diff --git a/skills/rig/samples/68-changelog-generator.md b/skills/rig/samples/68-changelog-generator.md
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+# 68 - Changelog Generator
+
+```rig
+import { agent, p, s, defineTool } from "rig";
+import { repair } from "rig/addons";
+
+const validateSemver = defineTool("validateSemver", {
+  description: "Validate that a bump type is major, minor, or patch",
+  parameters: s.object({ bump: s.string }),
+  handler({ bump }) {
+    const valid = ["major", "minor", "patch"].includes(bump);
+    return { valid };
+  },
+});
+
+// Agent role: read recent git changes and produce a structured changelog entry with semver bump classification.
+const changelogGenerator = agent({
+  model: "small",
+  instructions: p`Review ${p.bash("git diff HEAD~1 HEAD --stat")} and ${p.bash("git log HEAD~1..HEAD --oneline")} to produce a changelog entry. Classify each change by category and determine the semver bump type. Use the validateSemver tool to confirm the bump value. Write the markdown changelog to CHANGELOG.md via ${p.write("CHANGELOG.md", "<!-- changelog -->")}`,
+  output: s.object({
+    version: s.string,
+    bump: s.enum("major", "minor", "patch"),
+    entries: s.array(s.object({
+      category: s.enum("feat", "fix", "chore", "docs", "refactor"),
+      description: s.string,
+    })),
+    markdown: s.string,
+  }),
+  tools: [validateSemver],
+  maxTurns: 6,
+  addons: repair(),
+});
+
+export default changelogGenerator;
+
+```
diff --git a/skills/rig/samples/69-todo-comment-tracker.md b/skills/rig/samples/69-todo-comment-tracker.md
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+# 69 - Todo Comment Tracker
+
+```rig
+import { agent, p, s } from "rig";
+
+// Agent role: scan source files for TODO/FIXME/HACK comments and produce a structured report.
+const todoCommentTracker = agent({
+  model: "small",
+  instructions: p`Scan source files using ${p.bash("grep -rn 'TODO\\|FIXME\\|HACK' --include='*.ts' . 2>/dev/null || true")} and produce a structured list of all found comments. Write a markdown report to todo-report.md via ${p.write("todo-report.md", "<!-- report -->")}`,
+  output: s.object({
+    items: s.array(s.object({
+      file: s.path,
+      line: s.int,
+      kind: s.enum("TODO", "FIXME", "HACK"),
+      message: s.string,
+    })),
+    totalCount: s.int,
+    markdown: s.string,
+  }),
+});
+
+export default todoCommentTracker;
+
+```
diff --git a/skills/rig/samples/70-multi-file-subagent-summarizer.md b/skills/rig/samples/70-multi-file-subagent-summarizer.md
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+# 70 - Multi File Subagent Summarizer
+
+```rig
+import { agent, p, s } from "rig";
+
+// Agent role: summarize a single TypeScript file.
+const fileSummarizer = agent({
+  name: "fileSummarizer",
+  model: "nano",
+  input: s.object({ filePath: s.path }),
+  instructions: p`Summarize the TypeScript file at ${p.readInput("filePath")} in one concise sentence.`,
+  output: s.object({ summary: s.string }),
+});
+
+// Agent role: find TypeScript source files and delegate to fileSummarizer to summarize each one, then aggregate results.
+const multiFileSummarizer = agent({
+  model: "small",
+  instructions: p`Find TypeScript files using ${p.bash("find src -name '*.ts' -not -path '*/node_modules/*' 2>/dev/null | head -10 || echo 'no files'")} then delegate each file path to the fileSummarizer subagent and collect summaries keyed by file path.`,
+  output: s.record(s.string),
+  agents: { fileSummarizer },
+});
+
+export default multiFileSummarizer;
+
+```
diff --git a/skills/rig/samples/71-package-script-health.md b/skills/rig/samples/71-package-script-health.md
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+# 71 - Package Script Health
+
+```rig
+import { agent, p, s, defineTool } from "rig";
+import { repair } from "rig/addons";
+
+const validateScriptName = defineTool("validateScriptName", {
+  description: "Validate that a package.json script name follows conventional naming (lowercase, hyphens only)",
+  parameters: s.object({ name: s.string }),
+  handler({ name }) {
+    const valid = /^[a-z][a-z0-9:-]*$/.test(name);
+    const reason = valid ? "Name is conventional" : "Name should be lowercase with hyphens/colons only";
+    return { valid, reason };
+  },
+});
+
+// Agent role: analyze package.json scripts for naming and structural health issues.
+const packageScriptHealth = agent({
+  model: "small",
+  instructions: p`Read ${p.read("package.json")} and analyze all scripts entries. Use the validateScriptName tool for each script name. Classify each issue by severity and determine overall health.`,
+  output: s.object({
+    issues: s.array(s.object({
+      script: s.string,
+      issue: s.string,
+      status: s.enum("error", "warning", "ok"),
+    })),
+    overallHealth: s.enum("healthy", "degraded", "critical"),
+  }),
+  tools: [validateScriptName],
+  maxTurns: 6,
+  addons: repair(),
+});
+
+export default packageScriptHealth;
+
+```
diff --git a/skills/rig/samples/72-ts-function-signatures.md b/skills/rig/samples/72-ts-function-signatures.md
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+# 72 - Ts Function Signatures
+
+```rig
+import { agent, p, s, defineTool } from "rig";
+
+const parseSignatures = defineTool("parseSignatures", {
+  description: "Extract function signatures from TypeScript source content using regex",
+  parameters: s.object({ content: s.string }),
+  handler({ content }) {
+    const pattern = /(?:export\s+)?(?:async\s+)?function\s+(\w+)\s*\(([^)]*)\)/g;
+    const functions: { name: string; paramCount: number; isExported: boolean }[] = [];
+    let match;
+    while ((match = pattern.exec(content)) !== null) {
+      const [full, name, params] = match;
+      const paramCount = params.trim() === "" ? 0 : params.split(",").length;
+      const isExported = full.trimStart().startsWith("export");
+      functions.push({ name, paramCount, isExported });
+    }
+    return { functions };
+  },
+});
+
+// Agent role: extract TypeScript function signatures from source files and return them keyed by file path.
+const tsFunctionSignatures = agent({
+  model: "small",
+  instructions: p`Find TypeScript files using ${p.bash("find src -name '*.ts' 2>/dev/null | head -5 || echo 'no files'")} then read each file and use the parseSignatures tool to extract function signatures. Return results keyed by file path.`,
+  output: s.record(s.array(s.object({
+    name: s.string,
+    paramCount: s.int,
+    isExported: s.boolean,
+  }))),
+  tools: [parseSignatures],
+});
+
+export default tsFunctionSignatures;
+
+```
diff --git a/skills/rig/samples/73-git-branch-pruner.md b/skills/rig/samples/73-git-branch-pruner.md
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index 0000000..e1015fe
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@@ -0,0 +1,27 @@
+# 73 - Git Branch Pruner
+
+```rig
+import { agent, p, s } from "rig";
+import { repair } from "rig/addons";
+
+// Agent role: identify git branches that are candidates for pruning based on merge status and last commit date.
+const gitBranchPruner = agent({
+  model: "small",
+  instructions: p`Analyze git branches using ${p.bash("git branch --merged HEAD 2>/dev/null || echo 'no branches'")} and ${p.bash("git for-each-ref --format='%(refname:short) %(committerdate:short)' refs/heads/ 2>/dev/null || echo 'no refs'")}. For each branch determine if it should be pruned (merged and not main/master/develop) or kept. Exclude the current branch from prune candidates.`,
+  output: s.object({
+    candidates: s.array(s.object({
+      branch: s.string,
+      lastCommitDate: s.optional(s.string),
+      action: s.enum("keep", "prune"),
+      reason: s.string,
+    })),
+    totalBranches: s.int,
+    pruneCount: s.int,
+  }),
+  maxTurns: 6,
+  addons: repair(),
+});
+
+export default gitBranchPruner;
+
+```
diff --git a/skills/rig/samples/74-prettier-eslint-compat.md b/skills/rig/samples/74-prettier-eslint-compat.md
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index 0000000..2ca647e
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@@ -0,0 +1,50 @@
+# 74 - Prettier Eslint Compat
+
+```rig
+import { agent, p, s, defineTool } from "rig";
+import { repair } from "rig/addons";
+
+const detectConflicts = defineTool("detectConflicts", {
+  description: "Detect rule conflicts between Prettier and ESLint configs",
+  parameters: s.object({ prettierConfig: s.string, eslintConfig: s.string }),
+  handler({ prettierConfig, eslintConfig }) {
+    const conflicts: { rule: string; prettier: string; eslint: string; fixable: boolean }[] = [];
+    try {
+      const p = JSON.parse(prettierConfig || "{}");
+      const e = JSON.parse(eslintConfig || "{}");
+      const rules = (e.rules || {});
+      if (p.printWidth && rules["max-len"]) {
+        conflicts.push({ rule: "line-length", prettier: `printWidth: ${p.printWidth}`, eslint: `max-len: ${JSON.stringify(rules["max-len"])}`, fixable: true });
+      }
+      if (p.singleQuote !== undefined && rules["quotes"]) {
+        conflicts.push({ rule: "quotes", prettier: `singleQuote: ${p.singleQuote}`, eslint: `quotes: ${JSON.stringify(rules["quotes"])}`, fixable: true });
+      }
+    } catch {
+      // invalid JSON — model will handle
+    }
+    return { conflicts };
+  },
+});
+
+// Agent role: check Prettier and ESLint configs for rule conflicts and report compatibility issues.
+const prettierEslintCompat = agent({
+  model: "small",
+  instructions: p`Read the Prettier config ${p.readOptional(".prettierrc")} and ESLint config ${p.readOptional(".eslintrc.json")} then use the detectConflicts tool to find rule conflicts. Classify each conflict by severity.`,
+  output: s.object({
+    conflicts: s.array(s.object({
+      rule: s.string,
+      prettier: s.string,
+      eslint: s.string,
+      fixable: s.boolean,
+      severity: s.enum("error", "warning", "info"),
+    })),
+    compatible: s.boolean,
+  }),
+  tools: [detectConflicts],
+  maxTurns: 6,
+  addons: repair(),
+});
+
+export default prettierEslintCompat;
+
+```
diff --git a/skills/rig/samples/75-workflow-validator.md b/skills/rig/samples/75-workflow-validator.md
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index 0000000..4b7df2b
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+# 75 - Workflow Validator
+
+```rig
+import { agent, p, s } from "rig";
+
+// Agent role: analyze a single GitHub Actions workflow file for structural issues and job count.
+const workflowAnalyzer = agent({
+  name: "workflowAnalyzer",
+  model: "nano",
+  input: s.object({ filePath: s.path }),
+  instructions: p`Analyze the GitHub Actions workflow file at ${p.readInput("filePath")} for issues such as missing permissions, deprecated actions, hardcoded secrets, or missing timeout-minutes. Count the number of jobs defined.`,
+  output: s.object({
+    issues: s.array(s.object({
+      step: s.string,
+      problem: s.string,
+      severity: s.enum("error", "warning", "info"),
+    })),
+    jobCount: s.int,
+  }),
+});
+
+// Agent role: find all GitHub Actions workflow files and delegate analysis to workflowAnalyzer subagent, then aggregate results.
+const workflowValidator = agent({
+  model: "small",
+  instructions: p`Find GitHub Actions workflow files using ${p.bash("find .github/workflows -name '*.yml' -o -name '*.yaml' 2>/dev/null | head -10 || echo 'no workflows'")} then delegate each file to the workflowAnalyzer subagent. Aggregate results keyed by filename, adding a pass/warn/fail status based on issue severity.`,
+  output: s.record(s.object({
+    issues: s.array(s.object({
+      step: s.string,
+      problem: s.string,
+      severity: s.enum("error", "warning", "info"),
+    })),
+    jobCount: s.int,
+    status: s.enum("pass", "warn", "fail"),
+  })),
+  agents: { workflowAnalyzer },
+});
+
+export default workflowValidator;
+
+```
diff --git a/skills/rig/samples/76-commit-msg-rewriter.md b/skills/rig/samples/76-commit-msg-rewriter.md
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index 0000000..39c9b28
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+++ b/skills/rig/samples/76-commit-msg-rewriter.md
@@ -0,0 +1,26 @@
+# 76 - Commit Msg Rewriter
+
+```rig
+import { agent, p, s } from "rig";
+import { steering, repair } from "rig/addons";
+
+// Agent role: rewrite recent git commit messages into conventional commit format with imperative mood.
+const commitMsgRewriter = agent({
+  model: "small",
+  instructions: p`Review recent commits from ${p.bash("git log --oneline -20 2>/dev/null || echo 'no commits'")} and rewrite each message in conventional commit format (feat:/fix:/chore:/docs:/test:/refactor:/style: prefix) with imperative mood. Write a markdown summary of all rewrites via ${p.writeOutput("markdown", "commit-rewrites.md")}`,
+  output: s.object({
+    rewrites: s.array(s.object({
+      hash: s.string,
+      original: s.string,
+      revised: s.string,
+      category: s.enum("feat", "fix", "chore", "docs", "test", "refactor", "style"),
+    })),
+    markdown: s.string,
+  }),
+  maxTurns: 6,
+  addons: [steering({ message: "Use imperative mood and conventional commit prefixes. Be consistent." }), repair()],
+});
+
+export default commitMsgRewriter;
+
+```
diff --git a/skills/rig/samples/77-env-key-checker.md b/skills/rig/samples/77-env-key-checker.md
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index 0000000..ffaff3d
--- /dev/null
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@@ -0,0 +1,32 @@
+# 77 - Env Key Checker
+
+```rig
+import { agent, p, s, defineTool } from "rig";
+
+const parseEnvKeys = defineTool("parseEnvKeys", {
+  description: "Extract KEY names from dotenv-style file content",
+  parameters: s.object({ content: s.string }),
+  handler({ content }) {
+    const keys = (content.match(/^([A-Z_][A-Z0-9_]*)=/gm) || [])
+      .map(line => line.replace("=", ""));
+    return { keys };
+  },
+});
+
+// Agent role: compare .env.example required keys against .env actual keys to find missing and extra entries.
+const envKeyChecker = agent({
+  model: "small",
+  instructions: p`Read the required env keys from ${p.readOptional(".env.example")} and the present keys from ${p.readOptional(".env")}. Use the parseEnvKeys tool on each file content to extract key names. Compare to find missing keys (in example but not env) and extra keys (in env but not example).`,
+  output: s.object({
+    missing: s.array(s.string),
+    extra: s.array(s.string),
+    requiredCount: s.int,
+    presentCount: s.int,
+    status: s.enum("complete", "partial", "empty"),
+  }),
+  tools: [parseEnvKeys],
+});
+
+export default envKeyChecker;
+
+```