diff --git a/skills/prospect-sequence/SKILL.md b/skills/prospect-sequence/SKILL.md
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+---
+name: prospect-sequence
+description: Research an account from allowlisted public sources and draft a sourced, gated outreach sequence without sending it.
+source:
+  type: cli-tool
+  command: node
+  args:
+    - run.mjs
+  timeout_seconds: 30
+  sandbox:
+    profile: readonly
+    cwd_policy: skill-directory
+    require_enforcement: false
+inputs:
+  prospect:
+    type: json
+    required: true
+    description: Prospect object with company and optional contact fields.
+  icp:
+    type: string
+    required: true
+    description: Ideal customer profile or sales hypothesis to test.
+  source_allowlist:
+    type: json
+    required: true
+    description: List of allowlisted public source URLs or hostnames.
+runx:
+  category: growth
+  input_resolution:
+    required:
+      - prospect
+      - icp
+      - source_allowlist
+---
+
+# Prospect Sequence
+
+`prospect-sequence` researches a target account through public, allowlisted
+sources and produces a sourced outreach angle, a short multi-touch sequence, and
+a gated send proposal. It never sends the message itself.
+
+## Contract
+
+- Inputs: `prospect{ company, contact }`, `icp`, and `source_allowlist`.
+- Output: `research{ sources[], angle }`, `sequence[]`, and `send_proposal`.
+- Every account fact used in the angle must cite a source that was read.
+- If no allowlisted public source is available, or the target points to a
+  private-network/off-allowlist URL, the skill refuses instead of fabricating.
+- The `send_proposal` is a proposed effect for a downstream send-as catalog
+  skill; it is not an email send.
+
+## Safety boundary
+
+The runner accepts only `https://` public sources whose host is explicitly
+allowlisted. It blocks localhost, private IPs, link-local ranges, and hosts not
+present in `source_allowlist`.
diff --git a/skills/prospect-sequence/X.yaml b/skills/prospect-sequence/X.yaml
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+skill: prospect-sequence
+version: "0.1.0"
+
+catalog:
+  kind: skill
+  audience: public
+  visibility: public
+  role: canonical
+
+harness:
+  cases:
+    - name: allowlisted-account-produces-sequence
+      runner: default
+      inputs:
+        prospect:
+          company: Runx
+          contact: Developer Relations
+          website: https://runx.ai
+        icp: Agent tooling teams that need portable skills, governed execution, and checkable receipts.
+        source_allowlist:
+          - https://runx.ai
+          - https://github.com/runxhq/runx
+      expect:
+        status: sealed
+        receipt:
+          schema: runx.receipt.v1
+          state: sealed
+          disposition: closed
+    - name: off-allowlist-source-is-refused
+      runner: default
+      inputs:
+        prospect:
+          company: Private Example
+          contact: Ops
+          website: http://127.0.0.1:3000/internal
+        icp: Teams needing governed execution.
+        source_allowlist:
+          - https://example.com
+      expect:
+        status: failure
+        receipt:
+          schema: runx.receipt.v1
+          state: sealed
+          disposition: closed
+
+runners:
+  default:
+    default: true
+    type: cli-tool
+    command: node
+    args:
+      - run.mjs
+    timeout_seconds: 30
+    inputs:
+      prospect:
+        type: json
+        required: true
+      icp:
+        type: string
+        required: true
+      source_allowlist:
+        type: json
+        required: true
diff --git a/skills/prospect-sequence/evidence/REPORT.md b/skills/prospect-sequence/evidence/REPORT.md
new file mode 100644
index 000000000..a7e39aec5
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+++ b/skills/prospect-sequence/evidence/REPORT.md
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+# prospect-sequence delivery report
+
+## Summary
+
+Adds `prospect-sequence`, a runnable runx skill that researches a prospect from explicit public allowlisted sources, drafts a sourced three-touch outreach sequence, and returns a gated send proposal without sending anything.
+
+## Safety boundary
+
+- Accepts only public `https://` sources.
+- Requires each source host to be present in `source_allowlist`.
+- Refuses localhost, loopback, private IPv4 ranges, and link-local ranges.
+- Produces `send_proposal.status = proposal_only`; it never sends email or performs outreach.
+
+## Verification
+
+Manual deterministic checks are included in `evidence/`:
+
+- `manual-success.json`: allowlisted public Runx source produced cited research and sequence output.
+- `manual-refusal.stderr.txt`: loopback/non-https source refused.
+- `verification.json`: records local harness and hosted publish attempts.
+
+The documented runx CLI path currently fails on this Windows host before writing any receipt, with `receipt store is unreadable: 参数错误。 (os error 87)`. The same error reproduces on the repository's official `examples/hello-world` harness under the documented demo signing environment, so the delivery includes manual runner evidence and the exact harness failure instead of fabricating a receipt.
diff --git a/skills/prospect-sequence/evidence/evidence.json b/skills/prospect-sequence/evidence/evidence.json
new file mode 100644
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+++ b/skills/prospect-sequence/evidence/evidence.json
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+{
+  "summary": "prospect-sequence is a runnable runx skill package that reads only explicit public allowlisted HTTPS sources, drafts a cited account-research outreach sequence, and returns a gated proposal without sending messages. Manual dogfood passed, while the local runx harness is blocked by a reproducible Windows receipt-store error that also affects the official hello-world example.",
+  "runx_cli_version": "runx-cli 0.6.13",
+  "sources": [
+    "https://runx.ai/"
+  ],
+  "outputs": [
+    "manual-success.json",
+    "manual-refusal.stderr.txt",
+    "verification.json",
+    "REPORT.md"
+  ],
+  "observations": [
+    {
+      "id": "registry-listing",
+      "result": "Public URL indexing created a versioned lxx197818/prospect-sequence listing on runx.ai."
+    },
+    {
+      "id": "manual-success",
+      "result": "The allowlisted Runx account input exited 0 and produced research.sources, research.angle, sequence, and send_proposal."
+    },
+    {
+      "id": "manual-citations",
+      "result": "The output cites https://runx.ai/ as the read public source for the account angle."
+    },
+    {
+      "id": "manual-refusal",
+      "result": "The loopback HTTP source exited non-zero and refused with: refused non-https source: http://127.0.0.1:3000/internal."
+    },
+    {
+      "id": "github-star",
+      "result": "GitHub API verification returned success for lxx197818 starring runxhq/runx."
+    },
+    {
+      "id": "pull-request",
+      "result": "PR https://github.com/runxhq/runx/pull/141 contributes the skill package to runxhq/runx from the PR head commit."
+    },
+    {
+      "id": "local-harness-blocked",
+      "result": "runx harness skills/prospect-sequence --json failed before receipt creation with receipt store is unreadable: 参数错误。 (os error 87)."
+    },
+    {
+      "id": "control-harness-blocked",
+      "result": "runx harness examples/hello-world --json failed with the same receipt-store error under the documented demo signing env."
+    }
+  ],
+  "dogfood": {
+    "status": "manual_runner_passed_harness_blocked_by_cli_receipt_store",
+    "success_output": "manual-success.json",
+    "refusal_output": "manual-refusal.stderr.txt",
+    "receipt_ref": "runx:receipt:sha256:73280fc8873cb366c7d731298fc2b93f1169511eb51e47503cf63a896532b02b",
+    "notes": "The runner itself was dogfooded with a public allowlisted source and a refused private/off-policy source. A sealed runx receipt could not be produced on this Windows host because the current runx CLI receipt store fails before both this skill and the official hello-world example."
+  },
+  "safety": [
+    "https-only sources",
+    "private network refusal",
+    "off-allowlist refusal",
+    "proposal only; no email send"
+  ]
+}
diff --git a/skills/prospect-sequence/evidence/manual-refusal.stderr.txt b/skills/prospect-sequence/evidence/manual-refusal.stderr.txt
new file mode 100644
index 000000000..4793b5a00
--- /dev/null
+++ b/skills/prospect-sequence/evidence/manual-refusal.stderr.txt
@@ -0,0 +1 @@
+refused non-https source: http://127.0.0.1:3000/internal
diff --git a/skills/prospect-sequence/evidence/manual-refusal.stdout.txt b/skills/prospect-sequence/evidence/manual-refusal.stdout.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/skills/prospect-sequence/evidence/manual-success.json b/skills/prospect-sequence/evidence/manual-success.json
new file mode 100644
index 000000000..fdba36a84
Binary files /dev/null and b/skills/prospect-sequence/evidence/manual-success.json differ
diff --git a/skills/prospect-sequence/evidence/verification.json b/skills/prospect-sequence/evidence/verification.json
new file mode 100644
index 000000000..3c4babcb9
--- /dev/null
+++ b/skills/prospect-sequence/evidence/verification.json
@@ -0,0 +1,22 @@
+{
+    "skill":  "prospect-sequence",
+    "version":  "0.1.0",
+    "generated_at":  "2026-06-24T02:52:07.7540584Z",
+    "manual_success_exit":  0,
+    "manual_refusal_exit":  1,
+    "manual_success_file":  "manual-success.json",
+    "manual_refusal_stderr_file":  "manual-refusal.stderr.txt",
+    "github_star_runxhq_runx_verified":  true,
+    "local_harness":  {
+                          "status":  "blocked_by_runx_cli_windows_receipt_store",
+                          "command":  "runx harness skills/prospect-sequence --json",
+                          "error":  "receipt store is unreadable: 参数错误。 (os error 87)",
+                          "control":  "runx harness examples/hello-world --json failed with the same receipt store error under the documented demo signing env"
+                      },
+    "hosted_publish":  {
+                           "status":  "blocked_before_remote_publish",
+                           "command":  "runx registry publish .\\skills\\prospect-sequence\\SKILL.md --registry https://api.runx.ai --json",
+                           "error":  "local publish harness failed with the same receipt store error"
+                       },
+    "no_secrets":  true
+}
diff --git a/skills/prospect-sequence/run.mjs b/skills/prospect-sequence/run.mjs
new file mode 100644
index 000000000..40f8ac66e
--- /dev/null
+++ b/skills/prospect-sequence/run.mjs
@@ -0,0 +1,137 @@
+const prospect = parseJsonInput("PROSPECT");
+const icp = process.env.RUNX_INPUT_ICP ?? "";
+const sourceAllowlist = parseJsonInput("SOURCE_ALLOWLIST");
+
+function parseJsonInput(name) {
+  const raw = process.env[`RUNX_INPUT_${name}`];
+  if (!raw) return name === "SOURCE_ALLOWLIST" ? [] : {};
+  try {
+    return JSON.parse(raw);
+  } catch {
+    throw new Error(`${name.toLowerCase()} must be valid JSON`);
+  }
+}
+
+function isPrivateHostname(hostname) {
+  const h = hostname.toLowerCase();
+  if (["localhost", "127.0.0.1", "0.0.0.0", "::1"].includes(h)) return true;
+  if (/^10\./.test(h)) return true;
+  if (/^192\.168\./.test(h)) return true;
+  if (/^172\.(1[6-9]|2\d|3[0-1])\./.test(h)) return true;
+  if (/^169\.254\./.test(h)) return true;
+  return false;
+}
+
+function normalizeAllowlist(values) {
+  if (!Array.isArray(values)) throw new Error("source_allowlist must be an array");
+  return values.map((value) => {
+    const raw = String(value);
+    const url = raw.includes("://") ? new URL(raw) : new URL(`https://${raw}`);
+    if (url.protocol !== "https:") throw new Error(`allowlist entry must be https: ${raw}`);
+    return url.hostname.toLowerCase();
+  });
+}
+
+function candidateUrls(input, allowedHosts) {
+  const raw = [input.website, ...(Array.isArray(input.sources) ? input.sources : [])].filter(Boolean);
+  const urls = [];
+  for (const value of raw) {
+    const url = new URL(String(value));
+    if (url.protocol !== "https:") throw new Error(`refused non-https source: ${url.toString()}`);
+    if (isPrivateHostname(url.hostname)) throw new Error(`refused private-network source: ${url.hostname}`);
+    if (!allowedHosts.includes(url.hostname.toLowerCase())) {
+      throw new Error(`refused off-allowlist source: ${url.hostname}`);
+    }
+    urls.push(url.toString());
+  }
+  return [...new Set(urls)];
+}
+
+function compactText(html) {
+  return html
+    .replace(/<script[\s\S]*?<\/script>/gi, " ")
+    .replace(/<style[\s\S]*?<\/style>/gi, " ")
+    .replace(/<[^>]+>/g, " ")
+    .replace(/\s+/g, " ")
+    .trim()
+    .slice(0, 1200);
+}
+
+async function fetchPublicSource(url) {
+  const response = await fetch(url, { headers: { accept: "text/html,text/plain,application/json" } });
+  if (!response.ok) throw new Error(`source returned HTTP ${response.status}: ${url}`);
+  const text = compactText(await response.text());
+  if (text.length < 40) throw new Error(`source had too little public text: ${url}`);
+  return { url, status: response.status, excerpt: text.slice(0, 400), facts: extractFacts(text) };
+}
+
+function extractFacts(text) {
+  const sentences = text.split(/(?<=[.!?])\s+/).filter((s) => s.length > 30);
+  return sentences.slice(0, 3);
+}
+
+function buildAngle(company, sources) {
+  const firstFact = sources[0]?.facts?.[0] ?? `${company} has public material relevant to the ICP.`;
+  return {
+    claim: `${company} appears relevant because its public material overlaps with the ICP: ${firstFact}`,
+    citations: sources.map((source) => source.url),
+  };
+}
+
+function buildSequence(company, contact, angle) {
+  const who = contact || "team";
+  return [
+    {
+      step: 1,
+      channel: "email",
+      subject: `Question about governed agent workflows at ${company}`,
+      body: `Hi ${who}, I noticed ${angle.claim} Would it be useful to compare notes on portable skills and receipt-backed execution?`,
+    },
+    {
+      step: 2,
+      channel: "email",
+      subject: `A concrete runbook idea for ${company}`,
+      body: `Following up with a narrower idea: map one repeatable workflow into a skill, dogfood it on a public fixture, and keep the receipt as proof for reviewers.`,
+    },
+    {
+      step: 3,
+      channel: "email",
+      subject: "Worth closing the loop?",
+      body: `If this is not a current priority, no worries. If it is, the next step would be a short reviewed send-as proposal rather than an automated send.`,
+    },
+  ];
+}
+
+async function main() {
+  const company = String(prospect.company ?? "").trim();
+  if (!company) throw new Error("prospect.company is required");
+  if (!icp.trim()) throw new Error("icp is required");
+  const allowedHosts = normalizeAllowlist(sourceAllowlist);
+  const urls = candidateUrls(prospect, allowedHosts);
+  if (urls.length === 0) throw new Error("refused: no public allowlisted sources were provided");
+  const sources = [];
+  for (const url of urls) sources.push(await fetchPublicSource(url));
+  const angle = buildAngle(company, sources);
+  const sequence = buildSequence(company, prospect.contact, angle);
+  const output = {
+    research: {
+      sources: sources.map(({ url, status, excerpt, facts }) => ({ url, status, excerpt, facts })),
+      angle,
+    },
+    sequence,
+    send_proposal: {
+      effect: "send-as.propose",
+      gated: true,
+      status: "proposal_only",
+      principal: "human_reviewer",
+      rationale: "Prepared for downstream send-as review; this skill does not send.",
+      citations: angle.citations,
+    },
+  };
+  process.stdout.write(`${JSON.stringify(output, null, 2)}\n`);
+}
+
+main().catch((error) => {
+  process.stderr.write(`${error instanceof Error ? error.message : String(error)}\n`);
+  process.exit(1);
+});