfied\n- Provides a correct answer\n\nParameters explained:\n- thought: Your current thinking step, which can include:\n  * Regular analytical steps\n  * Revisions of previous thoughts\n  * Questions about previous decisions\n  * Realizations about needing more analysis\n  * Changes in approach\n  * Hypothesis generation\n  * Hypothesis verification\n- nextThoughtNeeded: True if you need more thinking, even if at what seemed like the end\n- thoughtNumber: Current number in sequence (can go beyond initial total if needed)\n- totalThoughts: Current estimate of thoughts needed (can be adjusted up/down)\n- isRevision: A boolean indicating if this thought revises previous thinking\n- revisesThought: If is_revision is true, which thought number is being reconsidered\n- branchFromThought: If branching, which thought number is the branching point\n- branchId: Identifier for the current branch (if any)\n- needsMoreThoughts: If reaching end but realizing more thoughts needed\n\nYou should:\n1. Start with an initial estimate of needed thoughts, but be ready to adjust\n2. Feel free to question or revise previous thoughts\n3. Don't hesitate to add more thoughts if needed, even at the \"end\"\n4. Express uncertainty when present\n5. Mark thoughts that revise previous thinking or branch into new paths\n6. Ignore information that is irrelevant to the current step\n7. Generate a solution hypothesis when appropriate\n8. Verify the hypothesis based on the Chain of Thought steps\n9. Repeat the process until satisfied with the solution\n10. Provide a single, ideally correct answer as the final output\n11. Only set nextThoughtNeeded to false when truly done and a satisfactory answer is reached",
          "source": "author"
        }
      ],
      "failure_modes": [],
      "side_effects": [
        "Accesses environment variables"
      ],
      "guarantee_sources": [
        "author",
        "protocol"
      ],
      "scope_boundaries": {
        "modifies_files": false,
        "creates_files": false,
        "deletes_files": false,
        "makes_network_requests": false,
        "accesses_env_variables": true,
        "invokes_external_tools": false
      }
    },
    "security": {
      "permissions_required": [],
      "data_accessed": [],
      "network_calls": [],
      "sandboxable": true,
      "scan_results": {
        "cisco_mcp_scanner": {
          "status": "SAFE",
          "severity": "SAFE",
          "analyzers": [
            "yara",
            "llm",
            "readiness"
          ],
          "scanned_at": "2026-03-29T00:43:52.012Z",
          "findings_summary": {
            "critical": 0,
            "high": 0,
            "medium": 0,
            "low": 0,
            "informational": 0
          },
          "live_scan": {
            "status": "completed",
            "finding_count": 0,
            "findings": [],
            "duration_ms": 9212
          },
          "code_scan": {
            "status": "completed",
            "finding_count": 0,
            "findings": [],
            "duration_ms": 5327
          }
        }
      },
      "adversarial_testing": {
        "methodology_version": "1.0",
        "categories_tested": [
          "prompt_injection_chains",
          "capability_squatting",
          "context_poisoning"
        ],
        "findings": [],
        "tested_at": "2026-03-29T00:44:41.219Z"
      }
    }
  }
}